Water drinking equipment

Abstract

The utility model belongs to the technical field of water drinking equipment, and particularly provides water drinking equipment. The utility model aims to solve the problem that the heating efficiency of a heat pump system of the existing drinking water equipment on hot water is lower. Therefore, the water drinking equipment comprises a waterway system, a heat pump system and an auxiliary heat exchanger. The waterway system comprises a hot water container and a cold water container. The heat pump system comprises a compressor, a condenser, a throttling pressure reduction component and an evaporator which are sequentially connected end to end to form a loop, the condenser is used for heating water in the hot water container, and the evaporator is used for cooling water in the cold water container. The auxiliary heat exchanger comprises a waterway channel and a refrigerant channel, and the waterway channel is in fluid connection with the waterway system so as to receive water from the waterway system; the refrigerant channel is connected between an outlet of the throttling pressure reduction component and an inlet of the compressor in series and is connected with the evaporator in series or in parallel. According to the utility model, the heating efficiency of the heat pump system on hot water is improved, and the technical problem is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drinking water equipment, and specifically provides a drinking water equipment. Background Art

[0002] The development trend of drinking water equipment is moving towards energy conservation, high efficiency and intelligence. Traditional water dispensers often rely on electric heating devices such as electric heating tubes and electric heating wires to directly heat cold water or maintain the temperature of hot water. This method has high energy consumption. With the improvement of environmental awareness and technological progress, heat pump technology has been introduced into drinking water equipment to achieve efficient and energy-saving heating and cooling functions.

[0003] The heat pump system uses a small amount of electric energy to drive the compressor to work, and transfers heat through the state change of the refrigerant (also called refrigerant) (from gas to liquid and then to gas), realizing the heat transfer from a low-temperature environment to a high-temperature environment. The heat pump system can not only provide heat energy for the hot water tank through the condenser, but also cool the cold water tank through the evaporator, so as to meet the user's needs for hot water and cold water at the same time. Therefore, the drinking water equipment applying the heat pump system significantly improves the energy utilization rate and reduces the power consumption.

[0004] For general users, the use of hot water is more than that of cold water. Therefore, the volume of the hot water tank of some drinking water equipment is usually larger than that of the cold water tank. And because the temperature of hot water is generally above 75°C and the temperature of cold water is generally below 10°C, it makes the heat required for heating water from normal temperature to hot water more, but the heat released when cooling water from normal temperature to cold water is less. That is, the water in the cold water tank cannot provide enough heat for the water in the hot water tank, resulting in the hot water in the hot water tank not meeting the standard. Therefore, it is still necessary to use an electric heating device to further heat the hot water.

[0005] Therefore, the heating efficiency of the heat pump system of the existing drinking water equipment for hot water is low. Summary of the Utility Model

[0006] An object of the utility model is to solve the problem that the heating efficiency of the heat pump system of the existing drinking water equipment for hot water is low.

[0007] To achieve the above object, the utility model provides a drinking water equipment, including:

[0008] A water circuit system, including a hot water tank and a cold water tank;

[0009] A heat pump system, including a compressor, a condenser, a throttling and pressure-reducing component and an evaporator that are connected end to end in sequence to form a loop. The condenser is used to heat the water in the hot water tank, and the evaporator is used to cool the water in the cold water tank;

[0010] The auxiliary heat exchanger includes a water channel and a refrigerant channel. The water channel is fluidly connected to the water system to receive water from the water system. The refrigerant channel is connected in series between the outlet of the throttling and pressure-reducing component and the inlet of the compressor and is connected in series or in parallel with the evaporator.

[0011] Optionally, the refrigerant channel is connected in series between the outlet of the evaporator and the inlet of the compressor.

[0012] Optionally, the heat pump system further includes a first reversing valve connected in series between the outlet of the throttling and pressure-reducing component and the inlet of the evaporator. The first reversing valve is also fluidly connected to the inlet of the refrigerant channel. The first reversing valve is used to control the flow direction of the refrigerant flowing through it to the evaporator or the refrigerant channel.

