Hot water tank and heat pump water heater

Abstract

The embodiment of the utility model provides a hot water tank and a heat pump water heater, the hot water tank comprises an inner container assembly and a heat exchange assembly, and the inner container assembly is provided with a water storage cavity and a condensation cavity separated from the water storage cavity; the heat exchange assembly comprises an evaporation piece with a refrigerant evaporation cavity and a condenser arranged in the refrigerant evaporation cavity, the refrigerant evaporation cavity communicates with the condensation cavity, and the condenser exchanges heat with a liquid refrigerant in the refrigerant evaporation cavity, so that the liquid refrigerant is evaporated and enters the condensation cavity. The hot water tank provided by the embodiment of the utility model has relatively high hot water making capacity.

Description

Technical Field

[0001] The present application relates to the field of water heaters, and in particular to a hot water tank and a heat pump water heater. Background Art

[0002] In the related art, there is a heat pump water heater in which a microchannel flat tube heat exchanger is arranged on the outer surface of the water tank inner tank. The microchannel flat tube heat exchanger exchanges heat with the cold water in the water tank inner tank to heat the cold water into hot water.

[0003] However, the microchannel flat tube heat exchanger needs to redistribute the flow of the refrigerant during the heat exchange process, which causes the refrigerant to be unevenly distributed. Some microchannels cannot effectively participate in the condensation heat exchange, resulting in a reduction in the effective heat exchange area of ​​the microchannel flat tube heat exchanger. If the size of the microchannel flat tube heat exchanger is increased to compensate, the refrigerant charge needs to be increased. However, the refrigerant in the microchannel flat tube heat exchanger is generally R290 (propane) refrigerant, and the safety level of R290 is A3. The charge amount in the heat pump water heater is limited, so the size increase of the microchannel flat tube heat exchanger is also limited. Therefore, the microchannel flat tube heat exchanger in the related art is difficult to meet the heating needs of the heat pump water heater. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a hot water tank and a heat pump water heater that can improve the hot water production capacity.

[0005] To achieve the above object, an embodiment of the present application provides a hot water tank, comprising:

[0006] An inner tank assembly, the inner tank assembly comprising a water storage cavity and a condensation cavity separated from the water storage cavity;

[0007] A heat exchange component, the heat exchange component includes an evaporating element having a refrigerant evaporation chamber and a condenser arranged in the refrigerant evaporation chamber, the refrigerant evaporation chamber is connected to the condensation chamber, and the condenser exchanges heat with the liquid refrigerant in the refrigerant evaporation chamber, so that the liquid refrigerant evaporates and enters the condensation chamber.

[0008] In one embodiment, the evaporating element is located at the bottom of the inner tank assembly, and the condensing chamber extends in a direction away from the evaporating element.

[0009] In one embodiment, the inner tank assembly includes an inner tank having the water storage cavity and a condensation element having the condensation cavity, and the condensation element is located in the water storage cavity.

[0010] In one embodiment, the water storage chamber has a first area and a second area surrounding the outer periphery of the first area, and there are multiple condensation elements, which are arranged in the first area.

[0011] In one embodiment, the plurality of condensation elements are randomly distributed in the first area.

[0012] In one embodiment, the evaporator has a mounting portion on one side close to the condensation portion, and an annular protrusion surrounding the outer peripheral side of the mounting portion and protruding into the water storage cavity. The mounting portion is provided with through openings corresponding to the condensation portions one by one. The condensation portions are arranged on the mounting portion, and the condensation cavity of each condensation portion is connected to the corresponding refrigerant evaporation cavity through the through opening.

[0013] In one embodiment, the water storage chamber has a first area and a second area surrounding the outer periphery of the first area, and there are multiple condensation elements, and the multiple condensation elements are arranged in the second area.

[0014] In one embodiment, a plurality of the condensing members are arranged at intervals along a circumference of the first region.

[0015] In one embodiment, there are multiple condensing parts, and the evaporating part includes a first mounting shell and a second mounting shell that are jointly arranged to form the refrigerant evaporation chamber. The first mounting shell is located between the refrigerant evaporation chamber and the condensation chamber, and has a through-hole corresponding to the condensing parts one by one. Multiple condensing parts are arranged on the first mounting shell, and the condensing chamber of each condensing part is connected to the refrigerant evaporation chamber through the corresponding through-hole.

