CN107421036B

CN107421036B - Heat storage device and air conditioning unit

Info

Publication number: CN107421036B
Application number: CN201710705787.5A
Authority: CN
Inventors: 兰建; 覃家忠; 张亚国
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-08-17
Filing date: 2017-08-17
Publication date: 2023-06-02
Anticipated expiration: 2037-08-17
Also published as: CN107421036A

Abstract

The invention relates to a heat storage device and an air conditioning unit, wherein the heat storage device comprises a heat storage module (1), a first limiting piece (2) and a second limiting piece (3), one surface of the heat storage module (1) along the thickness direction is attached to the first limiting piece (2), the second limiting piece (3) is integrally pressed and spans the other surface of the heat storage module (1) along the thickness direction, the end part of the second limiting piece (3) is connected with the first limiting piece (2), and the first limiting piece (2) and the second limiting piece (3) limit the freedom degree of the heat storage module (1) along the thickness direction together. The fixing structure can simplify the installation and fixing modes of the heat storage module and improve the assembly and disassembly efficiency; and first locating part and second locating part can also provide effectual support to the heat accumulation module on spacing basis, improves the stability of heat accumulation module installation, is difficult to take place to rock in packing, transportation and use, guarantees the reliability of heat accumulation device in each link.

Description

Heat storage device and air conditioning unit

Technical Field

The invention relates to the technical field of air conditioners, in particular to a heat storage device and an air conditioner unit.

Background

The heat storage device can effectively store heat, and then output the heat at any time point so as to use the heat to do corresponding work. The internal materials of the heat accumulator parts are all stamped and compacted materials, so that the whole heat accumulator part is heavy, and the fixing mode of the heat accumulator part becomes a key problem.

In the prior art, the fixing modes of the heat storage module are all fixed by bolts, a torque wrench is required to be used for screwing in the assembly process, so that the heat storage module is inconvenient and the operation efficiency is low. And when restraint each direction degree of freedom through a plurality of bolts, all set up the damping cushion that adopts when corresponding the position in the bolt and being similar to the installation compressor, when heat accumulation module receives the vibration, all can produce certain elastic deviation on each plane degree of freedom, the phenomenon that heat accumulation module collided the casing can appear when the offset accumulation is great, leads to the installation of heat accumulation module unstable, but also can increase the noise of unit to influence other performances of unit.

Disclosure of Invention

The invention aims to provide a heat storage device and an air conditioning unit, which can improve the stability of fixing a heat storage module.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a heat storage device including a heat storage module, a first stopper, and a second stopper, wherein one surface of the heat storage module in a thickness direction is attached to the first stopper, the second stopper is integrally pressed and spans the other surface of the heat storage module in the thickness direction, and an end portion of the second stopper is connected to the first stopper, and the first stopper and the second stopper limit degrees of freedom of the heat storage module in the thickness direction together.

Further, the first limiting part comprises a supporting part and a bending part, the supporting part limits the degree of freedom of the heat storage module along the thickness direction, the bending part is arranged at the end part of the supporting part along the width direction of the heat storage module, the width direction is perpendicular to the direction of the refrigerant pipe joint of the heat storage module, a support is arranged on the supporting part, the heat storage module is located between the bending part and the support, and the bending part and the support limit the degree of freedom of the heat storage module along the width direction together.

Further, the heat storage device comprises two heat storage modules, the two ends of the supporting portion in the width direction of the heat storage modules are respectively provided with a reverse extending bending portion, the front face and the back face of the supporting portion are respectively provided with the support, and the two heat storage modules are respectively installed on the front face and the back face of the supporting portion.

Further, the second limiting piece is arranged along the width direction of the heat storage module, and two ends of the second limiting piece are respectively connected to the bending part and the support.

Further, the heat storage device further comprises a substrate arranged at one end of the first limiting part along the length direction of the heat storage module, the length direction is along the direction of the refrigerant pipe joint of the heat storage module, a positioning hole is formed in the substrate, a mounting interface is formed in one end of the heat storage module along the length direction, and bolts penetrate through the positioning hole and the mounting interface to fix the heat storage module on the substrate so as to limit the freedom degree of the heat storage module along the length direction.

Further, a vibration damper is arranged between the mounting interface and the base plate.

