阅读说明：本技术 水冷冰箱循环系统 (Water-cooling refrigerator circulating system ) 是由 文翔 王铭坤 李江伟 刘洋 易永盛 孟庆鹏 冯云凌 傅彦达 张亮 于 2020-04-30 设计创作，主要内容包括：本发明涉及一种水冷冰箱循环系统,包括水冷冰箱、回水管和冷水进水管,所述回水管一端与所述水冷冰箱的冷凝器的水流侧管路的出口连通,所述回水管另一端与所述水流侧管路的入口连通,所述回水管路经热水供应区,所述回水管上路经所述热水供应区的部分设有热水开关阀,所述回水管上还设有循环驱动件,使用时所述循环驱动件和/或所述热水开关阀处于开启状态,所述冷水进水管与所述水流侧管路入口连通。无论类似厨房和洗手间这些热水供应区是否需要放热水,所述水冷冰箱均能够正常运转,在节约资源的情况下,保障所述水冷冰箱循环系统中各个器件均能够正常运转。(The invention relates to a circulating system of a water-cooled refrigerator, which comprises the water-cooled refrigerator, a water return pipe and a cold water inlet pipe, wherein one end of the water return pipe is communicated with an outlet of a water flow side pipeline of a condenser of the water-cooled refrigerator, the other end of the water return pipe is communicated with an inlet of the water flow side pipeline, the water return pipe passes through a hot water supply area, a hot water switch valve is arranged on a part of the water return pipe, which passes through the hot water supply area, a circulating driving piece is further arranged on the water return pipe, the circulating driving piece and/or the hot water switch valve are/is in an open state when the water-cooled refrigerator is used, and the cold water. The water-cooled refrigerator can normally operate no matter whether hot water supply areas such as a kitchen and a toilet need to release hot water or not, and under the condition of saving resources, all devices in a circulating system of the water-cooled refrigerator can be guaranteed to normally operate.)

1. The utility model provides a water-cooling refrigerator circulation system, its characterized in that, includes water-cooling refrigerator, wet return and cold water inlet tube, wet return one end with the export intercommunication of the rivers side pipeline of water-cooling refrigerator's condenser, the wet return other end with the entry intercommunication of rivers side pipeline, wet return is distinguished through the hot water supply, the wet return is gone up the route the part in hot water supply district is equipped with hot water ooff valve, still be equipped with the circulation driving piece on the wet return, during the use circulation driving piece and/or hot water ooff valve is in the open mode, the cold water inlet tube with rivers side pipeline entry intercommunication.

2. The water-cooled refrigerator circulating system of claim 1, wherein a first check valve is provided at an end of the return pipe adjacent to the inlet of the water flow side pipe to prevent water in the cold water inlet pipe from flowing back into the return pipe.

3. The water-cooled refrigerator circulation system of claim 1, further comprising a supply-area cold water pipe communicating between the cold water inlet pipe and the hot water switching valve.

4. The water-cooled refrigerator circulation system according to claim 1, wherein a pipe diameter of the water flow side pipe is smaller than a pipe diameter of the return pipe.

5. The water-cooled refrigerator circulation system of claim 1, wherein the condenser is located at a top of the water-cooled refrigerator.

6. The water-cooled refrigerator circulation system of claim 1, further comprising a switch valve sensor for sensing whether the hot water switch valve is in an open state, wherein the switch valve sensor is electrically connected to the cycle driving member, or the cycle driving member is electrically connected to the hot water switch valve, or both the cycle driving member and the hot water switch valve are electrically connected to a controller of the water-cooled refrigerator circulation system.

7. The water-cooled refrigerator cycle system of any one of claims 1 to 6, wherein a portion of the water return pipe between the outlet of the water flow side pipeline and the hot water switch valve is a first water return pipe section, a series water heater is disposed on the first water return pipe section, and the series water heater is electrically connected to the cycle driving member.

