A chilled water plant

Abstract

The application relates to the technical field of refrigerated water equipment, in particular to a refrigerated water equipment which comprises a filter core, a refrigeration part, a refrigerated water path, a water inlet pipeline, a heat exchange water path and a waste water discharge path; the filter core is provided with a water inlet end, a clean water outlet end and a waste water outlet end; the refrigeration part is provided with a refrigeration part and a heating part; the refrigerated water path is connected to the clean water outlet end at least, and the refrigerated water path is in heat conduction connection with the refrigeration part; the water inlet pipeline is connected to the water inlet end after passing through the heating part; the heat exchange water path is connected to the water inlet pipeline, and the heat exchange water path comprises a circulating water path and a heat exchange water cavity, and at least one of the circulating water path and the heat exchange water cavity is in heat conduction connection with the heating part; the waste water discharge path is connected to the waste water outlet end; and / or one end of a first backflow water path is connected to the waste water discharge path and / or the waste water outlet end, and the other end is connected to the heat exchange water path. Compared with the prior art, the filter core can be washed by the heat exchange water, the filter core can be cleaned at the same time, the filter core is heated to improve the working efficiency of the filter core.

Description

Technical Field

[0001] This application relates to the field of chilled water equipment technology, specifically to a chilled water equipment. Background Technology

[0002] Chilled water equipment can produce water at temperatures below room temperature, meeting users' needs for low-temperature water. Therefore, chilled water equipment is becoming increasingly common in both commercial and residential settings.

[0003] In chilled water systems, the refrigeration components generate heat while cooling the water, which affects the cooling efficiency. To ensure efficiency, a water-cooled heat dissipation structure is typically installed at the heat-generating end of the refrigeration components. This structure uses hot water exchanged to dissipate heat from the refrigeration components, improving their efficiency and ensuring the system effectively provides chilled water to users. However, the heat carried away by the hot water exchanged, along with the increased temperature of the exchanged water, is often not effectively utilized but instead discharged or lost, resulting in significant waste and greatly reducing the material and energy utilization rates of the chilled water system. Utility Model Content

[0004] In view of this, this application provides a chiller that can effectively utilize the hot water exchanged to cool the heating part of the refrigeration component, thereby improving the material utilization rate of the chilled water equipment.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a chilled water device, including a filter element, a cooling component, a chilled water circuit, an inlet pipe, a hot water exchange circuit, and a wastewater discharge circuit. The filter element is provided with an inlet end, a clean water outlet end, and a wastewater outlet end; the cooling component is provided with a cooling section and a heating section; the chilled water circuit is at least connected to the clean water outlet end, and the chilled water circuit is thermally connected to the cooling section; the inlet pipe is connected to the inlet end after passing through the heating section; the hot water exchange circuit is connected to the inlet pipe, and the hot water exchange circuit includes a circulating water circuit and a hot water exchange chamber, and at least one of the circulating water circuit and the hot water exchange chamber is thermally connected to the heating section; the wastewater discharge circuit is connected to the wastewater outlet end; and / or, a first return water circuit, one end of the first return water circuit is connected to the wastewater discharge circuit and / or the wastewater outlet end, and the other end is connected to the hot water exchange circuit.

[0006] In one specific embodiment, the circulating water circuit includes a high-temperature end and a low-temperature end. Water flows from the low-temperature end to the high-temperature end within the circulating water circuit. The high-temperature end is connected to the top of the hot water exchange chamber, and the low-temperature end is connected to the bottom of the hot water exchange chamber. The inlet pipe includes a low-temperature water circuit and a high-temperature water circuit. The low-temperature water circuit is used to input water into the bottom of the hot water exchange chamber and / or the low-temperature end. One end of the high-temperature water circuit is connected to the top of the hot water exchange chamber and / or the high-temperature end, and the other end is connected to the inlet end.

[0007] In one specific embodiment, the chilled water equipment is further provided with a second return water path, and the chilled water equipment also includes a second return valve, which is connected to the second return water path. One end of the second return water path is connected to the purified water outlet, and the other end is connected to the low-temperature water path and / or the hot water exchange chamber.

[0008] In one specific embodiment, the end of the low-temperature water path away from the hot water exchange path is used to connect to an external water source, and the low-temperature water path is used to input water from the external water source to the bottom of the hot water exchange chamber and / or the low-temperature end.

[0009] In one specific embodiment, the chilled water equipment is further provided with a sterilization water inlet, and the chilled water equipment also includes a sterilization valve connected to the sterilization water inlet. One end of the sterilization water inlet is connected to at least one of the high-temperature water circuit, the high-temperature end, and the top of the hot water exchange chamber, and the other end is connected to the chilled water circuit.

[0010] In one specific embodiment, the cooling water circuit includes a cold water chamber, a cooling water inlet circuit, and a cooling water outlet circuit. The cooling water inlet circuit connects the purified water outlet and the cold water chamber. The cooling water outlet circuit connects the cold water chamber and the cold water outlet channel. The cold water chamber is thermally connected to the cooling unit. The sterilization water inlet circuit is connected to the cooling water inlet circuit.

