Industrial Dishwasher; The Necessity of Hygiene and Speed in Professional Kitchens

An industrial dishwasher is an advanced device that, with its special design and high capacity, provides the possibility of washing, disinfecting, and drying a large number of dishes in a very short time. Unlike domestic models designed solely for families, these machines have a much higher capacity and are built for high-consumption environments. Key features of these machines include high speed, water and energy savings, compliance with sanitary standards, high durability and longevity, the ability to wash all types of large and small dishes, and reduced need for manpower.

Furthermore, the variety of models and technologies used in industrial dishwashers allows for the selection of a device tailored to the needs of each business. For example, some models are under-counter (suitable for small cafes and restaurants), some are hood type or conveyor (for large centers with very high washing volumes), and others are produced with the capability to wash large trays and pots, which we will discuss later. This diversity has enabled managers and business owners to choose the best option based on their consumption rate, kitchen space, and budget.

Finally, it can be said that the industrial dishwasher is recognized not only as a simple washing device but also as an investment for improving service quality and increasing productivity in the food and hospitality industry. The use of industrial dishwashers directly and positively impacts customer satisfaction, improved service speed, adherence to public health standards, and even reducing costs for establishments. Therefore, detailed familiarity with the types of industrial dishwashers, their features, advantages, and important points in purchase and maintenance is essential for any business active in this field.

Main Components of an Industrial Dishwasher:

The industrial dishwasher consists of various parts, each playing an important role in the washing process. Below are some examples:

• Washing Tank: The main compartment for washing dishes.

• Spray Arms: Used to spray water and detergent at high pressure.

• Heating Element: Heats the water and generates steam for disinfection.

• Filtration System: Prevents food particles from entering the pump and water path.

• Wash Pump: Provides the necessary pressure for water circulation in the machine.

• Drying System: In some models, hot air is used to dry the dishes.

Types of Industrial Dishwashers:

Since each food service or catering establishment has its own specific needs and conditions, industrial dishwashers are also designed and produced in various models and capacities. Differences in kitchen dimensions, washing volume, type of tableware, and even the establishment's budget have made choosing the right machine crucial for improving performance and productivity. Therefore, familiarity with the types of industrial dishwashers and understanding the features and applications of each model is the first step towards a smart purchase suited to one's needs. Next, we will review the most common types of industrial dishwashers and the advantages and applications of each.

Conveyor Dishwasher:

• Capable of washing 200 racks per hour and 3600 items per hour.

• Components made of 304 stainless steel.

• Highest hygiene standard.

• Capability to add hot air blast.

• Dimensions: 145.4 * 82.4 * 155 cm.

• Power consumption: 50 kW, three-phase.

• Wash temperature: 55 to 65 °C.

• Rinse temperature: 80 to 90 °C.

Hood Type Dishwasher:

• Capable of washing 80 racks per hour.

• Easy washing operation.

• Boiler made of 304 stainless steel.

• Dimensions: 154.7 * 75.5 * 75.2 cm.

• Water consumption: 2 liters per wash cycle.

• Wash temperature: 55 to 65 °C.

• Rinse temperature: 80 to 90 °C.

Under Counter/Box Type Dishwasher:

• Capable of washing approximately 30 to 40 racks per hour.

• Reduced water and energy consumption.

• High-temperature washing for dish disinfection.

• Easy and suitable operation.

Single Rack or Tabletop Dishwasher:

• Suitable for kitchens with limited space.

• Capable of washing 10 to 20 racks per hour.

• Simple operation and suitable for staff.

What are the Advantages of Using an Industrial Dishwasher?

Using an industrial dishwasher has numerous advantages, making it one of the most important pieces of equipment in any industrial kitchen:

1. High Speed and Efficiency: Industrial machines can wash and dry large volumes of dishes in the shortest possible time, whereas manual washing is very time-consuming.

2. Water and Energy Savings: Water and energy consumption in industrial dishwashers is much more optimized than manual washing and can significantly reduce operational costs.

3. High Quality and Hygiene: Washing dishes at appropriate temperatures with standard detergents guarantees disinfection and reduces disease transmission.

