Heat pump water heater

Abstract

The utility model belongs to the technical field of heat supply, and particularly discloses a heat pump water heater. The heat pump water heater comprises an inner container, a fixing piece and a heat exchanger. A water inlet pipe is fixedly arranged on the inner container and communicated with an inner cavity of the inner container. The fixing piece is fixedly arranged on the outer surface of the inner container, a mounting positioning hole, a first connector mounting hole and a second connector mounting hole are formed in the fixing piece, the water inlet pipe penetrates through the mounting positioning hole, and the outer wall of the water inlet pipe is connected with the inner wall of the mounting positioning hole; the heat exchanger comprises a heat exchanger body arranged around the periphery of the inner container, a refrigerant inlet connector is arranged at the inlet end of the heat exchanger body, a refrigerant outlet connector is arranged at the outlet end of the heat exchanger body, the refrigerant inlet connector penetrates through the first connector mounting hole, and the refrigerant outlet connector penetrates through the second connector mounting hole. According to the heat pump water heater, it can be guaranteed that the refrigerant inlet connector and the refrigerant outlet connector can be accurately installed at the designed positions, and then the assembling efficiency of the heat pump water heater is guaranteed.

Description

Technical Field

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

[0002] A heat pump water heater, also known as an air source heat pump water heater, can absorb low-temperature heat energy in the air and convert it into high-temperature heat energy inside the machine. The high-temperature heat energy heats the water in the inner tank of the heat pump water heater to meet the user's needs for using a water heater.

[0003] The heat exchanger is one of the key components of the heat pump water heater. The refrigerant enters the heat exchanger through the refrigerant inlet, and the heat exchange tube of the heat exchanger transfers heat to the water in the inner tank, thereby heating the water; the refrigerant that has completed the heat exchange then flows out through the refrigerant outlet. In order to fix the refrigerant inlet joint and the refrigerant outlet joint, a fixing plate is generally welded on the inner tank, and the refrigerant inlet joint and the refrigerant outlet joint are fixed on the fixing plate.

[0004] However, when welding the fixing plate to the inner tank, the fixing plate is sometimes welded crookedly; after the fixing plate is welded crookedly, the installation of the refrigerant inlet joint and the refrigerant outlet joint will also be misaligned. When installing the outer shell of the heat pump water heater, the hole structure on the outer shell corresponding to the refrigerant inlet joint cannot be aligned with the refrigerant inlet joint, and the hole structure on the outer shell corresponding to the refrigerant outlet joint cannot be aligned with the refrigerant outlet joint, affecting the assembly of the outer shell. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a heat pump water heater, which can effectively solve the technical problem in the prior art that when the fixing plate is welded to the inner tank, the fixing plate may be welded crookedly.

[0006] The above technical problems are solved by the following technical solutions:

[0007] Heat pump water heater, including:

[0008] An inner liner, wherein a water inlet pipe is fixedly arranged on the inner liner, and the water inlet pipe is communicated with the inner cavity of the inner liner;

[0009] A fixing member is fixedly arranged on the outer surface of the inner tank, and a mounting hole, a first joint mounting hole and a second joint mounting hole are formed on the fixing member. The water inlet pipe is arranged through the mounting hole, and the outer wall of the water inlet pipe is connected to the inner wall of the mounting hole;

[0010] The heat exchanger comprises a heat exchanger body arranged around the outer circumference of the inner tank, the inlet end of the heat exchanger body is provided with a refrigerant inlet joint, the outlet end of the heat exchanger body is provided with a refrigerant outlet joint, the refrigerant inlet joint is arranged through the first joint mounting hole, and the refrigerant outlet joint is arranged through the second joint mounting hole.

[0011] Compared with the background technology, the heat pump water heater described in the utility model has the following beneficial effects:

[0012] The heat pump water heater can ensure that the refrigerant inlet joint and the refrigerant outlet joint can be accurately installed at the designed positions, thereby ensuring the assembly efficiency of the heat pump water heater.

[0013] When assembling the heat pump water heater, firstly, the installation positioning hole of the fixing part is set through the water inlet pipe. Since the outer wall of the water inlet pipe is connected with the inner wall of the installation positioning hole, the water inlet pipe can position the fixing part to ensure the accuracy of the fixing part installation position; then, the refrigerant inlet joint is set through the first joint installation hole, and the refrigerant outlet joint is set through the second joint installation hole, so as to ensure that the refrigerant inlet joint and the refrigerant outlet joint can be accurately installed to the designed position. Finally, the fixing part is fixed to the outer surface of the inner tank.