8. The water-cooled refrigerator circulation system according to claim 7, further comprising a bypass line connected in parallel between an inlet and an outlet of the water flow side line, an outlet end of the bypass line communicating with the water return pipe between the outlet of the water flow side line and the series water heater, the bypass line being provided with a bypass switch valve, a portion of the water return pipe between an inlet end of the bypass line and the inlet of the water flow side line being provided with a first switch valve, and a portion of the water return pipe between an outlet end of the bypass line and the outlet of the water flow side line being provided with a second switch valve.

9. The water-cooled refrigerator circulation system according to any one of claims 1 to 6, further comprising a parallel water heater and a water heater cold water pipe, wherein an outlet of the parallel water heater is communicated with the hot water switch valve, the water heater cold water pipe is communicated between the cold water inlet pipe and an inlet of the parallel water heater, a portion of the water return pipe, which is located between an outlet of the water flow side pipeline and the hot water switch valve, is a first water return pipe section, and a second check valve is arranged on the first water return pipe section, and is used for preventing hot water discharged from the outlet of the parallel water heater from flowing back into the water flow side pipeline from the first water return pipe section.

10. The water-cooled refrigerator circulation system according to claim 9, wherein a portion of the water return pipe between the water flow side pipeline inlet and the circulation driving member is a second water return pipe section, the second water return pipe section is in cross communication with the water heater cold water pipe, a third check valve is arranged on the second water return pipe section, and the third check valve is located between the circulation driving member and the water heater cold water pipe and used for preventing cold water in the water heater cold water pipe from flowing back to the second water return pipe section.

11. The water-cooled refrigerator cycle system of any one of claims 1 to 6, wherein a portion of the water return pipe between the outlet of the water flow side pipeline and the hot water switch valve is a first water return pipe section, and the first water return pipe section is routed through a compressor or an air conditioner condenser of the water-cooled refrigerator.

Technical Field

The invention relates to the technical field of heat exchange systems, in particular to a water-cooling refrigerator circulating system.

Background

In daily life, hot water is often used in hot water supply areas such as kitchens and toilets, and a common mode is to provide hot water by heating with a water heater. In the using process, the water faucet needs to be opened for a period of time, and hot water flows out after cold water in the pipeline is discharged. On the one hand, the problem that hot water cannot be discharged in time exists, and on the other hand, the problem of water resource waste also exists.

The refrigerator is used as a refrigerating device, a large amount of heat is released from a condenser in the refrigerating process, and the heat is generally released into the air through conduction, so that the refrigerating process of the refrigerator can be smoothly carried out, and the resource waste exists. The heat generated by the refrigerator can be used for the hot water supply areas in the kitchen or the restroom, thereby saving resources.

The demand for hot water in the kitchen or the toilet is intermittently unstable, and the refrigerating operation of the refrigerator is generally continuous. Sometimes, the heat provided by the condenser of the refrigerator is insufficient to meet the hot water supply requirement, sometimes, the heat of the condenser is excessive and cannot be smoothly discharged, and therefore all devices in the whole circulation system cannot normally operate.

Disclosure of Invention

Based on this, it is necessary to provide a water-cooled refrigerator circulation system so that each device can operate normally.

The utility model provides a water-cooling refrigerator circulation system, includes water-cooling refrigerator, wet return and cold water inlet tube, wet return one end with the export intercommunication of the rivers side pipeline of water-cooling refrigerator's condenser, the wet return other end with the entry intercommunication of rivers side pipeline, wet return is through hot water supply district, the wet return is gone up the route the part in hot water supply district is equipped with hot water ooff valve, still be equipped with the driving piece that circulates on the wet return, during the use the driving piece that circulates and/or hot water ooff valve is located the open mode, the cold water inlet tube with rivers side pipeline entry intercommunication.

