Water chilling unit

Abstract

The utility model discloses a water chilling unit. The water chilling unit comprises a rack; the water tank is arranged on the rack and comprises a water storage cavity, and the water tank is used for being connected with the cooling pond; the water pump assembly is arranged on the rack and connected to the water tank; the shell-and-plate evaporator is arranged on the rack, a heat exchange channel is formed in the shell-and-plate evaporator, the heat exchange channel is connected to the water pump assembly, the heat exchange channel is used for cooling water flowing out of the water pump assembly, and the heat exchange channel can be connected to the cooling pond so as to convey cooling water to the cooling pond; the water tank, the heat exchange channel and the water pump assembly are communicated through the water flow pipeline, and the water flow pipeline is further used for being connected with a cooling pond. By using the plate shell type evaporator with high heat exchange efficiency, the heat exchange efficiency is improved, meanwhile, the filling amount of a refrigerant is reduced, the overall energy efficiency of the water chilling unit is further improved, and the high refrigeration efficiency of the water chilling unit is guaranteed. In addition, the water chilling unit adopts the modular skid design, so that the water chilling unit is more suitable for the space-limited environment.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a chiller. Background Art

[0002] As frozen food has gradually become an important part of consumers' daily diet, the frozen food industry has also achieved rapid development in technology, product variety and structure.

[0003] Chillers are essential in the frozen food processing process, primarily for cooling, rinsing, and cleaning food. In related technologies, chillers commonly use shell-and-tube evaporators to reduce water temperature. However, shell-and-tube evaporators are bulky, and chillers using them require excessive space, compromising space in production workshops. Utility Model Content

[0004] To achieve the above objectives, the present invention discloses a chiller comprising:

[0005] frame;

[0006] A water tank is provided on the frame, the water tank includes a water storage cavity, and the water tank is used to connect to the cooling pool;

[0007] A water pump assembly is arranged on the frame, and the water pump assembly is connected to the water tank;

[0008] A plate and shell evaporator is mounted on a frame and has a heat exchange channel therein. The heat exchange channel is connected to a water pump assembly and is used to cool water flowing out of the water pump assembly. The heat exchange channel can be connected to a cooling pool to deliver cooling water to the cooling pool.

[0009] Water flow pipeline, the water flow pipeline connects the water tank, heat exchange channel and water pump assembly, and the water flow pipeline is also used to connect to the cooling pool.

[0010] In one possible implementation, the plate and shell evaporator includes a refrigerant connecting pipe, and the chiller further includes:

[0011] The throttling component is arranged in the refrigerant connecting pipeline.

[0012] In one possible implementation, the water flow pipeline includes:

[0013] A pump outlet pipeline, the pump outlet pipeline is connected to the water outlet of the water tank and the water inlet of the water pump assembly;

[0014] A circulation pipeline, the circulation pipeline is connected to the water pump assembly and the heat exchange channel, and the circulation pipeline can be connected to the cooling pool;

[0015] Cleaning pipeline, the cleaning pipeline is connected to the heat exchange channel and the water tank.

[0016] In one possible implementation, the circulation pipeline includes:

[0017] a first pipeline, the first pipeline being connected to the water outlet of the water pump assembly, and the first pipeline being connected to the water inlet of the heat exchange channel;

[0018] A second pipeline, the second pipeline is connected to the water outlet of the heat exchange channel, and the second pipeline is used to communicate with the cooling pool;

[0019] a first valve body, disposed in the first pipeline;

[0020] The second valve body is arranged in the second pipeline.

[0021] In one possible implementation, cleaning the pipeline includes:

[0022] A third pipeline, the third pipeline is connected to the water outlet of the water pump assembly, and the third pipeline is connected to the water outlet of the heat exchange channel;

[0023] a fourth pipeline connected between the water inlet of the heat exchange channel and the water inlet of the water tank;

[0024] a third valve body, disposed in the third pipeline;

[0025] The fourth valve body is arranged in the fourth pipeline.