Further, the heat storage module is provided with a plurality of groups of refrigerant pipe joints, each group of refrigerant pipe joints comprises a gaseous refrigerant pipe joint and a liquid refrigerant pipe joint, the cross sections of the adjacent groups of refrigerant pipe joints are enclosed to form a parallelogram, the supporting parts are obliquely arranged relative to the horizontal plane, so that the gaseous refrigerant pipe joints of the heat storage module are all positioned in a first horizontal plane, and the liquid refrigerant pipe joints of the heat storage module are all positioned in a second horizontal plane.

Further, the heat storage device further comprises a mounting frame, the first limiting piece further comprises a connecting portion, the connecting portion is arranged at one end, far away from the supporting portion, of the bending portion, and the connecting portion is used for fixing the first limiting piece on the mounting frame.

Further, the heat storage device further comprises a substrate arranged at one end of the first limiting part in the length direction of the heat storage module, the mounting frame comprises a bottom plate, side plates arranged at two sides of the bottom plate and a rear plate arranged at the rear side of the bottom plate, an installation space of the heat storage module is formed by encircling among the bottom plate, the side plates and the rear plate, the two connecting parts are respectively fixed on different side plates, the rear plate is used as the substrate, and the supporting part is obliquely arranged relative to the bottom plate.

In order to achieve the above object, a second aspect of the present invention provides an air conditioning unit, including the heat storage device described in the above embodiment.

Further, the heat storage device is arranged on the indoor side of the air conditioning unit and is connected with the heat exchanger of the indoor unit in parallel and used for defrosting the outdoor unit.

Based on the above technical scheme, in the heat storage device according to the embodiment of the invention, one surface of the heat storage module in the thickness direction is attached to the first limiting member, and the second limiting member is pressed and spans the other surface of the heat storage module in the thickness direction, and the end part of the second limiting member is connected with the first limiting member, so that the degree of freedom of the heat storage module in the thickness direction is limited by the first limiting member and the second limiting member together. The fixing structure can simplify the installation and fixing modes of the heat storage module and improve the assembly and disassembly efficiency; and on the basis of providing limiting function, first locating part and second locating part compare with the mode that only adopts the bolt fastening, can also provide effectual support to the heat accumulation module, improve the stability of heat accumulation module installation, be difficult to take place to rock in packing, transportation and use, guarantee the reliability of heat accumulation device in each link.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is an exploded view of one embodiment of a thermal storage device of the present invention;

FIG. 2 is a schematic structural view showing an embodiment of a heat storage module fixing structure in the heat storage apparatus of the present invention;

fig. 3 is a schematic structural view of an embodiment of the heat storage device of the present invention.

Description of the reference numerals

1. A thermal storage module; 2. a first limiting member; 3. a second limiting piece; 4. a vibration damping member; 5. a bolt; 6. a mounting frame; 7. a bracket; 8. a substrate; 11. a gaseous refrigerant pipe joint; 12. a liquid refrigerant pipe joint; 13. installing an interface; 21. a connection part; 22. a bending part; 23. a support part; 31. a first connection portion; 32. a limit part; 33. a second connecting portion; 61. a rear plate; 62. a bottom plate; 63. and a side plate.

Detailed Description

The present invention is described in detail below. In the following paragraphs, the different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless explicitly stated to be non-combinable. In particular, any feature or features may be combined with one or more other features may be desired and advantageous.

The terms "first," "second," and the like in the present invention are merely for convenience of description to distinguish between different constituent components having the same name, and do not denote a sequential or primary or secondary relationship.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner" and "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention, and do not indicate or imply that the apparatus to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present invention.

As shown in fig. 1 to 3, the present invention proposes a heat storage device, in which the mounting and fixing structure of a heat storage module 1 is mainly improved, and in the following description, the heat storage module 1 is mainly limited in terms of the degree of freedom in the height, width and length directions according to the mounting and fixing structure, respectively. The shell of the heat storage module 1 is generally rectangular, a heat exchange tube is arranged in the shell, two ends of the heat exchange tube are respectively provided with a gaseous refrigerant tube joint 11 and a liquid refrigerant tube joint 12, the gaseous refrigerant tube joint 11 and the liquid refrigerant tube joint 12 are collectively called as refrigerant tube joints, the refrigerant tube joints can be vertically arranged on the side wall of the shell, the direction perpendicular to the refrigerant tube joints is defined as the width direction of the heat storage module 1, and the direction along the refrigerant tube joints is defined as the length direction of the heat storage module 1. Furthermore, the faces on the heat storage module 1 mentioned later all refer to the outer side faces of the heat storage module 1.

