Heat pump water heater

Abstract

The utility model discloses a heat-pump water heater, which relates to the technical field of water heaters, and comprises at least one inner container, at least one heat exchanger and at least one heat exchanger, the mounting module comprises a mounting piece and a connecting piece; the compression unit, the first heat exchange unit, the throttling unit and the second heat exchange unit are arranged on the mounting part, the second heat exchange unit is provided with a first heat exchange flow channel and a second heat exchange flow channel, and fluid flowing through the first heat exchange flow channel can exchange heat with fluid flowing through the second heat exchange flow channel; the compression unit, the first heat exchange unit, the throttling unit and the first heat exchange runner are communicated to form a first circulating runner for a refrigerant to flow; and the second heat exchange flow channel and the inner container can form a second circulating flow channel for water to flow. The problem that a heat pump water heater is inconvenient to maintain can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a heat pump water heater. Background Art

[0002] The water heater uses an electric heating rod to heat the water in the inner tank, which is relatively power-consuming and has a low energy efficiency ratio. In order to improve the energy efficiency ratio of the water heater, some water heaters currently use heat pumps to heat the water in the inner tank. The inner tank for storing water and the compression unit and the heat exchange unit for exchanging heat with the air in conventional heat pump water heaters are split. The overall volume of all parts of the heat pump water heater is large, and it is inconvenient to install in many places and areas.

[0003] For this reason, some heat pump water heaters integrate the compression unit, the heat exchange unit for exchanging heat with the air and other components with the inner tank in a shell. This method can miniaturize the heat pump water heater so that it can be installed in a wider range of places. However, since the compression unit, the heat exchange unit and other components are connected to form a circulation channel for the flow of refrigerant, it is very inconvenient once the refrigerant-related components in the heat pump water heater fail or are damaged and need to be repaired or replaced. This is because the connection between the components through which the refrigerant flows and the upstream and downstream components through which the refrigerant flows is generally welded to ensure that the refrigerant does not leak, which makes it difficult to disassemble the components for repair or replacement. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present utility model is to provide a heat pump water heater, which can solve the problem that the heat pump water heater is inconvenient to repair.

[0005] The specific technical solution of the embodiment of the utility model is:

[0006] A heat pump water heater, comprising:

[0007] At least one liner;

[0008] An installation module, the installation module includes: a mounting part; a compression unit, a first heat exchange unit, a throttling unit, and a second heat exchange unit arranged on the mounting part, the second heat exchange unit having a first heat exchange channel and a second heat exchange channel, the fluid flowing through the first heat exchange channel can exchange heat with the fluid flowing through the second heat exchange channel, the compression unit, the first heat exchange unit, the throttling unit and the first heat exchange channel are connected to form a first circulation channel for the flow of refrigerant; the second heat exchange channel can form a second circulation channel for the flow of water with the inner tank.

[0009] Preferably, the first heat exchange unit is used to absorb heat in the air; the installation module also includes:

[0010] A fan is arranged on the mounting member, and the fan is used to accelerate the air flow at the first heat exchange unit.

[0011] Preferably, the fan rotates around its own axis;

[0012] The first heat exchange unit comprises: a wound heat exchange tube, wherein the heat exchange tube is arranged in at least two layers in the axial direction of the fan.

[0013] Preferably, the heat pump water heater further comprises:

[0014] A pump unit, wherein the pump unit, the second heat exchange flow channel and the inner tank form the second circulation flow channel for water flow.

[0015] Preferably, in the second circulation channel,

[0016] The connecting pipe between one end of the second heat exchange channel and the inner tank has a quick connection mechanism or is connected to the corresponding equipment in a detachable connection manner;

[0017] The connecting pipe between the other end of the second heat exchange flow channel and the inner tank has a quick connection mechanism or is connected to the corresponding equipment in a detachable connection manner.

[0018] Preferably, the connecting pipe between one end of the pump unit and the inner tank has a quick connection mechanism or the connecting pipe between one end of the pump unit and the inner tank is connected to the corresponding equipment in a detachable connection manner;

[0019] and / or,

[0020] The connecting pipe between the other end of the pump unit and the second heat exchange channel has a quick connection mechanism, or the connecting pipe between the other end of the pump unit and the inner tank is connected to the corresponding equipment in a detachable connection manner.

[0021] Preferably, the quick connection mechanism comprises a quick connector unit connected to the connection pipe;

[0022] or,

[0023] The connecting tube includes a first section of the connecting tube and a second section of the connecting tube, and the quick connecting mechanism includes: a first end located at the first section of the connecting tube, a second end located at the second section of the connecting tube, a sealing member, and a limiting member, the first end can be inserted into the second end, and the sealing member is provided between the outer side wall of the first end and the inner side wall of the second end, and the limiting member is used to keep the first end inserted into the second end.

[0024] Preferably, the outer side wall of the first end portion has a first outer edge protruding outwardly in the radial direction, and the outer side wall of the second end portion has a second outer edge protruding outwardly in the radial direction, and the stopper abuts against the first outer edge and the second outer edge in the axial direction, respectively, so that the first end portion remains inserted into the second end portion;

[0025] or,

[0026] The side wall of the second end has a notch, and the outer side wall of the first end has a first outer edge protruding outward in the radial direction; part of the limiting member is inserted into the notch and presses against the first outer edge in the axial direction to keep the first end inserted into the second end.

[0027] Preferably, the heat pump water heater comprises:

[0028] case;

[0029] The inner container and the mounting module are arranged in the shell, the inner container extends along a first direction and has two opposite ends in the first direction, and the mounting module is located at one end of the inner container.

[0030] Preferably, the heat pump water heater comprises:

[0031] Fixed bracket,

[0032] The fixing bracket is arranged in the shell and is located at one end of the inner container which is the same as the installation module. The fixing bracket cooperates with the shell to achieve fixation. The installation module is installed on the fixing bracket.

[0033] Preferably, the heat pump water heater comprises:

[0034] Fixed bracket,

[0035] The fixing bracket is arranged in the shell and is located at the same end of the inner liner as the mounting module. The fixing bracket is connected to the inner liner to achieve fixation; the mounting module is mounted on the fixing bracket.

[0036] Preferably, the mounting module and the fixing bracket are detachably connected.

[0037] Preferably, the fixing bracket has a hollow structure, and the hollow structure corresponds to the component installation port of the inner liner.