[0011] In one specific embodiment, the chilled water equipment further includes a water pump and a chilled water outlet valve; the chilled water chamber includes a chilling chamber and a chilled storage chamber, the chilling chamber is thermally connected to the chilling unit, the chilled water inlet is connected to the chilling chamber, the chilled water outlet is connected to the chilled storage chamber, the water pump is connected to the chilling chamber and the chilled storage chamber, and the chilled water outlet valve is connected to the chilled water outlet.

[0012] In one specific embodiment, the chilled water equipment is further provided with a sterilization water outlet, one end of which is connected to the chilled water outlet upstream of the chilled water outlet valve, and the other end of which is connected to the wastewater discharge outlet.

[0013] In one specific embodiment, the chilled water equipment is further provided with a cooling water path, the chilled water equipment includes a cooling valve, the cooling valve is connected in the cooling water path, and the cooling water path connects the chilled water path and the hot water exchange path.

[0014] In one specific embodiment, the chilled water equipment further includes a first temperature detection element, a controller, and a high-temperature drain valve. The chilled water equipment is also provided with a high-temperature drain path, one end of which is connected to the hot water exchange path and the other end of which is connected to the wastewater discharge path. The first temperature detection element is disposed inside the filter element, and the controller is connected to the first temperature detection element and the high-temperature drain valve.

[0015] The beneficial effects of this application include: by setting up an inlet pipe, the hot water flowing through the heating element can be introduced into the inlet end of the filter element, thereby using the hot water to rinse the filter element. After the water flows through the heating element for heat exchange, it can also be used to rinse the filter element. The water used to rinse the filter element can be discharged through the wastewater drain and / or returned to the hot water drain circuit through the first return water circuit. This effectively reuses the hot water generated during the heat exchange process, maintaining the cooling efficiency of the refrigeration components through heat exchange while avoiding waste of hot water and improving the material utilization rate of the refrigeration water equipment.

[0016] Furthermore, the temperature of the hot water increases after flowing through the heating element. The higher temperature of the hot water can conduct heat to the filter element when rinsing it, thus raising the temperature of the filter element. Since the viscosity of water decreases as the temperature rises, the molecular motion becomes more intense, and the water passes through the filter element structure faster. Therefore, for the filter element, appropriately raising the temperature can increase the speed at which the filter element filters water. The heat carried away by the hot water from the heating element can be used to increase the speed efficiency of the filter element, thereby improving the energy utilization rate of the chilled water equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the water circuit structure of the first embodiment of the chilled water equipment provided in this application;

[0019] Figure 2 This is a schematic diagram of the water circuit structure of the second embodiment of the chilled water equipment provided in this application;

[0020] Figure 3This is a schematic diagram of the water circuit structure of the third embodiment of the chilled water equipment provided in this application;

[0021] Figure 4 This is a schematic diagram of the water circuit structure of the fourth embodiment of the chilled water equipment provided in this application;

[0022] Figure 5 This is a schematic diagram of the assembly structure of the cold water tank, heat exchanger, and hot water tank provided in this application;

[0023] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure shown in section AA;

[0024] Figure 7 yes Figure 5 A schematic diagram of the cross-sectional structure shown in section BB.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Refrigeration water equipment; 2. Filter element; 21. Water inlet; 22. Clean water outlet; 23. Clean water outlet path; 231. Clean water outlet valve; 23. Wastewater outlet; 24. Clean water outlet path; 241. Clean water outlet valve; 3. Refrigeration components; 31. Refrigeration section; 32. Heating section; 4. Refrigeration water path; 41. Refrigeration water inlet path; 411. Refrigeration water inlet valve; 42. Cold water chamber; 42a. Cold water tank; 421. Refrigeration chamber; 422. Water pump; 422a. Water passage; 423. Cold storage chamber; 43. Refrigeration water outlet path; 431. Cold water outlet valve; 432. Cold water outlet pump; 44. Exhaust channel; 5. Water inlet pipe; 51. High temperature water path; 52. Low temperature water path; Water circuit; 53. Inlet pump; 54. Inlet valve; 55. Filter inlet valve; 6. Hot water exchange circuit; 61. Circulating water circuit; 611. High temperature end; 612. Low temperature end; 613. Circulating pump; 62. Hot water exchange chamber; 62a. Hot water exchange tank; 71. Wastewater discharge circuit; 72. Second return water circuit; 721. Second return valve; 73. First return water circuit; 731. First return valve; 741. Sterilization inlet water circuit; 742. Sterilization valve; 743. Sterilization outlet water circuit; 75. Cooling water circuit; 751. Cooling valve; 81. First temperature detection element; 82. Controller; 83. High temperature drainage circuit; 831. High temperature drainage valve; 91. Cold water outlet channel; 92. Heat exchanger. Detailed Implementation

[0027] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] Chilled water equipment can produce water at temperatures below room temperature, meeting users' needs for low-temperature water. Therefore, chilled water equipment is becoming increasingly common in both commercial and residential settings.

