Water heater and heat pump unit

Abstract

The present invention discloses a water heater and a heat pump unit, which relate to the field of water heaters and are used to optimize the structure of the water heater. The water heater includes a housing, an inner tank, a refrigerant pipeline, a pipe joint, and a sealing component. A first installation hole is provided in the wall of the housing. The length direction of the first installation hole is parallel to the axial direction of the housing, and the length of the first installation hole is greater than the width of the first installation hole. The inner tank is installed in the housing; the refrigerant pipeline is wound around the outer wall of the inner tank and is located in the housing; the pipe joint is in fluid communication with the end of the refrigerant pipeline, and the pipe joint extends out of the housing through the first installation hole; the sealing component is installed in the first installation hole. The arc of the sealing component matches the arc of the housing, and the sealing component fits the hole wall of the first installation hole and the outer surface of the pipe joint. For the water heater provided by the above technical solution, the housing adopts the first installation hole extending along its own axis, and the sealing component effectively seals the gap between the first installation hole and the pipe joint of the refrigerant pipeline.

Description

Technical Field

[0001] The present invention relates to the field of water heaters, and particularly to a water heater and a heat pump unit. Background Art

[0002] The water tank of an air source heat pump water heater is installed in outdoor areas such as balconies and roofs in urban villages, third- and fourth-tier cities, and rural areas. The water tanks of static heating air source heat pump water heaters all have a working medium port for connecting to the refrigerant pipe port of the external unit. The water tank includes a housing, a heat insulation layer, and an inner tank. Among them, the outer wall of the inner tank is wrapped with a refrigerant pipe.

[0003] The inventor found that there are at least the following problems in the prior art: rainwater is likely to leak into the working medium port of the existing air source heat pump water heater. Once water penetrates through the housing and enters the heat insulation layer, there is a risk of contacting the inner tank heat exchanger, corroding the refrigerant flow path, causing the refrigerant flow path to rust and perforate, and the water tank to leak fluorine, resulting in the scrapping of the entire water tank. Summary of the Invention

[0004] The present invention provides a water heater and a heat pump unit to optimize the structure of the water heater.

[0005] An embodiment of the present invention provides a water heater, including:

[0006] A housing, with a first mounting hole provided in the wall. The length direction of the first mounting hole is parallel to the axial direction of the housing, and the length of the first mounting hole is greater than the width of the first mounting hole;

[0007] An inner tank, installed in the housing;

[0008] A refrigerant pipeline, wound around the outer wall of the inner tank and located in the housing;

[0009] A pipe joint, in fluid communication with the end of the refrigerant pipeline, and the pipe joint extends out of the housing through the first mounting hole; and

[0010] A sealing assembly, installed in the first mounting hole. The radian of the sealing assembly matches the radian of the housing, and the sealing assembly fits against the hole wall of the first mounting hole and the outer surface of the pipe joint.

[0011] In some embodiments, the sealing assembly includes:

[0012] A first sealing ring, installed in the first mounting hole; the first sealing ring includes a second mounting hole;

[0013] A cover body, installed in the second mounting hole; the cover body includes a third mounting hole, and the pipe joint extends out of the third mounting hole; and

[0014] A second sealing ring is sleeved on the pipe joint and clamped between the cover body and the pipe joint;

[0015] Wherein, the first sealing ring fits against the outer wall of the housing, and the second sealing ring fits against the outer surfaces of the cover body and the pipe joint.

[0016] In some embodiments, the sealing assembly further includes:

[0017] A backing plate having a fifth mounting hole through which the pipe joint passes, and the backing plate is located on a side of the second sealing ring away from the first sealing ring; and

[0018] A fastener fixedly connecting the backing plate and the first sealing ring.

[0019] In some embodiments, ribs are provided on the surface of the first sealing ring facing the housing, and the ribs are pressed against the housing.

[0020] In some embodiments, at least two of the ribs have different protruding heights.

[0021] In some embodiments, the second sealing ring includes:

[0022] A connecting portion having a fourth mounting hole through which the pipe joint passes; and

[0023] An extension portion fixed to the connecting portion and extending in a direction away from the axis of the fourth mounting hole; one of a protrusion and a groove is provided on the extension portion, and the other of the protrusion and the groove is provided on the cover body, and the extension portion and the cover body cooperate.