[0014] When assembling the shell of the heat pump water heater, the hole structure on the shell corresponding to the refrigerant inlet joint can be directly aligned with the refrigerant inlet joint, and the hole structure on the shell corresponding to the refrigerant outlet joint can be directly aligned with the refrigerant outlet joint, thereby ensuring the efficiency of the shell installation.

[0015] In one embodiment, the heat exchanger further comprises an inlet connecting pipe, one end of which is connected to the inlet end of the heat exchanger body, and the other end of which is fixedly connected to the refrigerant inlet joint; and / or

[0016] The heat exchanger further comprises an outlet connecting pipe, one end of which is communicated with the outlet end of the heat exchanger body, and the other end of which is fixedly connected with the refrigerant outlet joint.

[0017] In one embodiment, the fixing member includes a fixing member body, and support parts are provided at both ends of the fixing member body, and the two support parts are fixedly connected to the inner liner. There is an avoidance space between the fixing member body and the outer surface of the inner liner, the installation positioning hole is provided on one of the support parts, and the first joint installation hole and the second joint installation hole are both provided on the fixing member body.

[0018] In one embodiment, the support portion comprises:

[0019] A fixed connecting plate, fixedly connected to the inner container, wherein one of the fixed connecting plates is provided with the mounting positioning hole;

[0020] The connecting plate is arranged at an angle with the fixing body, one end of the connecting plate is fixedly connected to the fixing body, and the other end of the connecting plate is fixedly connected to the fixing body.

[0021] In one embodiment, the heat exchanger body includes two collecting pipes and a plurality of flat tubes. The two collecting pipes are arranged at intervals on the outer periphery of the inner tank. Each of the collecting pipes extends along the axial direction of the inner tank. The flat tubes are arranged around the inner tank and are connected between the two collecting pipes. The two collecting pipes are connected by a collecting pipe connecting structure.

[0022] In one embodiment, the collecting pipe connection structure includes an elastic member, and two ends of the elastic member are respectively connected to the two collecting pipes.

[0023] In one of the embodiments, the header connection structure includes a locking bolt, and the locking bolt connects the two headers.

[0024] In one of the embodiments, the heat pump water heater further comprises a support member, wherein the support member is disposed at the lower end of the inner tank, and a hook hole is disposed on the support member.

[0025] In one of the embodiments, an avoidance gap is provided on the support member, and the avoidance gap is arranged opposite to the lower end of the inner container.

[0026] In one embodiment, the fixing member is welded to the outer surface of the inner container. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the heat pump water heater provided in the embodiment of the utility model Figure 1 ;

[0028] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0029] Figure 3 A schematic diagram of the structure of the heat pump water heater provided in the embodiment of the utility model Figure 2 ;

[0030] Figure 4 for Figure 3 A partial structural diagram of

[0031] Figure 5 A front view of a fixing member provided in an embodiment of the utility model;

[0032] Figure 6A side view of a fixing member provided in an embodiment of the utility model;

[0033] Figure 7 A schematic diagram of the arrangement of the support member on the inner container provided in an embodiment of the utility model.

[0034] Description of labels:

[0035] 1. Inner tank; 11. Water inlet pipe; 12. Lower cover of inner tank;

[0036] 2. Fixing piece; 21. Installation positioning hole; 22. First joint installation hole; 23. Second joint installation hole; 24. Fixing piece body; 25. Support part; 251. Fixed connecting plate; 252. Connecting plate; 26. Avoidance space;

[0037] 3. Heat exchanger; 31. Heat exchanger body; 311. Collector; 312. Flat tube; 32. Refrigerant inlet connector; 33. Refrigerant outlet connector; 34. Inlet connecting pipe; 35. Outlet connecting pipe;

[0038] 4. Collector connection structure; 41. Elastic member;

[0039] 5. Support member; 51. Hook hole; 52. Avoidance gap. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] See also Figure 1-Figure 5 , this embodiment provides a heat pump water heater.

[0046] Specifically, the heat pump water heater includes an inner tank 1 , a fixing member 2 and a heat exchanger 3 .

[0047] A water inlet pipe 11 is fixedly provided on the inner container 1 , and the water inlet pipe 11 is communicated with the inner cavity of the inner container 1 .

[0048] Specifically, the inner tank 1 is an enamel inner tank.

[0049] The fixing member 2 is fixedly arranged on the outer surface of the inner tank 1. The fixing member 2 is provided with an installation positioning hole 21, a first joint installation hole 22 and a second joint installation hole 23. The water inlet pipe 11 is arranged through the installation positioning hole 21, and the outer wall of the water inlet pipe 11 is connected to the inner wall of the installation positioning hole 21.