[0026] In one possible implementation, the chiller further includes:

[0027] The fifth valve body is arranged on the pump outlet pipeline.

[0028] In one possible implementation, the water pump assembly includes:

[0029] a first water pump, wherein the water inlet of the first water pump is connected to the pump outlet pipeline, and the water outlet of the first water pump is connected to the first pipeline and the third pipeline;

[0030] The second water pump has a water inlet connected to the pump outlet pipeline, and a water outlet connected to the first pipeline and the third pipeline.

[0031] In one possible implementation, the chiller further includes:

[0032] A filter element is arranged in the water storage cavity;

[0033] The water tank comprises a water inlet and a water outlet. The water inlet of the water tank is used to communicate with the cooling pool. The filter element is located between the water inlet and the water outlet of the water tank.

[0034] In a possible implementation, the water tank is located on one side of the frame, the water pump assembly is located on the other side of the frame, and the plate and shell evaporator is located between the water tank and the water pump assembly.

[0035] In one possible implementation, the volume of the chiller is V, where V>4m 3 , V<7m 3 .

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] Thus, the chiller provided in the embodiment of the present application improves heat exchange efficiency by using a plate-and-shell evaporator with high heat exchange efficiency, while reducing the refrigerant charge, further improving the overall energy efficiency of the chiller and ensuring the high cooling efficiency of the chiller. In addition, the chiller uses a modular skid design, which reduces the overall volume of the chiller and makes it more suitable for environments with limited space. Through this modular design, the chiller can be quickly put into use during on-site installation by simply making a simple pipe connection, greatly reducing on-site workload and installation time, and improving overall installation efficiency and convenience.

[0038] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A top view of the chiller provided in an embodiment of the present application;

[0041] Figure 2 A schematic diagram of the pipe connections of a chiller provided in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 100-chiller; 10-rack; 20-water tank; 201-filter element; 30-water pump assembly; 301-first water pump; 302-second water pump; 40-plate and shell evaporator; 50-water flow pipeline; 501-pump outlet pipeline; 5011-fifth valve body; 502-circulation pipeline; 5021-first pipeline; 5022-second pipeline; 5023-first valve body; 5024-second valve body; 503-cleaning pipeline; 5031-third pipeline; 5032-fourth pipeline; 5033-third valve body; 5034-fourth valve body; 200-cooling tank. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0046] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0048] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0049] After decades of development, the frozen food industry has become a successful example of the industrialization of traditional Chinese foods. As frozen foods have become an integral part of the daily diets of urban Chinese consumers, the industry has also experienced rapid advancements in technology, product variety, and structure. In particular, within the meat slaughtering and processing sector, the production model for frozen foods has become centralized, and the construction and commissioning of large-scale meat freezing plants have placed higher performance requirements on production equipment.

[0050] Chillers are essential in the frozen food processing process, primarily for cooling, rinsing, and cleaning food. Shell-and-tube evaporators are commonly used in chillers to reduce water temperature. However, shell-and-tube evaporators are bulky, requiring excessive space in chillers, which can complicate the spatial layout of production workshops. Furthermore, the evaporation efficiency of shell-and-tube evaporators is low, requiring large amounts of refrigerant to be filled. This reduces the safety of shell-and-tube evaporators in the food processing industry.

[0051] In light of this, this application proposes a chiller that eliminates the traditional shell-and-tube evaporator and separates the cooling system's cooling components (compressor and condenser, etc.) from the chiller. This design not only significantly reduces the overall size of the chiller, but also ensures that cooling efficiency is not affected, and improves the overall performance of the chiller.