[0013] Optionally, the heat pump system further includes a second reversing valve connected in series between the outlet of the throttling and pressure-reducing component and the inlet of the evaporator. The refrigerant channel is connected in series between the second reversing valve and the inlet of the compressor and is connected in parallel with the evaporator. The second reversing valve is used to control the flow direction of the refrigerant flowing through it to the evaporator or the refrigerant channel.

[0014] Optionally, the water system further includes a filter. The filter includes a water inlet, a purified water outlet, and a waste water outlet. The water inlet is used to connect to a water source. The purified water outlet is fluidly connected to the hot water tank and the cold water tank respectively. The waste water outlet is fluidly connected to the water channel of the auxiliary heat exchanger.

[0015] Optionally, the water system further includes a water collection tank. The purified water outlet, the hot water tank, and the cold water tank are respectively fluidly connected to the water collection tank so that the purified water flowing out of the purified water outlet flows to the hot water tank or the cold water tank via the water collection tank.

[0016] Optionally, the water collection tank is provided with a normal temperature water outlet.

[0017] Optionally, the water system further includes a waste water tank. The waste water tank is connected in series between the waste water outlet and the water channel of the auxiliary heat exchanger.

[0018] Optionally, the drinking water device further includes an electric heating device. The electric heating device is used to heat the water in the hot water tank or the water flowing out of the hot water tank.

[0019] Optionally, the electric heating device is connected in series with the water outlet of the hot water tank.

[0020] Based on the foregoing description, those skilled in the art can understand that in the foregoing technical solution of the present utility model, by configuring an auxiliary heat exchanger for the drinking water device, the heat pump system can also absorb heat through the auxiliary heat exchanger, so that the condenser provides more heat for the hot water tank, and thus the heating efficiency of the heat pump system for heating hot water is improved. Specifically, the water channel of the auxiliary heat exchanger is fluidly connected to the water system to receive water from the water system; the refrigerant channel of the auxiliary heat exchanger is connected in series between the outlet of the throttling and pressure-reducing component and the inlet of the compressor and is connected in series or in parallel with the evaporator, so that the heat pump system can absorb the heat of the water in the part of the water system other than the hot water tank and the cold water tank, improving the utilization rate of the heat of the water in the water system by the drinking water device.

[0021] Furthermore, by connecting the refrigerant channel of the auxiliary heat exchanger in series between the outlet of the evaporator and the inlet of the compressor, the auxiliary heat exchanger is connected in series downstream of the evaporator, so that the refrigerant in the heat pump system first cools the water in the cold water tank, ensuring the refrigeration efficiency of the heat pump system for cold water.

[0022] Furthermore, by connecting a first reversing valve in series between the outlet of the throttling and pressure-reducing component and the inlet of the evaporator and fluidly connecting the first reversing valve to the inlet of the refrigerant channel, the first reversing valve can control the flow direction of the refrigerant flowing through it to the evaporator or the refrigerant channel. Thus, when the cold water in the cold water tank reaches the standard, the refrigerant no longer flows through the evaporator but through the refrigerant channel of the auxiliary heat exchanger, so that the heat pump system absorbs heat through the auxiliary heat exchanger.

[0023] Furthermore, by configuring a filter for the water system and fluidly connecting the waste water outlet of the filter to the water channel of the auxiliary heat exchanger, the heat pump system can absorb the heat of the waste water through the auxiliary heat exchanger, avoiding the waste of heat when the waste water is drained.

[0024] Furthermore, by configuring a water collection tank for the water system and fluidly connecting the filter, the hot water tank, and the cold water tank to the water collection tank respectively, the purified water flowing out of the purified water inlet flows through the water collection tank to the hot water tank or the cold water tank, so that the filtered purified water can be cached in the water collection tank. When the water in the hot water tank and / or the cold water tank is drained, water can be quickly replenished from the water collection tank; compared with directly receiving the water filtered by the filter, the water replenishment efficiency of the hot water tank and the cold water tank is greatly improved.

[0025] Furthermore, by connecting a waste water tank in series between the waste water outlet and the water channel of the auxiliary heat exchanger, the waste water discharged from the filter can be cached in the waste water tank. When the water temperature in the water channel of the auxiliary heat exchanger is too low, the water in the waste water tank can flow into the water channel to ensure that there is a sufficient temperature difference between the water channel and the refrigerant channel, and thus ensure that the heat pump system can absorb heat through the auxiliary heat exchanger.

