CN212961914U

CN212961914U - Heat accumulator and air conditioner

Info

Publication number: CN212961914U
Application number: CN202021293894.5U
Authority: CN
Inventors: 陈昌中; 谭德强; 欧活军; 柴国丰; 范召卿; 陈焕焕
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-04-13
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a heat accumulator and air conditioner, wherein the heat accumulator includes the heat accumulation casing and sets up the heat exchanger subassembly in the heat accumulation casing, and the heat exchanger subassembly includes two at least heat exchangers of range upon range of setting and is used for connecting the mounting structure of two adjacent heat exchangers. So set up, utilize mounting structure to connect fixedly to upper and lower layer heat exchanger, restricted the relative motion between the two, improved heat exchanger assembly's installation reliability, stop the heat exchanger and take place dislocation, removal, distortion, solved among the prior art at heat accumulator transportation, vibration, fall or the heat storage material is heated and takes place to take place the problem that dislocation, removal, distortion etc. take place easily between the in-process heat exchanger such as phase transition melts.

Description

Heat accumulator and air conditioner

Technical Field

The utility model relates to an air conditioner technical field, more specifically say, relate to a heat accumulator and air conditioner.

Background

In the conventional air conditioner outdoor unit, a heat storage and defrosting function is provided, and a specific embodiment of the function is to store heat of a compressor in a heat storage device and supply the heat to a condenser of the outdoor unit, and to remove frost formation by using the heat stored in the heat storage device when the condenser of the outdoor unit is frosted.

Each heat accumulator comprises a heat exchanger and a heat accumulation material, the heat accumulation material is filled around the heat exchanger, and the effect of high-efficiency heat exchange is achieved by the flowing of a cold medium in the heat exchanger. The heat accumulator is provided with a heat exchanger assembly consisting of at least two heat exchangers, and the upper and lower heat exchangers are respectively assembled and fixed with the heat accumulation shell. However, the upper and lower heat exchangers are not fixed, so that the problems of dislocation, movement, distortion and the like are easily caused in the processes of transportation, vibration and falling of the heat accumulator or phase change and melting of a heat accumulation material caused by heating, and the reliability of installation and fixation of the heat exchanger assembly is poor. Therefore, how to solve the problem that in the prior art, dislocation, movement, distortion and the like are easy to occur between heat exchangers in the processes of transportation, vibration, falling or phase change melting of a heat storage material due to heating of the heat storage material becomes an important technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat accumulator and air conditioner to solve among the prior art at heat accumulator transportation, vibration, fall or the heat accumulation material is heated and takes place the problem that the dislocation takes place easily between the in-process heat exchanger such as phase transition melts, removes, distortion etc..

The utility model aims at realizing through the following technical scheme:

the utility model provides a pair of heat accumulator, be in including heat accumulation casing and setting heat exchanger assembly in the heat accumulation casing, heat exchanger assembly includes two at least heat exchangers of range upon range of setting and is used for connecting adjacent two the mounting structure of heat exchanger.

Preferably, the mounting structure includes two mounting frames that set up relatively and be connected with the heat accumulation casing, and two the mounting frame is connected with two the pressure manifold of heat exchanger respectively.

Preferably, the heat accumulation casing is equipped with and is used for connecting the fixed plate of mounting bracket, the fixed plate is equipped with the first pilot hole that is used for the cartridge fastener, the mounting bracket include the mounting panel and with the fixed cover of arc that the mounting panel is connected, the mounting panel be equipped with the corresponding second pilot hole of first pilot hole, the fixed cover of arc be equipped with the pressure manifold cooperatees, supplies the breach that the pressure manifold stretched into.

Preferably, the heat storage shell is provided with a positioning column for abutting against the collecting pipe of the heat exchanger, and the positioning column extends into the end cover of the collecting pipe.

Preferably, the second assembling hole is a waist-shaped hole, and a long axis direction of the waist-shaped hole is parallel to an axial direction of the collecting pipe.

Preferably, the arc-shaped fixing sleeve is arc-shaped, and the inner wall surface of the arc-shaped fixing sleeve is in interference fit with the outer wall surface of the collecting pipe.