[0016] In one embodiment, the evaporator also includes a plurality of reinforcing plates disposed on the first mounting shell and located in the water storage chamber, a spacing area is provided between two adjacent reinforcing plates, and the through openings are respectively provided at locations of the first mounting shell located in each of the spacing areas.

[0017] In one embodiment, the condensing element is a heat exchange tube.

[0018] In one embodiment, the inner tank assembly includes an inner tank and a partition disposed in the inner tank, and the partition separates the water storage chamber and the condensation chamber in the inner tank.

[0019] In one embodiment, the condensation chamber surrounds the outer circumference of the water storage chamber.

[0020] In one embodiment, the evaporating element has a vacuum pipeline, and the refrigerant evaporation chamber is connected to the outside through the vacuum pipeline.

[0021] In one embodiment, the liquid refrigerant is water.

[0022] In one embodiment, the condenser is a microchannel condenser or a small channel condenser.

[0023] An embodiment of the present application further provides a heat pump water heater, comprising a compressor, a heat exchanger, a heat pump pipeline and the hot water tank described above, wherein the compressor, the heat exchanger and the condenser are arranged on the heat pump pipeline.

[0024] The hot water tank of the embodiment of the present application is provided with an inner tank component and a heat exchange component. The inner tank component has a water storage chamber and a condensation chamber separated from the water storage chamber. The heat exchange component includes an evaporation component having a refrigerant evaporation chamber and a condenser arranged in the refrigerant evaporation chamber. The condenser exchanges heat with the liquid refrigerant in the refrigerant evaporation chamber to evaporate the liquid refrigerant into a gaseous refrigerant. After the gaseous refrigerant enters the condensation chamber, it exchanges heat with the water in the water storage chamber to heat the water in the water storage chamber into hot water. Since the condenser is arranged in the refrigerant evaporation chamber, the condenser can fully exchange heat with the liquid refrigerant in the refrigerant evaporation chamber, and after the gaseous refrigerant formed by the liquid refrigerant absorbing heat and evaporating enters the condensation chamber, it can fully exchange heat with the water in the water storage tank. Therefore, the heat exchange efficiency of the heat exchange component of the embodiment of the present application is relatively high, thereby improving the hot water making capacity of the hot water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a first hot water tank according to an embodiment of the present application;

[0026] Figure 2 for Figure 1 A cross-sectional view of the hot water tank shown;

[0027] Figure 3 This is a schematic structural diagram of a second hot water tank according to an embodiment of the present application;

[0028] Figure 4 for Figure 3 A cross-sectional view of the hot water tank shown;

[0029] Figure 5 This is a schematic structural diagram of a third hot water tank according to an embodiment of the present application;

[0030] Figure 6 for Figure 5 A cross-sectional view of the hot water tank shown;

[0031] Figure 7 This is a schematic structural diagram of a fourth hot water tank according to an embodiment of the present application;

[0032] Figure 8 for Figure 7 A cross-sectional view of a hot water tank is shown.

[0033] Description of reference numerals:

[0034] 10. Inner tank assembly; 10a. Water storage chamber; 10a1. First area; 10a2. Second area; 10b. Condensation chamber; 11. Inner tank; 12. Condensation element; 13. Partition element; 20. Heat exchange assembly; 21. Evaporation element; 21a. Refrigerant evaporation chamber; 21b. Vacuuming port; 21c. Discharge port; 211. Mounting portion; 211a. First through-port; 212. Annular raised portion; 213. First mounting shell; 213a. Second through-port; 214. Second mounting shell; 215. Reinforcement plate; 216. Vacuuming pipeline; 216a. Opening; 22. Condenser; 22a. Gas interface; 22b. Liquid interface. DETAILED DESCRIPTION

[0035] In the description of the embodiments of the present application, it should be noted that the terms "height direction", "top" and "bottom" are based on the attached Figure 1 The orientation or position relationship shown. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] The present application embodiment provides a hot water tank, see Figure 1 The hot water tank includes an inner tank component 10 and a heat exchange component 20.

[0037] The inner tank assembly 10 has a water storage chamber 10a and a condensation chamber 10b separated from the water storage chamber 10a.

[0038] The heat exchange component 20 includes an evaporator 21 having a refrigerant evaporation chamber 21a and a condenser 22 arranged in the refrigerant evaporation chamber 21a. The refrigerant evaporation chamber 21a is connected to the condensation chamber 10b. The condenser 22 exchanges heat with the liquid refrigerant in the refrigerant evaporation chamber 21a, causing the liquid refrigerant to evaporate and enter the condensation chamber 10b.