[0026] Other beneficial effects of the present utility model will be described in detail in conjunction with the accompanying drawings hereinafter, so that those skilled in the art can more clearly understand the improvement objectives, features and advantages of the present utility model. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the present utility model, some embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings. It should be understood by those skilled in the art that the components or parts denoted by the same reference numeral in different drawings are the same or similar; the drawings of the present utility model are not necessarily drawn to scale. In the drawings:

[0028] Figure 1 is a schematic diagram of the principle of the drinking water device in the first embodiment of the present utility model;

[0029] Figure 2 is a schematic diagram of the principle of the drinking water device in the second embodiment of the present utility model;

[0030] Figure 3 is a schematic diagram of the principle of the drinking water device in the third embodiment of the present utility model;

[0031] Figure 4 is a schematic diagram of the principle of the drinking water device in the fourth embodiment of the present utility model.

[0032] Description of the Reference Numerals in the Drawings:

[0033] 001, drinking water device;

[0034] 100, water circuit system; 110, hot water tank; 120, cold water tank; 130, filter; 131, water inlet; 132, purified water outlet; 133, waste water outlet; 140, water collection tank; 141, normal temperature water outlet; 150, waste water tank;

[0035] 200, heat pump system; 210, compressor; 220, condenser; 230, throttling and pressure reducing member; 240, evaporator; 251, first reversing valve; 252, second reversing valve;

[0036] 300, auxiliary heat exchanger; 310, water circuit channel; 320, refrigerant channel;

[0037] 400, electric heating device. Detailed Embodiments

[0038] Those skilled in the art should understand that the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments of the present utility model. This part of the embodiments is intended to explain the technical principle of the present utility model, rather than to limit the protection scope of the present utility model. Based on the embodiments provided by the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts should still fall within the protection scope of the present utility model.

[0039] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] Furthermore, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. For example, the terms "installation", "connection", "connected" and "fixed", without special description, can specifically be any feasible connection forms such as bolt connection, screw connection, welding, plugging, riveting, fusing, snap connection, etc.

[0041] In addition, it should be noted that in the description of the present utility model, the terms "cooling capacity" and "heat quantity" are two descriptions of the same physical state. That is, the higher the "cooling capacity" of a certain target object (such as an evaporator, air, condenser, etc.), the lower the "heat quantity" it has, and the lower the "cooling capacity", the higher the "heat quantity" it has. When a certain target object absorbs "cooling capacity", it will release "heat quantity", and when it releases "cooling capacity", it will absorb "heat quantity". A certain target object stores "cooling capacity" or "heat quantity" to keep the current temperature of the target object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain target object (such as an evaporator) will absorb heat while refrigerating.

[0042] As Figure 1 shown, in the present utility model, the drinking water device 001 includes a water circuit system 100, a heat pump system 200, and an auxiliary heat exchanger 300.

[0043] Among them, the water circuit system 100 includes a hot water tank 110 and a cold water tank 120. The hot water tank 110 is used to store hot water, and the cold water tank 120 is used to store cold water.

[0044] Among them, the heat pump system 200 includes a compressor 210, a condenser 220, a throttling and pressure-reducing component 230, and an evaporator 240 that are connected end to end in sequence to form a loop. The condenser 220 is used to heat the water in the hot water tank 110, and the evaporator 240 is used to cool the water in the cold water tank 120.

[0045] Among them, the auxiliary heat exchanger 300 includes a water circuit channel 310 and a refrigerant channel 320. The water circuit channel 310 is fluidly connected to the water circuit system 100 to receive water from the water circuit system 100; the refrigerant channel 320 is connected in series between the outlet of the throttling and pressure-reducing component 230 and the inlet of the compressor 210 and is connected in series or in parallel with the evaporator 240.