[0024] In some embodiments, both the protrusion and the groove are configured to be annular.

[0025] In some embodiments, the radian of the first sealing ring is consistent with the radian of the housing at the first mounting hole.

[0026] In some embodiments, the radian of the cover body is consistent with the radian of the housing within the first mounting hole.

[0027] In some embodiments, the pipe joint includes:

[0028] A first pipe joint fluidly connected to one end of the refrigerant pipeline; and

[0029] A second pipe joint fluidly connected to the other end of the refrigerant pipeline;

[0030] Wherein, the first pipe joint and the second pipe joint are arranged along the length direction of the first mounting hole.

[0031] An embodiment of the present invention further provides a heat pump unit, including an air conditioner and a water heater provided by any technical solution of the present invention, and a refrigerant flow path of the air conditioner is in fluid communication with a refrigerant pipeline of the water heater.

[0032] For the water heater provided by the above technical solution, its outer shell adopts a first mounting hole extending along its own axis. The arc of the first mounting hole is small, that is, the angle of the central angle corresponding to the first mounting hole in the circumferential direction is small, so that the arc span of the first mounting hole is small. The sealing component can effectively seal the gap between the first mounting hole and the pipe joint of the refrigerant pipeline, preventing external rainwater, etc. from entering the gap between the outer shell and the inner tank, reducing the risk of corrosion of the refrigerant pipeline, improving the service life and performance of the water heater, greatly enhancing the waterproof performance at the pipe joint, improving the assembly efficiency of the working medium port of the water tank, and improving the waterproof performance, making the service life of the water tank longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0034] Figure 1 is a partial cross-sectional view of the water heater provided by an embodiment of the present invention;

[0035] Figure 2 is a partial exploded view of the water heater provided by an embodiment of the present invention;

[0036] Figure 3a is a three-dimensional structural view of the cover body of the water heater provided by an embodiment of the present invention;

[0037] Figure 3b is a front view structural view of the cover body of the water heater provided by an embodiment of the present invention;

[0038] Figure 3c is Figure 3b a sectional view taken along line A-A of

[0039] Figure 3d is a top view structural view of the cover body of the water heater provided by an embodiment of the present invention;

[0040] Figure 4a is a three-dimensional structural view of the first sealing ring of the water heater provided by an embodiment of the present invention;

[0041] Figure 4b is a front view structural view of the first sealing ring of the water heater provided by an embodiment of the present invention;

[0042] Figure 4c is Figure 4b a sectional view taken along line B-B of

[0043] Figure 4d Schematic top view structure diagram of the first sealing ring of the water heater provided by the embodiment of the present invention;

[0044] Figure 5a Schematic three-dimensional structure diagram of the second sealing ring of the water heater provided by the embodiment of the present invention;

[0045] Figure 5b Schematic front view structure diagram of the second sealing ring of the water heater provided by the embodiment of the present invention;

[0046] Figure 5c Schematic top view structure diagram of the second sealing ring of the water heater provided by the embodiment of the present invention;

[0047] Figure 6a Schematic three-dimensional structure diagram of the backing plate of the water heater provided by the embodiment of the present invention;

[0048] Figure 6b Schematic front view structure diagram of the backing plate of the water heater provided by the embodiment of the present invention;

[0049] Figure 6c is Figure 6b Schematic C-C cross-sectional view of;

[0050] Figure 6d Schematic top view structure diagram of the backing plate of the water heater provided by the embodiment of the present invention;

[0051] Figure 7 Schematic partially enlarged view of the outer shell of the water heater provided by the embodiment of the present invention. Detailed implementation manners

[0052] The following combines Figures 1 to 7 to elaborate the technical solution provided by the present invention in more detail.

[0053] See Figure 1 , the embodiment of the present invention provides a water heater, including an outer shell 1, an inner tank 2, a refrigerant pipeline 3, a pipe joint 4, and a sealing assembly 5.

