CN215571261U - Water tank and heat pump water heater - Google Patents
Water tank and heat pump water heater Download PDFInfo
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- CN215571261U CN215571261U CN202120701959.3U CN202120701959U CN215571261U CN 215571261 U CN215571261 U CN 215571261U CN 202120701959 U CN202120701959 U CN 202120701959U CN 215571261 U CN215571261 U CN 215571261U
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Abstract
The utility model discloses a water tank and a heat pump water heater, wherein the water tank comprises an inner container and an outer sleeve of the inner container, wherein the outer sleeve of the inner container is sleeved outside the inner container and forms a closed interlayer space with the outer surface of the inner container; the partition board is arranged in the interlayer space and divides the interlayer space into at least two subspaces, and a through hole is formed in the partition board; each subspace is respectively communicated with at least one port, at least one subspace is connected with the first main pipe through the port of the subspace, and at least one subspace is connected with the second main pipe through the port of the subspace; when a plurality of subspaces are simultaneously connected to the second manifold, the tank further comprises a control valve for controlling the communication of the second manifold with any one of the subspaces. According to the water tank disclosed by the utility model, the interlayer space is formed between the inner container outer sleeve and the inner container, the heating medium can be circulated into the interlayer space and directly contacted with the inner container, the contact area is large, and the heat exchange efficiency can be improved to the ground.
Description
Technical Field
The utility model belongs to the technical field of water heaters, and particularly relates to a water tank capable of realizing closed circulation and a heat pump water heater.
Background
The heat pump water heater in the market usually works in such a way that heating is started when cold water is detected at the water tank 1/2 or 1/3, hot water is ensured in the water tank, the running state of the heat pump water heater unit is basically the hot water at the upper part of the water tank and the cold water at the lower part of the water tank, and the water temperature is layered greatly. Under the condition that the water temperature stratification is large, the condensing temperature is high due to the influence of high water temperature on the upper part of the water tank, and the heat exchange efficiency of the whole liner is relatively poor.
When the hot water in the water tank is used up, one water tank is heated for several hours, and if a user needs water urgently, the user waits for a long time when the heat pump heats the whole water tank.
SUMMERY OF THE UTILITY MODEL
The utility model provides a water tank aiming at the technical problem of low heat exchange efficiency of the existing heat pump water heater, and can solve the problem.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
a water tank, comprising an inner container, further comprising:
the liner outer sleeve is sleeved on the outer side of the liner and forms a closed interlayer space with the outer surface of the liner;
the partition plate is arranged in the interlayer space and divides the interlayer space into at least two subspaces, and a through hole is formed in the partition plate;
each subspace is respectively communicated with at least one port, at least one subspace is connected with the first main pipe through the port of the subspace, and at least one subspace is connected with the second main pipe through the port of the subspace;
when a plurality of subspaces are simultaneously connected to the second manifold, the tank further comprises a control valve for controlling the communication of the second manifold with any one of the subspaces.
Furthermore, the partition plate partitions the interlayer space into two parts along the length direction of the inner container, namely a first subspace and a second subspace;
the inner container outer sleeve is provided with:
a first port in communication with the first subspace for connection to the first manifold;
a second port in communication with the first subspace for connection to a first branch;
a third port communicating with the second subspace for connecting a second branch pipe;
the second main pipe is respectively connected with the first branch pipe and the second branch pipe;
and the control valve is used for controlling the second main pipe to be communicated with the first branch pipe or the second main pipe to be communicated with the second branch pipe.
Furthermore, the baffle is of an annular sheet structure, the inner side edge of the baffle is fixed with the outer side wall of the inner container, and the outer side edge of the baffle is fixed with the inner side wall of the outer sleeve of the inner container.
Furthermore, the inner container outer sleeve is of a sleeve-shaped structure, and the edges of the two ends of the inner container outer sleeve bend towards the inner container and are fixed with the outer side wall of the inner container in a sealing mode.
Furthermore, the outer sleeve of the inner container is made of stainless steel or enamel.
Further, the through holes are provided in plurality, and the total area of all the through holes is not smaller than the inner flow cross-sectional area of the first header pipe.