[0046] Those skilled in the art can understand that by configuring the auxiliary heat exchanger 300 for the drinking water device 001, the heat pump system 200 can also absorb heat through the auxiliary heat exchanger 300, so that the condenser 220 provides more heat for the hot water tank 110, and thus improves the heating efficiency of the heat pump system 200 for hot water. Specifically, the water circuit channel 310 of the auxiliary heat exchanger 300 is fluidly connected to the water circuit system 100 to receive water from the water circuit system 100; the refrigerant channel 320 of the auxiliary heat exchanger 300 is connected in series between the outlet of the throttling and pressure-reducing component 230 and the inlet of the compressor 210 and is connected in series or in parallel with the evaporator 240, so that the heat pump system 200 can absorb the heat of the water in the part of the water circuit system 100 other than the hot water tank 110 and the cold water tank 120, and improves the utilization rate of the heat of the water in the water circuit system 100 by the drinking water device 001.

[0047] It should be noted that in the present utility model, the throttling and pressure-reducing component 230 can be an expansion valve, a capillary tube, or any other feasible throttling component.

[0048] Further, when the compressor 210 operates, the refrigerant can circulate along the following path: compressor 210 → condenser 220 → throttling and pressure-reducing component 230 → evaporator 240 → compressor 210.

[0049] When the refrigerant flows through the compressor 210, it is compressed by the compressor 210 into a high-temperature and high-pressure state (liquid state or gas-liquid mixed state).

[0050] When the refrigerant flows through the condenser 220, it dissipates heat through the condenser 220 and cools down to a low-temperature and high-pressure state (liquid state or gas-liquid mixed state).

[0051] When the refrigerant flows through the throttling and pressure-reducing member 230, it is throttled and pressure-reduced by the throttling and pressure-reducing member 230 into a low-temperature and low-pressure state (liquid state or gas-liquid mixed state).

[0052] When the refrigerant flows through the evaporator 240, it absorbs heat from the external environment through the evaporator 240 and is heated into a high-temperature and low-pressure state (gaseous state).

[0053] It should be noted that the aforementioned states of the refrigerant in the compressor 210, the condenser 220, the throttling and pressure-reducing member 230, and the evaporator 240, that is, the high temperature, low temperature, high pressure, and low pressure of the refrigerant, are the states of the refrigerant after entering or flowing out of the corresponding components compared to its state before flowing into the corresponding components.

[0054] Next, with reference to Figures 1 to 4 , the drinking water device 001 of the present invention will be illustrated by way of example.

[0055] As Figure 1 shown, in the first embodiment of the present invention, the refrigerant channel 320 is connected in series between the outlet of the evaporator 240 and the inlet of the compressor 210.

[0056] Those skilled in the art can understand that by connecting the refrigerant channel 320 of the auxiliary heat exchanger 300 in series between the outlet of the evaporator 240 and the inlet of the compressor 210, the auxiliary heat exchanger 300 is connected in series downstream of the evaporator 240, so that the refrigerant in the heat pump system 200 first cools the water in the cold water tank 120, ensuring the refrigeration efficiency of the heat pump system 200 for cold water.

[0057] Continuing to refer to Figure 1 , in the first embodiment of the present invention, the water circuit system 100 may further include a filter 130. The filter 130 includes a water inlet 131, a purified water outlet 132, and a wastewater outlet 133. The water inlet 131 is used to connect to a water source (such as a tap water pipe joint). The purified water outlet 132 is fluidly connected to the hot water tank 110 and the cold water tank 120 respectively. The wastewater outlet 133 is fluidly connected to the water channel 310 of the auxiliary heat exchanger 300.

[0058] Those skilled in the art can understand that by fluidly connecting the wastewater outlet 133 of the filter 130 to the water channel 310 of the auxiliary heat exchanger 300, the heat pump system 200 can absorb the heat of the wastewater through the auxiliary heat exchanger 300, avoiding the waste of heat when the wastewater is drained.

[0059] Continuing to refer to Figure 1, in the first embodiment of the present utility model, the water circuit system 100 may further include a water collection tank 140. The purified water inlet 132, the hot water tank 110, and the cold water tank 120 are respectively fluidly connected to the water collection tank 140, so that the purified water flowing out from the purified water inlet 132 flows through the water collection tank 140 to the hot water tank 110 or the cold water tank 120.

[0060] Among them, the water collection tank 140 may be a box in the form of a cube, or a columnar tank, or any other form of container.

