Liquid accumulator mounting structure and air source heat pump unit thereof

Abstract

The utility model discloses a liquid accumulator mounting structure which is connected between a liquid accumulator and the inner bottom wall of a case of an air source heat pump unit and comprises a mounting seat, a bottom positioning part and a side positioning part, wherein the mounting seat is fixedly connected to the inner bottom wall of the case and is provided with a bottom connecting part and a side surface limiting part; the bottom positioning part is fixedly connected to the bottom of the liquid storage device and is matched with the bottom connecting part for fixing; the side positioning part and the side limiting part are matched to form a fixing sleeve arranged in the middle of the liquid storage device in a sleeving manner; compared with the prior art, the bottom of the liquid storage device is positioned and fixed through the matching of the bottom connecting part and the bottom positioning part, and meanwhile, the fixing sleeve for sleeving and fixing the middle part of the liquid storage device is formed through the matching of the side surface limiting part and the side part positioning part, so that the liquid storage device is stably and accurately mounted; and pipeline leakage caused by stress, vibration and the like is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump structures, and in particular to a liquid receiver installation structure and an air source heat pump unit. Background Art

[0002] Air source heat pump units have become essential air-conditioning products for heating in northern China. The liquid receiver is an important part of the air-conditioning system and is widely used in air-conditioning and air source heat pump units.

[0003] The liquid receiver has the following specific functions:

[0004] 1. Store refrigerant; when the load of the refrigeration system changes, the liquid receiver can store the excess refrigerant to ensure the stable operation of the system;

[0005] 2. Separate liquid and gaseous refrigerants to prevent liquid refrigerant from entering the compressor and avoid liquid hammer damage to the compressor;

[0006] 3. Filter out impurities in the system, such as rust, metal particles, etc., to protect the compressor from damage;

[0007] 4. Reduce the noise during the operation of the refrigeration system and improve the operation quality of the system;

[0008] 5. Balance the high pressure in the system and prevent adverse effects caused by pressure fluctuations on the system.

[0009] However, due to the limited installation space of the liquid receiver in the air source heat pump unit, it is usually customized according to user requirements, and generally, the liquid receiver is designed to be slender. In the prior art, the installation method of the liquid receiver in the air source heat pump unit generally adopts a stud provided at the bottom of the liquid receiver to be fixedly connected with a nut on the mounting plate connected to the inner bottom wall of the chassis of the air source heat pump unit. The disadvantages of this connection method of the liquid receiver are as follows:

[0010] 1. During the process of tightening the nut, the inlet and outlet ports of the liquid receiver are prone to a certain angular deviation, which causes great stress when fixing the pipelines at the inlet and outlet ports of the liquid receiver and is likely to cause leakage at the welded joints of the pipelines;

[0011] 2. At the same time, the vertical section of the liquid receiver is relatively long and not restricted, and the vibration generated during the operation and transportation of the air source heat pump unit is also likely to cause leakage at the pipeline connection. Summary of the Utility Model

[0012] Aiming at the deficiencies in the prior art, the purpose of the present utility model is to provide a liquid receiver installation structure and an air source heat pump unit to solve the problem that the pipelines connected to the inlet and outlet ports of the liquid receiver are prone to leakage due to the method of only fixedly connecting the bottom of the liquid receiver by studs and nuts in the prior art.

[0013] To achieve the above object, the first aspect of the present utility model adopts the following technical solution: A liquid storage device installation structure is connected between the liquid storage device and the inner bottom wall of the air source heat pump unit, and includes:

[0014] An installation seat, which is fixedly connected to the inner bottom wall of the chassis and has a bottom connection part and a side limiting part;

[0015] A bottom positioning part, which is fixedly connected to the bottom of the liquid storage device and cooperates with the bottom connection part for fixation;

[0016] A side positioning part, which cooperates with the side limiting part to form a fixing sleeve sleeved on the middle part of the liquid storage device.