4. Reduced Labor: Using industrial dishwashers reduces the need for many staff for washing, allowing them to be assigned to more important tasks.

5. Durability and Longevity of Tableware: Prevents damage to dishes and increases their lifespan.

6. Increased Customer Satisfaction: Providing clean and hygienic tableware enhances the customer experience and directly impacts business progress and success.

Challenges and Drawbacks of Industrial Dishwashers:

Although industrial dishwashers have significant advantages and are known as important tools for any professional kitchen, their use is not without challenges and limitations. A precise understanding of the weaknesses and challenges of industrial dishwashers helps businesses make more accurate choices with full preparedness and prevent operational problems. Reviewing these drawbacks allows managers and kitchen staff to plan appropriately for maintenance, operation, and optimization of dishwasher use.

Some negative points and important challenges in using industrial dishwashers include:

1. High Initial Cost: Industrial dishwashers require significant capital compared to manual washing or domestic dishwashers.

2. Need for Regular Maintenance: To maintain optimal performance, industrial dishwashers require service, cleaning, and periodic care; otherwise, their efficiency decreases.

3. High Energy and Water Consumption in Some Models: Although industrial dishwashers are efficient, large, high-capacity models have significant consumption.

4. Limited Capacity in Some Models: Small models like single-rack or under-counter industrial dishwashers have limited capacity and are not suitable for high volumes of dishes.

5. Space Requirement: Some models like hood type and conveyor require a lot of space and are not suitable for small kitchens.

6. Need for Staff Training: Correct and proper use of the industrial dishwasher by staff requires familiarity with instructions and standards; human error can reduce quality.

Stages of Industrial Dishwasher Operation:

An industrial dishwasher is an advanced device that uses mechanized technology and engineering design to perform the dishwashing process quickly and hygienically. This process involves several precise and coordinated stages, each playing an important role in the complete cleanliness and disinfection of dishes. Understanding these stages is especially important for users and managers of industrial kitchens to use the device optimally and increase its lifespan.

Loading Dishes:

The first stage in any wash cycle is placing the dishes in special racks or baskets. Dishes should be arranged orderly and with sufficient spacing so that water and detergent flow reaches all their surfaces. Depending on the machine type, racks may be placed on a conveyor (in conveyor models) or manually loaded into under-counter or tabletop machines.

Pre-Wash / Rinse:

In this stage, dishes are washed with lukewarm or low-temperature water to remove food residues and large particles. This stage prevents the clogging of filters and nozzles in subsequent stages and increases the quality of the main wash. Some machines use light detergents to help loosen tough particles.

Main Wash:

The main and important stage of the washing process begins. In this stage:

• Water at high temperature (usually 55 to 75 °C) and appropriate pressure is sprayed onto the dishes.

• Industrial detergents designed specifically for industrial dishwashers are mixed with water and help clean stains and grease.

• Water and detergent reach all surfaces of the dish through special nozzles, ensuring uniform washing.

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Rinse / Final Rinse:

After the main wash, dishes are rinsed with clean water at high temperature to completely remove any remaining detergent and grease.
In many models, this stage is done with hot water or water near boiling point to aid complete disinfection.
Some machines use disinfectants or rinse aids in this stage to leave dishes shiny and spot-free.

Drying:

The final stage is drying the dishes, which in some machines is done with a flow of hot air, and in others with residual heat from the water.
Proper drying of dishes:

• Prevents water spots on dishes.

• Increases the speed at which dishes are ready for use or service.

• Preserves the quality and final appearance of dishes.

Water Drainage and Preparation for Next Cycle:

After the cycle ends, the used water is drained, and the machine is prepared for the next wash cycle. Filters and nozzles may need quick cleaning to maintain the machine's efficiency in each cycle.

Performance Summary:

In summary, the performance of an industrial dishwasher, with a combination of water pressure, appropriate temperature, and standard detergents, ensures that dishes are completely clean, disinfected, and ready for reuse in the shortest possible time. Correctly following each stage not only guarantees wash quality but also increases the machine's lifespan and customer satisfaction.

