CN211575527U - Zero cold water integral type heat pump water heater - Google Patents

Abstract

The utility model discloses a zero cold water integral type heat pump water heater improves the installation effectiveness, simplifies the pipeline trend, reduces installation occupation space. It comprises a shell, an inner container, a water tank water inlet pipe, a water tank water outlet pipe and a circulating water pump; the inner bag inlet tube and the inner bag outlet pipe all are located the upper portion of inner bag, and the play water end of inner bag inlet tube stretches into the bottom to the inner bag, still sets firmly the end cover that is located the inner bag top in the shell, and water tank inlet tube, water tank outlet pipe and circulating water pump all establish on the end cover. The distance between the circulating water pump and the water inlet pipe of the water tank is short, the distance between the water inlet pipe of the inner container and the water outlet pipe of the inner container is short, the trend complexity of the connecting pipeline during installation is simplified, and the occupied space of the connecting pipeline during installation is reduced.

Description

Zero cold water integral type heat pump water heater

Technical Field

The utility model belongs to the technical field of the water heater, concretely relates to zero cold water integral type heat pump water heater's institutional advancement.

Background

The working principle of the heat pump water heater is that low-temperature low-pressure refrigerant liquid in an evaporator absorbs heat in air to gasify the refrigerant into low-temperature low-pressure refrigerant gas, then the refrigerant is compressed by a compressor to perform work and then is pressurized and heated to become high-temperature high-pressure gas, the high-temperature high-pressure gas is subjected to heat exchange with water in a water tank by a heat exchanger in the water tank of the heat pump water heater, the refrigerant is changed into low-temperature high-pressure liquid, the low-temperature low-pressure liquid is throttled by a throttling device to enter the evaporator for repeated circulation, and the water temperature is heated by the high-temperature heat energy compressed by the compressor. The traditional electric water heater and the traditional gas water heater obtain heat energy by consuming gas and electric energy, while the heat pump water heater achieves the purpose of heating water by absorbing heat in air, and can absorb heat energy which is about three times of electric energy to heat water under the condition of consuming the same electric energy, thereby having the characteristics of energy saving and high efficiency and being gradually widely used.

The heat pump water heater mainly comprises a split type air energy unit and an integrated type air energy unit in the market, wherein the split type heat pump water heater is an air energy unit with a main machine and a water tank which are separated into two parts, the appearance of the main machine is similar to that of an air conditioner external machine, and the water tank is mostly a cylinder or a cuboid; the integrated heat pump water heater is an air energy unit with a main machine and a water tank integrated, wherein the main machine is generally arranged on the water tank and is integrally in a cylindrical shape.

For the integrated heat pump water heater, the host computer of top is usually fixed on the end cover at the top of the water tank shell below by the bottom edge of the housing, the compressor and the condensation heat exchanger pipeline of the host computer are arranged on the end cover, the inner container is positioned in the water tank, the inner container is provided with an inner container water inlet pipe and an inner container water outlet pipe, the water tank side is provided with a water tank water inlet pipe and a water tank water outlet pipe, a water tank water inlet and a water tank water outlet are correspondingly formed on the water tank shell, the water outlet end of the water tank water inlet pipe is connected with the water inlet end of the inner container water inlet pipe, the water outlet end of the inner container water outlet pipe is connected with the water inlet end of the water tank water outlet.

Because inner bag outlet pipe and water tank outlet pipe have the certain distance, usually through one section tube coupling, can persist hot water in this section pipeline when not using hot water like this, through a period of time, the hot water of persistence cools down gradually and becomes cold water, this part of cold water need be discharged earlier when the user reuses hot water, cause the user can not use hot water at once, also cause the waste of water resource simultaneously, and the long cold water of persisting of length of this section pipeline can be more, the user waits for hot water time just also for a long time, the waste of water resource is more serious. For solving the problem, realize that the heat pump water heater goes out hot water immediately when using, integral type heat pump water heater with zero cold water function has appeared, add circulating water pump promptly on integral type heat pump water heater system water tank inlet tube, circulating water pump connects on the water tank outlet pipe through a return pipe simultaneously, when circulating water pump opened, make the cold water that persists in the connecting line between inner bag outlet pipe and the water tank outlet pipe pass through the water tank outlet pipe, the return pipe, circulating water pump pours into the water tank inner bag into again, and export hot water to the pipeline in through pressure, realize instant hot water when the user uses.