[0038] Preferably, the component mounting port includes at least one of the following: an electric heating rod mounting port and an anode unit mounting port.

[0039] Preferably, a connecting piece with an opening is welded on the outer wall of the inner tank, and a heat insulating piece is provided at the opening of the connecting piece, and the heat insulating piece has a first heat insulating part and a second heat insulating part; the connecting piece is located between the first heat insulating part and the second heat insulating part; the fixing bracket is installed in cooperation with the heat insulating piece through a fixing piece, and the fixing piece passes through the fixing bracket, the first heat insulating part, the opening, and the second heat insulating part in sequence and then is screwed into a nut.

[0040] Preferably, the mounting module is connected to the inner tank or the shell to achieve fixation.

[0041] Preferably, the mounting module is detachably connected to the inner container or the shell.

[0042] Preferably, the pump unit is arranged on the mounting member.

[0043] Preferably, the heat pump water heater comprises:

[0044] A pump unit is located in a gap between the mounting module and an inner side wall of the housing.

[0045] Preferably, the heat pump water heater comprises:

[0046] A control panel is located in a gap between the mounting module and an inner side wall of the housing.

[0047] Preferably, there are two inner containers, which are arranged in a vertical direction; the radial cross section of the shell is generally elliptical;

[0048] The pump unit or the control panel is located at a gap between the upper end or the lower end of the mounting module and the inner side wall of the housing.

[0049] Preferably, a water receiving portion is formed on the fixing bracket, and the water receiving portion is used to collect condensed water dripping from the surface of the first heat exchange unit.

[0050] Preferably, the heat pump water heater comprises: a pressure relief valve connected to the drainage end of the inner tank; a drainage pipe connected to the pressure relief valve, and the water receiving portion is connected to the drainage pipe.

[0051] Preferably, the refrigerant is R290 refrigerant.

[0052] Preferably, the content volume of the first heat exchange channel of the first heat exchange unit and the second heat exchange unit is less than 500 ml; and the usage amount of the refrigerant is less than 90 g.

[0053] Preferably, the compression unit displacement is 1.0 cm 3 / REV-3.5cm 3 / REV, the diameter of the compression unit is less than 80 mm.

[0054] Preferably, the air volume of the fan is 15m 3 / h-120m 3 / h, the fan is an axial flow fan, and the fan is a DC fan.

[0055] Preferably, the size of the pump unit is less than φ60 mm×60 mm, and the power of the pump unit is less than or equal to 15 W.

[0056] Preferably, the second heat exchange unit is a plate heat exchanger.

[0057] Preferably, the size of the second heat exchange unit, which is the product of length, width and thickness, is less than or equal to 140mm×70mm×50mm; the heating capacity of the second heat exchange unit can reach 450W.

[0058] Preferably, the compression unit, the throttling unit, and the second heat exchange unit are arranged in a straight line;

[0059] The first heat exchange unit is arranged in parallel with the straight line.

[0060] Preferably, a fan is arranged on a side of the first heat exchange unit facing away from the inner tank, and there are two fans, which are arranged in an array along the straight line direction.

[0061] Preferably, the installation module further includes:

[0062] A fan disposed on the mounting member, the fan being used to accelerate air flow at the first heat exchange unit;

[0063] The shell includes: a shell side wall and a shell end cover, and the shell end cover is provided with a gas inlet and a gas outlet. Under the action of the fan, air flows into the shell from the gas inlet and flows out from the gas outlet after passing through the first heat exchange unit.

[0064] Preferably, a guide structure is provided between the gas inlet of the shell end cover and the inlet of the fan, one end of the guide structure is connected to or abuts against the gas inlet of the shell end cover, and the other end of the guide structure is connected to or abuts against the inlet of the fan.

[0065] Preferably, the dimension of the installation module (length multiplied by width) is less than or equal to 36 cm×36 cm.

[0066] Preferably, a heat-insulating layer is pasted on one end of the inner liner close to the mounting module, and the heat-insulating layer has a notch corresponding to the component mounting port of the inner liner.

[0067] Preferably, the heat pump water heater further comprises:

[0068] A heat-insulating component is located between one end of the inner liner close to the mounting module and the mounting module; in the axial direction of the inner liner, the heat-insulating component at least covers a position corresponding to the notch.

[0069] The technical solution of the utility model has the following significant beneficial effects:

[0070] 1. The water in the inner tank of the heat pump water heater can continuously flow through the second heat exchange channel through the second circulation channel, thereby exchanging heat with the refrigerant flowing through the first heat exchange channel to achieve the purpose of heating, so as to achieve the heating of the water in the inner tank. After the refrigerant compressed by the compression unit flows through the first heat exchange channel to exchange heat and cool the water in the second circulation channel, it is throttled and cooled by the throttling unit, and then exchanges heat with the air when flowing through the first heat exchange channel to achieve the purpose of heat absorption, and finally returns to the compression unit. The above process can achieve the heating of the water in the inner tank.

[0071] 2. Since all the components constituting the first circulation channel through which the refrigerant flows are on the mounting parts, when a component through which the refrigerant flows fails, the mounting module can be directly removed from the heat pump water heater for repair or directly replaced. This avoids the problem that the components constituting the first circulation channel through which the refrigerant flows are inconvenient to be removed individually for repair or replacement.

[0072] 3. The heat pump water heater in this application has the compression unit, pump unit, second heat exchange unit and other components miniaturized, and the first heat exchange unit adopts the form of a multi-layer arrangement of heat exchange tubes to reduce the area of ​​the first heat exchange unit in the width and thickness direction of the heat pump water heater, which can reduce the number of fans used. Through the above-mentioned methods and the arrangement of various components on the installation module, the volume of the entire installation module is miniaturized, especially in the width and thickness direction of the heat pump water heater. Furthermore, the miniaturized installation module can be conveniently set at one end of the inner tank, not only can it be installed in the shell of heat pump water heaters of different specifications, but also can achieve the purpose of basically not increasing or slightly increasing the length of the shell of the heat pump water heater.