[0033] In chilled water systems, the refrigeration components generate heat while cooling the water, which affects the cooling efficiency. To ensure efficiency, a water-cooled heat dissipation structure is typically installed at the heat-generating end of the refrigeration components. This structure uses hot water exchanged to dissipate heat from the refrigeration components, improving their efficiency and ensuring the system effectively provides chilled water to users. However, the heat carried away by the hot water exchanged, along with the increased temperature of the exchanged water, is often not effectively utilized but instead discharged or lost, resulting in significant waste and greatly reducing the material and energy utilization rates of the chilled water system.

[0034] In order to improve or solve the above technical problems, the inventors of this application, after long-term research, have proposed at least the following embodiments.

[0035] See Figure 1 , Figure 1 This is a schematic diagram of the water circuit structure of the first embodiment of the chilled water device provided in this application. The specific embodiments of this application provide a chilled water device 1 capable of preparing chilled water. The chilled water device 1 may include a filter element 2, a cooling component 3, a chilled water circuit 4, an inlet water pipe 5, a hot water exchange circuit 6, and a wastewater discharge circuit 71.

[0036] The filter element 2 has a water inlet 21, a clean water outlet 22, and a wastewater outlet 23. The refrigeration unit 3 has a refrigeration section 31 and a heating section 32. The refrigeration water circuit 4 is at least connected to the clean water outlet 22, and the refrigeration water circuit 4 is thermally connected to the refrigeration section 31. The water inlet pipe 5 is connected to the water inlet 21 after passing through the heating section 32. The hot water exchange circuit 6 is connected to the water inlet pipe 5. The hot water exchange circuit 6 may specifically include a circulating water circuit 61 and a hot water exchange chamber 62, and at least one of the circulating water circuit 61 and the hot water exchange chamber 62 is thermally connected to the heating section 32. The wastewater discharge circuit 71 is connected to the wastewater outlet 23.

[0037] See Figure 1 In a specific embodiment of this application, the chilled water equipment 1 may also be provided with a first return water path 73, one end of the first return water path 73 is connected to the wastewater discharge path 71 and / or the wastewater outlet 23, and the other end of the first return water path 73 is connected to the hot water exchange path 6.

[0038] Optionally, the chilled water equipment 1 may further include a first return valve 731, which is connected to the first return water path 73 and is used to control the opening and closing of the first return water path 73. When the first return valve 731 is open, the water entering the first return water path 73 from the wastewater discharge path 71 and / or wastewater outlet 23 can enter the heat exchange path 6.

[0039] In the structure provided in this specific embodiment, the hot water exchanged heat with the filter element 2 during the rinsing process. The temperature of the filter element 2 rises while the temperature of the hot water exchanged decreases. Therefore, the water temperature output from the wastewater outlet 23 is lower, while the water temperature input from the hot water exchange circuit 6 to the inlet 21 is higher.

[0040] After a period of circulating heat exchange, the temperature of the hot water in the hot water exchange circuit 6 may become too high. This high temperature not only reduces the heat exchange efficiency but also hinders the maintenance of the filter element 2's lifespan and filtration efficiency. Therefore, the first return valve 731 can be opened to allow the cooler water in the wastewater circuit 71 to be introduced into the hot water exchange circuit 6 via the first return water circuit 73. This allows the water to mix with the hot water to regulate its temperature, ensuring the heat exchange efficiency of the hot water exchange circuit 6 and the normal operation of the filter element 2.

[0041] Specifically, see Figure 1 One end of the first return water path 73, which is connected to the hot water exchange path 6, can extend into the bottom of the hot water exchange chamber 62. It can directly input the water with a lower temperature into the bottom of the hot water exchange chamber 62, so that it can enter the low temperature end 612 connected to the bottom of the hot water exchange chamber 62 for heat dissipation of the heating part 32.

[0042] In the structure provided in this specific embodiment, by setting up the water inlet pipe 5, the hot water flowing through the heating element 32 can be input into the water inlet end 21 of the filter element 2 through the water inlet pipe 5, thereby using the hot water to rinse the filter element 2. After the water flows through the heating element 32 through the hot water exchange path 6 for heat exchange, it can also be used to rinse the filter element 2. The water after rinsing the filter element 2 can be discharged through the wastewater discharge path 71 and / or transported back to the hot water exchange path 6 through the first return water path 73. This can effectively reuse the hot water generated during the heat exchange process, and while maintaining the cooling efficiency of the refrigeration unit 3 to the refrigeration water path 4 through heat exchange, it can avoid the waste of hot water and improve the material utilization rate of the refrigeration water equipment 1.

[0043] Specifically, the cooling element 3 can be a semiconductor cooling element, which can include an N-type element and a P-type element connected in series. The N-type element and the P-type element respectively include N-type semiconductor material and P-type semiconductor material (e.g., bismuth telluride). When a direct current is applied to the semiconductor cooling element, i.e., when the cooling element 3 is working, the N-type semiconductor material and a piece of P-type semiconductor material of the semiconductor cooling element are connected to form an electric couple, thereby generating energy transfer. The current flows from the N-type element to the junction of the P-type element, absorbing heat and becoming the cooling section 31. The current flows from the P-type element to the junction of the N-type element, releasing heat and becoming the heating section 32.