The scheme provides a water-cooled refrigerator circulating system, heat released by a condenser of the water-cooled refrigerator is used for providing the hot water supply area, so that hot water can be discharged immediately when a hot water switch valve of the hot water supply area is opened, and resources are saved. Specifically, a hot water supply area of a return pipe path communicated between an inlet and an outlet of a water flow side pipeline of the condenser is communicated, when heat release water is needed in the hot water switch valve, hot water in the return pipe immediately flows out when the hot water switch valve is opened, and the situation that the hot water flows out after a section of cold water is firstly released is avoided. In the process of releasing heat of the hot water switch valve, the cold water inlet pipe injects cold water into the water flow side pipeline, so that the condenser can normally release heat and normally work. When a hot water switch valve of the hot water supply area is closed, water which absorbs heat in the water flow side pipeline flows into the water return pipe, the circulating driving piece is opened, water flows in the water return pipe under the driving action of the circulating driving piece, heat is conducted through the water return pipe in the flowing process, the heat is released, and water with lower temperature flows back to the water flow side pipeline to absorb heat after the heat is released, so that a complete closed loop is formed. When the hot water switch valve is closed, the circulating driving piece is started, so that the reclaimed water in the closed loop can circulate, and the water-cooled refrigerator can normally work. Therefore, the water-cooled refrigerator can normally operate no matter whether hot water supply areas like a kitchen and a toilet need to release hot water or not, and all devices in the circulating system of the water-cooled refrigerator can normally operate under the condition of saving resources.

In one embodiment, a first check valve is arranged at one end of the water return pipe close to the water flow side pipeline inlet and used for preventing water in the cold water inlet pipe from flowing back to the water return pipe.

In one embodiment, the water heater further comprises a supply area cold water pipe, and the supply area cold water pipe is communicated between the cold water inlet pipe and the hot water switch valve.

In one embodiment, the pipe diameter of the water flow side pipeline is smaller than that of the water return pipe.

In one embodiment, the condenser is located at the top of the water-cooled refrigerator.

In one embodiment, the water-cooling refrigerator circulation system further includes a switch valve sensor for sensing whether the hot water switch valve is in an open state, and the switch valve sensor is electrically connected to the cycle driving member, or the cycle driving member is electrically connected to the hot water switch valve, or both the cycle driving member and the hot water switch valve are electrically connected to the controller of the water-cooling refrigerator circulation system.

In one embodiment, a portion of the water return pipe between the outlet of the water flow-side pipeline and the hot water switch valve is a first water return pipe section, a series water heater is arranged on the first water return pipe section, and the series water heater is electrically connected with the circulating driving member.

In one of the embodiments, the water-cooling refrigerator circulating system further comprises a bypass pipeline, the bypass pipeline is connected in parallel between the inlet and the outlet of the water flow side pipeline, the outlet end of the bypass pipeline is communicated with the outlet of the water flow side pipeline and the water return pipe between the water heaters in series, the bypass pipeline is provided with a bypass switch valve, the part of the water return pipe, which is positioned between the inlet end of the bypass pipeline and the inlet of the water flow side pipeline, is provided with a first switch valve, and the part of the water return pipe, which is positioned between the outlet end of the bypass pipeline and the outlet of the water flow side pipeline, is provided with a second switch valve.

In one embodiment, the water-cooled refrigerator circulation system further comprises a parallel water heater and a water heater cold water pipe, an outlet of the parallel water heater is communicated with the hot water switch valve, the water heater cold water pipe is communicated between the cold water inlet pipe and an inlet of the parallel water heater, a portion of the water return pipe, which is located between an outlet of the water flow side pipeline and the hot water switch valve, is a first water return pipe section, and a second one-way valve is arranged on the first water return pipe section and used for preventing hot water discharged from the outlet of the parallel water heater from flowing back to the water flow side pipeline from the first water return pipe section.

In one embodiment, a part of the water return pipe, which is located between the water flow side pipeline inlet and the circulating driving member, is a second water return pipe section, the second water return pipe section is in cross communication with the cold water pipe of the water heater, a third one-way valve is arranged on the second water return pipe section, and the third one-way valve is located between the circulating driving member and the cold water pipe of the water heater and used for preventing cold water in the cold water pipe of the water heater from flowing back to the second water return pipe section.