[0017] The second aspect of the present utility model adopts the following technical solution: An air source heat pump unit includes a chassis and a liquid storage device, and further includes a liquid storage device installation structure as described in the first aspect of the present utility model, which is connected between the chassis and the liquid storage device.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] This liquid storage device installation structure positions and fixes the bottom of the liquid storage device through the cooperation of the bottom connection part and the bottom positioning part, and at the same time forms a fixing sleeve for sleeving and fixing the middle part of the liquid storage device through the cooperation of the side limiting part and the side positioning part, so as to install the liquid storage device stably and accurately. Then, there will be no large stress at the pipeline connected to the air inlet and outlet of the liquid storage device, which greatly reduces the risk of pipeline leakage caused by stress. At the same time, during the operation or transportation of the air source heat pump unit, the liquid storage device can be stably connected to the chassis, greatly reducing the risk of pipeline leakage caused by vibration. Description of the Drawings

[0020] Figure 1 It is a partial structural schematic diagram of an air source heat pump unit in an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the split schematic diagram of;

[0022] Figure 3 is Figure 1 the structural schematic diagram of the liquid storage device in;

[0023] Figure 4 is Figure 1 the structural schematic diagram of the installation seat in;

[0024] Figure 5 is Figure 1 the structural schematic diagram of the side positioning part in.

[0025] The reference numerals in the accompanying drawings of the specification include: liquid storage tank 1, chassis 2, mounting base 3, bottom connection part 31, limiting groove 311, relief hole 312, side limiting part 32, first positioning hole 321, second positioning hole 322, bottom positioning part 4, limiting platform 41, guiding section 411, locking structure 42, threaded post 421, fastening nut 422, connecting plate 43, side positioning part 5, third positioning hole 51, fourth positioning hole 52, positioning post 6. Detailed implementation manners

[0026] The following further details the present utility model through specific implementation manners:

[0027] In the prior art, the installation method of the liquid storage tank 1 in an air source heat pump unit generally adopts a method of fixedly connecting a stud provided at the bottom of the liquid storage tank 1 with a nut to an installation plate connected to the inner bottom wall of the chassis 2 of the air source heat pump unit. The disadvantages of this connection method of the liquid storage tank 1 are as follows: during the process of tightening the fastening nut 422, the air inlet and outlet of the liquid storage tank 1 are prone to a certain angular deviation, resulting in great stress when fixing the pipeline at the air inlet and outlet of the liquid storage tank 1, which is likely to cause leakage at the welded joint of the pipeline; at the same time, the vertical section of the liquid storage tank 1 is relatively long and not restricted, and the vibration generated during the operation and transportation of the air source heat pump unit is also likely to cause leakage at the pipeline connection. To solve the above disadvantages, as Figures 1-5 shown, an embodiment of the present utility model proposes a liquid storage tank installation structure, which is connected between the liquid storage tank 1 and the inner bottom wall of the chassis 2 of the air source heat pump unit, and includes a mounting base 3, a bottom positioning part 4 and a side positioning part 5; wherein, the mounting base 3 is fixedly connected to the inner bottom wall of the chassis 2 and has a bottom connection part 31 and a side limiting part 32; the bottom positioning part 4 is fixedly connected to the bottom of the liquid storage tank 1 and cooperates with the bottom connection part 31 for fixation; the side positioning part 5 cooperates with the side limiting part 32 to form a fixing sleeve sleeved on the middle part of the liquid storage tank 1.

[0028] This liquid storage tank installation structure positions and fixes the bottom of the liquid storage tank 1 through the cooperation of the bottom connection part 31 and the bottom positioning part 4, and at the same time forms a fixing sleeve for sleeving and fixing the middle part of the liquid storage tank 1 through the cooperation of the side limiting part 32 and the side positioning part 5, so as to stably and accurately install the liquid storage tank 1. Then, there will be no large stress at the pipeline connected to the air inlet and outlet of the liquid storage tank 1, greatly reducing the risk of pipeline leakage caused by stress. At the same time, during the operation or transportation of the air source heat pump unit, the liquid storage tank 1 can be stably connected to the inside of the chassis 2, greatly reducing the risk of pipeline leakage caused by vibration.

[0029] To better understand this solution, the following will further optimize the structures such as the bottom connection part 31, the side limiting part 32, the bottom positioning part 4 and the side positioning part 5.

[0030] AsFigure 2 , Figure 3 and Figure 4 As shown in Figure 4 , according to another embodiment of the present utility model, for the liquid storage device installation structure, the bottom connection portion 31 has a limiting groove 311 and a relief hole 312; the bottom positioning portion 4 has a limiting platform 41 that is inserted into the limiting groove 311 for positioning and a locking structure 42 that passes through the relief hole 312 for fixation.