In an exemplary embodiment, referring to fig. 1, the thermal storage device includes a thermal storage module 1, a first stopper 2, and a second stopper 3, one surface of the thermal storage module 1 in the thickness direction is attached to the first stopper 2, the second stopper 3 is integrally pressed and spans the other surface of the thermal storage module 1 in the thickness direction, and an end portion of the second stopper 3 is connected to the first stopper 2, and the first stopper 2 and the second stopper 3 limit the degree of freedom of the thermal storage module 1 in the thickness direction together.

In this embodiment, the first limiting member 2 and the second limiting member 3 are respectively in contact with two surfaces of the thermal storage module 1 along the thickness direction, and the degree of freedom of the thermal storage module 1 along the thickness direction can be limited by the surface contact method, which has at least one of the following advantages compared with the method of only adopting the bolt fixing method:

(1) When the heat storage device is subjected to external force, the prior art only adopts a bolt fixing mode to bear the external force by means of the bolt, and the sectional area of the bolt is smaller and the bearing capacity is limited. The heat storage device disclosed by the invention bears external force by virtue of the first limiting piece and the second limiting piece, has larger contact area with the heat storage module, can generate reliable limiting acting force on two surfaces of the heat storage module along the thickness direction, improves the mounting stability of the heat storage module, reliably constrains the heat storage module in the packaging, transportation and use processes, is not easy to shake, and can ensure the reliability of the heat storage device in each link.

(2) Because the contact area between the first limiting piece and the heat storage module and between the second limiting piece and the heat storage module is increased, the heat storage module can be accurately positioned, and the precision is easy to ensure during installation.

(3) The fixing structure can simplify the installation and fixing mode of the heat storage module and improve the assembly and disassembly efficiency.

As shown in fig. 2, the first limiting member 2 includes a supporting portion 23 and a bending portion 22, and both the supporting portion 23 and the bending portion 22 may have a plate-like structure, and the first limiting member 2 may be formed by bending a whole plate. Wherein, the heat storage module 1 is attached to the supporting portion 23 along one surface of the thickness direction to limit the degree of freedom of the heat storage module 1 along the thickness direction, the bending portion 22 is disposed at an end portion of the supporting portion 23 along the width direction of the heat storage module 1, so as to form an L-shaped structure, and an included angle between the bending portion 22 and the supporting portion 23 is adapted to the shape of the heat storage module 1. In addition, the support portion 23 is provided with a bracket 7, the bracket 7 may also have a plate-like structure, and is disposed opposite to the bending portion 22, the thermal storage module 1 is disposed between the bending portion 22 and the bracket 7, the distance between the bending portion 22 and the bracket 7 is adapted to the width of the thermal storage module 1, and the bending portion 22 and the bracket 7 together limit the degree of freedom of the thermal storage module 1 along the width direction.

In this embodiment, the support portion 23 and the bracket 7 are respectively in contact with two surfaces of the thermal storage module 1 in the width direction, and the degree of freedom of the thermal storage module 1 in the width direction can be limited by the surface contact mode, so that the thermal storage module 1 can be accurately positioned, and reliable limiting acting force can be generated on two surfaces of the thermal storage module 1 in the width direction, so that the mounting stability of the thermal storage module 1 is further improved. When in installation, the heat storage module is only required to be embedded into the space between the supporting part 23 and the bracket 7, so that the positioning in the width direction can be realized, the installation difficulty can be reduced, and the assembly efficiency can be improved.

Moreover, this structure all sets up width limiting component on first locating part 2, improves positioning accuracy through adopting unified positioning reference, and first locating part 2 intensity is higher moreover, is difficult to take place to warp, can improve reliability and the steadiness of heat accumulation module 1 installation.

Preferably, the support portion 23 is capable of providing restraint to the entire surface of one of the side surfaces of the thermal storage module 1 in the thickness direction, to improve reliability of positioning and restraint. On the premise that the supporting portion 23 can serve as a stable installation reference, the second limiting piece 3 only needs to limit the other surface of the heat storage module 1 along the thickness direction by adopting a strip-shaped plate with a preset width, so that materials can be saved, and the installation is convenient.