[0073] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0075] Figure 1 It is a three-dimensional structural diagram of a heat pump water heater in an embodiment of the utility model;

[0076] Figure 2 It is a side view of the heat pump water heater in the first embodiment of the utility model;

[0077] Figure 3 It is a side view of the heat pump water heater in the second embodiment of the utility model;

[0078] Figure 4a This is a schematic diagram of the structure of the housing in the embodiment of the utility model;

[0079] Figure 4b This is a schematic diagram of the structure of the housing end cover in the embodiment of the utility model;

[0080] Figure 5a This is a three-dimensional structural diagram of the quick connection mechanism in the first embodiment of the utility model;

[0081] Figure 5b It is a cross-sectional view of the quick connection mechanism in the first embodiment of the utility model;

[0082] Figure 6 This is a structural diagram of the installation module and the fixing bracket in the embodiment of the utility model;

[0083] Figure 7 This is a schematic structural diagram of an inner container connected with a connecting piece in an embodiment of the utility model;

[0084] Figure 8 This is a schematic diagram of the structure of the connection between the connecting member and the fixed bracket in the embodiment of the utility model;

[0085] Fig. 9 This is a schematic diagram of the structure of the connection between the connecting member and the fixed bracket in the embodiment of the utility model;

[0086] Fig.10 It is a partially cutaway perspective schematic diagram of a heat pump water heater with a heat insulation layer and a heat insulation member in an embodiment of the utility model;

[0087] Fig.11It is a partial cross-sectional front view of a heat pump water heater with a thermal insulation layer and a thermal insulation component in an embodiment of the utility model.

[0088] Reference numerals in the above drawings:

[0089] 1. Inner tank; 11. Component installation port; 12. Connector; 121. Opening; 13. Insulation layer; 2. Installation module; 21. Installation part; 22. Compression unit; 23. First heat exchange unit; 24. Throttling unit; 25. Second heat exchange unit; 26. Fan; 3. Pump unit; 4. Quick connection mechanism; 41. First end; 411. First outer edge; 42. Second end; 421. Second outer edge; 43. Sealing member; 44. Limiting member; 5. Shell; 51. Shell side wall; 52. Shell end cover; 521. Gas inlet; 522. Gas outlet; 523. Flow guide structure; 6. Fixed bracket; 61. Hollow structure; 62. Water receiving part; 7. Insulation member; 71. First insulation member; 72. Second insulation member; 81. Fixing member; 82. Nut; 9. Control panel; 10. Insulation member. DETAILED DESCRIPTION

[0090] In combination with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0091] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0092] In order to solve the problem that heat pump water heaters are inconvenient to repair, a heat pump water heater is proposed in this application. Figure 1 : is a three-dimensional structural diagram of a heat pump water heater in an embodiment of the utility model, as shown in Figure 1 As shown, the heat pump water heater may include: at least one inner tank 1 and a mounting module 2 .

[0093] The inner tank 1 is used to store water that needs to be heated, and stores the heated water for use by users.

[0094] Figure 2 This is a side view of a heat pump water heater in a first embodiment of the utility model. Figure 3 FIG. 1 is a side view of a heat pump water heater in a second embodiment of the utility model. Figures 1 to 3 As shown, the installation module 2 may include: a mounting member 21; a compression unit 22, a first heat exchange unit 23, a throttling unit 24, and a second heat exchange unit 25 arranged on the mounting member 21. The mounting member 21 is used for the compression unit 22, the first heat exchange unit 23, the throttling unit 24, and the second heat exchange unit 25 to be installed on itself, so as to achieve direct or indirect fixation of the above components. By installing the compression unit 22, the first heat exchange unit 23, the throttling unit 24, and the second heat exchange unit 25 on the mounting member 21, the compression unit 22, the first heat exchange unit 23, the throttling unit 24, and the second heat exchange unit 25 are installed in coordination on the heat pump water heater.

[0095] The second heat exchange unit 25 has a first heat exchange channel and a second heat exchange channel, and the fluid flowing through the first heat exchange channel can exchange heat with the fluid flowing through the second heat exchange channel. The compression unit 22, the first heat exchange unit 23, the throttling unit 24 and the first heat exchange channel are connected to form a first circulation channel for the flow of refrigerant. The second heat exchange channel can form a second circulation channel for the flow of water with the inner tank 1.

[0096] The water in the inner tank 1 of the above-mentioned heat pump water heater can continuously flow through the second heat exchange channel through the second circulation channel, thereby exchanging heat with the refrigerant flowing through the first heat exchange channel to achieve the purpose of heating, so as to achieve the heating of the water in the inner tank 1. After the refrigerant compressed by the compression unit 22 flows through the first heat exchange channel and exchanges heat with the water in the second circulation channel for cooling, it is throttled and cooled by the throttling unit 24, and then exchanges heat with the air when flowing through the first heat exchange channel to achieve the purpose of heat absorption, and finally returns to the compression unit 22. The above process can achieve the heating of the water in the inner tank 1. Since all the components constituting the first circulation channel through which the refrigerant flows are on the mounting member 21, when the components through which the refrigerant flows fail, the mounting module 2 can be directly removed from the heat pump water heater for maintenance or directly replaced, so that the problem that the components constituting the first circulation channel through which the refrigerant flows are inconvenient to be disassembled separately for maintenance or replacement can be avoided.

[0097] Since the first heat exchange unit 23 is used to absorb heat from the air, in order to increase the heat exchange rate between the first heat exchange unit 23 and the air, the installation module 2 may include: a fan 26 arranged on the installation member 21, and the fan 26 is used to accelerate the air flow at the first heat exchange unit 23.

[0098] In some embodiments, the fan 26 rotates around its own axis. The first heat exchange unit 23 may include: a wound heat exchange tube. Fig.10 It is a partially cutaway perspective diagram of a heat pump water heater with a heat insulation layer and a heat insulation member in an embodiment of the utility model. Fig.11 FIG. 1 is a partial cross-sectional front view of a heat pump water heater with a heat insulation layer and a heat insulation member according to an embodiment of the present utility model. Fig.10 and Fig.11 As shown, the heat exchange tubes are arranged in at least two layers in the axial direction of the fan 26. In the above manner, the number of fans 26 used can be effectively reduced, thereby reducing the volume of the installation module 2 or the area of ​​the installation module 2 in the radial plane direction of the fan 26. In a specific embodiment, a fan 26 with a substantially square radial plane can be used, and the number of fans 26 can be two. The two fans 26 are arranged side by side, and further can be arranged close to each other, so as to ensure that the air in each area of ​​the heat exchange tube can be accelerated.

