CN218120197U - Water tank assembly and heat pump system - Google Patents

Abstract

The application relates to the technical field of clothes treatment, and provides a water tank assembly and a heat pump system, which comprise an inner container, a heat storage tube group and a phase change heat storage layer. The inner container forms a water containing space; the heat storage pipe set is provided with a refrigerant channel and a water flow channel which are extended in parallel, and the water flow channel is communicated with the water containing space; and the phase-change heat storage layer is coated outside the heat storage tube group. The application provides a water tank set spare on the one hand, heat accumulation pipe group is provided with the refrigerant passageway and the rivers passageway of extending parallelly jointly simultaneously, and water liquid in the rivers passageway can carry out the heat exchange in the refrigerant passageway in advance, has improved the heat exchange efficiency of refrigerant passageway, has reduced the temperature sudden change in the appearance water space. On the other hand, through the phase change heat accumulation layer of cladding outside the heat accumulation tube bank, the refrigerant passageway also can carry out the heat exchange with phase change heat accumulation layer, and the energy of storing in the phase change heat accumulation layer also can carry out the heat exchange for the water liquid in the rivers passageway to energy utilization has been improved.

Description

Water tank assembly and heat pump system

Technical Field

The application relates to the technical field of heat pumps and provides a water tank assembly and a heat pump system.

Background

With the development of society, medium and small coal-fired boilers are gradually eliminated by a heat pump system due to large energy waste and high pollution caused by the large energy waste, the heat pump is a device for transferring heat energy of a low-temperature heat source to a high-temperature heat source to realize refrigeration and heating, the existing heat pump system provides a more energy-saving and environment-friendly choice for life heating or refrigeration of people, and the water tank of the existing heat pump water heater has low heat exchange efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides a water tank assembly and a heat pump system, and the heat exchange efficiency of the water tank assembly is high.

An aspect of an embodiment of the present application provides a water tank assembly, including:

an inner container forming a water containing space;

the heat storage pipe set is provided with a refrigerant channel and a water flow channel which are extended in parallel, and the water flow channel is communicated with the water containing space;

and the phase-change heat storage layer is coated outside the heat storage tube set.

In some embodiments, the refrigerant channel is sleeved outside the water channel, and the flow direction of water in the water channel is opposite to the flow direction of refrigerant in the refrigerant channel.

In some embodiments, the water tank assembly includes a heat exchange tube wound around the outer peripheral wall of the inner container, the heat exchange tube being in communication with the refrigerant channel.

In some embodiments, the heat exchange pipeline is spirally wound around the outer peripheral wall of the inner container, and the heat storage pipe group surrounds the outer periphery of the heat exchange pipeline.

In some embodiments, the heat storage tube set is spirally wound along the circumference of the liner; the refrigerant in the heat exchange pipeline flows from top to bottom around the outer peripheral wall of the inner container, and the refrigerant in the heat storage pipe group flows from bottom to top around the outer peripheral wall of the inner container.

In some embodiments, the phase-change heat storage layer covers the heat exchange pipeline and the inner container.

In some embodiments, the inner container comprises a water inlet communicated with the water containing space, the water inlet is positioned at the lower part of the inner container, and the water flow channel is communicated with the water inlet.

In some embodiments, the inner container comprises a water outlet communicated with the water containing space, and the water outlet is positioned at the upper part of the inner container.

In some embodiments, the water tank assembly includes a thermal insulation layer that is wrapped outside the inner bladder and the phase change thermal storage layer.

Another aspect of the present application provides a heat pump system, including any one of the above described water tank assemblies, heat pump pipelines, compressors, reversing valves, throttling devices, and heat exchangers; the compressor, the reversing valve, the throttling device and the heat exchanger are all arranged on the heat pump pipeline, and two ends of the refrigerant channel are respectively communicated with the compressor and the throttling device.

The embodiment of the application provides a water tank set spare, on the one hand, heat accumulation nest of tubes is provided with the refrigerant passageway and the rivers passageway that extend jointly parallelly simultaneously, and the water liquid in the rivers passageway can carry out the heat exchange in the refrigerant passageway in advance, has improved the heat exchange efficiency of refrigerant passageway, has reduced the temperature sudden change in the appearance water space. On the other hand, through at the outer cladding phase change heat accumulation layer of heat accumulation tube assembly, the refrigerant passageway also can carry out the heat exchange with phase change heat accumulation layer, and the energy of storing in the phase change heat accumulation layer also can carry out the heat exchange for the water liquid in the rivers passageway to energy utilization has been improved.

