CBFI automatic water chiller producer

Let’s learn about the normal signs and troubleshooting of the cold storage today.1. Leakage of refrigerant[Fault analysis] After the refrigerant leaks in the system, the cooling capacity is insufficient, the suction and exhaust pressures are low, and the intermittent "squeak" airflow sound much larger than usual can be heard at the expansion valve. The evaporator is free of frost or a small amount of floating frost. If the expansion valve hole is enlarged, the suction pressure will not change much. After shutdown, the equilibrium pressure in the system is generally lower than the saturation pressure corresponding to the same ambient temperature.[Exclusion method] After the refrigerant leaks, do not rush to fill the system with refrigerant, but immediately find the leakage point, and then charge the refrigerant after repair.2. Too much refrigerant is charged after maintenance[Fault analysis] The amount of refrigerant charged in the refrigeration system after repair exceeds the capacity of the system, and the refrigerant will occupy a certain volume of the condenser, reduce the heat dissipation area, and reduce the cooling efficiency, and the suction and discharge pressures are generally high. At the normal pressure value, the evaporator is not frosted, and the temperature in the warehouse is slowed down.[Exclusion method] According to the operating procedure, the excess refrigerant must be discharged at the high-pressure shut-off valve after a few minutes of shutdown, and the residual air in the system can also be discharged at this time.3. There is air in the refrigeration system[Fault analysis] Air in the refrigeration system will reduce the refrigeration efficiency. The prominent phenomenon is that the suction and discharge pressure increase (but the discharge pressure has not exceeded the rated value), and the temperature from the compressor outlet to the condenser inlet increases significantly. Due to the air in the system, the exhaust pressure and exhaust temperature both increase.[Exclusion method] You can release air from the high-pressure shut-off valve several times in a few minutes after the shutdown, and you can also fill some refrigerant appropriately according to the actual situation. 4. Low compressor efficiency[Fault analysis] The low efficiency of the refrigeration compressor refers to the decrease in the actual displacement under the condition that the operating conditions remain unchanged, resulting in a corresponding decrease in the refrigeration capacity. This phenomenon mostly occurs on compressors that have been used for a long time. The wear is large, the matching gap of each part is large, and the sealing performance of the valve is reduced, which causes the actual displacement to decrease.【elimination method】⑴ Check whether the cylinder head paper gasket is broken down and cause leakage, if any, replace it.⑵ Check whether the high and low pressure exhaust valves are not tightly closed, and replace them if they are.⑶ Check the matching clearance between the piston and the cylinder. If the clearance is too large, replace it.5. The frost on the surface of the evaporator is too thick[Fault analysis] The cold storage evaporator used for a long time should be defrosted regularly. If it does not defrost, the frost layer on the evaporator pipe will become thicker and thicker. When the entire pipe is wrapped in a transparent ice layer, it will seriously affect heat transfer. As a result, the temperature in the warehouse does not fall within the required range. [Exclusion method] Stop defrosting, open the warehouse door to allow air to circulate, or use a fan to accelerate the circulation to reduce the defrosting time.6. There is refrigerating oil in the evaporator pipeline[Fault analysis] During the refrigeration cycle, some refrigerating oil remains in the evaporator pipeline. After a long period of use, when there is more residual oil in the evaporator, it will seriously affect the heat transfer effect and cause poor cooling.[Exclusion method] Remove the refrigerating oil in the evaporator. Remove the evaporator, blow it out, and then dry it. If it is not easy to disassemble, use a compressor to pump air from the entrance of the evaporator, and then use a blowtorch to dry it.7. The refrigeration system is not unblocked[Fault analysis] As the refrigeration system is not cleaned, after a certain period of use, the dirt gradually accumulates in the filter, and part of the mesh is blocked, which reduces the refrigerant flow rate and affects the cooling effect. In the system, the expansion valve and the filter at the suction port of the compressor are also slightly blocked.[Exclusion method] The micro-blocking parts can be removed, cleaned, dried, and then reinstalled.8. Cold Storage Room filter is clogged[Fault analysis] The desiccant has been used for a long time and becomes a paste to seal the filter, or dirt gradually accumulates in the filter and causes blockage.[Exclusion method] Remove the filter, clean, dry, replace with a new desiccant, and install it into the system.9. The refrigerant leaks in the temperature sensing bulb of the expansion valve[Fault analysis] After the temperature sensing agent in the expansion valve temperature sensor leaks, the two forces below the diaphragm push the diaphragm upward, and the valve hole is closed, and the refrigerant in the system cannot pass through, resulting in no cooling, and the expansion valve does not freeze Frost, the low pressure presents a vacuum, and no airflow sound can be heard in the evaporator.[Remedy] Shut down and close the shut-off valve, remove the expansion valve to check whether the filter is blocked, if not, use the mouth to blow the inlet of the expansion valve to see if it is ventilated. It can also be inspected visually or disassembled for inspection, and replaced when damaged.