[0099] In some embodiments, the air volume of the fan 26 can be 15m 3 / h-120m 3 / h can meet the heat exchange demand of the first heat exchange unit 23. The fan 26 can be an axial flow fan 26, and the fan 26 is a DC fan.

[0100] In some embodiments, in order to allow the water in the inner tank 1 to circulate and flow into the second heat exchange flow channel, as shown in FIG. Figures 1 to 3As shown, the heat pump water heater may include: a pump unit 3. The pump unit 3, the second heat exchange flow channel and the inner tank 1 form a second circulation flow channel for water flow. Under the action of the pump unit 3, the water in the inner tank 1 can be driven to flow into the second heat exchange flow channel for heating, and then flow back to the inner tank 1. Such a cycle eventually causes the water in the inner tank 1 to continuously heat up.

[0101] In some embodiments, the pump unit 3 may be disposed on the mounting member 21 .

[0102] In other feasible implementations, the pump unit 3 may also be directly placed in the housing 5. For example, Figures 1 to 3 As shown, the pump unit 3 can be located in the gap between the mounting module 2 and the inner side wall of the housing 5. In order to facilitate the installation of the pump unit 3 in the gap between the mounting module 2 and the inner side wall of the housing 5, the size (diameter multiplied by length) of the pump unit 3 can be less than φ60mm×60mm, and the power of the pump unit 3 is less than or equal to 15W. Here, the diameter of the pump unit 3 is the diameter of the main part of the pump unit 3, excluding the bracket and related auxiliary parts for connection and fixing.

[0103] In some embodiments, Figures 1 to 3 As shown, the heat pump water heater may include: a control panel 9. The control panel 9 may be located in the gap between the mounting module 2 and the inner side wall of the housing 5. The structure of the heat pump water heater may be optimized in the above manner, so that the space utilization rate in the housing 5 is higher and the volume of the heat pump water heater is smaller.

[0104] As feasible, Figure 3 As shown, when there is only one inner tank 1, the radial cross-section of the shell 5 is generally circular, the cross-section of the mounting module 2 in the radial direction of the shell 5 can be generally rectangular or square, and the pump unit 3 and the control panel 9 can be respectively located in two of the four larger gaps between the mounting module 2 and the inner wall of the shell 5.

[0105] As feasible, Figure 1 and Figure 2 As shown, when there are two inner tanks 1 and the two inner tanks 1 are arranged in a vertical direction, the radial cross-section of the housing 5 is generally elliptical. The pump unit 3 or the control panel 9 can be located in the gap between the upper end or the lower end of the mounting module 2 and the inner side wall of the housing 5. When the cross-section of the mounting module 2 in the radial direction of the housing 5 can be generally rectangular or square, the gap volume between the upper end and the lower end of the mounting module 2 and the inner side wall of the housing 5 is relatively large, and this part of the gap can be effectively utilized to accommodate the pump unit 3 and / or the control panel 9. The left and right ends of the mounting module 2 can be basically close to the inner side wall of the housing 5, so as to reduce the volume of the housing 5 as much as possible.

[0106] In some embodiments, in order to improve the heat exchange rate between the refrigerant flowing through the first heat exchange channel and the water flowing through the second circulation channel in the second heat exchange unit 25, the second heat exchange unit 25 can be a plate heat exchanger. In addition, the selection of a plate heat exchanger can reduce the volume of the entire second heat exchange unit 25, thereby making the volume of the installation module 2 smaller, especially the size of the installation module 2 in the length direction of the heat pump water heater smaller, so that the size of the entire shell 5 in the length direction is smaller after the installation module 2 is set at one end of the inner tank 1. In a specific embodiment, the length multiplied by the width multiplied by the thickness of the second heat exchange unit 25 is less than or equal to 140mm×70mm×50mm. Under the above parameter specifications, the heating capacity of the second heat exchange unit 25 can reach 450W. It should be noted that the length, width, and thickness of the second heat exchange unit 25 are only for the second heat exchange unit 25, and are different from the length, width, and thickness of the heat pump water heater. The length direction of the second heat exchange unit 25 is the width direction of the heat pump water heater, the width direction of the second heat exchange unit 25 is the thickness direction of the heat pump water heater, and the thickness direction of the second heat exchange unit 25 is the length direction of the heat pump water heater.

[0107] In order to facilitate the disconnection of the connecting pipe between the installation module 2 and the inner tank 1 when the installation module 2 is removed from the heat pump water heater, in the second circulation channel, the connecting pipe between one end of the second heat exchange channel and the inner tank 1 has a quick connection mechanism 4 or is connected to the corresponding equipment in a detachable connection manner; the connecting pipe between the other end of the second heat exchange channel and the inner tank 1 has a quick connection mechanism 4 or is connected to the corresponding equipment in a detachable connection manner.

[0108] In the above embodiment, the installation module 2 can be separated from the inner container 1 together with the pump unit 3, so as to be disassembled. The installation module 2 can also be separated from the inner container 1 by itself, so as to be disassembled, and the pump unit 3 is still connected to the inner container 1.

[0109] In some embodiments, the connecting pipe between one end of the pump unit 3 and the inner liner 1 has a quick connection mechanism 4 or the connecting pipe between one end of the pump unit 3 and the inner liner 1 is connected to the corresponding device in a detachable connection manner. Here, the device corresponding to the connecting pipe refers to the pump unit 3 or the inner liner 1 connected at both ends of the connecting pipe. In this embodiment, the mounting module 2 can be separated from the inner liner 1 together with the pump unit 3.

[0110] In some embodiments, the connecting pipe between the other end of the pump unit 3 and the second heat exchange flow channel has a quick connection mechanism 4 or the connecting pipe between the other end of the pump unit 3 and the inner tank 1 is connected to the corresponding equipment in a detachable connection manner. Here, the equipment corresponding to the connecting pipe refers to the pump unit 3 or the second heat exchange flow channel connected at both ends of the connecting pipe. In this embodiment, the mounting module 2 is only separated from the inner tank 1 by itself, so that it can be disassembled, and the pump unit 3 is still connected to the inner tank 1.

[0111] In other embodiments, when both ends of the pump unit 3 have a quick connection mechanism 4 or are connected to the corresponding equipment in a detachable connection manner, the mounting module 2 is separated from the inner liner 1 and removed. It is possible to choose whether to remove the pump unit 3 together with the mounting module 2 or to keep it connected to the inner liner 1 according to any needs, and it is also possible to choose to remove the pump unit 3 separately.