Among the prior art, the integral type heat pump water heater that has circulating water pump, circulating water pump are located the outside of water heater usually, through pipe connection on the water tank inlet tube, and the water heater needs in addition on-the-spot circulating water pump of installing alone when user department installs, and the pipeline is arranged and is moved towards complicacy in the installation, and occupation space is big, and the installation effectiveness is low, and has the potential safety hazard that the user contacted circulating water pump. In order to solve the problem, a zero-cold water integrated heat pump water heater with a circulating water pump built in an end cover of a water tank is provided, and the circulating water pump is connected to a water inlet pipeline of the water tank. Need not to install circulating water pump alone in addition, the installation effectiveness is greatly improved, user contact circulating water pump has also been avoided, however because among the prior art water tank outlet pipe and water tank inlet tube all are located the side of water tank, and water tank outlet pipe position leans on, be close to the host computer housing, water tank inlet pipe position leans on down, be close to the bottom of water tank, the position that the inner bag inlet tube set up on the inner bag is close the parallel and level with the water tank inlet tube, the inner bag outlet pipe sets up the position that is close the parallel and level with the water tank outlet pipe on the inner bag, then circulating water pump and water tank inlet tube distance are far away, inner bag inlet tube and inner bag outlet pipe are also far away, then do not effectively solve pipeline trend complexity and the big.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the above-mentioned technical problem that zero cold water integral type heat pump water heater exists among the prior art, provide a zero cold water integral type heat pump water heater, improve the installation effectiveness, simplify the pipeline trend, reduce installation occupation space.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a zero cold water integrated heat pump water heater comprising:

the water tank comprises a shell, an inner container arranged in the shell, and a water tank water inlet pipe and a water tank water outlet pipe which are arranged in the shell and positioned outside the inner container, wherein the top end of the shell is provided with an end cover, and the inner container is provided with the inner container water inlet pipe and the inner container water outlet pipe;

a host comprising a housing, the housing connected with the end cap;

the circulating water pump is used for realizing zero cold water discharge and is connected with the water inlet pipe of the water tank;

the water tank water inlet pipe, the water tank water outlet pipe and the circulating water pump are all arranged on the end cover, the cover is provided with a water inlet and a water outlet, the water inlet end of the water tank water inlet pipe is matched with the water inlet, and the water outlet end of the water tank water outlet pipe is matched with the water outlet.

And a fixed support is fixedly arranged on the end cover, and the circulating water pump is arranged on the fixed support.

The fixed bolster includes fixed part and relative the fixed part is upwards buckled the installation department that extends, the fixed part links firmly on the end cover, circulating water pump installs on the installation department.

The water tank inlet pipe and the water tank outlet pipe are fixedly connected into a whole through a connecting part, and the connecting part is fixedly connected to the fixed support.

Adapting unit includes the first sleeve portion and the second sleeve portion at both ends and connects first sleeve portion, second sleeve portion intermediate junction portion as an organic whole, first sleeve portion cover is established the inlet end department of water tank inlet tube and with the inlet end of water tank inlet tube links firmly as an organic whole, second sleeve portion cover is established the outlet end department of water tank outlet pipe and with the outlet end of water tank outlet pipe links firmly as an organic whole, intermediate junction portion links firmly on the fixed bolster.

And a flanging part which is bent upwards and extends relative to the fixing part is formed at one end of the fixing part, and the connecting part is fixedly connected to the flanging part.

Adapting unit includes the first sleeve portion and the second sleeve portion at both ends and connects first sleeve portion, second sleeve portion intermediate junction portion as an organic whole, first sleeve portion cover is established the inlet end department of water tank inlet tube and with the inlet end of water tank inlet tube links firmly as an organic whole, second sleeve portion cover is established the outlet end department of water tank outlet pipe and with the outlet end of water tank outlet pipe links firmly as an organic whole, intermediate junction portion links firmly on the turn-ups portion.