Further, the first port and the third port are diagonally disposed in the interlayer space.
Further, the first port and the second port are diagonally disposed in the first subspace.
Furthermore, the control valve is a three-way valve, and three ends of the three-way valve are respectively communicated with the second main pipe, the first branch pipe and the second branch pipe.
The utility model also provides a heat pump water heater, which comprises a first heat exchanger, a compressor, a second heat exchanger and a booster pump, wherein the first heat exchanger is provided with a first heat exchange flow channel and a second heat exchange flow channel, the first heat exchange flow channel is sequentially connected with the compressor and the second heat exchanger, the heat pump water heater also comprises any one of the water tanks, the second heat exchange flow channel is respectively connected with the first main pipe and the second main pipe, and the booster pump is arranged between the second heat exchange flow channel and the first main pipe or between the second heat exchange flow channel and the second main pipe.
Compared with the prior art, the utility model has the advantages and positive effects that:
according to the water tank disclosed by the utility model, the interlayer space is formed between the inner container outer sleeve and the inner container, the heat exchange medium can be circulated into the interlayer space and directly contacted with the inner container, the contact area is large, and the heat exchange efficiency can be improved to the ground.
Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken 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 are briefly introduced 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 based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of one embodiment of a water tank according to the present invention;
FIG. 2 is a schematic view of a portion of the separator of FIG. 1;
fig. 3 is a schematic system diagram of an embodiment of the heat pump water heater according to the present invention.
In fig. 1:
15. a water tank; 151. an inner container; 152. an inner container and an outer sleeve; 1521. a first port; 1522. a second port; 1523. a third port; 153. an interlayer space; 1531. a first subspace; 1532. a second subspace; 154. a partition plate; 16. a first header pipe; 17. a first branch pipe; 18. a second branch pipe; 19. a second manifold; 20. a water inlet pipe; 21. a water outlet pipe;
in fig. 2:
154. a partition plate; 155. a through hole;
in fig. 3:
11. a first heat exchanger; 12. a compressor; 13. a second heat exchanger; 14. a booster pump; 15. a water tank; 151. an inner container; 152. an inner container and an outer sleeve; 1521. a first port; 1522. a second port; 1523. a third port; 153. an interlayer space; 1531. a first subspace; 1532. a second subspace; 154. a partition plate; 155. a through hole; 16. a first header pipe; 17. a first branch pipe; 18. a second branch pipe; 19. a second manifold; 20. a water inlet pipe; 21. a water outlet pipe; 22. a three-way valve; 23. an expansion valve.
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 examples.
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", "left", "right", "vertical", "horizontal", "inner", "outer", 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example one
The heat pump water heater absorbs low-temperature heat in a heat source, the low-temperature heat is gasified through a cold medium, then the low-temperature heat is compressed by a compressor and then is pressurized and heated, then the high-temperature heat is converted by a heat exchanger to supply water for heating, and the water temperature is heated through the compressed high-temperature heat.
The heat pump water heater exchanges heat through a medium, so that the heat pump water heater does not need an electric heating element to be in direct contact with water in a water tank, the electric leakage danger of the electric water heater is avoided, the possible explosion and poisoning dangers of the gas water heater are also prevented, the air pollution caused by exhaust gas discharged by the gas water heater is more effectively controlled, the defects that the solar water heater is heated by sunlight and is inconvenient to install are overcome, and the heat pump water heater can be placed at home or outdoors. After the water stored in the solar water heater is used up, hot water is difficult to generate immediately, if the solar water heater is electrically heated, a long time is needed, and the heat pump water heater can be operated for 24 hours in all weather under pressure. The common practice of the heat pump water heater in the current market is to start heating when cold water is detected at the water tank 1/2 or 1/3, so as to ensure that hot water exists in the water tank, and the running state of the heat pump water heater unit is basically that the hot water at the upper part of the water tank and the cold water at the lower part of the water tank are separated into layers with large water temperature. Under the condition that the water temperature stratification is large, the condensation temperature is high due to the influence of high water temperature on the upper part of the water tank, and the technical problem that the heat exchange efficiency of the whole liner is relatively poor exists.