[0054] The wall of the outer shell 1 is provided with a first mounting hole 11. The length direction of the first mounting hole 11 is parallel to the axial direction of the outer shell 1, and the length of the first mounting hole 11 is greater than the width of the first mounting hole 11. Specifically, the length dimension of the first mounting hole 11 is more than twice the width dimension of the first mounting hole 11. The outer shell 1 is a protective component of the water heater, and there are various structural forms. Generally speaking, this water heater is installed in areas such as balconies and rooftops in urban villages, third- and fourth-tier cities, and rural markets. The outer shell 1 is an upright cylinder or elliptical cylinder as a whole. For the outer shell 1 with such a structural form, the area of the balcony and rooftop it occupies is small, and the height can be set very high. Therefore, the size of the inner tank 2 located inside the outer shell 1 is large enough, and the amount of water that can be heated at one time is large. The first mounting hole 11 is a vertically opened hole, its length dimension is greater than the width dimension, and the length dimension is along the axial direction of the outer shell 1. That is, in the installed state, the length direction of the first mounting hole 11 is along the height direction of the water heater. Such a structure makes the area of the outer shell 1 occupied by the first mounting hole 11 in the circumferential direction small, and the arc span of the first mounting hole 11 is small, providing the possibility for the sealing component 5 to closely fit the outer shell 1.

[0055] The inner tank 2 is installed in the outer shell 1. The outer shell 1 serves as a protective cover, and the inner tank 2 is used to hold water. The refrigerant pipeline 3 is wound around the outer wall of the inner tank 2, and the refrigerant pipeline 3 is located in the outer shell 1. The inner tank 2 can adopt an existing structure. The specific structural form of the inner tank 2 also matches the structure of the outer shell 1. The inner tank 2 is also an upright cylinder or elliptical cylinder.

[0056] Refrigerant is passed through the refrigerant pipeline 3, and heat exchange is carried out between the refrigerant and the water in the inner tank 2 to heat the water in the inner tank 2. The material of the refrigerant pipeline 3 is a metal material with good thermal conductivity, such as copper, etc. The refrigerant pipeline 3 is wound around the outer wall of the inner tank 2 and can be wound several times.

[0057] The pipe joint 4 is in fluid communication with the end of the refrigerant pipeline 3, and the pipe joint 4 extends out of the outer shell 1 through the first mounting hole 11. The pipe joint 4 and the end of the refrigerant pipeline 3 are fixed together and are in fluid communication. Specifically, a fixed connection can be achieved by means such as welding.

[0058] See Figure 1, there are two pipe connectors 4: the first pipe connector 41 and the second pipe connector 42, which are arranged along the length direction of the first mounting hole 11. The first pipe connector 41 serves as the refrigerant inlet, and the second pipe connector 42 serves as the refrigerant outlet. The first pipe connector 41 is fixedly welded and fluidly connected to one end of the refrigerant pipeline 3, and the second pipe connector 42 is fixedly welded and fluidly connected to the other end of the refrigerant pipeline 3. In order to heat the water in the inner tank 2, the gaseous refrigerant is introduced into the first pipe connector 41, and the liquid refrigerant flows out of the second pipe connector 42. The inner diameter dimension of the first pipe connector 41 is larger than that of the second pipe connector 42. Since both the first pipe connector 41 and the second pipe connector 42 protrude from the housing 1. The housing 1 is provided with the first mounting hole 11, so that the first pipe connector 41 and the second pipe connector 42 can protrude from the housing 1 and be connected to the refrigerant flow path of the air conditioner. When it rains or other weather occurs, the external rainwater may enter the gap between the housing 1 and the inner tank 2 through the first mounting hole 11, causing a safety hazard. Setting the sealing assembly 5 can effectively reduce the occurrence of this situation.

[0059] See Figure 1 and Figure 7 , the sealing assembly 5 is installed in the first mounting hole 11. The radian of the sealing assembly 5 matches the radian of the housing 1, and the sealing assembly 5 fits the hole wall of the first mounting hole 11 and the outer surface of the pipe connector 4. The material hardness of the sealing assembly 5 is lower than that of the housing 1 and the pipe connector 4. The sealing assembly 5 completely surrounds the edge of the first mounting hole 11 and the outer surface of the pipe connector 4 to effectively block the gap between the pipe connector 4 and the edge of the first mounting hole 11, so that the external rainwater will not enter the gap between the housing 1 and the inner tank 2.