Drawings

FIG. 1 is a schematic view of a water tank assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the operation of the arrangement of FIG. 1 in an operating mode of the heat pump system;

fig. 3 is an enlarged view of the structure shown in fig. 1 at a.

Description of the reference numerals

An inner container 1; a water containing space 1a; a water inlet 1b; a water outlet 1c; a heat storage tube group 2; the refrigerant passage 2a; a water flow passage 2b; an inner sleeve 21; an outer sleeve 22; a phase change heat storage layer 3; a heat exchange line 4; a heat-insulating layer 5; a water inlet pipeline 6; a water outlet pipeline 7.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the embodiments of the present application, the "inner", "outer", "upper", "lower" orientation or positional relationship is the orientation or positional relationship when the water tank assembly is in normal use. Such as the orientation or positional relationship shown in fig. 1. The term "first/second" merely distinguishes between different objects and does not denote the same or a relationship between the two. It is to be understood that such directional terms are merely used to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be constructed and operated in a particular orientation or orientation, and thus should not be considered as limiting the application.

Referring to fig. 1 and 2, in one aspect, an embodiment of the present disclosure provides a water tank assembly, which includes a liner 1, a heat storage tube set 2, and a phase change heat storage layer 3.

The inner container 1 is formed with a water containing space 1a. Specifically, the inner container 1 is a hollow thin-walled structure formed with a water containing space 1a, and the water containing space 1a is used for storing water or other liquid media.

The heat storage tube group 2 is formed with a refrigerant passage 2a and a water flow passage 2b extending in parallel in common. That is, the water flow channel 2b is parallel to the refrigerant channel 2a, and the water in the water flow channel 2b exchanges heat through the refrigerant channel 2a.

Specifically, when heat needs to be supplied to the water containing space 1a or the water flow passage 2b, a gaseous refrigerant of high temperature and high pressure flows in the refrigerant passage 2a; when it is necessary to supply cold to the water containing space 1a or the water flow passage 2b, the liquid refrigerant of low temperature and low pressure flows in the refrigerant passage 2a.

The water flow passage 2b communicates with the water containing space 1a. In other words, water or other liquid medium can flow into the water containing space 1a of the inner container 1 along the water flow channel 2b.

The phase change heat storage layer 3 is coated outside the heat storage tube group 2. So set up, refrigerant passageway 2a can carry out the heat exchange with rivers passageway 2b simultaneously, can also carry out the heat exchange with phase change heat storage layer 3, for phase change heat storage layer 3 heat accumulation or cold-storage.

In the related art, when a user uses hot water, an external water source such as cold water is often directly supplemented into the inner tank 1, so that the temperature of the hot water in the water tank is sharply reduced, and the use experience of the user is affected.

The embodiment of the application provides a water tank set spare, on the one hand, heat accumulation group 2 is provided with refrigerant passageway 2a and the rivers passageway 2b that extend parallelly jointly simultaneously, and the water liquid in rivers passageway 2b can carry out the heat exchange in refrigerant passageway 2a in advance, has improved refrigerant passageway 2 a's heat exchange efficiency, has reduced the temperature sudden change in holding water space 1a.

On the other hand, through the phase change heat storage layer 3 of cladding outside heat storage tube group 2, refrigerant passageway 2a also can carry out the heat exchange with phase change heat storage layer 3, and the energy of storing in phase change heat storage layer 3 also can carry out the heat exchange for the water liquid in the rivers passageway 2b to energy utilization has been improved.

For example, the water tank assembly according to the embodiment of the present application may be used in a heat pump water heater or other devices that require a heat pump system.

In one embodiment, the phase-change heat storage material of the phase-change heat storage layer 3 is a solid-liquid phase-change material, the solid-liquid phase-change material stores heat through a melting process of the phase-change material, and releases heat through a solidification process, and the phase-change heat storage material includes, but is not limited to, a combination of crystallized water and salt, molten salt, metal or alloy.

In one embodiment, the phase change temperature range of the phase change heat storage material is 35-45 ℃.

The shape structure of the inner container 1 is not limited, and can be a cylinder structure, a rectangular structure, a sphere structure, an ellipsoid structure and the like. In an exemplary embodiment, please refer to fig. 1 and fig. 2, the upper end and the lower end of the inner container 1 are ellipsoids, the peripheral side wall of the inner container 1 is a cylindrical surface, and the two ellipsoids are covered on two ends of the cylindrical surface along the axial direction, so as to form a structure similar to a capsule shape.