Preferably, the distance a between the center of the arc-shaped fixing sleeve and the center of the second assembling hole is 15-20 mm.

Preferably, the wall thickness t of the arc-shaped fixing sleeve is 1.5 mm-4.0 mm.

Preferably, the central angle β corresponding to the notch is 140 degrees to 150 degrees.

Preferably, the end surface of the positioning column abuts against the inner bottom surface of the end cover, and the end surface of the positioning column is in interference fit with the inner bottom surface of the end cover.

Preferably, the two ends of the collecting pipe are provided with the positioning columns.

Preferably, the end of the positioning column is provided with a conical guide part.

Preferably, the fixing plate is an "L" shaped fixing plate.

Preferably, the mounting structures are multiple and distributed at intervals along the axial direction of the collecting main.

The utility model also provides an air conditioner, including the heat accumulator, the heat accumulator be as above arbitrary the heat accumulator.

The utility model provides an among the technical scheme, a heat accumulator includes the heat accumulation casing and sets up the heat exchanger subassembly in the heat accumulation casing, and the heat exchanger subassembly includes two at least heat exchangers of range upon range of setting and the mounting structure who is used for connecting two adjacent heat exchangers. So set up, utilize mounting structure to connect fixedly to upper and lower layer heat exchanger, restricted the relative motion between the two, improved heat exchanger assembly's installation reliability, stop the heat exchanger and take place dislocation, removal, distortion, solved among the prior art at heat accumulator transportation, vibration, fall or the heat storage material is heated and takes place to take place the problem that dislocation, removal, distortion etc. take place easily between the in-process heat exchanger such as phase transition melts.

Drawings

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

Fig. 1 is a schematic structural diagram of a heat accumulator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a heat accumulator according to an embodiment of the present invention (with a cover plate removed);

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial schematic view of FIG. 4 at C;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 7 is a partial schematic view of FIG. 6 at D;

fig. 8 is a schematic structural view of a mounting frame in an embodiment of the present invention;

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a cross-sectional view taken along line E-E of FIG. 9;

fig. 11 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

fig. 12 is a schematic structural view of the heat storage case according to the embodiment of the present invention (with the cover plate removed).

In fig. 1-12:

1-a heat storage housing; 11-a cover plate; 12-a front side plate; 13-rear side plate; 14-a middle plate; 2-a heat exchanger assembly; 3-a heat exchanger; 31-collecting pipe; 32-end caps; 33-an access tube assembly; 4-a mounting frame; 41-mounting plate; 42-an arc-shaped fixing sleeve; 43-notch; 5, fixing a plate; 6-a first assembly hole; 7-a positioning column; 71-a conical guide; 8-second assembly hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1 to 12, the heat accumulator provided in the present embodiment includes a heat accumulation housing 1 and a heat exchanger assembly 2 disposed in the heat accumulation housing 1, and the heat exchanger assembly 2 includes at least two heat exchangers 3 disposed in a stacked manner and a mounting structure for connecting the adjacent two heat exchangers 3. Specifically, as shown in fig. 1 and 2, the thermal storage case 1 includes a bottom case including a front side plate 12, a rear side plate 13, and an intermediate plate 14, and a lid plate 11. The front, rear, and the like are the positions of the thermal storage cases as shown in fig. 2. The heat exchanger component 2 comprises two heat exchangers 3 which are sequentially stacked in a bottom box, the upper layer heat exchanger 3 and the lower layer heat exchanger 3 are connected through a mounting structure, and the inlet and outlet pipe component 33 penetrates out of a via hole formed in the front side plate 12 and is welded and sealed with the via hole. The heat accumulator further includes a phase change heat storage material (not shown) filled in the heat storage case 1, and the phase change heat storage material is preferably paraffin, and may be selected from inorganic phase change materials such as crystalline hydrated salt, molten salt, metal or alloy, organic phase change materials such as fatty acid, high density polyethylene, and polyol, or composite phase change materials formed by blending the heat storage material with a support material. So set up, utilize mounting structure to connect fixedly to upper and lower layer heat exchanger, restricted the relative motion between the two, improved heat exchanger assembly's installation reliability, stop the heat exchanger and take place dislocation, removal, distortion, solved among the prior art at heat accumulator transportation, vibration, fall or the heat storage material is heated and takes place to take place the problem that dislocation, removal, distortion etc. take place easily between the in-process heat exchanger such as phase transition melts.