[0052] Figure 1 shows a top view of the chiller provided in an embodiment of the present application, Figure 2 A schematic diagram illustrating the piping connections of a chiller is shown. The chiller 100 includes: a frame 10; a water tank 20 disposed on the frame 10, the water tank 20 including a water storage chamber and configured to connect to a cooling pool 200; a water pump assembly 30 disposed on the frame 10 and connected to the water tank 20; a plate-and-shell evaporator 40 disposed on the frame 10, the plate-and-shell evaporator 40 having a heat exchange channel therein connected to the water pump assembly 30 for cooling water flowing out of the water pump assembly 30, and capable of being connected to the cooling pool 200 to deliver cooling water thereto; and a water flow pipeline 50 connecting the water tank 20, the heat exchange channel, and the water pump assembly 30, and further configured to connect to the cooling pool 200.

[0053] like Figure 1 As shown, the frame 10 is the basic supporting structure of the entire chiller 100. The frame 10 is used to stably support key components such as the water tank 20, the water pump assembly 30 and the plate and shell evaporator 40, thereby ensuring the stability and safety of the entire chiller 100 during operation.

[0054] Components such as the water tank 20, the water pump assembly 30, and the plate-and-shell evaporator 40 are arranged on the frame 10, realizing the overall modularization of the chiller 100. In the related art, the evaporator, the water pump, and the water tank 20 are usually installed and connected separately as independent devices, which not only increases the complexity and workload of on-site installation, but also prolongs the installation time. In the chiller 100 in the embodiment of the present application, key components such as the water tank 20, the water pump assembly 30, and the plate-and-shell evaporator 40 are pre-integrated on the frame 10, so that the chiller 100 forms a plug-and-play skid. In this way, when the chiller 100 is installed on-site, only simple pipe connections need to be made and it can be quickly put into use, which greatly simplifies the installation process, reduces the workload of on-site construction, shortens the installation period, and improves the overall installation efficiency and convenience.

[0055] like Figure 2 As shown, the production workshop includes a cooling pool 200 for cooling and rinsing food. After the chiller 100 is assembled, the water flow pipeline 50 of the chiller 100 can be connected to the cooling pool 200 to provide cooling water to the cooling pool 200. To reduce resource waste, after use, the water in the cooling pool 200 will flow back to the chiller 100 through the water flow pipeline 50 for cooling and then enter the cooling pool 200 for use again, thereby recycling and saving energy.

[0056] The water tank 20 includes a water storage chamber for storing and regulating water. The water tank 20 is connected to the cooling pool 200. The water used in the cooling pool 200 can be stored in the water tank 20 to ensure that there is enough water in the water tank 20 to meet the needs of continuous operation of the chiller 100.

[0057] The water tank 20 can be made of stainless steel or other corrosion-resistant materials to ensure that the water in the water tank 20 is not contaminated and to extend the service life of the water tank 20. The water tank 20 is also equipped with various interfaces and valves to facilitate connection with the water pump assembly 30 and the cooling pool 200 to ensure smooth water flow.

[0058] like Figure 1 and Figure 2 As shown, the water pump assembly 30 is the power unit of the chiller 100 . The water pump assembly 30 is used to pump water in the water tank 20 to the plate and shell evaporator 40 for cooling, and then pump the cooled water out to the cooling pool 200 .

[0059] Optionally, the water pump assembly 30 can use a high-efficiency variable frequency water pump. Since the demand for cooling water is constantly changing during the food processing process, the variable frequency water pump can infinitely adjust the water supply, thereby accurately meeting the food processing production needs.

[0060] The plate-and-shell evaporator 40 comprises a plurality of thin plates, forming heat exchange channels between the plates. These channels are wider than those of conventional plate heat exchangers, allowing for sufficient heat exchange between the water and refrigerant on either side of the thin plates while preventing blockage. As the water flows through the heat exchange channels of the plate-and-shell evaporator 40, it can fully exchange heat with the refrigerant within the evaporator 40, thereby increasing the heat exchange area and improving the heat exchange efficiency of the evaporator 40.

[0061] Optionally, the heat transfer coefficient of the plate and shell evaporator 40 is 1300 W / (m 2 K) or above.