The heat pump water heater in the present application performs a heating cycle of a heat pump by using a compressor, a condenser, an expansion valve, and an evaporator. The heating cycle comprises a series of processes involving compression, condensation, expansion and evaporation, and the removal of heat to a medium being conditioned and heat exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to a heat exchange medium passing through the condenser through a condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, absorbs heat from the surrounding environment, and returns the refrigerant gas in a high-temperature low-pressure state to the compressor. The evaporator can achieve energy transfer by utilizing latent heat of evaporation of the refrigerant to exchange heat with the ambient environment.
The heat pump water heater also comprises a set of circulation loop of heat exchange medium, the condenser is provided with two heat exchange flow channels, one heat exchange flow channel is connected in the circulation loop of the refrigerant, and the other heat exchange flow channel is connected in the circulation loop of the heat exchange medium. The heat exchange medium absorbs heat released by refrigerant circulating to the condenser in the condenser, and circulates to the water tank under the driving of the booster pump to heat water.
Referring to fig. 1 to 3, the heat pump water heater in the present embodiment includes a first heat exchanger 11, a compressor 12, a second heat exchanger 13, a booster pump 14, and a water tank 15, where the first heat exchanger 11 has a first heat exchange flow passage and a second heat exchange flow passage (not shown), the first heat exchange flow passage is connected to the compressor 12 and the second heat exchanger 13 in sequence, and refrigerant circulates between the first heat exchanger 11 and the second heat exchanger 13. Because this application is heat pump water heater, consequently first heat exchanger 11 is as the condenser all the time, and when the high-pressure refrigerant circulation of high temperature was to the first heat transfer runner of first heat exchanger 11, heat exchange was carried out with the heat exchange medium in the second heat transfer runner in first heat exchanger 11, and the heat shifts to in the heat exchange medium.
The refrigerant circulation circuit is provided with an expansion valve 23 disposed between the first heat exchanger 11 and the second heat exchanger 13, and the expansion valve 23 expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the first heat exchanger 11 into a low-pressure liquid-phase refrigerant and circulates to the second heat exchanger 13 to continue absorbing heat.
The heat exchange medium in this embodiment is liquid, and may be water, antifreeze or other heat-conducting liquid with similar functions.
The water tank 15 in this embodiment includes an inner container 151 and an inner container jacket 152, the inner container jacket 152 is sleeved outside the inner container 151, and forms a closed interlayer space 153 with the outer surface of the inner container 151; the water tank 15 further comprises a partition plate 154, the partition plate 154 is arranged in the interlayer space 153 to partition the interlayer space 153 into at least two subspaces, and a through hole 155 is formed in the partition plate 154;
each subspace is in communication with at least one port, at least one subspace being connected by its port to the first manifold 16 and at least one subspace being connected by its port to the second manifold 19.
Every two adjacent subspaces are communicated through the through holes 155, so all the subspaces are communicated, one of the first manifold 16 and the second manifold 19 is used for circulating the heat exchange medium, and the other one is used for circulating the heat exchange medium, so that the heat exchange medium is circulated in the interlayer space 153.
When a plurality of sub-spaces are simultaneously connected to the second manifold 19, the tank 15 further comprises a control valve for controlling the communication of the second manifold 19 to any one of the sub-spaces.
In this embodiment, the interlayer space 153 is divided into two subspaces by using one partition plate 154. The first subspace 1531 and the second subspace 1532, respectively, are formed in the partition 154, and a through hole 155 is formed to communicate the first subspace 1531 and the second subspace 1532.
The inner bag casing 152 is provided with a first port 1521, a second port 1522 and a third port 1523, the first port 1521 is communicated with the first subspace 1531, and the first port 1521 is used for connecting the first main pipe 16; the second port 1522 is communicated with the first subspace 1531, and the second port 1522 is used for connecting the first branch pipe 17; the third port 1523 communicates with the second subspace 1532 for connecting the second branch 18.