[0044] Furthermore, the temperature of the hot water increases after flowing through the heating element 32. The higher temperature of the hot water can conduct heat to the filter element 2 when rinsing it, thus raising the temperature of the filter element 2. Since the viscosity of water decreases as the temperature increases, the molecular motion becomes more intense, and the water passes through the structure of the filter element 2 faster. Therefore, for the filter element 2, appropriately increasing the temperature can increase the speed at which the filter element 2 filters water. The heat carried away by the hot water from the heating element 32 can be used to increase the filtration speed of the filter element 2, thereby improving the energy utilization rate of the cooling water equipment 1.

[0045] Specifically, filter element 2 may include a reverse osmosis filter element, an ultrafiltration filter element, and an ion exchange resin filter element. As temperature increases, water viscosity decreases, molecular diffusion accelerates, the permeability of the reverse osmosis membrane in the reverse osmosis filter element increases, and the rate at which water passes through the ultrafiltration membrane in the ultrafiltration filter element increases, thus increasing the rate at which filtered water is output from both the reverse osmosis and ultrafiltration filter elements. For the ion exchange resin filter element, increased temperature enhances the thermal motion of molecules, promoting the ion exchange process of the ion exchange resin, thereby increasing the filtration speed of the ion exchange resin filter element.

[0046] Specifically, the chilled water equipment 1 may also be equipped with a purified water outlet 24 and a purified water outlet valve 241. The purified water outlet valve 241 is connected to the purified water outlet 24. The water output from the purified water outlet 22 can not only enter the chilled water circuit 4 to be prepared into chilled water, but also enter the purified water outlet 24. When the purified water outlet valve 241 is opened, it is used as purified water output to supply users.

[0047] like Figure 1 As shown, in a specific embodiment of this application, the circulating water path 61 may specifically include a high-temperature end 611 and a low-temperature end 612, with water flowing from the low-temperature end 612 to the high-temperature end 611 within the circulating water path 61. The high-temperature end 611 is connected to the top of the hot water exchange chamber 62, and the low-temperature end 612 is connected to the bottom of the hot water exchange chamber 62. The inlet pipe 5 includes a low-temperature water path 52 and a high-temperature water path 51. The low-temperature water path 52 is used to input water into the bottom of the hot water exchange chamber 62 and / or the low-temperature end 612, and one end of the high-temperature water path 51 is connected to the top of the hot water exchange chamber 62 and / or the high-temperature end 611, while the other end is connected to the inlet end 21.

[0048] In the hot water exchange circuit 6, water enters the circulating water circuit 61 from the low temperature end 612 and exchanges heat with the heating element 32 as it flows along the circulating water circuit 61 towards the high temperature end 611. Therefore, the water temperature at the low temperature end 612 is lower, and the water temperature at the high temperature end 611 is higher. The water with higher temperature enters the top of the hot water exchange chamber 62 from the high temperature end 611. As the water moves from the top to the bottom of the hot water exchange chamber 62, its temperature decreases, causing the water with lower temperature to return from the low temperature end 612 to the circulating water circuit 61.

[0049] In the structure provided in this specific embodiment, the water entering the low-temperature water channel 52 from the low-temperature end 612 or the bottom of the hot water exchange chamber 62, after exchanging heat with the heating element 32, can enter the high-temperature water channel 51 from the high-temperature end 611 or the top of the hot water exchange chamber 62. This allows the hot water, which has exchanged heat with the heating element 32 and has a higher temperature, to be input into the filter element 2, thereby rinsing the filter element 2 and effectively increasing the temperature of the filter element 2 to improve the filtration speed of the filter element 2.

[0050] Specifically, a circulation pump 613 can be connected to the circulating water circuit 61. The circulation pump 613 is used to promote the circulation of water between the circulating water circuit 61 and the hot water exchange chamber 62.

[0051] See Figure 1 In a specific embodiment of this application, the chilled water device 1 may also be provided with a second return water path 72, and the chilled water device 1 further includes a second return valve 721. The second return valve 721 is connected in the second return water path 72, one end of the second return water path 72 is connected to the purified water outlet 22, and the other end of the second return water path 72 is connected to the low temperature water path 52 and / or the hot water exchange chamber 62.

[0052] Regardless of the type of filter element 2, there is a suitable temperature range. When the temperature of filter element 2 is below this temperature range, the filtration speed of filter element 2 is low, which affects the cooling water efficiency of cooling water equipment 1; when the temperature of filter element 2 is above this temperature range, it may affect the service life of filter element 2, and may also lead to a decrease in the filtration quality of filter element 2, resulting in unstable water quality of the cold water produced by cooling water equipment 1.

[0053] For example, the aging process of the reverse osmosis membrane in a reverse osmosis filter cartridge accelerates significantly when the temperature reaches above 40°C, while at lower temperatures, such as below 5°C, the filtration rate of the reverse osmosis membrane decreases, resulting in a significant drop in the water production of filter cartridge 2. Similarly, with ion exchange resin filter cartridges, when the temperature of filter cartridge 2 exceeds 40°C, oxidation or structural decomposition of the ion exchange resin may occur, causing filter cartridge 2 to malfunction.