[0039] The water storage chamber 10a is used for storing water. The condensation chamber 10b is used for exchanging heat with the water in the water storage chamber 10a.

[0040] The water storage chamber 10a and the condensation chamber 10b are separated, which means that the water storage chamber 10a and the condensation chamber 10b are not connected, but heat can be exchanged between the water storage chamber 10a and the condensation chamber 10b.

[0041] The evaporator 21 is a container that contains the liquid refrigerant and the condenser 22 .

[0042] Specifically, after the condenser 22 exchanges heat with the liquid refrigerant in the refrigerant evaporation chamber 21a, the liquid refrigerant evaporates and becomes a gaseous refrigerant. The gaseous refrigerant enters the condensation chamber 10b from the refrigerant evaporation chamber 21a and exchanges heat with the water in the water storage chamber 10a. After the heat exchange, the gaseous refrigerant liquefies into a liquid refrigerant and flows back into the refrigerant evaporation chamber 21a. In other words, the liquid refrigerant evaporates into a gaseous refrigerant in the refrigerant evaporation chamber 21a, and the gaseous refrigerant liquefies into a liquid refrigerant in the condensation chamber 10b, and the cycle continues. The water in the water storage chamber 10a is heated into hot water through heat exchange.

[0043] It should be noted that the water in the water storage chamber 10a can be cold water or warm water, as long as it can be heated to hot water with a higher temperature (for example, 60 to 100 degrees) through heat exchange with the gaseous refrigerant in the condensing chamber 10b.

[0044] The type of condenser 22 is not limited. For example, condenser 22 can be a microchannel condenser or a small channel condenser. A microchannel condenser refers to a pipeline heat exchanger with a pipe diameter range of 0.5 mm to 2 mm (including the end value), and a small channel condenser refers to a pipeline heat exchanger with a pipe diameter range of greater than 2 mm and less than or equal to 5 mm. Microchannel condensers and small channel condensers have high heat exchange efficiency and a relatively small amount of refrigerant.

[0045] The type of refrigerant in the condenser 22 is not limited, as long as it can achieve heat exchange. Exemplarily, the refrigerant in the condenser 22 can be R290. Since the condenser 22 is used to exchange heat with the liquid refrigerant in the refrigerant evaporation chamber 21a, rather than directly exchanging heat with the water in the water storage chamber 10a, a relatively small condenser 22 and a relatively small amount of refrigerant such as R290 can meet the heat exchange requirements. Therefore, for refrigerants with safety level requirements, such as refrigerants such as R290, the requirements of low filling volume can be met.

[0046] It should be noted that the refrigerant in the condenser 22 is not the liquid refrigerant in the refrigerant evaporation chamber 21a. The refrigerant in the condenser 22 is the refrigerant used for heat exchange with the liquid refrigerant in the refrigerant evaporation chamber 21a. The refrigerant in the condenser 22 will only flow through the inside of the condenser 22 and will not enter the refrigerant evaporation chamber 21a.

[0047] Exemplarily, the liquid level of the liquid refrigerant in the refrigerant evaporation chamber 21a may be above the condenser 22, that is, the liquid refrigerant submerges the condenser 22 to extend the service life of the condenser 22. Exemplarily, the liquid level of the liquid refrigerant may be 1 mm to 10 mm (including the endpoint values) higher than the top of the condenser 22.

[0048] Exemplarily, the liquid refrigerant may be water. Preferably, the liquid refrigerant may be pure water. Pure water refers to water from which weak electrolytes such as silicic acid and carbon dioxide and strong dielectrics have been removed to a certain extent. Therefore, pure water is not easy to conduct electricity and has good insulation properties. Using water as the liquid refrigerant can ensure the sanitation requirements of the hot water tank, and even if water leaks, it will not cause pollution. Moreover, water is not restricted by the safety level, so the filling amount of water is not restricted.

[0049] In other embodiments, the liquid refrigerant may also be other types of refrigerants.

[0050] The embodiment of the present application further provides a heat pump water heater, comprising a compressor, a heat exchanger, a heat pump pipeline and the hot water tank described in the embodiment of the present application, wherein the compressor, the heat exchanger and the condenser 22 are arranged on the heat pump pipeline.