In one embodiment, a part of the water return pipe between the outlet of the water flow side pipeline and the hot water switch valve is a first water return pipe section, and the first water return pipe section is routed through a compressor or an air conditioner condenser of the water-cooled refrigerator.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a system diagram of a circulation system of a water-cooled refrigerator according to the present embodiment;

FIG. 2 is a system diagram of a water-cooled refrigerator cycle system according to another embodiment;

FIG. 3 is a system diagram of a water-cooled refrigerator cycle system according to yet another embodiment;

fig. 4 is a system diagram of a refrigeration system in the water-cooled refrigerator according to the present embodiment;

FIG. 5 is an isometric view of the water-cooled refrigerator of this embodiment;

fig. 6 is a front view of the water-cooled refrigerator shown in fig. 5.

Description of reference numerals:

10. a water-cooled refrigerator circulation system; 11. a water-cooled refrigerator; 111. a condenser; 1111. a water flow side pipe; 112. a compressor; 113. an evaporator; 114. a throttling element; 115. a box body; 12. a water return pipe; 121. a cycle drive; 1211. an inductor; 122. a first check valve; 123. a first water return pipe section; 1231. a second one-way valve; 124. a first on-off valve; 125. a second on-off valve; 126. a second return water pipe section; 13. a cold water inlet pipe; 14. a hot water supply section; 141. a hot water switch valve; 142. a supply area cold water pipe; 15. a series water heater; 16. a bypass line; 161. a bypass switch valve; 17. water heaters are connected in parallel; 18. a cold water pipe of the water heater; 19. a third check valve; 20. an air conditioning condenser.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1 to 3, in one embodiment, there is provided a water-cooled refrigerator circulation system 10 including a water-cooled refrigerator 11 and a return pipe 12. One end of the return pipe 12 is connected to an outlet of the water flow side pipe 1111 of the condenser 111 of the water-cooled refrigerator 11 as shown in fig. 4 to 6, and the other end of the return pipe 12 is connected to an inlet of the water flow side pipe 1111. In the process that the water in the water flow side pipe 1111 of the condenser 111 absorbing heat flows in the return pipe 12, the heat is gradually diffused by the natural heat conduction of the return pipe 12, so that the temperature of the water flowing into the water flow side pipe 1111 again is low.

As shown in fig. 1 to 3, the water return pipe 12 passes through a hot water supply area 14, where the hot water supply area 14 refers to a space in a building where hot water needs to be supplied, such as: kitchens, restrooms, public health, and the like. A hot water switching valve 141 is provided at a portion of the return pipe 12 that passes through the hot water supply section 14. The water return pipe 12 is further provided with a circulating driving member 121, and when the water return pipe is used, the circulating driving member 121 and/or the hot water switch valve 141 are/is in an open state. The water-cooling refrigerator circulating system 10 further comprises a cold water inlet pipe 13, and the cold water inlet pipe 13 is communicated with the inlet of the water flow side pipeline 1111.

When the hot water supply area 14 needs hot water, the hot water switch valve 141 is opened, and the hot water in the return pipe 12 flows out from the hot water switch valve 141 for use by a user. The water heater can be used after being opened, and the situation that hot water flows out after cold water is put for a period of time can not exist. The heat released by the condenser 111 of the water-cooled refrigerator 11 is used by the user of the hot water supply area 14, thereby saving resources. In the process of opening the hot water discharge valve 141, the cold water inlet pipe 13 injects cold water into the water flow side pipeline 1111, so that the condenser 111 can normally release heat and normally work. When the hot water switch valve 141 of the hot water supply section 14 is closed, the water absorbed in the water flow-side pipe 1111 flows into the water return pipe 12, the water flows in the water return pipe 12 by the driving of the circulation driving member 121, heat is transferred through the water return pipe 12 during the flow, the heat is released, and the water having a lower temperature after the heat is released flows back into the water flow-side pipe 1111 to absorb the heat, thereby forming a complete closed loop. When the hot water switch valve 141 is closed, the circulation driving member 121 is started, so that the reclaimed water in the closed loop can circulate, and the water-cooled refrigerator 11 can normally work. Therefore, the water-cooled refrigerator 11 can normally operate no matter whether the hot water supply area 14 such as a kitchen and a toilet needs to release hot water or not, and all devices in the water-cooled refrigerator circulating system 10 can normally operate under the condition of saving resources.