The second manifold 19 is connected to the first branch pipe 17 and the second branch pipe 18, respectively.
The control valve is used to control the communication of the second manifold 19 with the first branch 17 or the communication of the second manifold 19 with the second branch 18.
The first manifold 16 is connected with one end of the second heat exchange flow channel, the second manifold 19 is connected with the other end of the second heat exchange flow channel, and under the driving of the booster pump 14, the heat exchange medium enters the interlayer space 153 from the first manifold 16 or enters the interlayer space 153 through the second manifold 19 for heat exchange with the water in the inner container 151.
The heat pump water heater in the embodiment is provided with a control valve for controlling the communication between the second manifold 19 and the first branch pipe 17 or the communication between the second manifold 19 and the second branch pipe 18. When the second header pipe 19 communicates with the first branch pipe 17, the heat exchange medium passes through only the first subspace 1531, that is, the heat exchange medium can heat only the water in the inner container 151 corresponding to the inside of the first subspace 1531.
When the second header pipe 19 is communicated with the second branch pipe 18, the heat exchange medium enters the first subspace 1531 and then enters the second subspace 1532 through the through hole 155 of the partition 154, that is, the heat exchange medium can heat the water in the inner container 151 corresponding to the inner side of the interlayer space 153. Namely, the full-liner heating is realized.
The control valve may be implemented by using a three-way valve 22 as shown in fig. 3, and three ends of the three-way valve 22 are connected to the second header pipe 19, the first branch pipe 17, and the second branch pipe 18, respectively. The three-way valve 22 may be controlled by a control module of the heat pump water heater to communicate the second manifold 19 with the first branch 17 or to communicate the second manifold 19 with the second branch 18.
In this embodiment, the heat exchange medium is introduced into the sandwiched space 153 from the first header pipe 16.
Preferably, the first subspace 1531 is located above the inner container 153, and the second subspace 1531 is located below the inner container 153.
When the heat exchange medium only passes through the first subspace 1531, the heat exchange medium only heats the water at the upper part of the inner container 151, and when a user urgently needs hot water, the user selects to heat the water at the upper part of the inner container 151, so that the heat of the heat exchange medium can be concentrated to heat the water at the upper part of the inner container 151, and the function of rapidly heating and supplying hot water is realized.
When the user does not need water and the water temperature is lower than the set temperature, the full bladder heating can be carried out to reach the water temperature required by the user.
The flow path of the heat exchange medium at the water tank end in the scheme is arranged outside the inner container 151, so that the problem of easy scaling of the existing built-in coil pipe is solved, and the technical problem of reduction of heat exchange efficiency caused by scaling can be further avoided.
In addition, because the cylindrical interlayer space 153 formed by the inner container 151 and the inner container outer sleeve 152, the heat exchange medium can be in direct contact with the outer side wall of the inner container 151, the contact area is large, and the technical problem of low heat exchange efficiency of the external coil can be solved.
The partition 154 partitions the interlayer space 153 into an upper portion and a lower portion along the length direction of the inner container 151, wherein the first subspace 1531 is located at the upper end, and the second subspace 1532 is located at the lower end.
The fixing position of the partition 154 in the interlayer space 153 is related to the amount of heating water, and the partition 154 is arranged according to the amount of heating water required for half-courage instant heating to be converted into the height of the upper heating space.
As shown in fig. 2, the partition 154 has an annular sheet structure, and an inner side edge thereof is fixed to the outer side wall of the inner container 151 and an outer side edge thereof is fixed to the inner side wall of the inner container outer cover 152.
The partition 154 may be fixedly connected to the inner container 151 in a sealing manner, or may be non-fixedly connected, that is, a gap for allowing a heat exchange medium to pass therethrough is formed between the partition 154 and the inner container 151. Preferably, a space for allowing the heat exchange medium to pass is formed between the partition 154 and the inner container 151, and heat exchange with the inner container 151 can be sufficiently performed.