The ice maker machine needs regular maintenance to ensure the stable operation and long-term use of the equipment.During the long-term use of the equipment in different environments (including harsh environments), the wear of mechanical parts, increased gaps, and changes in coordination will directly affect the original balance of the equipment. The stability, reliability, and use efficiency of the equipment will be reduced to a considerable extent, and even cause the mechanical equipment to lose its inherent basic performance and fail to operate normally.In this way, equipment needs to be overhauled or replaced, which undoubtedly increases the cost of the enterprise and affects the reasonable allocation of enterprise resources. As the ice maker has a higher technical content than other refrigeration equipment, the quality of the ice maker's operating environment and regular maintenance are extremely important to the service life and ice making effect of the ice maker. Let me tell you about the daily cleaning plan of the down tube ice machine.1. Water tank cleaningBoth the water tank and the water pump should be kept clean without any accumulation of foreign matter. When sediments do occur (there is a lot of foreign matter or clay accumulation), the water tank should be thoroughly cleaned. If the machine is stopped for more than one day, the water tank should be cleaned once before restarting to ensure the quality of ice making. The specific cleaning steps are as follows:(1). Shut down and turn off the main power supply.(2). Release all the water in the water tank through the drain valve, and clean the dirt in the water tank with detergent and a long-handled brush, and rinse with clean water several times until there is no dirt.(3). Inject new water to the liquid level when the float valve stops water supply and it can be turned on and used.2. Tube ice machine evaporation tube cleaningIn the case of long-term use, a small amount of dirt may accumulate on the inner wall of the evaporation tube, which requires regular cleaning. The frequency of cleaning depends on the water quality. In areas with hard water (the lime content in the local water is too high), it is necessary to clean once every 3-6 months, and in areas with normal or "soft" water, twice a year enough. The specific cleaning steps are as follows:(1). Release the water in the water tank first. Add clean water until the water tank is nine minutes full and close the water supply valve. Add 2.1 liters of high-purity citric acid and mix it with water.(2). Turn off the refrigeration compressor and close the shut-off valve of the liquid line; turn on the pump (in the absence of refrigeration) to run and circulate for about 2-3 hours. (Press "Start Cleaning" to clean; press "Stop Cleaning" to stop cleaning.)(3). After the sewage is released, inject new water and circulate for about 30 minutes. After cleaning the remaining detergent, release the second water. Cycle cleaning more than twice to ensure that the cleaning agent has been washed(4). Open the water supply valve and restore the refrigeration system to return the machine to normal operation. Inject new water to the level when the float valve stops supplying water and it can be turned on.3. Water-cooled condenser cleaningDuring the operation of the condenser, the cooling water will produce scale inside the pipe, which will affect the heat exchange effect. It should be cleaned frequently to improve the cooling efficiency. The frequency of cleaning depends on the water quality. In areas with extremely hard water, it is necessary to clean once every three months, while in areas with normal or "soft" water, only two times a year. The cooling system includes a cooling water tower and a water-cooled condenser, in order to make the machine run smoothly and ensure the service life of the machine. The cooling water tower should also be cleaned in time to ensure the efficiency of ice making.The specific cleaning steps of the tube ice machine are as follows:(1). Shut down and clean the cooling water tower with a brush first.(2). If the cooling tower is higher than the condenser, drain the cooling tower water first or close the condenser and the cooling tower inlet and outlet water valves.(3). Open the drain valve under the end cover of the condenser to drain the water in the condenser.(4). Remove the end caps at both ends of the condenser. Clean each copper pipe back and forth with a dedicated condenser brush, and then rinse it with water several times until it is clean.(5). After cleaning, reinstall the end cap and connect the pipe.                   