Specifically, as shown in fig. 4, the refrigeration system in the water-cooled refrigerator 11 includes a compressor 112, an evaporator 113, a throttling element 114, and a condenser 111, which are connected in sequence. Refrigerant in the refrigeration system flows in refrigerant-side pipes of the compressor 112, the evaporator 113, the throttling element 114, and the condenser 111, a water-side pipe 1111 of the condenser 111 communicates with the return pipe 12, and water in the water-side pipe 1111 absorbs heat of the refrigerant in the refrigerant-side pipe and then enters the return pipe 12. After the water in the water return pipe 12 conducts and releases heat in the flowing process, the water with lower temperature flows into the water flow side pipeline 1111 again to absorb heat, so as to circulate. Or, after the hot water with a high temperature in the return pipe 12 flows out from the hot water switching valve 141, the cold water inlet pipe 13 introduces the cold water with a low temperature into the water flow side pipe 1111 to absorb heat.

Specifically, the condenser 111 may be a shell-and-tube condenser or a double-tube condenser.

Further, in one embodiment, the pipe diameter of the water flow side pipe 1111 is smaller than the pipe diameter of the water return pipe 12, so that the flow rate of the water flow in the water flow side pipe 1111 is higher, but the flow rate in the whole water return pipe 12 is smaller, thereby improving the heat exchange effect.

Specifically, as shown in fig. 5 and 6, in one embodiment, the condenser 111 is located at the top of the water-cooled refrigerator 11, so that the water flow side pipe 1111 of the condenser 111 is connected to the water return pipe 12, thereby improving the convenience of installation. The top of the body 115 of the water-cooled refrigerator 11 is recessed inward to provide an installation space for the condenser 111.

Furthermore, a small section of hose is arranged at each end of the water flow side pipeline 1111 and serves as a transition pipeline section, so that the requirement on the alignment precision when the water flow side pipeline section is connected with the water return pipe 12 is reduced.

As illustrated in fig. 5 and 6, in one embodiment, the refrigeration system has the compressor 112 at the bottom and the evaporator 113 at the back of the freezer compartment.

Further, as shown in fig. 1 to 3, in one embodiment, a first check valve 122 is disposed at an end of the return pipe 12 near the inlet of the water flow side pipe 1111, for preventing water in the cold water inlet pipe 13 from flowing back into the return pipe 12.

In order to enable the condenser 111 to operate normally when the hot water switch valve 141 is opened, the cold water inlet pipe 13 is provided to supply cold water to the water flow side pipe 1111 to absorb heat in the refrigerant side pipe of the condenser 111. The first check valve 122 is provided such that the water in the cold water inlet pipe 13 can flow only into the water flow side pipe 1111 and does not flow back into the return pipe 12.

Further, in one embodiment, to ensure that the circulation driving member 121 and/or the hot water switch valve 141 are/is in an open state during use, the water-cooled refrigerator 11 can work normally. The water-cooling refrigerator circulation system 10 further includes a switching valve sensing member for sensing whether the hot water switching valve 141 is in an open state, the switching valve sensing member being electrically connected to the circulation driving member 121. When the on-off valve sensing member 141 detects that the hot water on-off valve 141 is in a closed state, the circulation driving member 121 electrically connected to the on-off valve sensing member is activated, so that water flows and circulates in the water return pipe 12.