On this basis, the bent portions 22 extend along the entire length edges of the support portions 23 to provide restraint to the entire surface of one of the side surfaces of the thermal storage module 1 in the width direction, and the reliability of positioning and restraint can be improved. On the premise that the bending portion 22 provides stable restraining force, the bracket 7 is only required to be designed into a plate-shaped structure with a preset width so as to limit the other surface of the heat storage module 1 along the width direction. Preferably, the height of the bent portion 22 and the bracket 7 is designed according to the thickness of the corresponding side thermal storage module 1.

For the embodiment in which the width-direction limitation is achieved by the bending portion 22 and the bracket 7, the second limiting member 3 is disposed along the width direction of the thermal storage module 1, and both ends of the second limiting member 3 are connected to the bending portion 22 and the bracket 7, respectively. Because the support part 23 is provided with the heightened structure at the two side surfaces along the width direction of the heat storage module 1, the heightened structure can be fully utilized to realize the fixation of the second limiting part 3, and the connection difficulty can be reduced. Moreover, because the width limiting components are uniformly arranged on the first limiting component 2 with higher strength, the strength requirement on the second limiting component 3 can be reduced, and the second limiting component 3 can be a strip-shaped plate. In addition, the second stopper 3 may be provided along the longitudinal direction of the thermal storage module 1.

Here, a structural form is given which the second limiting member 3 can take. As shown in fig. 1 and 3, the second spacing member 3 includes a first connecting portion 31, a spacing portion 32, and a second connecting portion 33, where the spacing portion 32 is used for being pressed on a surface of the thermal storage module 1 in the thickness direction to perform spacing, and the spacing portion 32 is in surface contact with the thermal storage module 1. The first connecting portion 31 is disposed at one end of the limiting portion 32 and is bent in a direction away from the thermal storage module 1, so as to form an L-shaped structure, and the first connecting portion 31 is connected with the bending portion 22 through a fastener. The second connecting portion 33 is disposed at the other end of the limiting portion 32, forms an obtuse angle with the limiting portion 32, is matched with the inclined portion on the heat storage module 1, and the second connecting portion 33 is connected with the bracket 7 through a fastener. The second limiting member 3 may be integrally formed by bending a plate-like structure.

In the heat storage device shown in fig. 3, which includes two heat storage modules 1, in order to simultaneously install two heat storage modules 1 using the same first limiting member 2, two ends of a supporting portion 23 in a width direction of the heat storage modules 1 are respectively provided with a bending portion 22 extending reversely, and both front and back sides of the supporting portion 23 are respectively provided with a bracket 7, so that the two heat storage modules 1 are respectively installed on both front and back sides of the supporting portion 23. The structure can save the number of parts, make the installation of the heat storage module 1 more compact, and improve the space utilization rate inside the heat storage device.

Further, referring to fig. 1 and 2, the heat storage device of the present invention further includes a base plate 8 provided at one end of the first limiting member 2 along the length direction of the heat storage module 1, a positioning hole is provided on the base plate 8, an installation interface 13 is provided at one end of the heat storage module 1 along the length direction, and the bolt 5 passes through the positioning hole and the installation interface 13 to fix the heat storage module 1 on the base plate 8, so as to limit the degree of freedom of the heat storage module 1 along the length direction.

Preferably, two mounting interfaces 13 are arranged at one end of the heat storage module 1 along the length direction, the two mounting interfaces are respectively arranged on the adjacent width edge and thickness edge of the heat storage module 1, the mounting interfaces 13 on the width edge are arranged away from the supporting part 23, and the mounting interfaces 13 on the thickness edge are arranged away from the bending part 22, so that the distribution of all constraint positions is uniform, and the mounting firmness is improved.

Preferably, a vibration damper 4 is provided between the mounting interface 13 and the base plate 8. The vibration absorbing member 4 may be a cylindrical structure provided with a through hole along the axis for absorbing vibrations received by the heat storage device during packaging, transportation and use, protecting the heat storage module 1. Due to the fact that the number of the bolt connections is reduced, the number of the vibration reduction pieces 4 is correspondingly reduced, the vibration reduction effect is achieved, the offset of the heat storage module 1 can be reduced, meanwhile, reliable restraint along the width and thickness directions of the heat storage module 1 is matched, and the heat storage module 1 can be prevented from touching the outer peripheral shell.