The water inlet end department downwarping of water tank inlet tube is L shape, the water outlet end department downwarping of water tank outlet pipe is L shape, first sleeve pipe portion for with the L shape of the water inlet end department looks adaptation of water tank inlet tube, second sleeve pipe portion for with the L shape of the water outlet end department looks adaptation of water tank outlet pipe.

The cover comprises a cover body and a maintenance cover, wherein the cover body is in a cylindrical shape with openings at two ends, the maintenance cover is used for sealing the top end opening of the cover body, and the water inlet and the water outlet are formed in the cover body.

The maintenance cover is clamped on the top end of the housing body.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

1. the circulating water pump is positioned in the water heater and integrated with the water heater, when the water heater is installed at a user, the circulating water pump does not need to be installed separately, so that the installation efficiency is greatly improved, the user is prevented from contacting the circulating water pump, and the use safety is improved;

2. the inner container water inlet pipe and the inner container water outlet pipe on the inner container are all positioned at the upper part of the inner container, and the water tank water inlet pipe, the water tank water outlet pipe and the circulating water pump are all arranged on the end cover at the top end of the water tank shell, so that the circulating water pump and the water tank water inlet pipe are closer, and the inner container water inlet pipe and the inner container water outlet pipe are also closer, therefore, the trend complexity of a connecting pipeline during installation is simplified, and the occupied space of the connecting pipeline during installation is reduced;

3. the inner container water inlet pipe extends into the bottom of the inner container, so that cold water is discharged from the bottom of the inner container to the inner container, the cold water is under hot water, and the hot water is conveniently discharged from the inner container water outlet under water pressure.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the zero-cold water integrated heat pump water heater of the present invention;

FIG. 2 is a schematic view of the inner container structure in the embodiment of the zero-cold water integrated heat pump water heater of the present invention;

FIG. 3 is a schematic structural diagram of the zero-cold water integrated heat pump water heater of the present invention with the housing omitted;

FIG. 4 is an enlarged view of the structure of the portion I of FIG. 3;

fig. 5 is a schematic structural view of a fixing bracket in an embodiment of the zero-cold water integrated heat pump water heater of the present invention;

fig. 6 is an integrated structural schematic diagram of a water tank inlet pipe, a water tank outlet pipe and a connecting component in the embodiment of the zero-cold water integrated heat pump water heater of the present invention.

Reference numerals: 1. a zero-cold water integrated heat pump water heater; 100. a water tank; 110. a housing; 111. an end cap; 120. an inner container; 121. a liner water inlet pipe; 121A and a water inlet end; 121B, a water outlet end; 122. a water outlet pipe of the inner container; 122A, a water outlet end; 130. a water inlet pipe of the water tank; 131. a water outlet end; 132. a water inlet end; 140. a water outlet pipe of the water tank; 141. a water inlet end; 142. a water outlet end; 200. a host 210, a housing; 211. a housing body; 212. maintaining the cover; 220. a water inlet; 230. a water outlet; 300. a water circulating pump; 400. Fixing a bracket; 410410, a fixed part; 420420, a mounting part; 430430, a flanging part; 500. a connecting member; 510. a first sleeve portion; 520. a second sleeve portion; 530. an intermediate connecting portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 4, a zero-cold-water heat pump water heater 1 of the present embodiment includes a water tank 100, a main unit 200, and a circulating water pump 300; the water tank 100 includes a case 110, an inner container 120, a water tank inlet pipe 130, and a water tank outlet pipe 140; the housing 110 is at least used for forming the appearance of the water tank 100, and the top end thereof is provided with an end cover 111; the inner container 120 is arranged inside the shell 110, and the inner container 120 is provided with an inner container water inlet pipe 121 and an inner container water outlet pipe 122; the water tank inlet pipe 130 and the water tank outlet pipe 140 are both arranged in the shell 110 and positioned outside the inner container 120; the main body 200 is installed above the water tank 100, and includes a housing 210, and the housing 210 is connected with the end cap 111; the circulation water pump 300 for realizing zero cold water discharge is connected to the water tank inlet pipe 130.