As shown in fig. 4, the mounting structure includes two mounting brackets 4 that are disposed opposite to each other and connected to the heat storage case 1, and the two mounting brackets 4 are connected to the headers 31 of the two heat exchangers 3, respectively. The upper and lower heat exchangers 3 are arranged symmetrically, so that the mounting frame 4 arranged on the collecting pipe 31 of the upper and lower heat exchangers 3 can be conveniently and simultaneously mounted and fixed. As shown in fig. 11, each heat exchanger 3 includes two parallel headers 31, and each header 31 is provided with a mounting bracket 4, so that the left and right sides of the two heat exchangers 3 are both connected and fixed, and the reliability of the heat exchanger assembly is higher. In a preferred embodiment of the present invention, the mounting structures are plural and are distributed at intervals along the axial direction of the header 31. Specifically, as shown in fig. 3, two mounting frames 4 are provided on each header 31, so that the upper and lower heat exchangers are fixed at multiple positions in the front-rear direction, and the connection between the heat exchangers is firmer.

In the embodiment of the present invention, the heat storage housing 1 is provided with the fixing plate 5 for connecting the mounting frame 4, the fixing plate 5 is provided with the first assembling hole 6 for inserting the fastening member, and the first assembling hole 6 can be set as a round hole. The mounting frame 4 comprises a mounting plate 41 and an arc-shaped fixing sleeve 42 connected with the mounting plate 41, the mounting plate 41 is provided with a second assembling hole 8 corresponding to the first assembling hole 6, and the arc-shaped fixing sleeve 42 is provided with a notch 43 which is matched with the collecting pipe 31 and used for the collecting pipe 31 to stretch into. When the heat exchanger assembly 2 is assembled, the upper layer heat exchanger 3 and the lower layer heat exchanger 3 are symmetrically arranged and aligned, so that the planes of the mounting plates 41 of the mounting frames 4 on the upper layer heat exchanger 3 and the lower layer heat exchanger 3 are mutually attached together, and then the second assembling holes 8 on the mounting plates 41 and the first assembling holes 6 on the fixing plates 5 can be fixedly connected through fasteners such as plug screws after being aligned. The positioning structure further improves the installation reliability of the heat exchanger assembly, and meanwhile, the two heat exchangers are independently fixed without adding extra fasteners, so that the assembly efficiency of the heat exchanger assembly is improved.

In a preferred embodiment of the present embodiment, the fixing plate 5 is an "L" shaped fixing plate. As shown in fig. 12, the heat storage case 1 is provided with "L" shaped fixing plates on the inner surfaces of the left and right sides of the intermediate plate 14, and after the vertical folding edges thereof are welded and fixed to the heat storage case 1, the horizontal folding edges thereof are just attached to the lower surface of the mounting plate 41 of the lower heat exchanger 3. The first pilot hole 6 on the horizontal hem cooperatees with the second pilot hole 8 on the heat exchanger 3, thereby the fastener passes two mounting panels 41, horizontal hem in proper order and will go up lower floor's heat exchanger and heat accumulation casing and be connected fixedly to promote the installation reliability of heat exchanger, stop that the heat exchanger takes place the dislocation, remove, the distortion.