[0054] After a period of circulating heat exchange, the temperature of the hot water in the hot water exchange circuit 6 may become too high. The excessively high temperature not only reduces the heat exchange efficiency, but also hinders the maintenance of the lifespan and filtration efficiency of the filter element 2 after it is fed into the filter element 2. Therefore, the low-temperature water output from the purified water outlet 22 can be fed into the hot water exchange circuit 6 through the second return water circuit 72, thereby regulating the temperature of the hot water and ensuring the heat exchange efficiency of the hot water exchange circuit 6 and the normal operation of the filter element 2.

[0055] In one specific embodiment of this application, the end of the low-temperature water path 52 furthest from the hot water exchange path 6 is connected to an external water source. The low-temperature water path 52 is used to input water from the external water source into the bottom and / or low-temperature end 612 of the hot water exchange chamber 62. This allows low-temperature water from the external water source to be input into the hot water exchange path 6, mixing with the hot water in the hot water exchange path 6, thereby reducing the temperature of the hot water and ensuring the heat exchange efficiency of the hot water exchange path 6 and the normal operation of the filter element 2.

[0056] The external water source can be a tap water pipe connected to the chilled water equipment 1, or a water treatment equipment such as a water purifier, mineral water machine, or chiller. The low-temperature water circuit 52 can input the water output from the water treatment equipment and / or the tap water pipe into the heat exchange circuit 6.

[0057] Specifically, see Figure 1 The chilled water equipment 1 may also be equipped with an inlet pump 53, an inlet valve 54, and a filter element inlet valve 55. The inlet pump 53 and the inlet valve 54 are connected to the low-temperature water circuit 52. The inlet pump 53 drives the water to flow from the low-temperature water circuit 52 to the high-temperature water circuit 51, and the inlet valve 54 controls the on / off state of the low-temperature water circuit 52. The filter element inlet valve 55 is connected to the high-temperature water circuit 51 and controls the on / off state of the high-temperature water circuit 51.

[0058] like Figure 1 and Figure 3 As shown, Figure 3 This is a schematic diagram of the water circuit structure of the third embodiment of the chilled water equipment provided in this application. In a specific embodiment of this application, the chilled water equipment 1 is further provided with a sterilization water inlet 741, and the chilled water equipment 1 also includes a sterilization valve 742, which is connected to the sterilization water inlet 741. One end of the sterilization water inlet 741 is connected to at least one of the high-temperature water circuit 51, the high-temperature end 611, and the top of the hot water exchange chamber 62, and the other end of the sterilization water inlet 741 is connected to the chilled water circuit 4.

[0059] Because it is thermally connected to the cooling section 31 of the cooling component 3, the cooling water circuit 4 is usually kept at a low temperature, providing a suitable environment for microbial growth. Therefore, after a period of use, microbial growth may occur in the cooling water circuit 4, which greatly affects the quality of the cold water output from the cooling water circuit 4.

[0060] In the structure provided in this specific embodiment, by setting a sterilization water inlet 741, high-temperature hot water from at least one of the high-temperature water path 51, the high-temperature end 611, and the top of the hot water exchange chamber 62 can be input into the cooling water path 4 when the sterilization valve 742 is opened. This allows the high-temperature hot water to be used to sterilize the cooling water path 4, thereby effectively killing microorganisms in the cooling water path 4, maintaining the water quality in the cooling water path 4, and reducing the probability of excessive microbial content in the cold water output by the cooling water equipment 1.

[0061] Specifically, a cooling water inlet valve 411 can be connected to the cooling water inlet circuit 41, and a sterilization water inlet circuit 741 is connected to the cooling water inlet circuit 41 downstream of the cooling water inlet valve 411. Since the cooling water inlet circuit 41 connects to the purified water outlet 22, when high-temperature hot water is used for sterilization, it may flow through the cooling water inlet circuit 41 to the purified water outlet 22, causing contamination of the filter element 2. When using high-temperature hot water for sterilization, the cooling water inlet valve 411 can be closed to prevent backflow of water from the cooling water inlet circuit 41 into the purified water outlet 22.

[0062] See Figure 1 and Figure 3 In one specific embodiment of this application, the cooling water circuit 4 includes a cold water chamber 42, a cooling water inlet circuit 41, and a cooling water outlet circuit 43. The cooling water inlet circuit 41 connects the purified water outlet 22 and the cold water chamber 42. The cooling water outlet circuit 43 connects the cold water chamber 42 and the cold water outlet channel 91. The cold water chamber 42 is thermally connected to the cooling unit 31. The sterilization water inlet circuit 741 connects to the cooling water inlet circuit 41.