[0031] In this embodiment:

[0032] There are two limiting grooves 311, which are distributed on different sides of the relief hole 312, and correspondingly there are two limiting platforms 41, which are also distributed on different sides of the locking structure 42; when the bottom connection portion 31 cooperates with the bottom positioning portion 4, the two limiting platforms 41 are inserted into the two limiting grooves 311 in one-to-one correspondence, and then the locking structure 42 passes through the relief hole 312 for fixation, so as to determine the installation accuracy of the liquid storage device 1 and avoid angular deviation of the liquid storage device 1 after installation.

[0033] In order to enable the limiting platform 41 to be quickly inserted into the corresponding limiting groove 311 for positioning, the limiting platform 41 has a guiding section 411 with a gradually increasing cross-section from one end to the other end. Specifically, during the process of inserting into the limiting groove 311, the small head end of the guiding section 411 is first inserted into the limiting groove 311, and then the main body section of the limiting platform 41 is inserted into the limiting groove 311 for adaptation.

[0034] As Figure 3 shown, according to another embodiment of the present utility model, for the liquid storage device installation structure, the bottom positioning portion 4 further has a connection disk 43, the connection disk 43 is fixedly connected to the bottom of the liquid storage device 1, and both the limiting platform 41 and the locking structure 42 are connected to the connection disk 43.

[0035] Specifically, the two limiting platforms 41 and the locking structure 42 are fixed on the connection disk 43, and the connection disk 43 serves as a structure for connecting the two limiting platforms 41 and the locking structure 42 to the bottom of the liquid storage device 1.

[0036] Based on the above solution: A plurality of positioning holes are provided on the connection disk 43, and a positioning column 6 fixedly connected to the bottom of the liquid storage device 1 is embedded in each positioning hole.

[0037] In this embodiment, there are two positioning holes formed in the connection disk 43 and they are symmetrically arranged with the locking structure 42 as the center, so the corresponding positioning posts 6 are two. The connection of the connection disk 43 to the bottom of the liquid storage device 1 is specifically that the two positioning posts 6 are inserted into the two positioning holes in a one-to-one correspondence and fit, and after the connection disk 43 abuts against the bottom of the liquid storage device 1, the connection disk 43 and the bottom of the liquid storage device 1 are connected by welding. Among them, the cooperation between the two positioning posts 6 and the two positioning holes can be stably carried out during the welding process of the connection disk 43 and the bottom of the liquid storage device 1, ensuring that there is no angular deviation after the connection disk 43 is connected to the bottom of the liquid storage device 1. The insertion end of each positioning post 6 is a tip, which is convenient for quickly inserting into the corresponding positioning hole for fitting.

[0038] As Figure 4 and Figure 5 shown, according to another embodiment of the present invention, for the liquid storage device installation structure, the side limiting portion 32 is connected to one side of the top of the bottom connection portion 31 and has a positioning groove on one side for the side of the liquid storage device 1 to be embedded and abutted.

[0039] Here: The bottom connection portion 31 cooperates with the bottom positioning portion 4 to limit and fix the bottom of the liquid storage device 1, and the side limiting portion 32 abuts against the side wall of the liquid storage device 1 and cooperates with the side positioning portion 5 to fix the middle part of the liquid storage device 1, improving the stability of the liquid storage device 1 after installation; since the liquid storage device 1 is cylindrical, the formed positioning groove makes multi-point contact with the side wall of the liquid storage device 1, improving the stability when fixing the middle part of the liquid storage device 1.

[0040] Based on the above solution:

[0041] The side limiting portion 32 has a first positioning hole 321 located on one side of the positioning groove and used for connecting with the side positioning portion 5 and a second positioning hole 322 located at the bottom of the positioning groove and used for connecting with the side positioning portion 5. The first positioning hole 321 and the second positioning hole 322 form two positioning connection points on the side limiting portion 32 to connect with the side positioning portion 5, fixing the middle part of the liquid storage device 1.