[0112] In some embodiments, the quick connection mechanism 4 may include a quick connector unit connected to the connecting pipe. The quick connector unit may be any commonly used quick connector unit in the prior art for realizing quick connection of two sections of connecting pipes, which may include a male connector and a female connector, and the two may be quickly connected.

[0113] In some embodiments, the connecting tube includes a first section of connecting tube and a second section of connecting tube. Figure 5a This is a three-dimensional structural diagram of the quick connection mechanism in the first embodiment of the utility model. Figure 5b FIG. 2 is a cross-sectional view of the quick connection mechanism in the first embodiment of the utility model. Figure 5a and Figure 5b As shown, the quick connection mechanism 4 may include: a first end 41 located at the first section of the connecting tube, a second end 42 located at the second section of the connecting tube, a seal 43, and a limiter 44. The first end 41 can be inserted into the second end 42, and a seal 43 is provided between the outer wall of the first end 41 and the inner wall of the second end 42. The limiter 44 is used to keep the first end 41 inserted into the second end 42.

[0114] For example, in a specific embodiment, Figure 5a and Figure 5b As shown, the outer wall of the first end 41 has a first outer edge 411 protruding outward in the radial direction, and the outer wall of the second end 42 has a second outer edge 421 protruding outward in the radial direction. The limiting member 44 respectively abuts against the first outer edge 411 and the second outer edge 421 in the axial direction to keep the first end 41 inserted into the second end 42.

[0115] For another example, in another specific embodiment, the side wall of the second end 42 has a notch, and the outer side wall of the first end 41 has a first outer edge 411 protruding outward in the radial direction; a portion of the stopper 44 is inserted into the notch and abuts against the first outer edge 411 in the axial direction, so that the first end 41 remains inserted into the second end 42. Of course, there may be other specific structures to enable the stopper 44 to keep the first end 41 inserted into the second end 42 and maintain sealing.

[0116] In order to optimize the distribution of various components in the heat pump water heater, so that the overall volume of the heat pump water heater is smaller, such as Figure 1 As shown, the heat pump water heater may include: a shell 5; an inner tank 1 and a mounting module 2 arranged in the shell 5, the inner tank 1 extends along a first direction and has two opposite ends in the first direction, and the mounting module 2 is located at one end of the inner tank 1. The overall extension direction of the mounting module 2 is the same as the radial plane direction of the shell 5 or the inner tank 1, so that the length of the heat pump water heater can be minimized and the space utilization at the end of the inner tank 1 in the shell 5 can be improved as much as possible. The length of the heat pump water heater is the distance in the axial direction of the heat pump water heater. The width of the heat pump water heater is the distance in the vertical direction. The thickness of the heat pump water heater is the distance in the direction perpendicular to the axial direction and the vertical direction.

[0117] In some embodiments, Figure 6 FIG. 1 is a schematic diagram of the structure of the installation module and the fixing bracket in the embodiment of the utility model. Figures 1 to 3 , Figure 6 As shown, the heat pump water heater may include: a fixing bracket 6. The fixing bracket 6 is used to realize that the mounting module 2 can be fixedly mounted in the housing 5. The fixing bracket 6 can be arranged in the housing 5 and located at one end of the inner tank 1 which is the same as the mounting module 2.

[0118] As a feasible method, the fixing bracket 6 can be matched with the shell 5 to achieve fixation. For example, the shape of the fixing bracket 6 matches the shape of the inner side wall of the shell 5, so as to match and achieve fixation. For example, the inner side wall of the end of the shell 5 can have an inward curling edge, and the end of the fixing bracket 6 can be snapped into the curling edge, so as to achieve the limited fixation of the fixing bracket 6 in the axial direction. The fixing bracket 6 can also be directly connected to the shell 5 through a fixing member 81 or through a snap connection and the like to achieve fixation between the two. The mounting module 2 is mounted on the fixing bracket 6 to achieve fixed installation.

[0119] In other possible implementations, Figure 7 This is a schematic diagram of the structure of an inner container connected with a connecting piece in an embodiment of the utility model. Figure 8 Schematic diagram of the structure of the connection between the connecting member and the fixed bracket in the embodiment of the utility model, as shown in FIG. Figure 7 and Figure 8 As shown, the fixing bracket 6 can be directly connected to the inner liner 1 to achieve fixation. As feasible, a connecting piece 12 can be welded on the outer wall of the inner liner 1, and the fixing bracket 6 can be connected to the connecting piece 12 through a fixing piece 81, for example, the fixing piece 81 can include a bolt or the like.

[0120] In order to reduce the rate at which the heat of the hot water in the inner tank 1 is transferred to the fixing bracket 6 through the inner tank 1 and the connecting member 12, Fig. 9 Schematic diagram of the structure of the connection between the connecting member and the fixed bracket in the embodiment of the utility model, as shown in Fig. 9 As shown, the connector 12 and the fixed bracket 6 are connected via the thermal insulation 7. That is to say, there is no direct contact between the connector 12 and the fixed bracket 6 and the fixing member 81. In some embodiments, a connector 12 having an opening 121 is welded on the outer wall of the inner tank 1, and a thermal insulation member 7 is provided at the opening 121 of the connector 12, and the thermal insulation member 7 has a first thermal insulation portion 71 and a second thermal insulation portion 72; the connector 12 is located between the first thermal insulation portion 71 and the second thermal insulation portion 72; the fixed bracket 6 is installed in coordination with the thermal insulation member 7 via the fixing member 81, and the fixing member 81 passes through the fixed bracket 6, the first thermal insulation portion 71, the opening 121, and the second thermal insulation portion 72 in sequence and then is screwed into the nut 82.

[0121] In the above-mentioned embodiments, the mounting module 2 can be detachably connected to the fixing bracket 6. For example, the mounting member 21 in the mounting module 2 can be detachably connected to the fixing bracket 6. For example, the mounting member 21 can be fixedly connected to the fixing bracket 6 by screws, thereby achieving the purpose of detachable connection. In the above-mentioned manner, the mounting module 2 can be easily removed from the heat pump water heater for easy maintenance or replacement.