[0062] It should be noted that, at the same heat exchange efficiency, the plate-and-shell evaporator 40 occupies less space than a traditional shell-and-tube evaporator. While achieving the same cooling capacity, the volume of the plate-and-shell evaporator 40 is less than 1 / 10 of that of a shell-and-tube evaporator, enabling miniaturization of the chiller 100. When modularly integrated with the water tank 20 and water pump, the volume of the chiller 100 is less than 1 / 4 of that of a shell-and-tube evaporator, significantly reducing the chiller's footprint.

[0063] Furthermore, the volume of the chiller 100 can be 4m 3 Up to 7m 3 This greatly reduces the space occupied by the chiller 100 in the production workshop, allowing for further optimization of the local area of ​​the production workshop.

[0064] Specifically, the chiller 100 may be 3 m high, 1.2 m wide, and 1.5 m high.

[0065] Optionally, during the assembly of the chiller 100, the plate-and-shell evaporator 40 can be assembled with the cold source (compressor and condenser, etc.). In the embodiment of the present application, refrigerant is delivered to the plate-and-shell evaporator 40 of the chiller 100 by throttling to separate the flash gas and then supplying liquid to the plate-and-shell evaporator 40. The plate-and-shell evaporator 40 is then filled with liquid refrigerant. This flooded cooling method further improves the heat exchange efficiency of the plate-and-shell evaporator 40, reduces the injection of refrigerant, and stabilizes the temperature of the cooling water after cooling.

[0066] The plate and shell evaporator 40 can effectively cool the water delivered by the water pump assembly 30 to ensure that the cooling water reaches the required temperature and then flows into the cooling pool 200 to meet the cooling demand of the cooling pool 200 in the production workshop.

[0067] The water flow pipeline 50 is used to connect the water tank 20, the heat exchange channel and the water pump assembly 30 to ensure unobstructed water flow. Figure 1As shown, the water flow pipeline 50 connects the water tank 20, the heat exchange channel and the water pump assembly 30, and is connected to the cooling pool 200 to form a complete water circulation system.

[0068] Optionally, the water flow pipeline 50 can be made of stainless steel or other corrosion-resistant materials to ensure that the water flow pipeline 50 has excellent sealing performance and durability.

[0069] Thus, the chiller 100 provided in the embodiment of the present application improves the heat exchange efficiency by using a plate-and-shell evaporator 40 with high heat exchange efficiency, while reducing the refrigerant charge, further improving the overall energy efficiency of the chiller 100 and ensuring the high cooling efficiency of the chiller 100. In addition, the chiller 100 uses a modular skid design, which reduces the overall volume of the chiller 100, making the chiller 100 more suitable for environments with limited space. Through this modular design, the chiller 100 can be quickly put into use when installed on site by simply making a simple pipe connection, greatly reducing the workload and installation time on site and improving the overall installation efficiency and convenience.

[0070] In some embodiments, the plate and shell evaporator 40 includes a refrigerant connecting pipeline, and the chiller 100 further includes: a throttling component, which is arranged on the refrigerant connecting pipeline.

[0071] The plate and shell evaporator 40 includes a refrigerant connecting pipe connected to the compressor and condenser set in the production workshop. The refrigerant connecting pipe can transport the refrigerant condensed by the condenser to the plate and shell evaporator 40 to cool the low-temperature refrigerator and the water flow pumped out by the water pump assembly 30.

[0072] The refrigerant connecting line is equipped with a throttling component that limits the refrigerant flow rate. When high-pressure liquid refrigerant flows through the throttling component, the pressure drop causes some of the liquid refrigerant to flash off, forming a gas-liquid mixture. The refrigerant is then transported to the plate and shell evaporator 40, where sufficient evaporation pressure is generated.