Important Tips for Increasing the Lifespan and Quality of Industrial Dishwasher Performance:

The industrial dishwasher, as one of the most important pieces of equipment in professional kitchens, is considered a valuable asset that directly affects the efficiency and productivity of the establishment. Since these devices are usually acquired at high cost, attention to correct usage and maintenance methods is essential for increasing their useful life and maintaining performance quality. Adhering to a set of key tips can not only prevent premature machine failure but also guarantee the highest level of dishwashing quality.

Using Standard Detergents and Rinse Aids:

• Always use detergents and rinse aids specifically for industrial dishwashers.

• Using non-standard or household materials can damage nozzles, pumps, and the internal system of the machine.

• Choosing appropriate washing materials prevents staining and scaling on dishes.

Global Market of Industrial Dishwashers:

The global industrial dishwasher market has seen significant growth in recent years and has become one of the important sectors of the commercial kitchen equipment industry. Increasing urban population, growth in the hotel and restaurant industry, expansion of the culture of using ready-made and semi-ready meals, and growing attention to public hygiene have led to rising demand for industrial dishwashers worldwide.

Factors Driving Global Market Growth in the Industrial Dishwasher Industry:

1. Growth of the Hotel and Restaurant Industry: With increasing numbers of restaurants, cafes, and hotels globally, the need for professional dishwashing equipment is felt more than ever.

2. Focus on Hygiene and Food Safety: Stringent standards of international organizations in food safety have made the use of industrial dishwashers a requirement.

3. Technological Advancement: Manufacturers, utilizing new technologies such as energy and water-saving systems, smart devices, and low-noise, low-consumption designs, have been able to increase the appeal of these products.

4. Increasing Labor Costs: High labor costs in many countries have led businesses to move towards using mechanized equipment for greater efficiency and savings.

Segmentation of the Global Industrial Dishwasher Market:

The industrial dishwasher market is usually categorized based on various criteria, some examples of which are mentioned below.

• By Machine Type: Under Counter, Hood Type, Conveyor, Tabletop, and machines specialized for washing large pots and trays.

• By Application: Restaurants, hotels, hospitals, universities, catering services, and large industrial kitchens.

• By Geographic Region:

  • North America and Europe: These regions hold the largest market share due to strict hygiene standards and strong food industry infrastructure.

  • Asia-Pacific: The fastest growth rate in countries like China, India, and Southeast Asia, where the restaurant and food industry is expanding rapidly.

  • Middle East and Africa: With increasing investment in tourism and hotel development, demand for industrial kitchen equipment is growing.

New Market Trends:

• Smart and Digital Devices: Using touch screens, smart sensors, and remote control systems makes working with the device easier and more efficient.

• Saving Energy and Resources: Producing models with lower water and electricity consumption serves as an important competitive advantage driving market growth.

• Ergonomic and Optimized Design: Focus on reducing noise, increasing washing speed, and improving user experience leads to manager satisfaction and increased demand.

Future Outlook for the Global Industrial Dishwasher Market:

Given the growing food and beverage industry, increase in international travel, and expansion of the culture of using restaurant services, the global industrial dishwasher market is predicted to continue its upward trend in the coming years. Additionally, focus on Green Technologies and low-consumption equipment will be one of the main axes of innovation in this industry.

Export of Industrial Dishwashers in Iran:

Current Export Status of Iran:

Iran has managed to gain a significant export share in the household appliance and kitchen equipment industry in recent years. For example, Iran's exports of household appliances (which include part of kitchen equipment and heating/cooling appliances) have reached about $300 million per year. It has also been reported that Iran's exports of household appliances amounted to about $180 million in the first four months of a calendar year. Reports indicate that kitchenware, glassware, water heaters, heating and cooling appliances, and non-electric kitchen equipment are among the goods Iran exports to neighboring countries and the region.

Opportunities for Export:

• The market of neighboring countries and the region (Afghanistan, Iraq, CIS countries) can be a good destination due to proximity, similar consumption culture, and lower transportation costs.

• If product quality, after-sales service, and standards improve, Iran can achieve a better position in competition with producers from Turkey, China, and other countries.