The partition 154 may be fixedly connected to the inner bladder casing 152 in a sealing manner, or may be non-fixedly connected to the inner bladder casing 152 in a sealing manner, and preferably, the partition 154 may be fixedly connected to the inner bladder casing 152 in a sealing manner, so that the heat exchange medium may pass between the first subspace 1531 and the second subspace 1532 from a side as close to the inner bladder as possible, thereby further improving the heat exchange efficiency.
The inner container outer sleeve 152 is of a sleeve-shaped structure, the two end edges of the inner container outer sleeve are bent towards the inner container 151 and are fixed with the outer side wall of the inner container 151 in a sealing mode, a closed interlayer space 153 is formed between the inner container 151 and the outer side wall, and heat exchange media are prevented from being leaked.
Bladder outer sleeve 152 may be stainless steel or porcelain enamel. The inner container outer cover 152 can be integrally formed with the inner container 151 or fixedly connected thereto by welding.
As shown in fig. 2, it is preferable that the number of the through holes 155 is plural, the size of the through holes 155 is related to the circulation flow rate, and the total area of the through holes 155 is not smaller than the inner flow cross-sectional area of the first header pipe.
The inner container 151 is further connected with a water inlet pipe 20 and a water outlet pipe 21, and the water inlet pipe 20 and the water outlet pipe 21 respectively extend into the inner container 151 and are respectively used for supplementing water to the inner container 151 and outputting hot water to the outside.
The water inlet pipe 20 and the water outlet pipe 21 respectively extend into the inner container 151 from the top end or the bottom end of the inner container 151, and the two sections are not wrapped by the inner container outer sleeve 152 and do not need to penetrate through the inner container outer sleeve 152, so that the risk of heat exchange medium leakage caused by sealing reasons is avoided.
Because heat pump water heater's water tank 15 adopts vertical the placing more, and the volume is great, for the convenience set up the pipeline and conveniently overhaul, preferably inlet tube 20 and outlet pipe 21 probe into to inner bag 151 respectively from the top of inner bag 151, also promptly, the coupling sets up the top at inner bag 151, conveniently overhauls and assembles.
The water is layered in the inner container 151, the temperature is gradually decreased from top to bottom, and the water outlet pipe 20 is inserted into the upper portion of the inner container 151 in order to increase the hot water output rate.
In order to prevent the disturbance of the stratification of the water temperature by the incoming cold water, it is preferable that the water inlet pipe 21 protrudes to the bottom of the inner container 151.
In order to keep the water in the inner container 151 warm, the water tank 15 further includes a casing (not shown), which is disposed outside the inner container 151 and the inner container outer sleeve 152, and a space between the casing and the inner container 151 is filled with a thermal insulation layer to prevent heat dissipation.
In order to extend the length of the path of the heat exchange medium flowing in the interlayer space 153 and further improve the heat exchange efficiency, it is preferable that the first port 1521 and the third port 1523 are diagonally disposed in the interlayer space 153, in which case the flow path of the heat exchange medium is the longest.
Similarly, when the half-bladder is heated, the first port 1521 and the second port 1523 are diagonally disposed in the first subspace 1531 in order to extend the path length of the heat exchange medium flowing in the first subspace 1531.
Example two
As shown in fig. 1 to 3, the heat pump water heater in this embodiment includes a first heat exchanger 11, a compressor 12, a second heat exchanger 13, a booster pump 14, and a water tank 15, where the first heat exchanger 11 has a first heat exchange flow passage and a second heat exchange flow passage (not shown in the drawings), the first heat exchange flow passage is sequentially connected to the compressor 12 and the second heat exchanger 13, and a refrigerant circulates between the first heat exchanger 11 and the second heat exchanger 13. Because this application is heat pump water heater, consequently first heat exchanger 11 is as the condenser all the time, and when the high-pressure refrigerant circulation of high temperature was to the first heat transfer runner of first heat exchanger 11, heat exchange was carried out with the heat exchange medium in the second heat transfer runner in first heat exchanger 11, and the heat shifts to in the heat exchange medium.
Other structures of the heat pump water heater can be found in the description of the first embodiment, and are not described herein.