[0073] Due to the limiting effect of the throttling component, more liquid refrigerant can be maintained inside the evaporator, which is equivalent to a full liquid refrigeration state, thereby ensuring that the plate and shell evaporator 40 has a higher heat exchange efficiency and a more stable heat exchange effect on the water flow.

[0074] In addition, the higher heat exchange efficiency also saves the amount of refrigerant injected, which is about 10%-20% of the refrigerant injection amount of the shell and tube heat exchanger used in the related technology. Reducing the amount of refrigerant can further ensure the safety of the food processing process.

[0075] Optionally, the throttling component may be an expansion valve or a throttling orifice plate.

[0076] In some embodiments, as Figure 2 As shown, the water flow pipeline 50 includes a pump-out pipeline 501, which is connected to the water outlet of the water tank 20 and the water inlet of the water pump assembly 30; a circulation pipeline 502, which is connected to the water pump assembly 30 and the heat exchange channel, and the circulation pipeline 502 can be connected to the cooling pool 200; and a cleaning pipeline 503, which is connected to the heat exchange channel and the water tank 20.

[0077] The water flow circuit 50 includes a pump-out line 501. One end of the pump-out line 501 is connected to the water outlet of the water tank 20, and the other end is connected to the water inlet of the water pump assembly 30. When the water pump assembly 30 is activated and begins pumping water, water in the water tank 20 flows through the water outlet into the pump-out line 501. The water is then pumped and pressurized by the water pump assembly 30, providing power for the subsequent circulation or cleaning process.

[0078] like Figure 2 As shown, the water flow pipeline 50 also includes a circulation pipeline 502. The circulation pipeline 502 is connected to the output end of the water pump assembly 30, that is, it is connected to the water tank 20. The circulation pipeline 502 is also connected to the heat exchange channel and the cooling pool 200. During the operation of the chiller 100, the water in the water tank 20 connected to the cooling pool 200 is pressurized by the water pump assembly 30, and the water flow is sent into the heat exchange channel through the circulation pipeline 502, and heat is exchanged with the refrigerant in the plate and shell evaporator 40, thereby reducing the water temperature. Then, the cooled cooling water flows into the cooling pool 200 again through the circulation pipeline 502, realizing the recycling of water flow. The setting of the circulation pipeline 502 ensures the continuous flow and efficient utilization of water flow. For example, Figure 2 The direction of the arrow indicated by the solid line shows the flow direction of the cooling water.

[0079] like Figure 2 As shown, in order to keep the heat exchange channel and the entire chiller 100 clean and operate efficiently, the water flow pipeline 50 may also include a cleaning pipeline 503. The cleaning pipeline 503 is connected to the heat exchange channel and is also connected to the water tank 20. When the cooling water preparation work is completed, when the heat exchange channel needs to be cleaned, a cleaning liquid or water flow for cleaning can be injected into the water tank 20, and the cleaning liquid or water flow is injected into the heat exchange channel through the cleaning pipeline 503 to remove dirt and impurities attached to the inner wall of the heat exchange channel. After cleaning is completed, the cleaning liquid or clean water will be discharged from the chiller 100 through a specific waste outlet, ensuring the unobstructed heat exchange channel and efficient heat exchange performance. For example, Figure 2 The direction of the arrow indicated by the dotted line shows the flow direction of the clean water.

[0080] Optionally, the waste outlet can be communicated with the heat exchange channel or the water tank 20 and be in a normally closed state and opened only after the heat exchange channel is cleaned.

[0081] In some embodiments, as Figure 2 As shown, the circulation pipeline 502 includes: a first pipeline 5021, the first pipeline 5021 is connected to the water outlet of the water pump assembly 30, and the first pipeline 5021 is connected to the water inlet of the heat exchange channel; a second pipeline 5022, the second pipeline 5022 is connected to the water outlet of the heat exchange channel, and the second pipeline 5022 is used to connect to the cooling pool 200; a first valve body 5023, which is arranged on the first pipeline 5021; and a second valve body 5024, which is arranged on the second pipeline 5022.