       Today, Guangzhou Bingquan will introduce to you the cooling effect of plate ice machine in the photoelectric semiconductor composite raw material in the reactor.       Photoelectric semiconductor composite materials are used to manufacture various optoelectronic devices, mainly including various active and passive photoelectric sensors, optical information processing and storage devices, and optical communication materials.       The materials used to manufacture semiconductors include silicon wafers, electronic gases, photomasks, photoresist supporting chemicals, polishing materials, photoresists, wet chemicals and sputtering targets.       Similar to the chemical processing technology, the raw materials for manufacturing optoelectronic semiconductor composite materials also need to be carried out in a reactor. The reaction of raw materials in the reactor also requires the support of a stable temperature. Therefore, putting ice cubes into the reactor is the best cooling method, and plate ice is the most suitable of all ice cubes.       Why not choose other types of ice?      Flake ice is thinner than slab ice and melts too fast. Although ice bricks are resistant to melting, they are relatively large and need to be broken. The slab ice is of moderate size and will neither melt too fast nor too slowly.      Slab ice is a transparent, dry, hard, and irregular ice cube with a thickness of 2-20mm and a size of 30×40mm～60×100mm. It has the characteristics of high cleanliness, high density, good air permeability, small surface area, uniform cooling effect, large cold storage capacity, no powder, constant refrigeration temperature, and adjustable ice size.     The picture below shows a 20-ton plate ice plant built by Guangzhou Bingquan for one of its customers. It is used to cool down the photoelectric semiconductor composite raw materials in the reactor.       Customer feedback said that the yield of raw materials after adding plate ice to cool the reactor has increased by nearly 20%-30%, the economic efficiency of the product has been greatly improved, and a lot of production costs have been saved. 

The upstream industry of the ice maker machine is mainly composed of condensers, refrigerators, compressors, water pumps, sensors, and discharge screws. According to the principle of the evaporator and the different production methods, the shape of the ice cubes produced is also different; people generally divide ice machines into cube ice machines, flake ice machines, plate ice machines, tube ice machines, ice block machines, etc. Ice maker machines are mainly divided into industrial ice machines and commercial ice machines. Industrial ice machines include ice block machines, industrial flake ice machines, plate ice machines, commercial ice machines include tube ice machines, cube ice machines, commercial flake ice machines, ball ice machines and pure ice machines.Now we talk about 3 kinds of  commercial ice machines:Tube ice machine has  Freon System Tube Ice Machine(1-30tons daily capacity) and Ammonia System ones(above 30tons, Even above 100tons daily capacity) .The tube ice machine is a mechanical device for producing tube ice. It has a hollow or solid cylinder that is widely used for beverage cooling in cafes, bars, restaurants and hotels.Guangzhou Icesource Co., Ltd. is the inventor of the large ice cube machine(1-20tons daily capacity), using our self-developed technology, such as flat liquid film heat exchange and circulating hot gas ice harvesting to solve the problem of low capacity, high energy consumption, small ice thickness, and unstable harvest of ice that plagues the entire industry.CBFI is your first choice for setting up an ice factory.The large-scale edible ice cube machine is a large-capacity ice making machine that produces ice cubes. The ice cubes are hygienic and widely used in places where ice is needed, such as hotels, bars, restaurants, convenience stores, and cold drink shops.The ice flake machineis an ice making machine for producing dry, loose white ice flakes with a thickness of 1 to 2 mm. The ice flake has a large contact surface and can be rapidly cooled and thoroughly mixed without sharp points to damage the product to be cooled. The ice flaker machine is a leader in fast and large-scale refrigeration projects, and is widely used in supermarket food preservation, fishery protection, food processing, concrete cooling, etc.