The specific connection among the water tank inlet pipe 130, the water tank outlet pipe 140, the liner inlet pipe 121 and the liner outlet pipe 122 is the same as that in the prior art, specifically, the water outlet end 131 of the water tank inlet pipe 130 is connected with the water inlet end 121A of the liner inlet pipe 121 through a pipeline, the water inlet end 132 of the water tank inlet pipe 130 is externally connected with a cold water inlet pipeline to inject cold water into the liner 120, the water inlet end 141 of the water tank outlet pipe 140 is connected with the water outlet end 122A of the liner outlet pipe 122, and the water outlet end 142 of the water tank outlet pipe 140 is externally connected with a hot water pipeline to provide hot water; the principle that the circulating water pump 300 realizes zero cold water discharge is the same as the prior art, and is not described herein again, in this embodiment, as shown in fig. 4, the circulating water pump 300 is specifically connected to the water outlet end 131 of the water tank inlet pipe 130, the water tank inlet pipe 130 is connected to the circulating water pump 300, and then the circulating water pump 300 is connected to the water inlet end 121A of the liner inlet pipe 121 through a pipeline.

Different from the prior art, as shown in fig. 2 and 4, in this embodiment, the liner water inlet tube 121 and the liner water outlet tube 122 are both located at the upper portion of the liner 120, the water outlet end 21B of the liner water inlet tube 21 extends into the bottom of the liner 120, the housing 10 is further fixedly provided with an end cover 111 located above the liner 120, the water tank water inlet tube 130, the water tank water outlet tube 140 and the circulating water pump 300 are all arranged on the end cover 111, the housing 210 is provided with a water inlet 220 and a water outlet 230, the water inlet end 132 of the water tank water inlet tube 130 is matched with the water inlet 220, and the water outlet end 142 of the water tank water outlet tube 140 is matched. Then, in this embodiment, the water tank inlet pipe 130, the water tank outlet pipe 140 and the water circulating pump 300 are all disposed on the end cover 111, that is, above the inner container 120, so as to be closer to the inner container inlet pipe 121 and the inner container outlet pipe 122, the distance between the water circulating pump 300 and the water tank inlet pipe 130, and the distance between the inner container inlet pipe 121 and the inner container outlet pipe 122 are both greatly reduced, when the water heater is installed, the trend of the pipeline can be simplified, the complexity of pipeline connection is reduced, and the occupied space of the connecting pipeline during installation is reduced, meanwhile, as shown in fig. 2, the inner container inlet pipe 121 extends into the bottom of the inner container 120, so that cold water is discharged into the inner container from the bottom of the inner container 120, and cold water is located under hot water, so that hot water is discharged from the inner container outlet pipe 122 under.

Since the circulating water pump 300 vibrates during operation, in order to prevent water leakage at the installation position due to excessive vibration, as shown in fig. 4, a fixing bracket 400 is fixedly arranged on the end cover 111, and the circulating water pump 300 is arranged on the fixing bracket 400. The circulating water pump 300 does not directly contact the end cover 111, and the fixing bracket 400 plays a certain role in buffering the vibration of the circulating water pump 300, so that the adverse effect caused by the vibration is reduced.

To further prevent the vibration of the circulating water pump 300 from being transmitted to the end cover 111, referring to fig. 5 in combination with fig. 4, in this embodiment, the fixing bracket 400 includes a fixing portion 410 and a mounting portion 420 extending and bending upward relative to the fixing portion 410, the fixing portion 410 is fixedly connected to the end cover 111 by a screw, and the circulating water pump 300 is mounted on the mounting portion 420 by a screw. The mounting part 420 is bent upward and extended, so that the circulating water pump 300 can be far away from the end cover 111 as far as possible when mounted on the mounting part 420, the circulating water pump 300 is equivalently mounted in a hanging manner, and the mounting part 420 further weakens the vibration of the circulating water pump 300.