[0082] The first pipeline 5021 and the second pipeline 5022 connect the water tank 20, the water pump assembly 30, the plate and shell heat exchanger and the cooling pool 200 to form a circulation flow path for cooling, using, recooling and reusing the water flow.

[0083] The chiller 100 may be provided with a control device connected to the first valve body 5023 and the second valve body 5024 . The control device may receive a control instruction and control the operation of the first valve body 5023 and the second valve body 5024 according to the control instruction.

[0084] The first valve body 5023 is mounted on the first pipeline 5021. It responds to commands from the control device to regulate the flow of water entering the heat exchange channel. When the water temperature in the heat exchange channel is too high or when accelerated heat exchange is required, the control device controls the first valve body 5023 to adjust the flow rate, allowing more water to pass through to improve heat exchange efficiency. Conversely, when heat exchange is sufficient or demand is low, the first valve body 5023 is appropriately closed to reduce unnecessary energy and water consumption.

[0085] A second valve body 5024 is provided on the second pipe 5022 and is used to control the flow of water from the heat exchange channel to the cooling pool 200. By precisely adjusting the opening of the second valve body 5024 through a control device, the water level in the cooling pool 200 can be maintained stable, ensuring that the cooling water circulates at an appropriate temperature.

[0086] In some embodiments, as Figure 2 As shown, the cleaning pipeline 503 includes: a third pipeline 5031, the third pipeline 5031 is connected to the water outlet of the water pump assembly 30, and the third pipeline 5031 is connected to the water outlet of the heat exchange channel; the fourth pipeline 5032, the fourth pipeline 5032 is connected between the water inlet of the heat exchange channel and the water inlet of the water tank 20; a third valve body 5033, which is arranged in the third pipeline 5031; and a fourth valve body 5034, which is arranged in the fourth pipeline 5032.

[0087] The third pipe 5031 and the fourth pipe connect the water tank 20, the water pump and the plate and shell heat exchanger to clean the heat exchange channel in the plate and shell heat exchanger. The third valve body 5033 and the fourth valve body 5034 are also electrically connected to the control device.

[0088] As previously mentioned, the cooling pool 200 can be used to rinse slaughtered meat with cooling water. During use, the cooling water may continuously be mixed with impurities such as meat blood, grease, and hair. Since the cooling water is circulated, these impurities may cause blockage of the heat exchange channel, thereby affecting the heat exchange efficiency of the plate and shell evaporator 40. Therefore, after the chiller 100 stops preparing cooling water, the control device can control the first valve body 5023 and the second valve body 5024 to close, and open the third valve body 5033 and the fourth valve body 5034 to close the circulation pipeline 502, open the cleaning pipeline, and start cleaning the heat exchange channel.

[0089] The water tank 20 can be connected to a clean water source, which can be clean water (alkaline water) or clean water. When the third valve body 5033 and the fourth valve body 5034 are opened, the clean water or clean water in the water tank 20 can enter the heat exchange channel to clean the heat exchange channel.

[0090] After the control device opens third valve 5033, pressurized clean water or clear water from water pump assembly 30 flows directly to the outlet of the heat exchange channel through third pipe 5031. Simultaneously, fourth valve 5034 is also opened, allowing the used clean water or clear water to flow back into water tank 20. Water tank 20 may be equipped with a filter device to filter out impurities before it can be used to flush the heat exchange channel.

[0091] The water tank 20 may be provided with a waste outlet. When the water quality does not meet the flushing conditions, the water may be discharged from the chiller 100 through the waste outlet on the water tank 20 .