In one embodiment, referring to fig. 1 and 2, the water tank assembly includes a heat exchange pipe 4, the heat exchange pipe 4 is wound around the outer peripheral wall of the inner container 1, and the heat exchange pipe 4 is communicated with the refrigerant channel 2a. Specifically, the heat exchange line 4 communicates with the refrigerant channel 2a to constitute a refrigerant passage of the tank assembly. The refrigerant can flow in the heat exchange pipeline 4, and the refrigerant can carry out heat exchange with the water liquid in the water containing space 1a of the inner container 1 in a mode of winding the refrigerant on the outer peripheral wall of the inner container 1 through the heat exchange pipeline 4.

That is, the refrigerant can flow in the heat exchange line 4 in the forward direction to the refrigerant passage 2a, and the refrigerant can also flow in the reverse direction to the heat exchange line 4 along the refrigerant passage 2a. When the refrigerant passes through the inner container 1, the first heat exchange is realized, and when the refrigerant passes through the phase-change heat storage layer 3, the second heat exchange is realized. Through setting up phase change heat accumulation layer 3, can the reutilization internal energy of refrigerant, the holistic heat exchange efficiency of water tank set spare is higher.

When heat needs to be supplied to the water containing space 1a, the water flow channel 2b and the phase-change heat storage layer 3 at the same time, a high-temperature and high-pressure gaseous refrigerant flows in the refrigerant passage; when it is necessary to simultaneously supply cooling to the water-containing space 1a, the water flow passage 2b, and the phase-change heat storage layer 3, a low-temperature and low-pressure liquid refrigerant flows in the refrigerant passage.

In one embodiment, the heat exchange pipeline 4 is made of copper material with good heat exchange performance.

In one embodiment, referring to fig. 1 and 2, the inner container 1 includes a water inlet 1b communicated with the water containing space 1a, the water inlet 1b is located at the lower portion of the inner container 1, and the water flow channel 2b is communicated with the water inlet 1b. Specifically, water inlet 1b is located the lower part of 1 week lateral wall of inner bag, and the water tank set spare still includes water inlet pipe 6, and the both ends of rivers passageway 2b communicate water inlet 1b and water inlet pipe 6 respectively.

Because water inlet 1b goes into water and will force a partial air escape in the water space 1a of holding, and set up water inlet 1b in the lower part and can guarantee that water inlet 1b goes into water and hold the air area of contact in the water space 1a littleer, avoid the in-process at the retaining to produce too much bubbles to the efficiency of intaking has been improved.

In an embodiment, referring to fig. 1 and 2, the inner container 1 includes a water outlet 1c communicating with the water containing space 1a, and the water outlet 1c is located at an upper portion of the inner container 1. In particular, the water tank assembly comprises a water outlet line 7. The water outlet pipeline 7 is communicated with the water containing space 1a through a water outlet 1c, and the water outlet 1c is positioned at the upper part of the peripheral side wall of the inner container 1.

Because the water inlet 1b is located at the lower part of the peripheral side wall of the inner container 1, after the water flows into the water inlet 1b, the temperature of the water at the lower part in the water containing space 1a is relatively low, and the water heated by the heat exchange pipeline 4 naturally rises from the lower part to the upper part, so that the water outlet 1c arranged at the upper part of the inner container 1 can prevent the water which is not fully heated from directly flowing out of the water outlet 1c, and the temperature of the outlet water of the water outlet 1c is stable and reliable.

In one embodiment, the water inlet pipeline 6, the water outlet pipeline 7 and the liner 1 are made of stainless steel materials with high structural strength and good corrosion resistance.

The manner in which the refrigerant passage 2a and the water flow passage 2b extend in parallel is not limited. In one embodiment, the heat storage tube set 2 includes two heat storage tubes extending in parallel, and peripheral walls of the two heat storage tubes are closely attached to each other, wherein a refrigerant channel 2a is formed in one of the heat storage tubes, and a water flow channel 2b is formed in the other heat storage tube.

In one embodiment, the heat storage tube group 2 has a barrier wall extending along the length of the heat storage tube group 2 inside, the barrier wall partitioning the internal space of the heat storage tube group 2 into a refrigerant passage 2a and a water flow passage 2b.

In an embodiment, referring to fig. 1 and fig. 2, the phase-change heat storage layer 3 is coated outside the heat exchange pipeline 4 and the inner container 1. Specifically, the phase change heat storage layer 3 is a hollow tubular structure with openings at the upper end and the lower end, the inner peripheral wall of the phase change heat storage layer 3 is wrapped on the outer peripheral wall of the liner 1, and the heat exchange pipeline 4 is clamped between the inner peripheral wall of the phase change heat storage layer 3 and the outer peripheral wall of the liner 1.