Specifically, the mounting interface 13 is a mounting hole formed in a lug of the heat storage module 1, and after the bolts 5 sequentially pass through the positioning holes, the vibration reduction pieces 4 and the mounting holes from the outside of the base plate 8, the bolts are locked through nuts, so that the heat storage module 1 and the base plate 8 are separated through the vibration reduction pieces 4, and a buffering effect is achieved.

The heat storage module 1 is provided with at least two layers of heat exchange pipes along the thickness direction, each layer of heat exchange pipe is correspondingly provided with a group of refrigerant pipe joints, each group of refrigerant pipe joints comprises a gaseous refrigerant pipe joint 11 and a liquid refrigerant pipe joint 12, and the cross sections of the adjacent groups of refrigerant pipe joints are enclosed to form a parallelogram. For such a two-channel thermal storage module 1 installation, as shown in fig. 3, the support portion 23 may be disposed obliquely with respect to the horizontal plane so that the gaseous refrigerant pipe joints 11 of each thermal storage module 1 are all in the first horizontal plane and the liquid refrigerant pipe joints 12 of each thermal storage module 1 are all in the second horizontal plane.

Taking the heat storage device for an air conditioning unit as an example, when the air conditioning unit is in a heating mode, as the heights of the gaseous refrigerant pipe joints 11 of each heat storage module 1 are the same, the amounts of gaseous refrigerants entering the heat exchange pipes through the gaseous refrigerant pipe joints 11 are consistent, so that the heat at each position of the heat storage module 1 can be uniformly absorbed, and the heat storage capacity of the heat storage device is improved. When the air conditioning unit is in the defrosting mode, as the heights of the liquid refrigerant pipe joints 12 are the same, the liquid refrigerant quantity entering the heat exchange pipe through the liquid refrigerant pipe joints 12 is consistent, the influence of gravity can be eliminated, the heat release quantity of the heat storage module at each position can be uniform, and the defrosting effect can be optimized.

If only one thermal storage module 1 is installed, it is preferable to install the thermal storage module 1 on the upper surface of the support 23, so that the main weight of the thermal storage module 1 can be borne by the support 23, providing a stable supporting force for the thermal storage module 1. Or the thermal storage module 1 may be mounted on the lower surface of the support 23.

If two heat storage modules 1 are required to be mounted, as shown in fig. 3, the two heat storage modules 1 are mounted on the upper and lower surfaces of the support portion 23, respectively, and the support portion 23 provided obliquely leaves room for mounting the heat storage modules 1 thereunder. The area of the supporting portion 23 is larger than the surface area of the heat storage module 1 in contact therewith, so that the two heat storage modules 1 can be installed in a staggered manner in the width direction, so that all the gaseous refrigerant pipe joints 11 of the two heat storage modules 1 are in a first horizontal plane, all the liquid refrigerant pipe joints 12 of the respective heat storage modules 1 are in a second horizontal plane, and the first horizontal plane and the second horizontal plane are arranged at intervals in the height direction. In addition, the overall height of the thermal storage device can be reduced.

When the supporting portion 23 is obliquely arranged, in order to facilitate the installation of the first limiting member 2, as shown in fig. 3, the heat storage device of the present invention further includes a mounting frame 6, the first limiting member 2 further includes a connecting portion 21, the connecting portion 21 is disposed at one end of the bending portion 22 away from the supporting portion 23, the connecting portion 21 and the side surface of the bending portion 22 away from the heat storage module 1 form an obtuse angle, and the connecting portion 21 and the side surface of the bending portion 22 are used for fixing the first limiting member 2 on the mounting frame 6. If two heat storage modules 1 are installed, connecting portions 21 are correspondingly arranged at the end portions of the two bending portions 22, and the formed first limiting piece 2 is in an antisymmetric structure.

Specifically, as shown in fig. 3, the mounting bracket 6 includes a bottom plate 62, side plates 63 disposed on both sides of the bottom plate 62, and a rear plate 61 disposed on the rear side of the bottom plate 62, an installation space for the thermal storage module 1 is defined between the bottom plate 62, the side plates 63, and the rear plate 61, two connecting portions 21 are respectively fixed on the different side plates 63, so that the first limiting member 2 is integrally located between the two side plates 63 and is suspended relative to the bottom plate 62 so as to provide a space for the thermal storage module 1 below the supporting portion 23, and the supporting portion 23 is disposed obliquely relative to the bottom plate 62.