[0092] It can be seen from this that Figure 2 As shown, in the heat exchange channel, the flow direction of clean water or clear water (indicated by the dotted arrow) is opposite to the flow direction of the cooling water in the circulation pipe 502 (indicated by the solid arrow). The reverse flow of water or cleaning fluid can more effectively flush the inner wall of the heat exchange channel, especially the hard-to-reach corners and crevices, and remove the accumulated dirt, sediment and impurities in the heat exchange channel. The backwashing process not only enhances the thoroughness of the cleaning, but also improves the heat exchange efficiency of the heat exchange channel, thereby improving the operating efficiency of the entire chiller 100.

[0093] In this way, when the plate and shell heat exchanger needs to be flushed, the operator only needs to issue a control instruction to the control device to automatically clean the heat exchange channel of the plate and shell heat exchanger, thereby improving the intelligence level of the chiller 100.

[0094] In some embodiments, as Figure 2 As shown, the chiller 100 further includes a fifth valve body 5011 , which is disposed on the pump outlet pipeline 501 .

[0095] The fifth valve body 5011 is also connected to the control device. By precisely adjusting the opening of the fifth valve body 5011, the operator can accurately control the amount of water flowing from the water tank 20 to the water pump assembly 30. When the operating load is low, appropriately closing the fifth valve body 5011 can reduce the amount of water entering the water pump assembly 30. Conversely, when the chiller 100 needs to quickly cool down or handle a large heat load, increasing the opening of the fifth valve body 5011 can ensure that sufficient water is quickly pumped into the heat exchange channel, improving heat exchange efficiency and ensuring the cooling performance of the chiller 100.

[0096] Optionally, the first valve body 5023 , the second valve body 5024 , the third valve body 5033 , the fourth valve body 5034 and the fifth valve body 5011 may all be solenoid valves.

[0097] In some embodiments, as Figure 1 and Figure 2 As shown, the water pump assembly 30 includes a first water pump 301 and a second water pump 302. The water inlet of the first water pump 301 is connected to the pump outlet pipeline 501, and the water outlet of the first water pump 301 is connected to the first pipeline 5021 and the third pipeline 5031; the water inlet of the second water pump 302 is connected to the pump outlet pipeline 501, and the water outlet of the second water pump 302 is connected to the first pipeline 5021 and the third pipeline 5031.

[0098] The first water pump 301 and the second water pump 302 are connected in parallel to the pump outlet pipe 501 and between the first pipe 5021 and the third pipe 5031. The parallel connection of the first water pump 301 and the second water pump 302 improves the flow rate regulation capability and water supply stability of the chiller 100. Because the first water pump 301 and the second water pump 302 can operate simultaneously or independently, the chiller 100 can flexibly adjust the total flow rate according to actual needs, ensuring a stable and sufficient cooling water flow under various operating conditions.

[0099] At the same time, the parallel connection of the first water pump 301 and the second water pump 302 also enhances the reliability of the chiller 100. When a single water pump fails, the other water pump can immediately take over the work, ensuring that the chiller 100 can continue to operate without being affected.

[0100] In some embodiments, as Figure 2As shown, the chiller 100 also includes: a filter element 201, which is arranged in the water storage cavity; the water tank 20 includes a water inlet and a water outlet, the water inlet of the water tank 20 is used to connect to the cooling pool 200, and the filter element 201 is located between the water inlet of the water tank 20 and the water outlet of the water tank 20.

[0101] By adding a filter element 201 to the water tank 20 and ensuring that the filter element 201 is located between the water inlet and outlet of the water tank 20, the water flowing from the cooling pool 200 into the water tank 20 can be effectively filtered. This removes impurities and particulate matter that may be present in the cooling water after use, improves the cleanliness of the circulating water used by the chiller 100, and reduces failures and maintenance costs caused by water quality problems.

[0102] Optionally, the filter element 201 may be a filter mesh, a filter core, a screen, or a combination thereof.

[0103] In some embodiments, as Figure 1 As shown, the water tank 20 is located on one side of the frame 10 , the water pump assembly 30 is located on the other side of the frame 10 , and the plate and shell evaporator 40 is located between the water tank 20 and the water pump assembly 30 .