[0051] The compressor is used to compress the refrigerant flowing through the condenser 22, and the heat exchanger is used to evaporate the refrigerant. The refrigerant circulates between the compressor, the heat exchanger and the condenser 22 through the heat pump pipeline.

[0052] See also Figure 2 and Figure 4 The evaporator 21 may be provided with a gas interface 22a and a liquid interface 22b, and the gas interface 22a and the liquid interface 22b are connected to the heat pump pipeline. The refrigerant from the heat pump pipeline enters the interior of the condenser 22 through the gas interface 22a of the evaporator 21 and the gas inlet of the condenser 22, and after heat exchange with the liquid refrigerant in the refrigerant evaporation chamber 21a, it flows back to the heat pump pipeline through the gas inlet of the condenser 22 and the gas interface 22a of the evaporator 21.

[0053] The hot water tank of the embodiment of the present application is provided with an inner tank component 10 and a heat exchange component 20. The inner tank component 10 has a water storage chamber 10a and a condensation chamber 10b separated from the water storage chamber 10a. The heat exchange component 20 includes an evaporator 21 having a refrigerant evaporation chamber 21a and a condenser 22 arranged in the refrigerant evaporation chamber 21a. The condenser 22 evaporates the liquid refrigerant into a gaseous refrigerant by exchanging heat with the liquid refrigerant in the refrigerant evaporation chamber 21a. After the gaseous refrigerant enters the condensation chamber 10b, it exchanges heat with the water in the water storage chamber 10a to heat the water in the water storage chamber 10a into hot water. Since the condenser 22 is arranged in the refrigerant evaporation chamber 21a, the condenser 22 can fully exchange heat with the liquid refrigerant in the refrigerant evaporation chamber 21a. After the liquid refrigerant absorbs heat and evaporates to form a gaseous refrigerant that enters the condensation chamber 10b, it can fully exchange heat with the water in the water storage chamber 10a. Therefore, the heat exchange efficiency of the heat exchange component 20 of the embodiment of the present application is relatively high, thereby improving the hot water making capacity of the hot water tank.

[0054] In one embodiment, please refer to Figure 1 , Figure 3 , Figure 5 and Figure 7 , the evaporator 21 can be located at the bottom of the inner tank assembly 10, and the condensing chamber 10b extends in a direction away from the evaporator 21. This arrangement can make the gaseous refrigerant in the condensing chamber 10b liquefy into liquid refrigerant, and then automatically flow back to the refrigerant evaporation chamber 21a under the action of gravity, thereby improving the heat exchange efficiency between the condenser 22 and the liquid refrigerant, and also improving the heat exchange efficiency between the gaseous refrigerant in the condensing chamber 10b and the water in the water storage chamber 10a.

[0055] In one embodiment, please refer to Figures 1 to 6 The inner tank assembly 10 may include an inner tank 11 having a water storage chamber 10a and a condensation element 12 having a condensation chamber 10b. The condensation element 12 is located in the water storage chamber 10a, that is, the condensation element 12 separates the condensation chamber 10b from the water storage chamber 10a, and the heat in the heat exchange process is transferred through the condensation element 12.

[0056] The type of the condensing element 12 is not limited. For example, the condensing element 12 may be a heat exchange tube.

[0057] The number of the condensation elements 12 may be one or more. However, compared with providing one condensation element 12 , providing a plurality of condensation elements 12 may improve the heat exchange efficiency of the heat exchange assembly 20 .

[0058] The condensing element 12 is located in the water storage chamber 10a, which can facilitate sufficient heat exchange between the gaseous refrigerant in the condensing element 12 and the water in the water storage chamber 10a, thereby further improving the heat exchange efficiency of the heat exchange component 20.

[0059] See also Figure 1 and Figure 2 The water storage chamber 10a may have a first area 10a1 and a second area 10a2 surrounding the outer periphery of the first area 10a1, and a plurality of condensation elements 12 may be arranged in the first area 10a1.

[0060] That is, the plurality of condensing elements 12 are located in a relatively inner region of the water storage chamber 10a.

[0061] Please continue reading Figure 2 , the plurality of condensation members 12 may be randomly distributed within the first region 10a1.

[0062] Random distribution means that the multiple condensation elements 12 are not arranged according to a certain rule in the first area 10a1, and each condensation element 12 can be set at any position in the first area 10a1.