[0060] See Figure 1 and Figure 2 , in some embodiments, the sealing assembly 5 includes a first sealing ring 51, a cover body 52 and a second sealing ring 53. The first sealing ring 51 is installed in the first mounting hole 11; the first sealing ring 51 includes a second mounting hole 511. The cover body 52 is installed in the second mounting hole 511; the cover body 52 includes a third mounting hole 521, and the pipe connector 4 protrudes from the third mounting hole 521. The second sealing ring 53 is sleeved on the pipe connector 4 and clamped between the cover body 52 and the pipe connector 4. Among them, the first sealing ring 51 fits the outer wall of the housing 1, and the second sealing ring 53 fits the outer surfaces of the cover body 52 and the pipe connector 4.

[0061] The hardness of the first sealing ring 51 is less than that of the cover body 52, and the hardness of the second sealing ring 53 is also less than that of the cover body 52. Both the first sealing ring 51 and the second sealing ring 53 can be made of rubber rings. The cover body 52 can be made of an injection molded part.

[0062] See Figure 1 and Figure 2, in some embodiments, the radian of the first sealing ring 51 is the same as that of the outer shell 1 at the first mounting hole 11. This structure enables the first sealing ring 51 to completely fit the outer surface of the outer shell 1, so as to improve the sealing effect.

[0063] Participate Figures 3a to 3d , in some embodiments, the radian of the cover body 52 is the same as that of the outer shell 1 within the first mounting hole 11. This structure makes the cover body 52 fit tightly with the outer shell 1, and there is no extra gap between them, so the installation of the cover body 52 is more stable.

[0064] See Figures 4a to 4c , in order to make the effect of the first sealing ring 51 better, in some embodiments, ribs 512 are provided on the surface of the first sealing ring 51 facing the outer shell 1, and the ribs 512 are pressed against the outer shell 1. The ribs 512 are made of flexible materials such as rubber. The ribs 512 are configured to be annular, and the shape of the surface of the ribs 512 facing the outer shell 1 completely matches the surface properties of the outer shell 1, so that the ribs 512 can completely fit the surface of the outer shell 1. The ribs 512 can effectively prevent rainwater from the outside from entering the interior of the outer shell 1 through the edge of the first mounting hole 11.

[0065] The first sealing ring 51 has ribs 512, and the number of ribs 512 is greater than or equal to one. The outer ring of the first sealing ring 51 is larger. After fitting the outer shell 1, it serves as the first line of defense against water. Most rainwater is difficult to cross the outer ring of the cover body 52. The first sealing ring 51 is made into a profiled one with a radian, so that it can completely fit the arc-shaped outer shell 1. The inner part of the outer ring of the first sealing ring 51 adopts a wave-shaped multi-rib design. The multi-ribs 512 are concentric with the outer ring, and the multi-ribs 512 also serve as multiple lines of defense against rain. After the cover body 52 completely fits the outer shell 1, it can play a completely waterproof role. The outer shell 1 of the water tank is in a barrel shape and has a certain radian. The cover body 52 and the first sealing ring 51 both adopt a profiled radian design of the outer shell 1, so that they can better match the radian of the outer shell 1 and fit the outer shell 1 better. The radian of the cover body 52 and the first sealing ring 51 changes with the change of the radius R value of the outer shell 1.

[0066] See Figure 1 And Figure 4c , in some embodiments, at least two of the protrusions 533 of the ribs 512 have different heights. Each rib 512 plays a different protective role, and each rib 512 cooperates with each other to achieve multiple seals. After the rib 512 with a relatively high height fails, the rib 512 with a relatively low height can continue to play a sealing role.

[0067] As introduced above, there are two pipe connectors 4, and each pipe connector 4 is respectively provided with a second sealing ring 53, that is, the outer circumferences of the first pipe connector 41 and the second pipe connector 42 are respectively and independently provided with a second sealing ring 53. The structures of the two second sealing rings 53 can be the same, but the sizes match the respective sizes of the first pipe connector 41 and the second pipe connector 42 introduced above.