[0061] Those skilled in the art can understand that by configuring the water collection tank 140 for the water circuit system 100 and fluidly connecting the filter 130, the hot water tank 110, and the cold water tank 120 to the water collection tank 140 respectively, the purified water flowing out from the purified water inlet 132 flows through the water collection tank 140 to the hot water tank 110 or the cold water tank 120, so that the filtered purified water can be cached in the water collection tank 140. When the water in the hot water tank 110 and / or the cold water tank 120 is discharged, the water collection tank 140 can quickly supply water; compared with directly receiving the water filtered by the filter 130, the water replenishment efficiency of the hot water tank 110 and the cold water tank 120 is greatly improved.

[0062] Continue to refer to Figure 1 , in the first embodiment of the present utility model, the water collection tank 140 is provided with a normal temperature water outlet 141, so that the normal temperature water in the water collection tank 140 flows out through the normal temperature water outlet 141, so that users can use hot water, cold water, and normal temperature water according to actual needs.

[0063] Furthermore, although not shown in the figure, in this embodiment, a water pump may be configured for the water collection tank 140, so that the water in the water collection tank 140 flows to the hot water tank 110, the cold water tank 120, and the normal temperature water outlet 141 under the action of the water pump.

[0064] Exemplarily, an outlet chamber is defined in the water collection tank 140, or the drinking water device 001 is configured with an outlet chamber communicating with the water collection tank 140. The outlet of the water pump, the hot water tank 110, the cold water tank 120, and the normal temperature water outlet 141 are respectively communicated with the outlet chamber. When the water pump works, the water in the water collection tank 140 is first pumped into the outlet chamber, and then flows to the hot water tank 110, the cold water tank 120, or the normal temperature water outlet 141, so that the water supply to the hot water tank 110, the cold water tank 120, and the normal temperature water outlet 141 can be realized by one water pump.

[0065] Continue to refer to Figure 1 , in the first embodiment of the present utility model, the drinking water device 001 may further include an electric heating device 400, and the electric heating device 400 is used to heat the water in the hot water tank 110 or the water flowing out from the hot water tank 110.

[0066] In the first embodiment of the present utility model, if the heat pump system 200 stops heating the water in the hot water tank 110 before the hot water in the hot water tank 110 reaches the set temperature, the electric heating device 400 is turned on to heat the water in the hot water tank 110 or the water flowing out of the hot water tank 110 through the electric heating device 400.

[0067] Further, the electric heating device 400 is connected in series with the water outlet of the hot water tank 110 so that the electric heating device 400 heats the water flowing out of the hot water tank 110.

[0068] For this purpose, the electric heating device 400 can be an instant water heater.

[0069] It should be noted that, for the convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present utility model, only the differences between the second embodiment and the first embodiment described above will be described in detail hereinafter. For the same parts between the second embodiment and the first embodiment described above, those skilled in the art can refer to the description in the first embodiment above.

[0070] As Figure 2 shown, compared with the first embodiment, the heat pump system 200 in the second embodiment of the present utility model further includes a first reversing valve 251 connected in series between the outlet of the throttling and pressure-reducing member 230 and the inlet of the evaporator 240, and the first reversing valve 251 is also fluidly connected to the inlet of the refrigerant passage 320.

[0071] Wherein, the first reversing valve 251 is used to control the flow direction of the refrigerant flowing through it to the evaporator 240 or the refrigerant passage 320.

[0072] In this embodiment, the first reversing valve 251 can be a two-position three-way reversing valve or any other feasible reversing valve.

[0073] In addition, those skilled in the art can also replace the first reversing valve 251 with other types of control valves according to needs. For example, replace it with two parallel globe valves.

[0074] Those skilled in the art can understand that by connecting the first reversing valve 251 in series between the outlet of the throttling and pressure-reducing member 230 and the inlet of the evaporator 240 and fluidly connecting the first reversing valve 251 to the inlet of the refrigerant passage 320, the first reversing valve 251 can control the flow direction of the refrigerant flowing through it to the evaporator 240 or the refrigerant passage 320. Further, when the cold water in the cold water tank 120 meets the standard, the refrigerant no longer flows through the evaporator 240 but passes through the refrigerant passage 320 of the auxiliary heat exchanger 300, so that the heat pump system 200 absorbs heat through the auxiliary heat exchanger 300.