[0063] In some other embodiments, please refer to Figure 4, multiple condensation elements 12 can also be arranged in a certain pattern in the first area 10a1. The purpose of setting multiple condensation elements 12 in the first area 10a1 is that after the gaseous refrigerant in each condensation element 12 exchanges heat with the water in the first area 10a1, the water in the first area 10a1 is heated into hot water, and the hot water rises along the height direction of the hot water tank. The water with a relatively low temperature in the second area 10a2 can enter the first area 10a1 and continue to exchange heat with the gaseous refrigerant in each condensation element 12, thereby forming a cycle, and further improving the heat exchange efficiency of the heat exchange component 20.

[0064] In one embodiment, please refer to Figure 1 and Figure 2 The side of the evaporator 21 close to the condensation member 12 may have a mounting portion 211 and an annular protrusion 212 surrounding the outer peripheral side of the mounting portion 211 and protruding into the water storage chamber 10a. The mounting portion 211 is provided with first through-holes 211a corresponding to the condensation members 12 one by one. The condensation members 12 are arranged on the mounting portion 211. The condensation chamber 10b of each condensation member 12 is connected with the refrigerant evaporation chamber 21a through the corresponding first through-holes 211a. That is to say, the gaseous refrigerant formed after the evaporation of the liquid refrigerant in the refrigerant evaporation chamber 21a can enter the corresponding condensation chamber 10b of the condensation member 12 through each first through-hole 211a, and the liquid refrigerant liquefied in the condensation chamber 10b of each condensation member 12 can also flow back to the refrigerant evaporation chamber 21a through the corresponding first through-holes 211a.

[0065] Exemplarily, each condensation element 12 can be located on the side of the corresponding first through-port 211a away from the refrigerant evaporation chamber 21a, and the condensation chamber 10b of each condensation element 12 is connected to the corresponding first through-port 211a, which is equivalent to the first through-port 211a being located between the condensation chamber 10b of the corresponding condensation element 12 and the refrigerant evaporation chamber 21a.

[0066] Exemplarily, each condensation element 12 may also be inserted into the corresponding first through-hole 211a, which is equivalent to the condensation chamber 10b of each condensation element 12 being directly connected to the refrigerant evaporation chamber 21a, and the first through-hole 211a is only used to position the corresponding condensation element 12.

[0067] The method of fixing the condensation member 12 on the mounting portion 211 is not limited. For example, the condensation member 12 can be welded to the mounting portion 211, for example, vacuum brazing can be used, and vacuum brazing can make the connection between the condensation member 12 and the mounting portion 211 have better connection strength. In another embodiment, the condensation member 12 can also be integrally formed with the mounting portion 211.

[0068] The purpose of the annular protrusion 212 surrounding the outer circumference of the mounting portion 211 is to enhance the structural strength of the evaporation element 21. In particular, for the evaporation element 21 disposed at the bottom of the water storage chamber 10a, since the water in the water storage chamber 10a exerts a certain pressure on the evaporation element 21, the annular protrusion 212 is disposed on the outer circumference of the mounting portion 211, so that the evaporation element 21 can have sufficient strength to withstand the water pressure and can provide sufficient support for the condensation element 12 disposed on the mounting portion 211.

[0069] In one embodiment, please refer to Figure 5 and Figure 6 The water storage chamber 10a may have a first area 10a1 and a second area 10a2 surrounding the outer periphery of the first area 10a1, and a plurality of condensing elements 12 may be disposed in the second area 10a2.

[0070] That is to say, the plurality of condensing elements 12 are located in the water storage chamber 10 a in an area close to the inner wall surface of the inner tank 11 .

[0071] For example, see Figure 5 and Figure 6 , multiple condensation elements 12 can be arranged at intervals along the circumference of the first area 10a1, which is equivalent to multiple condensation elements 12 surrounding the circumference of the first area 10a1. As a result, the gaseous refrigerant in each condensation element 12 can fully exchange heat with the water in the water storage chamber 10a, thereby further improving the heat exchange efficiency of the heat exchange component 20.

[0072] In other embodiments, the plurality of condensing elements 12 may also be randomly distributed in the second area 10a2 or arranged according to other rules. Figure 3 , Figure 4 and Figure 7 , the number of condensing elements 12 is multiple, and the evaporating element 21 may include a first mounting shell 213 and a second mounting shell 214, the first mounting shell 213 and the second mounting shell 214 are jointly arranged to form a refrigerant evaporation chamber 21a, and the first mounting shell 213 is located between the refrigerant evaporation chamber 21a and the condensation chamber 10b. The first mounting shell 213 has a second through-hole 213a corresponding to each condensing element 12, and multiple condensing elements 12 are arranged on the first mounting shell 213, and the condensation chamber 10b of each condensing element 12 is connected to the refrigerant evaporation chamber 21a through the corresponding second through-hole 213a.