[0068] See Figure 1 , Figure 2 , Figures 5a to 5c , in some embodiments, the second sealing ring 53 includes a connecting portion 531 and an extending portion 532. The connecting portion 531 has a fourth mounting hole 531a, and the pipe connector 4 passes through the fourth mounting hole 531a. The extending portion 532 is fixed to the connecting portion 531 and extends in a direction away from the axis of the fourth mounting hole 531a; the extending portion 532 is provided with one of a protrusion 533 and a groove 534, and the cover body 52 is provided with the other of the protrusion 533 and the groove 534, and the extending portion 532 and the cover body 52 cooperate. The connecting portion 531 surrounds the pipe connector 4. The extending portion 532 causes the cover body 52 to abut against the second sealing ring 53 to achieve sealing.

[0069] In some embodiments, both the protrusion 533 and the groove 534 are configured to be annular. The protrusion 533 can be provided with multiple concentric circles, and the number and structure of the grooves 534 correspond to those of the grooves 534 one by one. Through the cooperation of the grooves 534 and the protrusions 533, multiple seals are achieved.

[0070] See Figure 1 , Figure 2 , Figures 6a to 6d , in some embodiments, the sealing assembly 5 further includes a backing plate 54 and a fastener 55. The backing plate 54 has a fifth mounting hole 541, and the pipe connector 4 passes through the fifth mounting hole 541. The backing plate 54 is located on the side of the second sealing ring 53 away from the first sealing ring 51. The fastener 55 fixedly connects the backing plate 54 and the first sealing ring 51. There are two fifth mounting holes 541 for avoiding the first pipe connector 41 and the second pipe connector 42. Referring to FIG. 3, the backing plate 54 is provided with a concave portion, the fifth mounting hole 541 is located at the bottom of the concave portion, and the second sealing ring 53 is located in the concave portion. The concave portion plays a role in positioning the installation of the second sealing ring 53. The backing plate 54 is a symmetric structure with respect to the center line in the length direction of the first mounting hole 11, and this structure facilitates installation. The backing plate 54 can be made of a sheet metal part.

[0071] For the water heater provided by the above technical solution, the installation sequence of its sealing assembly 5 is as follows: First, press the backing plate 54 on the working medium pipe joint 4. It can be seen that the sheet metal backing plate 54 has two fifth mounting holes 541, which respectively correspond to the first pipe joint 41 and the second pipe joint 42. The specifications of the fifth mounting holes 541 can be adjusted according to the pipe diameter of the pipe joint 4. There are also 3 screw holes on the backing plate 54, which are finally fixed and tightened with screws. Secondly, put two second rubber rings on the two pipe joints 4. Note that the second rubber ring and the pipe joint 4 are in interference fit to play a waterproof role, and the second rubber ring and the backing plate 54 are in plane contact, which can also seal and prevent water leakage after being pressed tightly. Then, hoist the outer shell 1, and first pre-assemble the first sealing ring 51 and the cover body 52, that is, put the first sealing ring 51 on the cover body 52, and then assemble them with the outer shell 1 as a whole. The cover body 52 also has three screw hole positions and two third mounting holes 521, and the installation method is the same as that of the previous backing plate 54. The two third mounting holes 521 respectively correspond to the pipe joint 4. Finally, use 3 screws to fix the first sealing ring 51, the cover body 52, the outer shell 1, and the backing plate 54 together. After the screws are tightened, the first sealing ring 51 tightly fits the outer surface of the outer shell 1 completely. The above structure has good rainproof effect and long service life of the water tank.

[0072] The embodiment of the present invention also provides a heat pump unit, including an air conditioner and the water heater provided by any technical solution of the present invention, and the refrigerant flow path of the air conditioner is in fluid communication with the refrigerant pipeline 3 of the water heater. For the heat pump unit provided by the above technical solution, the water heater thereof has good sealing performance.