[0050] The heat exchanger 3 includes a heat exchanger body 31 arranged around the outer periphery of the inner tank 1, a refrigerant inlet joint 32 is arranged at the inlet end of the heat exchanger body 31, and a refrigerant outlet joint 33 is arranged at the outlet end of the heat exchanger body 31. The refrigerant inlet joint 32 is arranged through the first joint mounting hole 22, and the refrigerant outlet joint 33 is arranged through the second joint mounting hole 23.

[0051] Specifically, the refrigerant inlet joint 32 is arranged through the first joint installation hole 22 and then fixedly connected to the fixing member 2 through a connecting member; the refrigerant outlet joint 33 is arranged through the second joint installation hole 23 and then fixedly connected to the fixing member 2 through a connecting member. Optionally, the connecting member is a screw or a bolt.

[0052] The heat pump water heater provided in this embodiment can ensure that the refrigerant inlet joint 32 and the refrigerant outlet joint 33 can be accurately installed at the designed position, thereby ensuring the assembly efficiency of the heat pump water heater.

[0053] When assembling the heat pump water heater, firstly, the installation positioning hole 21 of the fixing member 2 is set through the water inlet pipe 11. Since the outer wall of the water inlet pipe 11 is connected to the inner wall of the installation positioning hole 21, the water inlet pipe 11 can position the fixing member 2 to ensure the accuracy of the installation position of the fixing member 2; then, the refrigerant inlet joint 32 is set through the first joint installation hole 22, and the refrigerant outlet joint 33 is set through the second joint installation hole 23, so as to ensure that the refrigerant inlet joint 32 and the refrigerant outlet joint 33 can be accurately installed to the designed position. Finally, the fixing member 2 is fixed to the outer surface of the inner tank 1.

[0054] When assembling the shell of the heat pump water heater, the hole structure on the shell corresponding to the refrigerant inlet joint 32 can be directly aligned with the refrigerant inlet joint 32, and the hole structure on the shell corresponding to the refrigerant outlet joint 33 can be directly aligned with the refrigerant outlet joint 33, thereby ensuring the efficiency of the shell installation.

[0055] In order to further ensure the accuracy of the installation position of the fixing member 2, in one embodiment, the heat exchanger 3 further includes an inlet connecting pipe 34, one end of the inlet connecting pipe 34 is connected to the inlet end of the heat exchanger body 31, and the other end of the inlet connecting pipe 34 is fixedly connected to the refrigerant inlet joint 32; and / or

[0056] The heat exchanger 3 further includes an outlet connecting pipe 35 , one end of which is communicated with the outlet end of the heat exchanger body 31 , and the other end of which is fixedly connected to the refrigerant outlet joint 33 .

[0057] Preferably, the heat exchanger 3 includes an inlet connecting pipe 34 and an outlet connecting pipe 35; one end of the inlet connecting pipe 34 is connected to the inlet end of the heat exchanger body 31, and the other end of the inlet connecting pipe 34 is fixedly connected to the refrigerant inlet joint 32; one end of the outlet connecting pipe 35 is connected to the outlet end of the heat exchanger body 31, and the other end of the outlet connecting pipe 35 is fixedly connected to the refrigerant outlet joint 33. In this way, the inlet connecting pipe 34 and the outlet connecting pipe 35 can also limit the position of the fixing member 2, further ensuring the accuracy of the installation position of the fixing member 2.

[0058] Specifically, in this embodiment, the steps for installing the fixing member 2 are as follows:

[0059] The installation positioning hole 21 of the fixing member 2 is arranged through the water inlet pipe 11;

[0060] The refrigerant inlet connector 32 is installed through the first connector installation hole 22, and the refrigerant outlet connector 33 is installed through the second connector installation hole 23;

[0061] The inlet connecting pipe 34 is fixedly connected to the refrigerant inlet connector 32;

[0062] The outlet connecting pipe 35 is fixedly connected to the refrigerant outlet connector 33;

[0063] The fixing member 2 is fixedly connected to the inner container 1 .

[0064] Such an arrangement fully ensures the accuracy of the installation position of the fixing member 2.

[0065] In one embodiment, the fixing member 2 is welded to the outer surface of the inner liner 1. Of course, in other embodiments, the fixing member 2 can also be fixed to the outer surface of the inner liner 1 by bolts or screws.