[0063] In the structure provided in this specific embodiment, the sterilization water inlet 741 is specifically connected to the cooling water inlet 41. High-temperature hot water is input from the cooling water inlet 41 and then flows sequentially through the cooling water inlet 41, the cold water chamber 42, and the cooling water outlet 43 to completely sterilize the entire cooling water circuit 4. The sterilized water produced after sterilization can be discharged through the cold water outlet channel 91 to avoid the sterilized water remaining in the cooling water circuit 4 and causing pollution to the water body input later.

[0064] Specifically, see Figure 5 , Figure 6 , Figure 7 , Figure 5 This is a schematic diagram of the assembly structure of the cold water tank, heat exchanger, and hot water tank provided in this application. Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure shown in section AA. Figure 7 yes Figure 5 The cross-sectional view shown in section BB is a schematic diagram. The cold water cavity 42 can be formed inside the cold water tank 42a, the circulating water circuit 61 that exchanges heat with the heating element 32 can be set inside the heat exchanger 92, and the hot water cavity 62 can be formed inside the hot water tank 62a.

[0065] The refrigeration unit 3 is connected to the cold water tank 42a and the heat exchanger 92, with the refrigeration unit 31 facing into the cold water cavity 42, and the heating unit 32 thermally connected to the heat exchanger 92. Part of the circulating water path 61 is located inside the heat exchanger 92 for thermal connection with the heating unit 32, and the remaining circulating water path 61 is formed in a pipeline, with one end of the pipeline connected to the heat exchanger 92 and the other end connected to the hot water tank 62a, so that the circulating water path 61 in the pipeline can connect to the hot water cavity 62 inside the hot water tank 62a.

[0066] Because water with higher temperatures has lower density, the water in the hot water exchange chamber 62 exhibits a temperature distribution trend of gradually increasing from bottom to top. For example... Figure 7 As shown, in the vertical direction, a pipe with a high-temperature end 611 is connected to the upper end of the hot water exchange tank 62a, so that the high-temperature hot water output from the high-temperature end 611 can enter the upper layer of the hot water exchange cavity 62. A pipe with a low-temperature end 612 is connected to the lower end of the hot water exchange tank 62a, so that the circulating water circuit 61 can obtain low-temperature hot water from the lower layer of the hot water exchange cavity 62 through the low-temperature end 612, which is consistent with the temperature distribution of the water in the hot water exchange cavity 62.

[0067] The chilled water equipment 1 may also be provided with an exhaust channel 44, one end of which is connected to the outside and the other end is connected to the chilled water chamber 42, so as to discharge the gas that enters the chilled water chamber 42 with the water flow.

[0068] like Figure 1 , Figure 3 , Figure 4 As shown, Figure 4 This is a schematic diagram of the water circuit structure of the fourth embodiment of the cooling water equipment provided in this application. Figure 3 and Figure 4 Two possible cold water cavity 42 structures are shown, in Figure 3 The intermediate cooling chamber 421 is located above the cold storage chamber 423. Figure 4 The intermediate cooling chamber 421 and the cold storage chamber 423 are arranged side by side. It should be noted that the actual structure of the cold water storage chamber 42 is not based on this arrangement. Figure 3 , Figure 4 The structure shown is limited.

[0069] In a specific embodiment of this application, the chilled water device 1 may further include a water pump 422 and a chilled water outlet valve 431. The chilled water chamber 42 includes a chilled chamber 421 and a chilled water storage chamber 423. The chilled chamber 421 is thermally connected to the chilled section 31. The chilled water inlet passage 41 is connected to the chilled chamber 421, and the chilled water outlet passage 43 is connected to the chilled water storage chamber 423. The water pump 422 is connected to the chilled chamber 421 and the chilled water storage chamber 423, and the chilled water outlet valve 431 is connected to the chilled water outlet passage 43.

[0070] In the structure provided in this specific embodiment, when the water pump 422 is closed, the high-temperature hot water is stored in the cooling chamber 421, which enables immersion sterilization of the cooling chamber 421 and the cooling water inlet passage 41. When the water pump 422 is open and the cold water outlet valve 431 is closed, the high-temperature hot water can enter the cold storage chamber 423 through the water pump 422 and be stored in the cold storage chamber 423, which enables immersion sterilization of the cold storage chamber 423 and the cooling water outlet passage 43 upstream of the cold water outlet valve 431.

[0071] See Figure 3 , Figure 4 Specifically, a water passage 422a can be provided to connect the refrigeration chamber 421 and the cold storage chamber 423, and a water pump 422 is connected to the water passage 422a. When the water pump 422 is started, the water in the refrigeration chamber 421 can enter the cold storage chamber 423 through the water passage 422a; when the water pump 422 is turned off, the water passage 422a is blocked by the water pump 422, and the water in the refrigeration chamber 421 cannot flow to the cold storage chamber 423 through the water passage 422a.

[0072] The chilled water equipment 1 may also be equipped with a chilled water outlet pump 432, which is connected to the chilled water outlet circuit 43 and is used to pump the water in the chilled water circuit 4 to the chilled water outlet channel 91.