[0073] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 thus cannot be understood as a limitation to the protection content of the present invention.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water heater, characterized in that, it comprises: a housing (1), the wall body is provided with a first mounting hole (11), the length direction of the first mounting hole (11) is parallel to the axial direction of the housing (1), and the length of the first mounting hole (11) is greater than the width of the first mounting hole (11); an inner tank (2), installed in the housing (1); a refrigerant pipeline (3), wound around the outer wall of the inner tank (2), and the refrigerant pipeline (3) is located in the housing (1); a pipe joint (4), fluidly connected to the end of the refrigerant pipeline (3), and the pipe joint (4) extends out of the housing (1) through the first mounting hole (11); and a sealing assembly (5), installed in the first mounting hole (11), the radian of the sealing assembly (5) matches the radian of the housing (1), and the sealing assembly (5) fits the hole wall of the first mounting hole (11) and the outer surface of the pipe joint (4); the material hardness of the sealing assembly (5) is lower than that of the housing (1) and the pipe joint (4), and the sealing assembly (5) completely surrounds the edge of the first mounting hole (11) and the outer surface of the pipe joint (4) to block the gap between the pipe joint (4) and the edge of the first mounting hole (11), so that external rainwater is difficult to enter the gap between the housing (1) and the inner tank (2); the sealing assembly (5) includes: a first sealing ring (51), installed in the first mounting hole (11); the first sealing ring (51) includes a second mounting hole (511); a cover body (52), installed in the second mounting hole (511); the cover body (52) includes a third mounting hole (521), and the pipe joint (4) extends out of the third mounting hole (521); and a second sealing ring (53), sleeved on the pipe joint (4), and clamped between the cover body (52) and the pipe joint (4); wherein, the first sealing ring (51) fits the outer wall of the housing (1), and the second sealing ring (53) fits the outer surfaces of the cover body (52) and the pipe joint (4); the sealing assembly (5) further includes: a backing plate (54), having a fifth mounting hole (541), the pipe joint (4) passes through the fifth mounting hole (541), and the backing plate (54) is located on the side of the second sealing ring (53) away from the first sealing ring (51); and a fastener (55), fixedly connecting the backing plate (54) and the first sealing ring (51); the surface of the first sealing ring (51) facing the housing (1) is provided with ribs (512), and the ribs (512) are pressed against the housing (1); at least two of the protrusions (533) of the ribs (512) have different heights; wherein, the second sealing ring (53) includes: a connecting portion (531), having a fourth mounting hole (531a), the pipe joint (4) passes through the fourth mounting hole (531a); and An extension part (532) is fixed to the connection part (531) and extends in a direction away from the axis of the fourth mounting hole (531a); one of a protrusion (533) and a groove (534) is provided on the extension part (532), and the other of the protrusion (533) and the groove (534) is provided on the cover body (52), and the extension part (532) and the cover body (52) are matched with each other.

2. The water heater according to claim 1, wherein, the hardness of the first sealing ring (51) is less than the hardness of the cover body (52).

3. The water heater according to claim 1, wherein, the hardness of the second sealing ring (53) is less than the hardness of the cover body (52).

4. The water heater according to claim 1, wherein, the rib (512) is configured to be annular.

5. The water heater according to claim 1, wherein, both the protrusion (533) and the groove (534) are configured to be annular.

6. The water heater according to claim 1, wherein, the radian of the first sealing ring (51) is consistent with the radian of the outer shell (1) at the first mounting hole (11).

7. The water heater according to claim 1, wherein, the radian of the cover body (52) is consistent with the radian of the outer shell (1) inside the first mounting hole (11).

8. The water heater according to claim 1, wherein, the pipe joint (4) includes: a first pipe joint (41) that is in fluid communication with one end of the refrigerant pipeline (3); and a second pipe joint (42) that is in fluid communication with the other end of the refrigerant pipeline (3); wherein, the first pipe joint (41) and the second pipe joint (42) are arranged along the length direction of the first mounting hole (11).

9. A heat pump unit, wherein, it includes an air conditioner and the water heater according to any one of claims 1 to 8, and the refrigerant flow path of the air conditioner is in fluid communication with the refrigerant pipeline (3) of the water heater.

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