So set up, on the one hand phase change heat accumulation layer 3 not only can carry out the heat exchange with rivers passageway 2b, can also carry out the heat exchange with the water that holds in the water space 1a to the heat preservation effect has been improved. On the other hand, the structure of the water tank assembly is more compact, and the integration degree is high.

In one embodiment, referring to fig. 2 and 3, the refrigerant channel 2a is sleeved outside the water channel 2b. Illustratively, the heat storage tube set 2 includes an outer tube 22 having a hollow structure and an inner tube 21 having a hollow structure, a water flow channel 2b is formed inside the inner tube 21, the inner tube 21 is inserted into the outer tube 22, and an inner peripheral wall of the outer tube 22 and an outer peripheral wall of the inner tube 21 jointly enclose to form a refrigerant channel 2a. The flow direction of water in the water flow passage 2b is opposite to the flow direction of refrigerant in the refrigerant passage 2a.

The material of the heat storage tube group 2 is not limited. In one embodiment, the outer sleeve 22 of the heat storage tube set 2 is made of copper material with good heat exchange performance, and the inner sleeve 21 of the heat storage tube set 2 is made of stainless steel material with high structural strength and good corrosion resistance.

The winding manner of the heat storage tube group 2 is not limited. In an embodiment, referring to fig. 1 and fig. 2, the heat exchange pipeline 4 is spirally wound around the outer peripheral wall of the inner container 1, and the heat storage tube set 2 surrounds the outer periphery of the heat exchange pipeline 4. Specifically, the winding track of the heat exchange pipeline 4 is a cylindrical spiral line tightly attached to the outer peripheral wall of the liner 1. So arrange, the structure of water tank set spare is compacter, and the refrigerant passageway 2a of heat accumulation nest of tubes 2 is more convenient with the intercommunication of heat transfer pipeline 4, and the tube side is shorter.

In one embodiment, referring to fig. 1 and 2, the heat storage tube set 2 is spirally wound along the circumference of the liner 1. Specifically, the winding track of the heat storage tube group 2 is also a cylindrical spiral line tightly attached to the outer peripheral wall of the inner container 1, and the diameter of the cylindrical spiral line of the extension track of the heat storage tube group 2 is larger than that of the cylindrical spiral line of the heat exchange pipeline 4.

In an embodiment, referring to fig. 1 and fig. 2, the refrigerant in the heat exchange tube 4 flows from top to bottom around the outer peripheral wall of the inner container 1, and the refrigerant in the heat storage tube group 2 flows from bottom to top around the outer peripheral wall of the inner container 1.

In one embodiment, the heat exchange pipeline 4 is arranged in a winding way along the circumferential direction of the outer peripheral wall of the inner container 1.

In one embodiment, referring to fig. 1 and 2, the water tank assembly includes a heat insulating layer 5, and the heat insulating layer 5 covers the inner container 1 and the phase change heat storage layer 3. That is to say, the inside of heat preservation 5 is formed with the heat preservation space, and inner bag 1 and phase change heat accumulation layer 3 all set up in the heat preservation space, and heat preservation 5 passes through the heat exchange between the separation external world and the water containing space 1a and/or between external world and the phase change heat accumulation layer 3 to reduce the heat loss of water tank set spare, improve the heat preservation effect of water tank set spare.

The material of the insulating layer 5 is not limited, and includes but not limited to rock wool, aluminum silicate, glass wool, composite silicate and other materials with small thermal coefficient, in an embodiment, the material of the insulating layer 5 is polyurethane foam sponge, and the polyurethane foam sponge is light in material and has a good insulating effect.

In one embodiment, an exhaust port is formed at the upper portion of the inner container 1, and the water tank assembly includes a safety valve disposed at the exhaust port to open or close the exhaust port. That is, the water containing space 1a can be communicated with the outside or blocked by the safety valve.

In an exemplary state of the safety valve, the water containing space 1a is communicated with the outside through the exhaust port, so that the air pressure in the water containing space 1a is balanced with the outside air pressure; when the safety valve is in a closed state, the water containing space 1a is isolated from the outside, and the air tightness of the water containing space 1a is ensured.

Another aspect of the present application provides a heat pump system, which includes a heat pump pipeline, a reversing valve, a compressor, a throttling device, a heat exchanger, and any one of the above water tank assemblies.

The compressor, the reversing valve, the throttling device and the heat exchanger are all arranged on a heat pump pipeline, and two ends of the refrigerant channel 2a are respectively communicated with the compressor and the throttling device. Specifically, the heat exchange line 4 communicates with the refrigerant passage 2a to constitute a refrigerant passage of the water tank assembly, one end of the refrigerant passage communicates with the compressor through the reversing valve, and the other end of the refrigerant passage communicates with the throttle device.