In this embodiment, the heat storage casing 1 is further provided with a positioning column 7 for abutting against the header 31 of the heat exchanger 3, and the positioning column 7 extends into the end cap 32 of the header 31 to clamp and fix the end cap of the heat exchanger, thereby further improving the installation reliability of the heat exchanger assembly. The positioning column 7 can be arranged on the rear side plate 13 and matched with the through hole of the upper outlet pipe assembly on the front side plate 12 to axially position the heat exchanger. As shown in fig. 7, an end surface of the positioning column 7 abuts against an inner bottom surface of the end cap 32, and an interference fit is provided between the end surface of the positioning column 7 and the inner bottom surface of the end cap 32, and an interference magnitude is preferably 0.5 mm to 0.8 mm. Preferably, as shown in fig. 6, the two ends of the header 31 are provided with positioning pillars 7, i.e. the front side plate 12 and the rear side plate 13 are provided with positioning pillars 7. The four positioning columns are matched with each other to be used simultaneously, the heat exchanger is axially clamped and positioned, the movement and the dislocation of the heat exchanger can be limited, and the installation reliability of the heat exchanger assembly is improved. And the positioning column applies a clamping force to the heat exchanger along the axial direction of the two collecting pipes, so that the hidden danger that the gravity center is unbalanced, the stress concentration of welding spots of the inlet and outlet pipe assembly is concentrated, and the leakage exists in the welding spots of the system in long-term operation due to the fact that one side of the heat accumulator close to the front side plate is not supported by a mounting frame is avoided. As shown in fig. 7, the end of the positioning post 7 is provided with a tapered guide portion 71 for guiding the positioning post 7 when it is fitted into the end cap 32.

The existing heat accumulator does not fix the upper and lower heat exchangers, only the inlet and outlet pipe assemblies of the upper and lower heat exchangers are clamped and fixed through the rubber rings corresponding to the hole positions on the edge of the heat accumulation shell in an interference fit manner, then the gaps of the rubber plugs are aligned to the reinforcing ribs of the heat exchanger assemblies, the rubber rings are matched with the rubber plugs without gaps after the heat accumulator is assembled, then the injection molding covers are assembled and screwed to compress and fix the heat accumulator, the installation reliability between the heat exchanger and the heat accumulation shell and between the upper and lower heat exchangers is poor, and the heat exchanger can be dislocated, moved, twisted and the like in the processes of transportation, vibration, falling or phase change melting of heat. The heat accumulator provided by the embodiment adopts the positioning columns on the heat accumulation shell to axially clamp and position the heat exchanger, and meanwhile, the upper and lower heat exchangers are provided with the mounting frames and are in screw fastening connection with the fixing plates on the heat accumulation shell, so that the mounting reliability and stability between the upper and lower heat exchangers and between each heat exchanger and the heat accumulation shell are improved.

As an alternative embodiment, as shown in fig. 8, the second assembly hole 8 is a kidney-shaped hole, and as shown in fig. 11, the long axis direction of the kidney-shaped hole is parallel to the axial direction of the collecting pipe 31, so that there is a certain degree of freedom when the second assembly hole 8 is tightened, which can compensate for machining errors generated during the furnace-through brazing process of the heat exchanger 3, and facilitates assembly alignment.

Since the collecting pipe 31 is generally a circular pipe, and the arc-shaped fixing sleeve 42 is used for fixing the mounting frame 4 and the collecting pipe 31 of the heat exchanger 3, in this embodiment, as shown in fig. 5, the arc-shaped fixing sleeve 42 is configured to be a circular arc shape, and an inner wall surface of the arc-shaped fixing sleeve 42 is in interference fit with an outer wall surface of the collecting pipe 31. Therefore, the mounting frame can be prevented from loosening in the machining process of the heat exchanger, the mounting frame cannot be changed relative to the positioning size and the positioning angle of the heat exchanger, and the positioning precision of the upper heat exchanger and the lower heat exchanger during installation is guaranteed. The radius of the outer wall surface of the collecting pipe 31 is R1, the radius of the inner wall surface of the arc-shaped fixing sleeve 42 is R2, and R2 is smaller than R1 and is preferably set to be (R1-0.30) mm to (R1-0.10) mm. In addition, the wall thickness t of the arc-shaped fixing sleeve 42 is 1.5 mm-4.0 mm, so that certain strength is ensured, and deformation and distortion cannot occur when the arc-shaped fixing sleeve bears the weight of the microchannel main body.