[0066] See also Figure 2 , Figure 5 and Figure 6 In one embodiment, the fixing member 2 includes a fixing member body 24, both ends of which are provided with support portions 25, the two support portions 25 are fixedly connected to the inner liner 1, and there is an avoidance space 26 between the fixing member body 24 and the outer surface of the inner liner 1, the installation positioning hole 21 is provided on one of the support portions 25, and the first joint installation hole 22 and the second joint installation hole 23 are both provided on the fixing member body 24.

[0067] Preferably, in this embodiment, the fixing member 2 is an integrally formed structure.

[0068] The provision of the avoidance space 26 facilitates the connection between the inlet connecting pipe 34 and the outlet connecting pipe 35 and the fixing member 2 .

[0069] Furthermore, in order to form the avoidance space 26 , the support portion 25 includes a fixed connecting plate 251 and a connecting plate 252 .

[0070] The fixed connection plate 251 is fixedly connected to the inner container 1, and a mounting positioning hole 21 is provided on one of the fixed connection plates 251. Specifically, the fixed connection plate 251 is welded to the inner container 1.

[0071] The connecting plate 252 is arranged at an angle with the fixing body 24 , one end of the connecting plate 252 is fixedly connected to the fixing body 24 , and the other end of the connecting plate 252 is fixedly connected to the fixing body 24 .

[0072] It should be noted that the longitudinal dimension of the fixed connection plate 251 provided with the installation positioning hole 21 is larger than the longitudinal dimension of the other fixed connection plate 251 .

[0073] The heat exchanger 3 is a microchannel heat exchanger. The heat exchanger body 31 can transfer the heat of the refrigerant to the water in the inner tank 1 to meet the user's demand for hot water.

[0074] In one embodiment, the heat exchanger body 31 includes two collecting pipes 311 and a plurality of flat tubes 312. The two collecting pipes 311 are arranged at intervals on the outer periphery of the inner tank 1. Each collecting pipe 311 extends along the axial direction of the inner tank 1. The flat tubes 312 are arranged around the inner tank 1 and are connected between the two collecting pipes 311. The two collecting pipes 311 are connected by a collecting pipe connecting structure 4.

[0075] Optionally, a plurality of current collecting pipe connection structures 4 are arranged between the two current collecting pipes 311 .

[0076] The flat tube 312 is provided with a microchannel therein.

[0077] Further, the refrigerant inlet joint 32 and the refrigerant outlet joint 33 are both connected to one of the manifolds 311. Specifically, the refrigerant inlet joint 32 is connected to the manifold 311 through the inlet connecting pipe 34, and the refrigerant outlet joint 33 is connected to the manifold 311 through the outlet connecting pipe 35.

[0078] For the convenience of description, the header 311 connected with the refrigerant inlet connector 32 and the refrigerant outlet connector 33 is called the first header, and the other header 311 is called the second header. The first header is provided with an upper cavity and a lower cavity which are independent of each other.

[0079] It should be noted that the plurality of flat tubes 312 are divided into two parts, and the refrigerant flow direction in one part of the flat tubes 312 is opposite to the refrigerant flow direction in the other part of the flat tubes 312 .

[0080] Specifically, Figure 4 Taking the shown orientation as an example, the refrigerant flows from the refrigerant inlet joint 32 via the inlet connecting pipe 34 to the upper cavity of the first collecting pipe, the refrigerant in the upper cavity flows to the second collecting pipe via the flat tube 312 in the upper part, the refrigerant flows to the flat tube 312 in the lower part via the second collecting pipe, and then flows to the lower cavity of the first collecting pipe via the flat tube 312 in the lower part, and the refrigerant in the lower cavity flows to the refrigerant outlet joint 33 via the outlet connecting pipe 35.

[0081] In order to ensure the stable installation of the heat exchanger 3, in one embodiment, the header connection structure 4 includes an elastic member 41, and the two ends of the elastic member 41 are respectively connected to the two headers 311. Figure 4 , connecting pieces are fixedly provided on the two collecting pipes 311 , and the elastic member 41 is a compression spring, and the two ends of the compression spring are respectively hooked on the two connecting pieces.

[0082] In one embodiment, the header connection structure 4 includes a locking bolt, which connects the two headers 311. Specifically, a connecting piece is fixedly provided on each of the two headers 311, and the locking bolt connects the two connecting pieces together.

[0083] In order to stably support the inner tank 1 , the heat pump water heater further comprises a support member 5 , which is arranged at the lower end of the inner tank 1 and has a hook hole 51 .

[0084] The support member 5 is disposed at the lower end of the inner container 1 to stably support the inner container 1 and prevent the inner container 1 from tilting.