[0075] It should be noted that, for the convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present utility model, only the differences between the third embodiment and the first embodiment described above will be described in detail hereinafter. For the same parts between the third embodiment and the first embodiment described above, those skilled in the art can refer to the description in the first embodiment above.

[0076] As Figure 3 shown, compared with the first embodiment, the heat pump system 200 in the third embodiment of the present utility model further includes a second reversing valve 252 connected in series between the outlet of the throttling and pressure reducing member 230 and the inlet of the evaporator 240. The refrigerant passage 320 is connected in series between the second reversing valve 252 and the inlet of the compressor 210 and is parallel to the evaporator 240.

[0077] Wherein, the second reversing valve 252 is used to control the refrigerant flowing through it to flow to the evaporator 240 or the refrigerant passage 320.

[0078] In this embodiment, the second reversing valve 252 can be a two-way three-way reversing valve or any other feasible reversing valve.

[0079] In addition, those skilled in the art can also replace the second reversing valve 252 with other types of control valves according to needs. For example, replace it with two parallel globe valves.

[0080] Those skilled in the art can understand that, compared with the second embodiment described above, in the third embodiment, the second reversing valve 252 can make the refrigerant flow only to one of the evaporator 240 and the refrigerant passage 320.

[0081] It should be noted that, for the convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present utility model, only the differences between the fourth embodiment and the second embodiment described above will be described in detail hereinafter. For the same parts between the fourth embodiment and the second embodiment described above, those skilled in the art can refer to the description in the second embodiment above.

[0082] As Figure 4 shown, compared with the second embodiment, the water circuit system 100 in the fourth embodiment of the present utility model further includes a waste water tank 150, and the waste water tank 150 is connected in series between the waste water port 133 and the water circuit passage 310 of the auxiliary heat exchanger 300.

[0083] Those skilled in the art can understand that by connecting the waste water tank 150 in series between the waste water outlet 133 and the water channel 310 of the auxiliary heat exchanger 300, the waste water discharged from the filter 130 can be buffered in the waste water tank 150. When the water temperature in the water channel 310 of the auxiliary heat exchanger 300 is too low, the water in the waste water tank 150 can be made to flow into the water channel 310, thus ensuring that there is a sufficient temperature difference between the water channel 310 and the refrigerant channel 320, and further ensuring that the heat pump system 200 can absorb heat through the auxiliary heat exchanger 300.

[0084] Further, although not shown in the figure, in this embodiment, a water pump can be provided between the water channel 310 and the waste water tank 150, or on the waste water tank 150, to pump the waste water in the waste water tank 150 into the water channel 310 through this water pump.

[0085] Further, those skilled in the art can also, according to needs, make the water circuit system 100 of the first embodiment and / or the third embodiment also include a waste water tank 150, and connect the waste water tank 150 in series between the waste water outlet 133 and the water channel 310 of the auxiliary heat exchanger 300.

[0086] In summary, the drinking water device 001 of the present utility model has at least the following technical effects:

[0087] Improved thermal efficiency: By introducing the auxiliary heat exchanger 300, the heat pump system 200 not only heats the hot water tank 110, but also can additionally absorb and utilize the heat in other parts of the water circuit system 100, significantly enhancing the heating efficiency of hot water and reducing energy consumption.

[0088] Heat recovery and utilization: Passing the waste water generated by the filter 130 through the auxiliary heat exchanger 300 effectively recovers the heat in the waste water, reduces energy waste, and realizes the recycling of resources.

[0089] Rapid water replenishment and temperature adjustment: The setting of the water collection tank 140 improves the water replenishment speed and efficiency of the hot water tank 110 and the cold water tank 120. At the same time, a normal temperature water outlet 141 is added to meet the diverse needs of users. This design also increases the flexibility of the system for adjusting different water temperatures.

[0090] Intelligent temperature control and auxiliary heating: Combined with the electric heating device 400, it is automatically started when the heat pump system 200 cannot meet the set hot water temperature, ensuring the stability of hot water supply. The design of connecting the electric heating device 400 in series with the outlet of the hot water tank 110 further improves the efficiency of instant heating.