Alternatively, the circulation driving member 121 is directly electrically connected to the hot water switch valve 141. Or, the circulation driving element 121 and the hot water switch valve 141 are both electrically connected to a controller of the water-cooled refrigerator circulation system 10, and the controller uniformly controls the circulation driving element 121 and the hot water switch valve 141, so that at least one of the circulation driving element 121 and the hot water switch valve 141 is in an open state during use.

Further, as shown in fig. 1 to 3, in one embodiment, the water-cooled refrigerator circulation system 10 further includes a supply-area cold water pipe 142, and the supply-area cold water pipe 142 is communicated between the cold water inlet pipe 13 and the hot water switching valve 141.

When the temperature of the water in the water return pipe 12 is too high and the temperature of the water is too high after the hot water switch valve 141 of the hot water supply area 14 is opened, which does not meet the user requirement, the cold water pipe 142 of the supply area can introduce part of the cold water in the cold water inlet pipe 13 into the hot water switch valve 141, so as to adjust the temperature of the water to the temperature required by the user. Specifically, the hot water switch valve 141 may be a switch valve for both cold water and hot water, so that the outlet water temperature can be flexibly adjusted.

Further, as shown in fig. 1, in one embodiment, a portion of the return pipe 12 between the outlet of the water flow side pipe 1111 and the hot water switch valve 141 is a first return pipe section 123. The first water return pipe section 123 is provided with a series water heater 15, and the series water heater 15 is electrically connected with the circulating driving part 121.

The series water heater 15 can further heat the water in the water return pipe 12, and when the series water heater 15 works in a heating state, it is proved that the water temperature provided by the condenser 111 cannot meet the user requirement, the water absorbed with the heat of the condenser 111 in the first water return pipe section 123 needs to be further heated, so that the outlet water temperature at the hot water switch valve 141 is further increased. When the series water heater 15 is turned on, the circulation driving member 121 electrically connected to the series water heater 15 stops operating, in other words, the hot water is required to be completely supplied to the hot water switch valve 141, and is not required to circulate back to the inlet of the water flow side pipeline 1111 through the water return pipe 12, and the inlet of the water flow side pipeline 1111 mainly depends on the cold water inlet pipe 13 to provide cold water to absorb heat in the refrigerant side pipeline.

Specifically, the series water heater 15 may be directly electrically connected to the circulation driving member 121, or indirectly electrically connected through the inductor 1211 as shown in fig. 1, or the series water heater 15 and the circulation driving member 121 may be controlled by a controller.

Further, as shown in fig. 1, in one embodiment, the water-cooled refrigerator cycle system 10 further includes a bypass line 16, and the bypass line 16 is connected in parallel between the inlet and the outlet of the water flow side line 1111. The outlet end of the bypass line 16 is communicated with the return pipe 12 between the outlet of the water flow side line 1111 and the series water heater 15. The bypass line 16 is provided with a bypass switch valve 161, a first switch valve 124 is provided at a portion of the return pipe 12 between an inlet end of the bypass line 16 and an inlet of the water flow-side line 1111, and a second switch valve 125 is provided at a portion of the return pipe 12 between an outlet end of the bypass line 16 and an outlet of the water flow-side line 1111.

The arrangement of the bypass pipeline 16, the bypass switch valve 161, the first switch valve 124 and the second switch valve 125 enables the series water heater 15 to be used normally when the water-cooled refrigerator 11 is replaced. Specifically, in normal use of the water-cooled refrigerator 11, the bypass switch valve 161 is closed, the bypass line 16 is closed, and the first switch valve 124 and the second switch valve 125 are opened, so that the water-cooled refrigerator 11 is communicated with the series water heater 15. When the water-cooled refrigerator 11 needs to be replaced or maintained, or the water-cooled refrigerator 11 does not operate, the bypass switch valve 161 is opened, the bypass pipeline 16 is conducted, the first switch valve 124 and the second switch valve 125 are closed, cold water provided by the cold water inlet pipe 13 can flow into the series water heater 15 through the bypass pipeline 16, so that the series water heater 15 can be normally used, and the hot water switch valve 141 can be opened to provide hot water.