[0085] The support member 5 is provided with a hook hole 51 so that the inner container 1 can be hung.

[0086] Furthermore, in one of the embodiments, a relief notch 52 is provided on the support member 5 , and the relief notch 52 is arranged opposite to the lower end of the inner container 1 .

[0087] The avoidance notch 52 is arranged opposite to the lower end of the inner container 1, thereby forming an avoidance position to prevent enamel powder or other substances in the support member 5 from flowing out.

[0088] Specifically, the support member 5 is welded to the inner container lower cover 12 at the lower end of the inner container 1 .

[0089] Specifically, the support member 5 is a frame structure.

[0090] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The specific contents of the above specific implementations only express several implementations of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat pump water heater, characterized in that: include: An inner liner (1), wherein a water inlet pipe (11) is fixedly arranged on the inner liner (1), and the water inlet pipe (11) is communicated with the inner cavity of the inner liner (1); A fixing member (2) is fixedly arranged on the outer surface of the inner tank (1), and a mounting positioning hole (21), a first joint mounting hole (22) and a second joint mounting hole (23) are provided on the fixing member (2), and the water inlet pipe (11) is arranged through the mounting positioning hole (21), and the outer wall of the water inlet pipe (11) is connected to the inner wall of the mounting positioning hole (21); The heat exchanger (3) comprises a heat exchanger body (31) arranged around the outer periphery of the inner tank (1), the inlet end of the heat exchanger body (31) is provided with a refrigerant inlet joint (32), the outlet end of the heat exchanger body (31) is provided with a refrigerant outlet joint (33), the refrigerant inlet joint (32) is arranged through the first joint mounting hole (22), and the refrigerant outlet joint (33) is arranged through the second joint mounting hole (23).

2. The heat pump water heater according to claim 1, characterized in that: The heat exchanger (3) further comprises an inlet connecting pipe (34), one end of which is in communication with the inlet end of the heat exchanger body (31), and the other end of which is fixedly connected to the refrigerant inlet joint (32); and / or The heat exchanger (3) further comprises an outlet connecting pipe (35), one end of which is connected to the outlet end of the heat exchanger body (31), and the other end of which is fixedly connected to the refrigerant outlet joint (33).

3. The heat pump water heater according to claim 1, characterized in that: The fixing member (2) comprises a fixing member body (24), both ends of which are provided with support portions (25), the two support portions (25) being fixedly connected to the inner liner (1), an avoidance space (26) being provided between the fixing member body (24) and the outer surface of the inner liner (1), the installation positioning hole (21) being provided on one of the support portions (25), and the first joint installation hole (22) and the second joint installation hole (23) being provided on the fixing member body (24).

4. The heat pump water heater according to claim 3, characterized in that: The support portion (25) comprises: A fixed connection plate (251) fixedly connected to the inner container (1), wherein one of the fixed connection plates (251) is provided with the installation positioning hole (21); The connecting plate (252) is arranged at an angle with the fixing body (24), one end of which is fixedly connected to the fixing body (24) and the other end of which is fixedly connected to the fixed connecting plate (251).

5. The heat pump water heater according to claim 1, characterized in that: The heat exchanger body (31) comprises two collecting pipes (311) and a plurality of flat tubes (312); the two collecting pipes (311) are arranged at intervals on the outer periphery of the inner tank (1); each of the collecting pipes (311) extends along the axial direction of the inner tank (1); the flat tubes (312) are arranged around the inner tank (1) and are connected between the two collecting pipes (311); and the two collecting pipes (311) are connected via a collecting pipe connection structure (4).

6. The heat pump water heater according to claim 5, characterized in that: The collecting pipe connection structure (4) comprises an elastic member (41), and two ends of the elastic member (41) are respectively connected to the two collecting pipes (311).

7. The heat pump water heater according to claim 5, characterized in that: The collecting pipe connection structure (4) comprises a locking bolt, and the locking bolt connects the two collecting pipes (311).

8. The heat pump water heater according to claim 1, characterized in that: The heat pump water heater further comprises a support member (5), wherein the support member (5) is arranged at the lower end of the inner tank (1), and a hook hole (51) is arranged on the support member (5).

9. The heat pump water heater according to claim 8, characterized in that: The support member (5) is provided with an avoidance notch (52), and the avoidance notch (52) is arranged opposite to the lower end of the inner container (1).

10. The heat pump water heater according to any one of claims 1 to 9, characterized in that: The fixing member (2) is welded to the outer surface of the inner container (1).

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