[0091] Flexible refrigerant flow control: In the second and third embodiments, the introduction of the first reversing valve 251 and the second reversing valve 252 enables flexible control of the refrigerant flow direction. This not only optimizes the operating mode of the heat pump system 200 but also, when the chilled water reaches the required temperature, absorbs ambient heat through the auxiliary heat exchanger 300, improving the overall energy efficiency ratio of the system.

[0092] Intelligent management of the wastewater tank 150: In the fourth embodiment, by adding a wastewater tank 150 between the wastewater outlet 133 and the auxiliary heat exchanger 300, the water temperature in the water channel 310 can be adjusted as needed, ensuring the efficient progress of the heat exchange process and further enhancing the heat management ability of the system.

[0093] So far, the technical solutions of the present utility model have been described in combination with multiple embodiments above. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is not limited to these specific embodiments. Without departing from the technical principle of the present utility model, those skilled in the art can split and combine the technical solutions in the above various embodiments, and can also make equivalent changes or replacements to relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principle of the present utility model will fall within the protection scope of the present utility model.

[0094] Finally, it should be noted that in the present utility model, the term "connected" means fluid connection to allow fluid (such as air, liquid) to flow between two connected parts. And this "connected" can be such that the fluid flows between two connected parts without leakage, or it can be such that the fluid flows between two connected parts with a little leakage.

Claims

1. A drinking water device, characterized in that: include: Water system, including hot water tank and cold water tank; The heat pump system comprises a compressor, a condenser, a throttling and pressure reducing component and an evaporator which are connected end to end to form a loop, wherein the condenser is used to heat the water in the hot water tank, and the evaporator is used to cool the water in the cold water tank; The auxiliary heat exchanger includes a water channel and a refrigerant channel, wherein the water channel is fluidly connected to the water system to receive water from the water system; the refrigerant channel is connected in series between the outlet of the throttling and pressure reducing component and the inlet of the compressor and is connected in series or in parallel with the evaporator.

2. The drinking water equipment according to claim 1, characterized in that: The refrigerant channel is connected in series between the outlet of the evaporator and the inlet of the compressor.

3. The drinking water equipment according to claim 2, characterized in that: The heat pump system further comprises a first reversing valve connected in series between the outlet of the throttling and pressure reducing component and the inlet of the evaporator, wherein the first reversing valve is also connected to the inlet fluid of the refrigerant channel; The first reversing valve is used to control the refrigerant flowing through it to flow to the evaporator or the refrigerant channel.

4. The drinking water equipment according to claim 1, characterized in that: The heat pump system further includes a second reversing valve connected in series between the outlet of the throttling and pressure reducing component and the inlet of the evaporator, and the refrigerant channel is connected in series between the second reversing valve and the inlet of the compressor and in parallel with the evaporator; The second reversing valve is used to control the refrigerant flowing through it to flow to the evaporator or the refrigerant channel.

5. The drinking water device according to any one of claims 1 to 4, characterized in that: The water system also includes a filter, which includes a water inlet, a clean water outlet and a waste water outlet. The water inlet is used to connect to a water source, the clean water outlet is fluidly connected to the hot water tank and the cold water tank respectively, and the waste water outlet is fluidly connected to the water channel of the auxiliary heat exchanger.

6. The drinking water equipment according to claim 5, characterized in that: The water system also includes a water collecting tank, and the clean water port, the hot water tank and the cold water tank are respectively fluidly connected to the water collecting tank so that the clean water flowing out of the clean water port flows to the hot water tank or the cold water tank via the water collecting tank.

7. The drinking water equipment according to claim 6, characterized in that: The water collecting tank is provided with a normal temperature water outlet.

8. The drinking water equipment according to claim 5, characterized in that: The water channel system further includes a waste water tank, which is connected in series between the waste water outlet and the water channel of the auxiliary heat exchanger.

9. The drinking water device according to any one of claims 1 to 4, characterized in that: The drinking water equipment further comprises an electric heating device, and the electric heating device is used to heat the water in the hot water tank or the water flowing out of the hot water tank.

10. The drinking water equipment according to claim 9, characterized in that: The electric heating device is connected in series with the water outlet of the hot water tank.

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