[0122] In some embodiments, the fixed bracket 6 may have a hollow structure 61, and the hollow structure 61 corresponds to the component installation port 11 of the inner tank 1. For example, the component installation port 11 may include at least one of the following: an electric heating rod installation port, an anode unit installation port, etc. When the electric heating rod or the anode unit needs to be replaced or repaired, it is only necessary to remove the installation module 2 from the fixed bracket 6. Due to the hollow structure 61 on the fixed bracket 6, the component installation port 11 can be exposed through the hollow structure 61, so that maintenance personnel can easily replace or repair the electric heating rod or the anode unit through the hollow structure 61 without disassembling the fixed bracket 6, which greatly improves work efficiency.

[0123] In some embodiments, the mounting module 2 can be connected to the inner tank 1 or the shell 5 to achieve fixation. Further, the mounting module 2 and the inner tank 1 or the shell 5 can be detachably connected, so that the mounting module 2 can be removed from the heat pump water heater for maintenance or replacement. For example, the mounting member 21 in the mounting module 2 can be directly connected to the inner tank 1 or the shell 5 in a detachable manner to achieve fixation. The detachable connection between the mounting member 21 and the inner tank 1 can be achieved by connecting the mounting member 21 to the connecting member 12 welded on the inner tank 1 through a fixing member 81. Further, a heat insulating member 7 can be provided between the mounting member 21 and the connecting member 12 welded on the inner tank 1, so as to reduce the rate at which the heat of the hot water in the inner tank 1 diffuses outward. Of course, in other feasible embodiments, the mounting member 21 can also be connected to the inner tank 1 or the shell 5 in a detachable manner such as snap-on, plug-in, etc. to achieve fixation.

[0124] In some embodiments, in order to prevent the condensed water formed on the surface of the first heat exchange unit 23 from dripping into the shell 5 and not being collected in time, Figures 1 to 3 , Figure 6 As shown, a water receiving portion 62 may be formed on the fixed bracket 6, and the water receiving portion 62 is used to collect condensed water formed on the surface of the first heat exchange unit 23. The water receiving portion 62 may be located directly below the first heat exchange unit 23 to receive the condensed water dripping from the surface of the first heat exchange unit 23.

[0125] In some embodiments, the heat pump water heater may include: a pressure relief valve connected to the drainage end of the inner tank 1; and a drainage pipe connected to the pressure relief valve. In order to discharge the condensed water in the water receiving portion 62, the water receiving portion 62 is connected to the drainage pipe.

[0126] In some embodiments, the refrigerant used in the first circulation flow channel of the heat pump water heater can be R290 refrigerant. Under the same quality, the heating capacity of R290 refrigerant is relatively larger. Therefore, on the basis of the same heating power, the usage of R290 refrigerant is smaller, and the corresponding specifications of the compression unit 22, the first heat exchange unit 23, the second heat exchange unit 25 and other components can also be relatively smaller, so that the volume of the installation module 2 can be further reduced, and then the volume of the shell 5 can be reduced, especially the length of the shell 5. Of course, in other feasible embodiments, other types of refrigerants in the prior art can also be used, such as R134A refrigerant.

[0127] When the refrigerant is R290, the volume of the first heat exchange channel of the first heat exchange unit 23 and the second heat exchange unit 25 can be less than 500 ml, and the amount of refrigerant used can be less than 90 g. 3 / REV-3.5cm 3 / REV, the diameter of the compression unit 22 can be less than 80 mm. Here, the diameter of the compression unit 22 is the size of the main body of the compression unit 22, excluding the bracket and related auxiliary components for connection and fixing.

[0128] In order to make the components of the installation module 2 more reasonably distributed and reduce the size of the installation module 2 in three directions, in some embodiments, such as Figures 1 to 3 As shown, the compression unit 22, the throttling unit 24, and the second heat exchange unit 25 are arranged in a straight line. The first heat exchange unit 23 is arranged in parallel with the straight line. For example, the compression unit 22, the throttling unit 24, and the second heat exchange unit 25 are arranged in a straight line in the thickness direction of the heat pump water heater. The throttling unit 24, the compression unit 22, and the second heat exchange unit 25 are arranged in sequence so that the components can be connected through a connecting pipe. The first heat exchange unit 23 is located above or below the compression unit 22, the throttling unit 24, and the second heat exchange unit 25. Correspondingly, a fan 26 can be provided on the side of the first heat exchange unit 23 facing away from the inner tank 1. There can be two fans 26, and the two fans 26 are arranged in a straight line.

[0129] In some embodiments, for conventional 60L, 80L or even larger water heaters on the market, generally for the convenience of installation and more applicable places, the size of the water heater in the thickness direction does not change much. With the increase of volume, the size of the water heater in the length and width directions is usually increased, or in other words, the size increase in the length and width directions is relatively the largest. Therefore, for the heat pump water heater with a substantially elliptical radial cross section of the shell 5, in order to enable the mounting module 2 to be directly mounted on the end of the inner tank 1 in the heat pump water heater of conventional volume, the size of the mounting module 2 multiplied by the width can be less than or equal to 36cm×36cm, which can not only meet the size requirements of the shell 5 in the thickness direction, but also form a sufficiently large gap between the upper end or lower end of the mounting module 2 and the inner side wall of the shell 5 in the width direction to accommodate other components, such as the pump unit 3, the control panel 9, etc. For the heat pump water heater with a substantially elliptical radial cross section of the shell 5, its inner tank 1 can be in the shape of a flat tank, or its inner tank 1 can adopt a double inner tank arranged in parallel.

[0130] In some embodiments, Figure 4a Schematic diagram of the structure of the housing in the embodiment of the utility model. Figure 4aAs shown, the shell 5 may include: a shell side wall 51 and a shell end cover 52. The shell side wall 51 surrounds the inner liner 1. At least one end of the shell side wall 51 is open. The shell end cover 52 is installed at the end of the shell side wall 51. The shell end cover 52 has a gas inlet 521 and a gas outlet 522. Under the action of the fan 26, air flows into the shell 5 from the gas inlet 521 and flows out from the gas outlet 522 after passing through the first heat exchange unit 23.