It should be noted that in this embodiment, the heat exchange medium enters the interlayer space 153 from the first manifold 16 and circulates out through the second manifold 19, and the booster pump 14 is disposed between the second manifold 19 and the first heat exchanger 11.
The heat exchange medium absorbs the heat of the refrigerant in the first heat exchange flow channel in the second heat exchange flow channel, the heat exchange medium circularly flows in the second heat exchange flow channel from bottom to top, and preferably, the refrigerant circularly flows in the first heat exchange flow channel from top to bottom and reversely flows with the heat exchange medium, so that the heat exchange between the refrigerant and the heat exchange medium can be fully performed, and the heat exchange efficiency is further improved.
The above examples are only intended to illustrate the technical solution of the present invention, but 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 various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The water tank comprises an inner container and is characterized by further comprising:
the liner outer sleeve is sleeved on the outer side of the liner and forms a closed interlayer space with the outer surface of the liner;
the partition plate is arranged in the interlayer space and divides the interlayer space into at least two subspaces, and a through hole is formed in the partition plate;
each subspace is respectively communicated with at least one port, at least one subspace is connected with the first main pipe through the port of the subspace, and at least one subspace is connected with the second main pipe through the port of the subspace;
when a plurality of subspaces are simultaneously connected to the second manifold, the tank further comprises a control valve for controlling the communication of the second manifold with any one of the subspaces.
2. The water tank of claim 1, wherein the partition plate partitions the interlayer space into two parts, namely a first subspace and a second subspace, along the length direction of the inner container;
the inner container outer sleeve is provided with:
a first port in communication with the first subspace for connection to the first manifold;
a second port in communication with the first subspace for connection to a first branch;
a third port communicating with the second subspace for connecting a second branch pipe;
the second main pipe is respectively connected with the first branch pipe and the second branch pipe;
and the control valve is used for controlling the second main pipe to be communicated with the first branch pipe or the second main pipe to be communicated with the second branch pipe.
3. The water tank of claim 2, wherein the first port and the third port are diagonally disposed in the plenum space.
4. The water tank of claim 2, wherein the first port and the second port are diagonally disposed in the first subspace.
5. The water tank as claimed in claim 1, wherein the partition is a ring-shaped sheet structure, and the inner side edge of the partition is fixed with the outer side wall of the inner container, and the outer side edge of the partition is fixed with the inner side wall of the outer sleeve of the inner container.
6. The water tank as claimed in claim 1, wherein the inner container outer sleeve is of a sleeve-shaped structure, and the two end edges of the inner container outer sleeve are bent towards the inner container and are sealed and fixed with the outer side wall of the inner container.
7. The water tank as claimed in claim 1, wherein the inner container is externally coated with stainless steel or enamel.
8. The water tank as claimed in any one of claims 1 to 7, wherein the through-holes are provided in plural, and a total area of all the through-holes is not smaller than an inner flow sectional area of the first header pipe.
9. The water tank as claimed in any one of claims 1 to 7, wherein the control valve is a three-way valve, and three ends of the three-way valve are connected to the second header pipe, the first branch pipe and the second branch pipe, respectively.
10. A heat pump water heater comprises a first heat exchanger, a compressor, a second heat exchanger and a booster pump, wherein the first heat exchanger is provided with a first heat exchange flow channel and a second heat exchange flow channel, the first heat exchange flow channel is sequentially connected with the compressor and the second heat exchanger, the heat pump water heater is characterized by further comprising the water tank of any one of claims 1 to 9, the second heat exchange flow channel is respectively connected with a first main pipe and a second main pipe, and the booster pump is arranged between the second heat exchange flow channel and the first main pipe or between the second heat exchange flow channel and the second main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701959.3U CN215571261U (en) | 2021-04-07 | 2021-04-07 | Water tank and heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701959.3U CN215571261U (en) | 2021-04-07 | 2021-04-07 | Water tank and heat pump water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215571261U true CN215571261U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120701959.3U Active CN215571261U (en) | 2021-04-07 | 2021-04-07 | Water tank and heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215571261U (en) |
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2021
- 2021-04-07 CN CN202120701959.3U patent/CN215571261U/en active Active
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