[0073] The first mounting shell 213 can play a certain supporting role for the inner tank 11 and the condensing element 12 disposed on the first mounting shell 213 .

[0074] The manner in which the condensing chamber 10b of each condensing element 12 is connected to the refrigerant evaporation chamber 21a through the corresponding second through-hole 213a is the same as that described in the previous embodiment and will not be repeated here.

[0075] For example, see Figure 3 , Figure 4 and Figure 7 The first mounting shell 213 can be located at the bottom end of the inner tank assembly 10 along the height direction of the hot water tank, and together with the inner tank 11, a water storage chamber 10a is formed. To ensure the sealing between the inner tank 11 and the first mounting shell 213, the inner tank 11 and the first mounting shell 213 can be connected by vacuum brazing.

[0076] See also Figure 3 and Figure 4 The evaporation element 21 may also be provided with a plurality of reinforcing plates 215, which are arranged on the first mounting shell 213 and located in the water storage chamber 10a. There is a spacing area between two adjacent reinforcing plates 215, and the first mounting shell 213 is respectively provided with a second through hole 213a at each spacing area, which is equivalent to respectively providing a condensation element 12 between two adjacent reinforcing plates 215.

[0077] The number of reinforcing plates 215 is not limited. For example, Figure 4 Six reinforcing plates 215 are provided on the first mounting shell 213 as shown.

[0078] The reinforcing plates 215 may be connected together or separated from each other.

[0079] For example, see Figure 4 The first mounting shell 213 is circular, and a plurality of reinforcing plates 215 extend radially of the first mounting shell 213 and are evenly arranged circumferentially of the first mounting shell 213 . Meanwhile, the plurality of reinforcing plates 215 are connected at the center of the first mounting shell 213 .

[0080] Providing a plurality of reinforcing plates 215 can also enhance the structural strength of the first mounting shell 213 .

[0081] In one embodiment, please refer to Figure 7 and Figure 8 The inner tank assembly 10 may include an inner tank 11 and a partition 13 arranged in the inner tank 11, and the partition 13 separates a water storage chamber 10a and a condensation chamber 10b in the inner tank 11. That is, the partition 13 can be directly used to separate the water storage chamber 10a and the condensation chamber 10b, and the heat in the heat exchange process is transferred through the partition 13.

[0082] The water storage chamber 10a and the condensation chamber 10b are separated by the partition 13, which can not only reduce the number of parts of the hot water tank as much as possible, but also facilitate processing and manufacturing.

[0083] For example, see Figure 7 and Figure 8, the condensation chamber 10b can surround the outer peripheral side of the water storage chamber 10a. That is, the partition 13 is annular, and the condensation chamber 10b is formed between the partition 13 and the inner wall surface of the inner tank 11. At the same time, the partition 13 surrounds the water storage chamber 10a. This arrangement can greatly increase the heat exchange area, thereby further improving the heat exchange efficiency of the heat exchange assembly 20.

[0084] In one embodiment, please refer to Figure 3 The evaporating element 21 may have a vacuum pipeline 216 , and the refrigerant evaporating chamber 21 a is connected to the outside through the vacuum pipeline 216 .

[0085] Specifically, before the refrigerant evaporation chamber 21a is filled with liquid refrigerant, the non-condensable gas and other impurities in the refrigerant evaporation chamber 21a and the condensation chamber 10b need to be discharged to prevent the heat exchange of the heat exchange component from being affected. Therefore, by providing a vacuum pumping line 216, a vacuum pump can be connected to the vacuum pumping line 216 to facilitate the discharge of non-condensable gas and other impurities in the refrigerant evaporation chamber 21a and the condensation chamber 10b.

[0086] See also Figure 3 The vacuum pipe 216 may extend into the refrigerant evaporation chamber 21a. To prevent the liquid refrigerant from flowing into the vacuum pipe 216, the opening 216a of the vacuum pipe 216 in the refrigerant evaporation chamber 21a may be located above the liquid surface of the liquid refrigerant.

[0087] For further information, see Figure 3 A section of the vacuum pipeline 216 located in the condensing chamber 10 b may also extend in a direction close to the water storage chamber 10 a to further prevent liquid refrigerant from flowing into the vacuum pipeline 216 .