[0073] like Figure 2 , Figure 3 As shown, Figure 2 This is a schematic diagram of the water circuit structure of the second embodiment of the chilled water equipment provided in this application. In a specific embodiment of this application, the chilled water equipment 1 is further provided with a sterilization water outlet 743. One end of the sterilization water outlet 743 is connected to the chilled water outlet 43 upstream of the cold water outlet valve 431, and the other end of the sterilization water outlet 743 is connected to the wastewater discharge channel 71. By setting the sterilization water outlet 743 connected to the chilled water outlet 43 upstream of the cold water outlet valve 431, sterilization water can be discharged through the sterilization water outlet 743, thus avoiding contamination of the cold water outlet channel 91 by the sterilization water.

[0074] In addition to using hot water exchange to sterilize the cooling water circuit 4, an ultraviolet lamp can be installed in the cooling water chamber 42 to use ultraviolet light for sterilization. Even without a sterilization water circuit, the water containing microorganisms and / or microorganisms in the cooling water circuit 4 can be discharged into the wastewater circuit 71 through the sterilization outlet 743.

[0075] See Figure 4 In a specific embodiment of this application, the chilled water equipment 1 may also be provided with a cooling water path 75. The chilled water equipment 1 includes a cooling valve 751, which is connected to the cooling water path 75. The cooling water path 75 connects the chilled water path 4 and the hot water exchange path 6.

[0076] Regardless of the type of filter element 2, there is a suitable temperature range. When the temperature of filter element 2 is below this temperature range, the filtration speed of filter element 2 is low, which affects the cooling water efficiency of cooling water equipment 1; when the temperature of filter element 2 is above this temperature range, it may affect the service life of filter element 2, and may also lead to a decrease in the filtration quality of filter element 2, resulting in unstable water quality of the cold water produced by cooling water equipment 1.

[0077] For example, the aging process of the reverse osmosis membrane in reverse osmosis filter cartridge 2 accelerates significantly when the temperature reaches above 40℃, while at lower temperatures, such as below 5℃, the filtration rate of the reverse osmosis membrane decreases, resulting in a significant drop in the water production of filter cartridge 2. Similarly, for ion exchange resin filter cartridge 2, when the temperature of filter cartridge 2 exceeds 40℃, oxidation or structural decomposition of the ion exchange resin may occur, causing filter cartridge 2 to malfunction.

[0078] After a period of circulating heat exchange, the temperature of the hot water in the hot water exchange circuit 6 may become too high. This high temperature not only reduces the heat exchange efficiency but also negatively impacts the lifespan and filtration efficiency of the filter element 2. Therefore, the cooling valve 751 can be opened to allow the cold water in the cooling water circuit 4 to be introduced into the hot water exchange circuit 6 via the cooling water circuit 75. This allows the cold water to mix with the hot water to regulate its temperature, ensuring the heat exchange efficiency of the hot water exchange circuit 6 and the normal operation of the filter element 2.

[0079] See Figure 2 In a specific embodiment of this application, the chilled water equipment 1 may further include a first temperature detection element 81, a controller 82, and a high-temperature drain valve 831. The chilled water equipment 1 also has a high-temperature drain path 83. One end of the high-temperature drain path 83 is connected to the hot water exchange path 6, and the other end is connected to the wastewater discharge path 71. The first temperature detection element 81 is disposed inside the filter element 2, and the controller 82 is connected to the first temperature detection element 81 and the high-temperature drain valve 831.

[0080] In the structure provided in this specific embodiment, the temperature of the filter element 2 is monitored by the first temperature detection element 81, and the controller 82 is used to connect the first temperature detection element 81 and the high temperature drain valve 831 in the high temperature drain path 83. Thus, when the first temperature detection element 81 detects that the temperature of the filter element 2 is higher than the appropriate temperature range, the controller 82 controls the high temperature drain valve 831 to open, thereby draining the high temperature hot water in the hot water exchange path 6 into the wastewater discharge path 71. This prevents the high temperature hot water from continuing to enter the filter element 2 and causing the temperature of the filter element 2 to become too high, effectively maintaining the working efficiency and service life of the filter element 2 and improving the stability of the chilled water equipment 1.

[0081] Specifically, the controller 82 can be a microprocessor, which stores a control program. The first temperature sensor 81 can send the measured temperature to the microprocessor in the form of a digital signal or an electrical signal. The control program in the microprocessor responds to the digital signal or electrical signal sent by the first temperature sensor 81 and sends a corresponding control message to the high-temperature drain valve 831 in the form of a digital signal or an electrical signal, thereby controlling the opening or closing of the high-temperature drain valve 831.

[0082] Optionally, such as Figure 1 , Figure 3 As shown, the controller 82 can also be connected to the filter element inlet valve 55 and the first temperature detection element 81, so that when the temperature of the filter element 2 is too high, the high-temperature hot water can be prevented from continuing to enter the filter element 2 by closing the filter element inlet valve 55, thereby preventing the temperature of the filter element 2 from continuing to rise, effectively maintaining the working efficiency and service life of the filter element 2, and improving the stability of the chilled water equipment 1.