[0104] The arrangement of the water tank 20, evaporator, and water pump assembly 30 in this manner makes the entire chiller 100 more compact. This compact design not only facilitates installation and transportation of the unit, but also reduces the space requirements for the machine room, allowing the chiller 100 to be more flexibly adapted to various site conditions.

[0105] The close connection between the water tank 20, the water pump assembly 30 and the plate and shell evaporator 40 also reduces the length and number of elbows of the water flow pipeline 50, thereby reducing water flow resistance and improving the smoothness and stability of the water flow.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A chiller, characterized in that: include: frame; A water tank is provided on the frame, the water tank includes a water storage cavity, and the water tank is used to be connected to the cooling pool; a water pump assembly, disposed on the frame, and connected to the water tank; a plate and shell evaporator, disposed on the frame, having a heat exchange channel therein, the heat exchange channel being connected to the water pump assembly, the heat exchange channel being used to cool water flowing out of the water pump assembly, and the heat exchange channel being capable of being connected to the cooling pool to deliver cooling water to the cooling pool; A water flow pipeline connects the water tank, the heat exchange channel and the water pump assembly, and is also used to connect to the cooling pool.

2. The chiller according to claim 1, characterized in that: The plate and shell evaporator includes a refrigerant connecting pipeline, and the chiller also includes: A throttling component is provided on the refrigerant connecting pipeline.

3. The chiller according to claim 1, characterized in that: The water flow pipeline comprises: a pump outlet pipeline connected to the water outlet of the water tank and the water inlet of the water pump assembly; a circulation pipeline, the circulation pipeline being connected to the water pump assembly and the heat exchange channel, and the circulation pipeline being capable of communicating with the cooling pool; A cleaning pipeline is connected to the heat exchange channel and the water tank.

4. The chiller according to claim 3, characterized in that: The circulation pipeline comprises: a first pipeline, the first pipeline being connected to the water outlet of the water pump assembly, and the first pipeline being connected to the water inlet of the heat exchange channel; a second pipeline, the second pipeline being connected to the water outlet of the heat exchange channel, and the second pipeline being used to communicate with the cooling pool; a first valve body, disposed in the first pipeline; The second valve body is arranged in the second pipeline.

5. The chiller according to claim 4, characterized in that: The cleaning pipeline comprises: a third pipeline, the third pipeline being connected to the water outlet of the water pump assembly, and the third pipeline being connected to the water outlet of the heat exchange channel; a fourth pipeline connected between the water inlet of the heat exchange channel and the water inlet of the water tank; a third valve body, disposed in the third pipeline; The fourth valve body is arranged in the fourth pipeline.

6. The chiller according to claim 3, characterized in that: The water flow pipeline also includes: A fifth valve body is provided in the pump outlet pipeline.

7. The chiller according to claim 5, characterized in that: The water pump assembly comprises: a first water pump, wherein the water inlet of the first water pump is connected to the pump outlet pipeline, and the water outlet of the first water pump is connected to the first pipeline and the third pipeline; A second water pump, wherein the water inlet of the second water pump is connected to the pump outlet pipeline, and the water outlet of the second water pump is connected to the first pipeline and the third pipeline.

8. The chiller according to any one of claims 1 to 7, characterized in that: The chiller also includes: a filter element, the filter element being disposed in the water storage cavity; The water tank comprises a water inlet and a water outlet, the water inlet of the water tank is used to communicate with the cooling pool, and the filter element is located between the water inlet of the water tank and the water outlet of the water tank.

9. The chiller according to any one of claims 1 to 7, characterized in that: The water tank is located on one side of the frame, the water pump assembly is located on the other side of the frame, and the plate and shell evaporator is located between the water tank and the water pump assembly.

10. The chiller according to any one of claims 1 to 7, characterized in that: The volume of the chiller is V, where V>4m 3 , V<7m 3 .

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