[0088] Also, see Figure 2 and Figure 4 The evaporating element 21 may also be provided with a discharge port 21c, and the refrigerant evaporating chamber 21a is connected to the outside through the discharge port 21c, which can facilitate the filling of liquid refrigerant into the refrigerant evaporating chamber 21a or the discharge of liquid refrigerant from the refrigerant evaporating chamber 21a.

[0089] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0090] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A hot water tank, characterized in that: include: An inner tank assembly, the inner tank assembly comprising a water storage cavity and a condensation cavity separated from the water storage cavity; A heat exchange component, the heat exchange component includes an evaporating element having a refrigerant evaporation chamber and a condenser arranged in the refrigerant evaporation chamber, the refrigerant evaporation chamber is connected to the condensation chamber, and the condenser exchanges heat with the liquid refrigerant in the refrigerant evaporation chamber, so that the liquid refrigerant evaporates and enters the condensation chamber.

2. The hot water tank according to claim 1, characterized in that: The evaporating element is located at the bottom of the inner container assembly, and the condensing chamber extends in a direction away from the evaporating element.

3. The hot water tank according to claim 1 or 2, characterized in that: The inner tank assembly comprises an inner tank having the water storage cavity and a condensing element having the condensing cavity, and the condensing element is located in the water storage cavity.

4. The hot water tank according to claim 3, characterized in that: The water storage chamber has a first area and a second area surrounding the first area. There are multiple condensation elements, and the multiple condensation elements are arranged in the first area.

5. The hot water tank according to claim 4, characterized in that: The plurality of condensation members are randomly distributed in the first area.

6. The hot water tank according to claim 4, characterized in that: The evaporator has a mounting portion and an annular protrusion surrounding the outer peripheral side of the mounting portion and protruding into the water storage cavity on one side of the evaporator close to the condensation portion. The mounting portion is provided with first through-holes corresponding to the condensation portions one by one. The condensation portions are arranged on the mounting portion, and the condensation cavity of each condensation portion is connected to the refrigerant evaporation cavity through the corresponding first through-holes.

7. The hot water tank according to claim 3, characterized in that: The water storage chamber has a first area and a second area surrounding the outer periphery of the first area. There are multiple condensing elements, and the multiple condensing elements are arranged in the second area.

8. The hot water tank according to claim 7, characterized in that: A plurality of condensing members are arranged at intervals along a circumference of the first region.

9. The hot water tank according to claim 3, characterized in that: There are multiple condensing parts, and the evaporating part includes a first mounting shell and a second mounting shell which are jointly arranged to form the refrigerant evaporating chamber. The first mounting shell is located between the refrigerant evaporating chamber and the condensing chamber, and has a second through-hole corresponding to the condensing parts one by one. Multiple condensing parts are arranged on the first mounting shell, and the condensing chamber of each condensing part is connected to the refrigerant evaporating chamber through the corresponding second through-hole.

10. The hot water tank according to claim 9, characterized in that The evaporating element further comprises a plurality of reinforcing plates arranged on the first mounting shell and located in the water storage chamber, a spacing area is provided between two adjacent reinforcing plates, and the through openings are respectively provided at locations of the first mounting shell located in each of the spacing areas.

11. The hot water tank according to claim 3, characterized in that: The condensing element is a heat exchange tube.

12. The hot water tank according to claim 1 or 2, characterized in that: The inner tank assembly comprises an inner tank and a partition arranged in the inner tank, and the partition separates the water storage chamber and the condensation chamber in the inner tank.

13. The hot water tank according to claim 12, characterized in that: The condensation chamber surrounds the outer peripheral side of the water storage chamber.

14. The hot water tank according to claim 1 or 2, characterized in that: The evaporating element has a vacuum pipeline, and the refrigerant evaporating chamber is connected with the outside through the vacuum pipeline.

15. The hot water tank according to claim 1 or 2, characterized in that: The liquid refrigerant is water.

16. The hot water tank according to claim 1 or 2, characterized in that: The condenser is a microchannel condenser or a small channel condenser.

17. A heat pump water heater, characterized in that: It comprises a compressor, a heat exchanger, a heat pump pipeline and a hot water tank according to any one of claims 1 to 16, wherein the compressor, the heat exchanger and the condenser are arranged on the heat pump pipeline.

Images