[0083] In this application, the terms "embodiment" and "implementation" mean that a specific feature, part, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various places in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, parts, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A cooling water device, characterized in that, include: The filter element (2) is provided with a water inlet (21), a clean water outlet (22), and a wastewater outlet (23); The refrigeration component (3) is provided with a refrigeration section (31) and a heating section (32); The cooling water circuit (4) is at least connected to the purified water outlet (22), and the cooling water circuit (4) is thermally connected to the cooling unit (31); Water inlet pipe (5), which is connected to the water inlet end (21) after passing through the heating part (32); The hot water exchange circuit (6) is connected to the inlet pipe (5). The hot water exchange circuit (6) includes a circulating water circuit (61) and a hot water exchange chamber (62). At least one of the circulating water circuit (61) and the hot water exchange chamber (62) is thermally connected to the heating element (32). Wastewater discharge path (71), which is connected to the wastewater outlet (23); and / or, first return path (73), one end of which is connected to the wastewater discharge path (71) and / or the wastewater outlet (23), and the other end is connected to the hot water exchange path (6).

2. The chilled water equipment according to claim 1, characterized in that, The circulating water path (61) includes a high-temperature end (611) and a low-temperature end (612). Water flows from the low-temperature end (612) to the high-temperature end (611) within the circulating water path (61). The high-temperature end (611) is connected to the top of the hot water exchange chamber (62), and the low-temperature end (612) is connected to the bottom of the hot water exchange chamber (62). The water inlet pipe (5) includes a low-temperature water path (52) and a high-temperature water path (51). The low-temperature water path (52) is used to input water into the bottom of the hot water exchange chamber (62) and / or the low-temperature end (612). One end of the high-temperature water path (51) is connected to the top of the hot water exchange chamber (62) and / or the high-temperature end (611), and the other end is connected to the water inlet end (21).

3. The chilled water equipment according to claim 2, characterized in that, The chilled water equipment (1) is also provided with a second return water path (72). The chilled water equipment (1) also includes a second return valve (721). The second return valve (721) is connected to the second return water path (72). One end of the second return water path (72) is connected to the purified water outlet (22), and the other end is connected to the low temperature water path (52) and / or the hot water exchange chamber (62).

4. The chilled water equipment according to claim 2, characterized in that, The end of the low-temperature water path (52) away from the hot water exchange path (6) is used to connect to an external water source. The low-temperature water path (52) is used to input water from the external water source to the bottom of the hot water exchange cavity (62) and / or the low-temperature end (612).

5. The chilled water equipment according to claim 2, characterized in that, The chilled water equipment (1) is also provided with a sterilization water inlet (741). The chilled water equipment (1) also includes a sterilization valve (742). The sterilization valve (742) is connected to the sterilization water inlet (741). One end of the sterilization water inlet (741) is connected to at least one of the high-temperature water circuit (51), the high-temperature end (611), and the top of the hot water exchange chamber (62). The other end is connected to the chilled water circuit (4).

6. The chilled water equipment according to claim 5, characterized in that, The cooling water circuit (4) includes a cold water chamber (42), a cooling water inlet circuit (41), and a cooling water outlet circuit (43). The cooling water inlet circuit (41) connects the purified water outlet (22) and the cold water chamber (42). The cooling water outlet circuit (43) connects the cold water chamber (42) and the cold water outlet channel (91). The cold water chamber (42) is thermally connected to the cooling unit (31). The sterilization water inlet (741) is connected to the cooling water inlet (41).

7. The chilled water equipment according to claim 6, characterized in that, The chilled water equipment (1) also includes a water pump (422) and a chilled water outlet valve (431); The cold water chamber (42) includes a refrigeration chamber (421) and a cold storage chamber (423). The refrigeration chamber (421) is thermally connected to the refrigeration unit (31). The refrigeration water inlet (41) is connected to the refrigeration chamber (421). The refrigeration water outlet (43) is connected to the cold storage chamber (423). The water pump (422) is connected to the refrigeration chamber (421) and the cold storage chamber (423). The cold water outlet valve (431) is connected to the refrigeration water outlet (43).

8. The chilled water equipment according to claim 7, characterized in that, The chilled water equipment (1) is also provided with a sterilization water outlet (743), one end of which is connected to the chilled water outlet (43) upstream of the chilled water outlet valve (431), and the other end of which is connected to the wastewater discharge channel (71).

9. The chilled water equipment according to any one of claims 1 to 8, characterized in that, The chilled water equipment (1) is also provided with a cooling water path (75). The chilled water equipment (1) includes a cooling valve (751), which is connected to the cooling water path (75). The cooling water path (75) connects the chilled water path (4) and the hot water exchange path (6).

10. The chilled water equipment according to any one of claims 1 to 8, characterized in that, The chilled water equipment (1) also includes a first temperature detection element (81), a controller (82) and a high temperature drain valve (831). The chilled water equipment (1) is also provided with a high temperature drain path (83). One end of the high temperature drain path (83) is connected to the hot water exchange path (6), and the other end is connected to the wastewater discharge path (71). The first temperature detection element (81) is disposed inside the filter element (2), and the controller (82) is connected to the first temperature detection element (81) and the high temperature drain valve (831).

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