Because the water inlet pipe 130 of the water tank is externally connected with the cold water inlet pipeline, the water outlet pipe 140 of the water tank is externally connected with the hot water pipeline, and the pipelines are usually connected by screw threads, taking the water inlet pipe 130 of the water tank as an example, the water inlet end 32 of the water inlet pipe is provided with internal screw threads, the corresponding end of the externally connected cold water pipeline is provided with external screw threads, and the externally connected cold water pipeline is screwed with the water inlet pipe 130 of the water tank in a screw thread fit manner, because when the externally connected cold water pipeline is screwed, the water inlet end of the water inlet pipe 130 of the water tank is inevitably driven to have a rotation trend, namely the water inlet pipe 130 of the water tank is possibly screwed to generate deformation, which affects the reliability of the connection of the water inlet pipe 130 of the water tank and the circulating water pump 300, in order to solve the problem, the water inlet pipe 130, fix on fixed bolster 400 together, the degree of freedom of limiting water tank inlet tube 130 and water tank outlet pipe 140 to the greatest extent as far as possible, be convenient for with the connection of external pipeline, guarantee the use reliability of water tank inlet tube 130 and water tank outlet pipe 140 simultaneously, prevent to be twisted when being connected with external pipeline and move the deformation. Specifically, the water tank inlet pipe 130, the water tank outlet pipe 140 and the connecting part 500 may be integrally formed, or may be separately formed, and are fixedly connected as a whole by welding, or may be integrally formed by other methods, which is not limited herein.

In order to fix the connection unit 500, a flange portion 430 bent and extended upward relative to the fixing portion 410 is formed at one end of the fixing portion 410 of the fixing bracket 400, and the connection unit 500 is fixedly connected to the flange portion 430, specifically, by fastening with a screw. Since the circulating water pump 300 is installed on the fixing bracket 400, the circulating water pump 300 is connected to the water tank inlet pipe 130, and the connection member 500 is also connected to the water tank inlet pipe 130, the connection member 500 is also fixedly connected to the fixing bracket 400 through the flange portion 430, which is beneficial to ensuring the compactness of the layout of each structural component on the end cover 111.

As a specific embodiment, referring to fig. 6 in combination with fig. 4, the connection member 500 includes a first sleeve portion 510 and a second sleeve portion 520 at two ends thereof, and an intermediate connection portion 530 connecting the first sleeve portion 510 and the second sleeve portion 520 into a whole, the first sleeve portion 510 is sleeved on the water inlet end 132 of the water tank inlet pipe 130 and is fixedly connected with the water inlet end 132 of the water tank inlet pipe 130 into a whole, the second sleeve portion 520 is sleeved on the water outlet end 142 of the water tank outlet pipe 140 and is fixedly connected with the water outlet end 142 of the water tank outlet pipe 140 into a whole, and the intermediate connection portion 530 is fixedly connected to the flanging portion 430. The first sleeve pipe portion 510 and the second sleeve pipe portion 520 are fixedly connected with the water outlet end 142 of the water tank outlet pipe 140 of the water inlet end 132 of the water tank inlet pipe 130 in a sleeved mode, the area of the fixed connection surface can be increased, and the reliability of fixed connection is improved.

Of course, the intermediate connecting portion 530 may also be directly connected to the fixing bracket 400, for example, connected to the mounting portion 420 of the fixing bracket 400, or the fixing portion 410 may be determined according to the specific type of the water tank and the size of the mounting space, and is not limited herein.

Further, as shown in fig. 4 and 5, the water inlet end 132 of the water inlet pipe 130 is bent downward to form an L-shape, the water outlet end 142 of the water outlet pipe 140 is bent downward to form an L-shape, the first sleeve portion 510 is an L-shape adapted to the water inlet end 132 of the water inlet pipe 130, and the second sleeve portion 520 is an L-shape adapted to the water outlet end 142 of the water outlet pipe 140. The water inlet end 132 of the water tank inlet pipe 130 and the water outlet end 142 of the water tank outlet pipe 140 are both bent downward to reduce the positions of the water inlet end 132 of the water tank inlet pipe 130 and the water outlet end 142 of the water tank outlet pipe 140, so that the height of the connecting part 500 can be reduced, the size of the connecting part is reduced, the occupation of the installation space is reduced, and the integrated design of the water tank inlet pipe 130, the water tank outlet pipe 140 and the connecting part 500 and the fixation of the connecting part 500 on the fixing support 400 are facilitated.