Specifically, a flange bent inwards is provided at the top end of the side plate 63, the connecting portion 21 may be fixed on the flange by a plurality of fasteners, and the connecting portions 21 at both ends of the first limiting member 2 are all in a horizontal state. The rear plate 61 serves as a base plate 8, and the thermal storage module 1 is fixed to the rear plate 61 by bolts 5.

In addition, the invention also provides an air conditioning unit, which comprises the heat storage device. Through setting up fixed mounting structure for heat accumulation module 1, the whole heat accumulation device can be installed in air conditioning unit as independent module, can select the heat accumulation device according to the demand when air conditioning unit designs or installs, perhaps change the mounted position, can improve the commonality of heat accumulation device, easily realizes the integration installation. In addition, the heat storage module 1 is more stable to install, so that the phenomenon of loose installation is not easy to occur when the air conditioning unit is subjected to continuous vibration in the operation process of the air conditioning unit, and the reliability of the air conditioning unit in operation can be improved.

In a preferred embodiment, the heat storage device is arranged on the indoor side of the air conditioning unit, and the heat storage device is arranged in parallel with the indoor heat exchanger for defrosting the outdoor unit.

When the air conditioning unit is in a heating mode, a high-temperature high-pressure gaseous refrigerant part discharged by the compressor enters an indoor unit heat exchanger serving as a condenser to condense and release heat; meanwhile, the other part of the gaseous refrigerant is shunted into the gaseous refrigerant pipe joints 11 of each heat storage module 1 through the header pipe, and enters the heat exchange pipe to transfer the heat of the gas to the heat storage medium for storage, and the gaseous refrigerant is converted into liquid refrigerant in the process and flows out of the liquid refrigerant pipe joints 12. The liquid refrigerant flowing out of the indoor heat exchanger and the heat storage device enters the outdoor heat exchanger serving as an evaporator, and the liquid refrigerant is evaporated to form a low-temperature low-pressure gaseous refrigerant to be sucked by the compressor.

In the process, as part of liquid is mixed in the gaseous refrigerant entering from the gaseous refrigerant pipe joint 11, if the heights of the gaseous refrigerant pipe joints 11 are inconsistent, when the gas-liquid mixed refrigerant enters, the gaseous refrigerant flows upwards and flows into the joint with higher position; the liquid refrigerant flows into the pipe orifice with lower position due to gravity, gas-liquid layering phenomenon is generated, the liquid refrigerant is easy to accumulate in the joint with lower position, the blocking pipeline is smooth, the quantity of the refrigerant entering from each gaseous refrigerant pipe joint 11 is inconsistent, and finally, the heat accumulation inside the heat accumulation module 1 is uneven, and the heat accumulation capacity is lower. In the installation form of one embodiment of the invention, the heights of the gaseous refrigerant pipe joints 11 are consistent, so that the amount of liquid refrigerant entering through the gaseous refrigerant pipe joints 11 is consistent, the amount of the gaseous refrigerant entering the heat storage module 1 is balanced among the joints, the heat absorption of the heat storage module is uniform, and the heat storage capacity of the heat storage device is improved.

When the air conditioning unit is in the defrosting mode, a refrigerant circulation branch where the indoor unit heat exchanger is located is closed, liquid refrigerant is introduced into each liquid refrigerant pipe joint 12 of the heat storage device through the main pipe, the liquid refrigerant flows into the heat exchange pipe to absorb heat stored in the heat storage medium in the heating mode, and the liquid refrigerant is converted into gaseous refrigerant in the heat exchange process and flows out of the gaseous refrigerant pipe joint 11. Then the low-temperature low-pressure gaseous refrigerant is sucked by the compressor, and the compressed high-temperature high-pressure gaseous refrigerant enters an outdoor unit heat exchanger serving as a condenser for defrosting.

In the process, the heights of the liquid refrigerant pipe joints 12 are consistent, so that the liquid refrigerant quantity entering the heat exchange pipe through the liquid refrigerant pipe joints 12 is consistent, the influence of gravity is eliminated, the heat release quantity of the heat storage module at each position can be uniform, and the defrosting effect is optimized.