Further, as shown in fig. 2, in another embodiment, the water-cooled refrigerator circulation system 10 further includes a parallel water heater 17 and a water heater cold water pipe 18, an outlet of the parallel water heater 17 is communicated with the hot water switch valve 141, the water heater cold water pipe 18 is communicated between the cold water inlet pipe 13 and an inlet of the parallel water heater 17, cold water provided by the cold water inlet pipe 13 can be directly introduced into the parallel water heater 17 through the water heater cold water pipe 18, and hot water heated by the parallel water heater 17 flows into the hot water switch valve 141 again. The part of the return pipe 12 that is located between the outlet of the water flow side pipeline 1111 and the hot water switch valve 141 is a first return pipe section 123, a second check valve 1231 is arranged on the first return pipe section 123 for avoiding the hot water discharged from the outlet of the parallel water heater 17 from returning to the first return pipe section 123 in the water flow side pipeline 1111, ensuring that the condenser 111 can be normally used, and the water-cooled refrigerator 11 can normally refrigerate.

When the outlet of the parallel water heater 17 is in communication with the first return pipe segment 123, and thus indirectly with the hot water switching valve 141, through a heater pipe, as shown in fig. 2, the second one-way valve 1231 is located on the first return pipe segment 123 between the outlet of the water flow side pipe 1111 and the heater pipe.

Further, as shown in fig. 2, in one embodiment, a portion of the water return pipe 12 located between the inlet of the water flow side pipeline 1111 and the circulation driving member 121 is a second water return pipe section 126, the second water return pipe section 126 is in cross communication with the water heater cold water pipe 18, a third check valve 19 is disposed on the second water return pipe section 126, and the third check valve 19 is located between the circulation driving member 121 and the water heater cold water pipe 18 and is used for preventing cold water in the water heater cold water pipe 18 from flowing back to the second water return pipe section 126.

The water in the water return pipe 12 can directly flow into the parallel water heater 17, specifically, the water can flow into all or part of the parallel water heater 17, and the cold water is mainly provided by the cold water inlet pipe 13 in the water flow side pipeline 1111 of the condenser 111. Both the water heated by the parallel water heater 17 and the hot water absorbed by the water flow side pipeline 1111 of the condenser 111 flow into the water return pipe 12 and are available for the hot water supply area 14.

Further, as shown in fig. 2, when the second water return pipe segment 126 is provided with the first check valve 122, the first check valve 122 is located between the cold water pipe 18 of the water heater and the condenser 11.

Further, in still another embodiment, as shown in fig. 3, a portion of the return pipe 12 between the outlet of the water flow side pipe 1111 and the hot water switching valve 141 is a first return pipe section 123, and the first return pipe section 123 routes the compressor 112 or the air conditioner condenser 20 of the water-cooled refrigerator 11, further using heat generated from the compressor 112 or the air conditioner condenser 20.

Further, as shown in fig. 3, when the first water return pipe section 123 is provided with the series-connected water heater 15, for convenience of maintenance, an air conditioner bypass pipeline is further connected in parallel to the air conditioner condenser, one end of the air conditioner bypass pipeline is communicated with a pipe section, which is located between the outlet of the air conditioner condenser and the hot water switch valve 121, of the first water return pipe section 123, the other end of the air conditioner bypass pipeline is communicated with the cold water inlet pipe 13, and the air conditioner bypass pipeline is provided with a switch valve for controlling the on-off of the bypass pipeline. Therefore, during maintenance, the air conditioner bypass pipeline is conducted, and cold water in the cold water inlet pipe 13 can flow into the series water heater 15 through the air conditioner bypass pipeline, so that the hot water supply condition of the hot water supply area 14 cannot be influenced.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.