[0131] Furthermore, in order to ensure that most of the air flowing into the housing 5 through the gas inlet 521 flows through the first heat exchange unit 23 and flows out from the gas outlet 522, Figure 4b Schematic diagram of the structure of the housing end cover in the embodiment of the utility model, as shown in Figure 4b As shown, there is a guide structure 523 between the gas outlet 522 of the shell end cover 52 and the outlet of the fan 26, one end of the guide structure 523 is connected to or against the gas outlet 522 of the shell end cover 52, and the other end of the guide structure 523 is connected to or against the outlet of the fan 26. The guide structure 523 forms a gas flow channel, so that the air flowing out of the outlet of the fan 26 is basically discharged from the gas outlet 522 of the shell end cover 52 to avoid mixing with the air flowing into the shell 5 from the gas inlet 521. The gas inlet 521 may have a grille, the direction of the grille (here is the direction of the grille connecting with the air outside the shell 5) is away from the side of the gas outlet 522, so that the air outside the shell 5 away from the gas outlet 522 flows in. The gas outlet 522 may have a grille, the direction of the grille (here is the direction of the grille connecting with the air outside the shell 5) is away from the side of the gas inlet 521, so that the air discharged from the gas outlet 522 is away from the gas inlet 521.

[0132] In some embodiments, Fig.10 and Fig.11 As shown, a heat-insulating layer 13 is attached to one end of the inner liner 1 close to the mounting module 2, and the heat-insulating layer 13 can reduce the heat dissipation of the end of the inner liner 1 close to the mounting module 2. For example, as a preferred embodiment, the heat-insulating layer 13 can be a heat-insulating sponge. In order to facilitate the maintenance or replacement of the components installed at the component installation port 11, the heat-insulating layer 13 has a notch corresponding to the component installation port 11 of the inner liner 1.

[0133] In order to better insulate the component installation port 11 of the inner tank 1, as shown in FIG. Fig.10 and Fig.11As shown, the heat pump water heater may include: a thermal insulation member 10 located between one end of the inner tank 1 close to the mounting module 2 and the mounting module 2. In the axial direction of the inner tank 1, the thermal insulation member 10 at least covers the position corresponding to the notch. Through the above structure, all areas of the end of the inner tank 1 and the outside air have a thermal insulation structure. The thermal insulation member 10 can be made of thermal insulation material. Preferably, the thermal insulation member 10 can be made of glass fiber wool, which has the advantages of good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength.

[0134] In a specific embodiment, the heat-insulating member 10 completely covers the entire end of the inner liner 1. In the axial direction of the inner liner 1, the heat-insulating member 10 may extend to the inner side wall of the shell 5 or the inner side wall of the fixing bracket 6. When there are multiple inner liners 1 arranged in parallel, the heat-insulating member 10 may cover the ends of multiple inner liners 1 at the same time.

[0135] When the heat pump water heater has a fixed bracket 6, as feasible, the heat-insulating member 10 can be arranged inside the fixed bracket 6, that is, at least part of the fixed bracket 6 surrounds the outer circumferential side of the heat-insulating member 10. The part of the end of the fixed bracket 6 facing the inner tank 1 can abut against the heat-insulating layer 13 of the inner tank 1, thereby limiting the position of the fixed bracket 6.

[0136] In some embodiments, the heat pump water heater may include: an electric heating rod inserted into the inner tank 1. The electric heating rod may be installed in the inner tank 1 through the electric heating rod installation port. The electric heating rod may also be used to heat the water in the inner tank. According to specific needs, the second heat exchange unit and the electric heating rod may be used to heat the water in the inner tank 1 at the same time, or only one of the two may be used to heat the water in the inner tank 1.

[0137] Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0138] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0139] The above are only several embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the embodiments without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A heat pump water heater, characterized in that: The heat pump water heater comprises: At least one liner; An installation module, the installation module includes: a mounting part; a compression unit, a first heat exchange unit, a throttling unit, and a second heat exchange unit arranged on the mounting part, the second heat exchange unit having a first heat exchange channel and a second heat exchange channel, the fluid flowing through the first heat exchange channel can exchange heat with the fluid flowing through the second heat exchange channel, the compression unit, the first heat exchange unit, the throttling unit and the first heat exchange channel are connected to form a first circulation channel for the flow of refrigerant; the second heat exchange channel can form a second circulation channel for the flow of water with the inner tank.

2. The heat pump water heater according to claim 1, characterized in that: The first heat exchange unit is used to absorb heat in the air; the installation module also includes: A fan is arranged on the mounting member, and the fan is used to accelerate the air flow at the first heat exchange unit.

3. The heat pump water heater according to claim 2, characterized in that: The fan rotates around its own axis; The first heat exchange unit comprises: a wound heat exchange tube, wherein the heat exchange tube is arranged in at least two layers in the axial direction of the fan.

4. The heat pump water heater according to claim 1, characterized in that: The heat pump water heater also includes: A pump unit, wherein the pump unit, the second heat exchange flow channel and the inner tank form the second circulation flow channel for water flow.

5. The heat pump water heater according to claim 4, characterized in that: In the second circulation channel, The connecting pipe between one end of the second heat exchange channel and the inner tank has a quick connection mechanism or is connected to the corresponding equipment in a detachable connection manner; The connecting pipe between the other end of the second heat exchange flow channel and the inner tank has a quick connection mechanism or is connected to the corresponding equipment in a detachable connection manner.

6. The heat pump water heater according to claim 5, characterized in that: The connecting pipe between one end of the pump unit and the inner tank has a quick connection mechanism or the connecting pipe between one end of the pump unit and the inner tank is connected to the corresponding equipment in a detachable connection manner; and / or, The connecting pipe between the other end of the pump unit and the second heat exchange channel has a quick connection mechanism, or the connecting pipe between the other end of the pump unit and the inner tank is connected to the corresponding equipment in a detachable connection manner.

7. The heat pump water heater according to claim 5 or 6, characterized in that: The quick connection mechanism comprises a quick connector unit connected to the connection pipe; or, The connecting tube includes a first section of the connecting tube and a second section of the connecting tube, and the quick connecting mechanism includes: a first end located at the first section of the connecting tube, a second end located at the second section of the connecting tube, a sealing member, and a limiting member, the first end can be inserted into the second end, and the sealing member is provided between the outer side wall of the first end and the inner side wall of the second end, and the limiting member is used to keep the first end inserted into the second end.

8. The heat pump water heater according to claim 7, characterized in that: The outer side wall of the first end portion has a first outer edge protruding outward in the radial direction, and the outer side wall of the second end portion has a second outer edge protruding outward in the radial direction, and the stopper abuts against the first outer edge and the second outer edge in the axial direction, respectively, so that the first end portion remains inserted into the second end portion; or, The side wall of the second end has a notch, and the outer side wall of the first end has a first outer edge protruding outward in the radial direction; part of the limiting member is inserted into the notch and presses against the first outer edge in the axial direction to keep the first end inserted into the second end.