The heat storage device and the air conditioning unit provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present invention and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims

1. The heat storage device is characterized by comprising a heat storage module (1), a first limiting piece (2) and a second limiting piece (3), wherein one surface of the heat storage module (1) in the thickness direction is attached to the first limiting piece (2), the second limiting piece (3) is integrally pressed and spans the other surface of the heat storage module (1) in the thickness direction, and the end part of the second limiting piece (3) is connected with the first limiting piece (2);

the heat storage module comprises a heat storage module body and is characterized in that the first limiting part (2) comprises a supporting part (23) and a bending part (22), the supporting part (23) limits the degree of freedom of the heat storage module body (1) along the thickness direction, the bending part (22) is arranged at the end part of the supporting part (23) along the width direction of the heat storage module body and forms an L-shaped structure, the width direction is perpendicular to the direction of a refrigerant pipe joint of the heat storage module body (1), the supporting part (23) and the bending part (22) are both in plate-shaped structures, the second limiting part (3) is a strip-shaped plate, and the first limiting part (2) and the second limiting part (3) limit the degree of freedom of the heat storage module body (1) along the thickness direction jointly.

2. The heat storage device according to claim 1, wherein a bracket (7) is provided on the support portion (23), the heat storage module (1) is located between the bending portion (22) and the bracket (7), and the bending portion (22) and the bracket (7) together limit the degree of freedom of the heat storage module (1) in the width direction.

3. The heat storage device according to claim 2, comprising two heat storage modules (1), wherein the support portions (23) are respectively provided with the bent portions (22) extending reversely along both ends of the heat storage modules (1) in the width direction, the brackets (7) are respectively provided on the front and back sides of the support portions (23), and the two heat storage modules (1) are respectively mounted on the front and back sides of the support portions (23).

4. A heat storage device according to claim 2 or 3, wherein the second stopper (3) is provided along the width direction of the heat storage module (1), and both ends of the second stopper (3) are connected to the bent portion (22) and the bracket (7), respectively.

5. A heat storage device according to any one of claims 1 to 3, further comprising a base plate (8) provided at one end of the first limiting member (2) in the longitudinal direction of the heat storage module (1), the longitudinal direction being the direction along the coolant pipe joint of the heat storage module (1), a positioning hole being provided in the base plate (8), an installation interface (13) being provided at one end of the heat storage module (1) in the longitudinal direction, and bolts (5) penetrating the positioning hole and the installation interface (13) to fix the heat storage module (1) to the base plate (8) so as to limit the degree of freedom of the heat storage module (1) in the longitudinal direction.

6. The thermal storage device according to claim 5, characterized in that a damping element (4) is provided between the mounting interface (13) and the base plate (8).

7. A thermal storage device according to claim 2 or 3, wherein the thermal storage modules (1) have a plurality of sets of coolant pipe joints, each set of coolant pipe joints comprising a gaseous coolant pipe joint (11) and a liquid coolant pipe joint (12), adjacent sets of coolant pipe joints enclosing a parallelogram in cross section, the support sections (23) being arranged obliquely with respect to the horizontal plane so that the gaseous coolant pipe joints (11) of each thermal storage module (1) are all in a first horizontal plane and the liquid coolant pipe joints (12) of each thermal storage module (1) are all in a second horizontal plane.

8. The heat storage device according to claim 7, further comprising a mounting bracket (6), wherein the first stopper (2) further comprises a connecting portion (21), the connecting portion (21) being provided at an end of the bent portion (22) remote from the supporting portion (23), the connecting portion (21) being configured to fix the first stopper (2) to the mounting bracket (6).

9. The heat storage device according to claim 8, further comprising a base plate (8) provided at one end of the first stopper (2) in the longitudinal direction of the heat storage module (1), wherein the mounting bracket (6) comprises a bottom plate (62), side plates (63) provided at both sides of the bottom plate (62), and a rear plate (61) provided at the rear side of the bottom plate (62), an installation space for the heat storage module (1) is defined between the bottom plate (62), the side plates (63) and the rear plate (61), the two connecting portions (21) are respectively fixed to different side plates (63), the rear plate (61) serves as the base plate (8), and the supporting portions (23) are arranged obliquely with respect to the bottom plate (62).

10. An air conditioning unit comprising the heat storage device according to any one of claims 1 to 9.

11. An air conditioning unit according to claim 10, wherein the heat storage device is provided on an indoor side of the air conditioning unit and is provided in parallel with the indoor heat exchanger for defrosting the outdoor unit.