The compressor serves to compress a low-pressure gaseous refrigerant into a high-pressure gaseous refrigerant. Compressors include, but are not limited to, piston compressors, screw compressors, scroll compressors, rolling rotor compressors, centrifugal compressors, axial compressors, and the like.

The throttling device is used for throttling and reducing the high-pressure liquid refrigerant into low-pressure liquid refrigerant, and the pressure difference between the refrigerant passage and the heat exchanger is ensured. The throttling device includes but is not limited to a capillary tube capable of bidirectional flow, an electronic expansion valve, a throttling pipe stub and the like.

The change valve may be a four-way valve or other change valves for switching flow paths. Four interfaces of the four-way valve are respectively communicated with an air suction port of the compressor, an exhaust port of the compressor, the heat exchanger and a refrigerant passage of the water tank assembly.

The heat exchanger can be used for carrying out the heat exchange with other effectual mediums that can be used for the heat transfer such as air or water, including but not limited to floating head heat exchanger, fixed tube plate heat exchanger, U-shaped tube plate heat exchanger, plate heat exchanger etc..

The refrigerant includes, but is not limited to, chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, and like chlorofluorocarbons.

Illustratively, taking a heat pump system as an example for supplying heat to a water tank assembly, a refrigerant used for circulating flow is arranged in a heat pump pipeline, a high-temperature and high-pressure gaseous refrigerant enters a reversing valve through an exhaust port of a compressor, the exhaust port of the compressor is guided to a refrigerant passage of the water tank assembly through the reversing valve, the high-temperature and high-pressure gaseous refrigerant flows into the refrigerant passage of the water tank assembly to be condensed and released to be changed into a low-temperature and high-pressure liquid refrigerant, so as to heat water in a water containing space 1a and a water flow channel 2b and also to store heat for a phase change heat storage layer 3, the low-temperature and high-pressure liquid refrigerant flows into a throttling device to be reduced into a low-temperature and low-pressure liquid refrigerant, the low-temperature and low-pressure liquid refrigerant flows into a heat exchanger to be evaporated and absorbed to be changed into a high-temperature and low-pressure gaseous refrigerant, and finally the high-temperature and low-pressure gaseous refrigerant is guided to an air inlet port of the compressor through the reversing valve to be changed into a high-temperature and high-pressure gaseous refrigerant, thus a heat supply cycle is completed.

The various embodiments/implementations provided herein may be combined with each other without contradiction. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A water tank assembly, comprising:

the inner container forms a water containing space;

the heat storage pipe set is provided with a refrigerant channel and a water flow channel which are extended in parallel, and the water flow channel is communicated with the water containing space;

and the phase-change heat storage layer is coated outside the heat storage pipe set.

2. The water tank assembly as recited in claim 1, wherein said refrigerant passage is nested outside said water passage, and wherein a direction of water flow in said water passage is opposite to a direction of refrigerant flow in said refrigerant passage.

3. The water tank assembly of claim 1, comprising heat exchange tubing wrapped around an outer peripheral wall of the liner, the heat exchange tubing in communication with the refrigerant channel.

4. The water tank assembly of claim 3, wherein the heat exchange tube is spirally wound around the outer peripheral wall of the inner tank, and the heat storage tube set surrounds the outer periphery of the heat exchange tube.

5. The water tank assembly of claim 4, wherein the heat storage tube set is helically coiled along a circumference of the liner; the refrigerant in the heat exchange pipeline flows from top to bottom around the outer peripheral wall of the inner container, and the refrigerant in the heat storage pipe group flows from bottom to top around the outer peripheral wall of the inner container.

6. The water tank assembly of claim 3, wherein the phase change heat storage layer is coated outside the heat exchange tube and the inner liner.

7. The water tank assembly of claim 1, wherein said inner tank includes a water inlet opening communicating with said water containing space, said water inlet opening being located at a lower portion of said inner tank, said water flow passage communicating with said water inlet opening.

8. The water tank assembly of claim 1, wherein said inner tank includes a water outlet communicating with said water containing space, said water outlet being located at an upper portion of said inner tank.

9. The water tank assembly of any one of claims 1-8, wherein said water tank assembly comprises a thermal insulation layer, said thermal insulation layer being wrapped outside said inner tank and said phase change thermal storage layer.

10. A heat pump system comprising a water tank assembly, a heat pump pipeline, a compressor, a reversing valve, a throttling device and a heat exchanger according to any one of claims 1 to 9; the compressor, the reversing valve, the throttling device and the heat exchanger are all arranged on the heat pump pipeline, and two ends of the refrigerant channel are respectively communicated with the compressor and the throttling device.

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