In order to avoid scratching the arc-shaped fixing sleeve 42 when the fastening member such as a screw is tightened, the distance a between the center of the second fitting hole 8 and the center of the arc-shaped fixing sleeve 42 needs to be set to a proper value. However, the value of the distance a is not suitable to be too large, so that the width of the heat exchanger is increased, the whole width of the heat accumulator is increased, and the installation space is increased. Therefore, the value of the distance a is preferably set to 15 mm to 20 mm. In addition, as shown in fig. 10, the central angle β corresponding to the notch 43 is 140 degrees to 150 degrees, so that the header can be conveniently clamped into the mounting frame in an interference manner.

The embodiment also provides an air conditioner, which comprises a heat accumulator, wherein the heat accumulator is the heat accumulator provided by any one of the embodiments. So set up, utilize mounting structure to connect fixedly to upper and lower layer heat exchanger, restricted the relative motion between the two, improved heat exchanger assembly's installation reliability, stop the heat exchanger and take place dislocation, removal, distortion, solved among the prior art at heat accumulator transportation, vibration, fall or the heat storage material is heated and takes place to take place the problem that dislocation, removal, distortion etc. take place easily between the in-process heat exchanger such as phase transition melts. The derivation process of the beneficial effect is substantially similar to that of the heat accumulator, and therefore, the description is omitted here.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The heat accumulator is characterized by comprising a heat accumulation shell (1) and a heat exchanger assembly (2) arranged in the heat accumulation shell (1), wherein the heat exchanger assembly (2) comprises at least two heat exchangers (3) which are arranged in a stacked mode and a mounting structure used for connecting the two adjacent heat exchangers (3).

2. Regenerator according to claim 1, characterized in that said mounting structure comprises two mounting frames (4) arranged opposite and connected to said regenerator casing (1), and in that said two mounting frames (4) are connected to the headers (31) of the two heat exchangers (3), respectively.

3. The heat accumulator as claimed in claim 2, characterized in that the heat accumulation housing (1) is provided with a fixing plate (5) for connecting the mounting frame (4), in that the fixing plate (5) is provided with first assembly holes (6) for inserting fasteners, in that the mounting frame (4) comprises a mounting plate (41) and an arc-shaped fixing sleeve (42) connected to the mounting plate (41), in that the mounting plate (41) is provided with second assembly holes (8) corresponding to the first assembly holes (6), in that the arc-shaped fixing sleeve (42) is provided with notches (43) cooperating with the collecting pipe (31) for the collecting pipe (31) to extend into.

4. Regenerator according to claim 1, characterized in that the regenerator housing (1) is provided with positioning posts (7) for abutting against the collecting main (31) of the heat exchanger (3), said positioning posts (7) protruding into the end caps (32) of the collecting main (31).

5. Regenerator according to claim 3, characterized in that said second fitting hole (8) is a kidney-shaped hole, the long axis of which is parallel to the axial direction of said header (31).

6. The regenerator as claimed in claim 3, characterized in that said arc-shaped jacket (42) is of the shape of a circular arc and in that the inner wall of said arc-shaped jacket (42) has an interference fit with the outer wall of said collecting main (31).

7. Regenerator as claimed in claim 6, characterized in that the distance a between the centre of said arc-shaped fixing sleeve (42) and the centre of said second fitting hole (8) is comprised between 15 and 20 mm.

8. Regenerator as claimed in claim 6, characterized in that said arched jacket (42) has a wall thickness t comprised between 1.5 mm and 4.0 mm.

9. Regenerator according to claim 6, characterized in that said notches (43) have a central angle β comprised between 140 and 150 degrees.

10. The regenerator as claimed in claim 4, in which the end faces of the locating posts (7) abut against the inner bottom face of the end cap (32), and there is an interference fit between the end faces of the locating posts (7) and the inner bottom face of the end cap (32).

11. Regenerator as in claim 4, characterized in that said positioning posts (7) are provided at both ends of said collecting main (31).

12. Regenerator as in claim 4, characterized in that the end of said positioning pillars (7) is provided with a conical guide (71).

13. Regenerator as claimed in claim 3, characterized in that said fixed plate (5) is an "L" -shaped fixed plate.

14. Regenerator according to claim 2, in which said mounting structures are plural and are spaced apart along the axial direction of said header (31).

15. An air conditioner comprising a heat accumulator, characterized in that the heat accumulator is a heat accumulator according to any one of claims 1-14.