9. The heat pump water heater according to claim 1, characterized in that: The heat pump water heater comprises: case; The inner container and the mounting module are arranged in the shell, the inner container extends along a first direction and has two opposite ends in the first direction, and the mounting module is located at one end of the inner container.

10. The heat pump water heater according to claim 9, characterized in that: The heat pump water heater comprises: Fixed bracket, The fixing bracket is arranged in the shell and is located at one end of the inner container which is the same as the installation module. The fixing bracket cooperates with the shell to achieve fixation. The installation module is installed on the fixing bracket.

11. The heat pump water heater according to claim 9, characterized in that: The heat pump water heater comprises: Fixed bracket, The fixing bracket is arranged in the shell and is located at the same end of the inner liner as the mounting module. The fixing bracket is connected to the inner liner to achieve fixation; the mounting module is mounted on the fixing bracket.

12. The heat pump water heater according to claim 10 or 11, characterized in that: The mounting module and the fixing bracket are detachably connected.

13. The heat pump water heater according to claim 10 or 11, characterized in that: The fixing bracket has a hollow structure, and the hollow structure corresponds to the component installation port of the inner liner.

14. The heat pump water heater according to claim 13, characterized in that: The component installation port includes at least one of the following: an electric heating rod installation port and an anode unit installation port.

15. The heat pump water heater according to claim 11, characterized in that: A connecting piece with an opening is welded on the outer wall of the inner tank, and a heat insulating piece is arranged at the opening of the connecting piece, and the heat insulating piece has a first heat insulating part and a second heat insulating part; the connecting piece is located between the first heat insulating part and the second heat insulating part; the fixing bracket is installed in cooperation with the heat insulating piece through a fixing piece, and the fixing piece passes through the fixing bracket, the first heat insulating part, the opening, and the second heat insulating part in sequence and then is screwed into a nut.

16. The heat pump water heater according to claim 9, characterized in that: The mounting module is connected to the inner container or the shell to achieve fixation.

17. The heat pump water heater according to claim 16, characterized in that: The mounting module is detachably connected to the inner container or the shell.

18. The heat pump water heater according to claim 4, characterized in that: The pump unit is disposed on the mounting member.

19. The heat pump water heater according to claim 9, characterized in that: The heat pump water heater comprises: A pump unit is located in a gap between the mounting module and an inner side wall of the housing.

20. The heat pump water heater according to claim 9, characterized in that: The heat pump water heater comprises: A control panel is located in a gap between the mounting module and an inner side wall of the housing.

21. The heat pump water heater according to claim 19 or 20, characterized in that: There are two inner containers, which are arranged in a vertical direction; the radial cross section of the shell is generally elliptical; The pump unit or the control panel is located at a gap between the upper end or the lower end of the mounting module and the inner side wall of the housing.

22. The heat pump water heater according to claim 10 or 11, characterized in that: A water receiving portion is formed on the fixed bracket, and the water receiving portion is used to collect condensed water dripping from the surface of the first heat exchange unit.

23. The heat pump water heater according to claim 22, characterized in that: The heat pump water heater comprises: a pressure relief valve connected to the drainage end of the inner tank; a drainage pipe connected to the pressure relief valve, and the water receiving part is connected to the drainage pipe.

24. The heat pump water heater according to claim 1, characterized in that: The refrigerant is R290 refrigerant.

25. The heat pump water heater according to claim 24, characterized in that: The internal volume of the first heat exchange channel of the first heat exchange unit and the second heat exchange unit is less than 500 ml; the usage amount of the refrigerant is less than 90 g.

26. The heat pump water heater according to claim 24, characterized in that: The compression unit displacement is 1.0 cm 3 / REV-3.5cm 3 / REV, the diameter of the compression unit is less than 80 mm.

27. The heat pump water heater according to claim 2, characterized in that: The fan has an air volume of 15m 3 / h-120m 3 / h, the fan is an axial flow fan, and the fan is a DC fan.

28. The heat pump water heater according to claim 4, characterized in that: The size of the pump unit is less than φ60 mm×60 mm, and the power of the pump unit is less than or equal to 15 W.

29. The heat pump water heater according to claim 1, characterized in that: The second heat exchange unit is a plate heat exchanger.

30. The heat pump water heater according to claim 29, characterized in that: The length multiplied by the width multiplied by the thickness of the second heat exchange unit is less than or equal to 140mm×70mm×50mm; the heating capacity of the second heat exchange unit can reach 450W.

31. The heat pump water heater according to claim 1, characterized in that: The compression unit, the throttling unit, and the second heat exchange unit are arranged in a straight line; The first heat exchange unit is arranged in parallel with the straight line.

32. The heat pump water heater according to claim 31, characterized in that: A fan is arranged on a side of the first heat exchange unit away from the inner tank. There are two fans, and the two fans are arranged in an array along the straight line.

33. The heat pump water heater according to claim 9, characterized in that: The installation module also includes: A fan disposed on the mounting member, the fan being used to accelerate air flow at the first heat exchange unit; The shell includes: a shell side wall and a shell end cover, and the shell end cover is provided with a gas inlet and a gas outlet. Under the action of the fan, air flows into the shell from the gas inlet and flows out from the gas outlet after passing through the first heat exchange unit.

34. The heat pump water heater according to claim 33, characterized in that: A flow guide structure is provided between the gas inlet of the shell end cover and the inlet of the fan, one end of the flow guide structure is connected to or abuts against the gas inlet of the shell end cover, and the other end of the flow guide structure is connected to or abuts against the inlet of the fan.

35. The heat pump water heater according to claim 1, characterized in that: The length multiplied by the width of the installation module is less than or equal to 36 cm×36 cm.

36. The heat pump water heater according to claim 9, characterized in that: A heat-insulating layer is pasted on one end of the inner liner close to the mounting module, and the heat-insulating layer has a notch corresponding to the component mounting port of the inner liner.

37. The heat pump water heater according to claim 36, characterized in that: The heat pump water heater also includes: A heat-insulating component is located between one end of the inner liner close to the mounting module and the mounting module; in the axial direction of the inner liner, the heat-insulating component at least covers a position corresponding to the notch.

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