• Government regulatory support, export facilitation, tariff reduction, and solving currency issues can play a key role in expanding these exports.

Export Obstacles:

• Price and quality competition with imported products from countries with stronger supply chains.

• Low mass production of large or specialized industrial versions within the country.

• Financial, tariff, and customs barriers, as well as currency transfer problems for importing parts and raw materials, which may negatively impact the final export cost.

Export Destinations for Iranian-made Dishwashers:

Afghanistan, Iraq, Oman, Bahrain, Syria, Lebanon, Nigeria.

Selected Iranian Brands of Industrial Dishwasher Manufacturers:

• Zagros Khayam Shargh

• Electrolux Iran

• Zanussi

• Singer Sanati (Industrial)

• Ernest

• Alborz Machine

Selected Foreign Brands:

• Hobart (Germany)

• Winterhalter (Germany)

• Electrolux (Italy/Sweden)

• Meiko (Germany)

• Fagor (Spain)

What is the Difference Between Industrial and Domestic Dishwashers?

Dishwashers play an important role in saving time and maintaining hygiene in daily life and work environments, but the needs and conditions of use in home kitchens are completely different from those in professional and high-consumption environments like restaurants, hotels, and catering services. Therefore, two main groups of dishwashers have been designed and produced: domestic dishwashers for families and limited use, and industrial dishwashers for commercial and industrial environments with high washing volumes. Understanding the differences between these two groups helps users and business owners choose a device suited to their actual needs and achieve the best efficiency. Next, we will examine the most precise differences in terms of capacity, speed, energy consumption, design, and costs.

1. Capacity and Washing Speed:

   • Domestic: Designed for families; capacity for 12-16 place settings (maximum 100-150 items per cycle). Each wash cycle usually takes 1 to 3 hours.

   • Industrial: For restaurants, hotels, and catering; can wash hundreds or even thousands of dishes per hour. The time per cycle is only 2 to 5 minutes.

2. Structure and Design:

   • Domestic: Sleek appearance, suitable for home kitchens, low noise.

   • Industrial: Thick stainless steel body, simpler but very robust design, capable of withstanding heavy and continuous work.

3. Water and Energy Consumption:

   • Domestic: Optimized water and electricity consumption for daily family use (about 10 liters of water per cycle).

   • Industrial: Water consumption per cycle might be higher, but due to short cycles and high washing volume, it consumes less water compared to manual washing.

4. Washing Temperature:

   • Domestic: Usually heats water to 60-70°C.

   • Industrial: Water temperature in disinfection stages reaches 80-90°C to ensure complete sterilization of dishes (especially important in restaurants and hospitals).

5. Installation and Usability:

   • Domestic: Simple connection to household water and electricity, user-friendly for the average consumer.

   • Industrial: Requires stronger utilities (three-phase electricity or gas), filtration system, rapid water drainage, and periodic service.

6. Price and Maintenance Cost:

   • Domestic: Lower price (in Iran, about 30 to 80 million Tomans).

   • Industrial: Higher price (depending on capacity and brand, from about 150 million to several hundred million Tomans).

Conclusion:

Industrial dishwashers are no longer a luxury choice for professional kitchens but have become a key necessity in restaurants, hotels, catering services, and any establishment with a high volume of dishes. Reviewing the various types of these devices, from tabletop and under-counter models to box-type, hood-type, and conveyor, shows that each is designed for specific conditions, and choosing the right one can multiply kitchen productivity.

Despite challenges such as high initial cost, need for regular maintenance, and energy consumption, the significant advantages of industrial dishwashers—including high speed, labor savings, better hygiene, and superior washing quality—make them a smart investment in the long run. Furthermore, given the growth of the global market and increasing attention to low-consumption and hygienic technologies, the future of these devices is brighter than ever.

Finally, the difference between industrial and domestic dishwashers is not just in size or capacity; it lies in their design philosophy and application. Domestic dishwashers are built for family comfort, while the industrial model is an important and vital component of a professional kitchen. Therefore, an informed and intelligent choice between these two types of dishwashers can guarantee the success of a business or the comfort of a family.