For the convenience of maintenance of the main unit 200, the housing 210 is generally divided into a top maintenance cover 212 and a circumferential housing body 211, the housing body is in a cylindrical shape with two open ends, the top opening is closed by the maintenance cover 212, and the bottom opening is matched with the end cover 111 of the water tank housing 100 to form a complete main unit cavity. In this embodiment, the maintenance cover 212 is clamped on the top end of the housing body 211 to facilitate the maintenance of the devices inside the host by dismounting, and the water inlet 220 and the water outlet 230 are specifically located on the housing body 211, so that the distance between the water inlet end 132 of the water inlet pipe 30 and the water inlet 220 is as small as possible, and the distance between the water outlet end 142 of the water outlet pipe 140 of the water tank and the water outlet 230 is as small as possible, thereby further simplifying the pipe arrangement of the pipeline.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims (10)

1. A zero cold water integrated heat pump water heater comprising:

the water tank comprises a shell, an inner container arranged in the shell, and a water tank water inlet pipe and a water tank water outlet pipe which are arranged in the shell and positioned outside the inner container, wherein the top end of the shell is provided with an end cover, and the inner container is provided with the inner container water inlet pipe and the inner container water outlet pipe;

a host comprising a housing, the housing connected with the end cap;

the circulating water pump is used for realizing zero cold water discharge and is connected with the water inlet pipe of the water tank;

it is characterized in that the preparation method is characterized in that,

the water tank water inlet pipe, the water tank water outlet pipe and the circulating water pump are all arranged on the end cover, the cover is provided with a water inlet and a water outlet, the water inlet end of the water tank water inlet pipe is matched with the water inlet, and the water outlet end of the water tank water outlet pipe is matched with the water outlet.

2. The zero cold water integrated heat pump water heater of claim 1,

and a fixed support is fixedly arranged on the end cover, and the circulating water pump is arranged on the fixed support.

3. The zero cold water integrated heat pump water heater of claim 2,

the fixed bolster includes fixed part and relative the fixed part is upwards buckled the installation department that extends, the fixed part links firmly on the end cover, circulating water pump installs on the installation department.

4. The zero cold water integrated heat pump water heater of claim 3,

the water tank inlet pipe and the water tank outlet pipe are fixedly connected into a whole through a connecting part, and the connecting part is fixedly connected to the fixed support.

5. The zero cold water integrated heat pump water heater of claim 4,

adapting unit includes the first sleeve portion and the second sleeve portion at both ends and connects first sleeve portion, second sleeve portion intermediate junction portion as an organic whole, first sleeve portion cover is established the inlet end department of water tank inlet tube and with the inlet end of water tank inlet tube links firmly as an organic whole, second sleeve portion cover is established the outlet end department of water tank outlet pipe and with the outlet end of water tank outlet pipe links firmly as an organic whole, intermediate junction portion links firmly on the fixed bolster.

6. The zero cold water integrated heat pump water heater of claim 4,

and a flanging part which is bent upwards and extends relative to the fixing part is formed at one end of the fixing part, and the connecting part is fixedly connected to the flanging part.

7. The zero cold water integrated heat pump water heater of claim 6,

adapting unit includes the first sleeve portion and the second sleeve portion at both ends and connects first sleeve portion, second sleeve portion intermediate junction portion as an organic whole, first sleeve portion cover is established the inlet end department of water tank inlet tube and with the inlet end of water tank inlet tube links firmly as an organic whole, second sleeve portion cover is established the outlet end department of water tank outlet pipe and with the outlet end of water tank outlet pipe links firmly as an organic whole, intermediate junction portion links firmly on the turn-ups portion.

8. The zero cold water integrated heat pump water heater of claim 5 or 7,

the water inlet end department downwarping of water tank inlet tube is L shape, the water outlet end department downwarping of water tank outlet pipe is L shape, first sleeve pipe portion for with the L shape of the water inlet end department looks adaptation of water tank inlet tube, second sleeve pipe portion for with the L shape of the water outlet end department looks adaptation of water tank outlet pipe.

9. The zero cold water integrated heat pump water heater of claim 8,

the cover comprises a cover body and a maintenance cover, wherein the cover body is in a cylindrical shape with openings at two ends, the maintenance cover is used for sealing the top end opening of the cover body, and the water inlet and the water outlet are formed in the cover body.

10. The zero cold water integrated heat pump water heater of claim 9,

the maintenance cover is clamped on the top end of the housing body.

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