[0042] Further, the side positioning portion 5 is a hoop. One end of the hoop has a third positioning hole 51 for cooperating with the first positioning hole 321, and the other end is bent and abuts against the back of the positioning groove and has a fourth positioning hole 52 for cooperating with the second positioning hole 322. The third positioning hole 51 and the fourth positioning hole 52 form two positioning connection points on the hoop to correspond and cooperate with the two positioning connection points formed on the side limiting portion 32 one by one.

[0043] Specifically: the side limiting part 32 has a vertical plate connected to one side of the top of the bottom connecting part 31, and the vertical plate has connecting ears bent toward one side of the bottom connecting part 31 on both sides along the vertical direction. The two connecting ears and the vertical plate are surrounded to form a positioning groove, and the first positioning hole 321 is opened on one of the connecting ears, and the second positioning hole 322 is opened on the vertical plate and away from the side of the connecting ear where the first positioning hole 321 is opened; because during the installation of the liquid reservoir 1 in the chassis 2, when the bottom of the liquid reservoir 1 is fixedly connected, one of the connecting ears of the side limiting part 32 is blocked by other structures in the chassis 2, so one end of the clamp is bent to connect to the back of the vertical plate to facilitate the connection. Among them, when the first positioning hole 321 and the third positioning hole 51 are aligned, they can be threadedly fixed together by screws, and when the second positioning hole 322 and the fourth positioning hole 52 are aligned, they can also be threadedly fixed together by screws.

[0044] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the utility model, a liquid reservoir mounting structure is described, wherein a mounting channel with an opening is formed on the bottom side of the bottom connecting portion 31, and the locking structure 42 includes a threaded column 421 connected to the bottom positioning portion 4 and a fastening nut 422 threadedly connected to the threaded column 421; when connected, the fastening nut 422 extends from the opening into the mounting channel to be threadedly fixed with one end of the threaded column 421 through the clearance hole 312.

[0045] Specifically, the bottom connecting part 31 has an inverted "U"-shaped main structure, a vertical plate is connected to one side of the top of the main structure, two limit grooves 311 and a clearance hole 312 are opened on the top of the main structure, and the installation channel is the space on the lower side of the main structure, which is convenient for the assembly of the locking structure 42. Both ends of the top of the main structure are formed with installation ears that are bent and extended to the outside, so that the bottom connecting part 31 can be stably connected to the bottom wall of the chassis 2.

[0046] The liquid reservoir 1 is specifically installed as follows:

[0047] The two limiting platforms 41 are inserted into the two limiting grooves 311 one by one, and the threaded column 421 passes through the clearance hole 312, and then the fastening nut 422 is extended into the installation channel to be threadedly connected with the threaded column 421 and abutted against the supporting surface at the top of the main structure to complete the fixing of the bottom of the liquid reservoir 1;

[0048] Then align the third positioning hole 51 with the first positioning hole 321 and screw them together through threaded fixation; then align the fourth positioning hole 52 with the second positioning hole 322 and screw them together through threaded fixation; the middle part of the liquid reservoir 1 is fixedly sleeved in the fixed sleeve formed between the clamp and the side limit part 32 to complete the installation of the liquid reservoir 1.

[0049] likeFigure 1 and Figure 2 As shown in Figure 2 , according to another embodiment of the present utility model, the air source heat pump unit includes a chassis 2 and a liquid accumulator 1, and further includes a liquid accumulator installation structure as described in any one of the above embodiments connected between the chassis 2 and the liquid accumulator 1, so that the air source heat pump unit has the structural advantages of the above liquid accumulator installation structure.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered by the scope of the claims of the present utility model.

Claims

1. A liquid storage device installation structure is connected between the liquid storage device and the inner bottom wall of the chassis of an air source heat pump unit, and is characterized in that, Comprising: A mounting base, which is fixedly connected to the inner bottom wall of the chassis and has a bottom connection part and a side limiting part; A bottom positioning part, which is fixedly connected to the bottom of the liquid storage device and cooperates with the bottom connection part for fixation; A side positioning part, which cooperates with the side limiting part to form a fixing sleeve sleeved on the middle part of the liquid storage device.

2. The liquid storage device mounting structure according to claim 1, characterized in that: The bottom connection part has a limiting groove and a relief hole; The bottom positioning part has a limiting platform that penetrates into the limiting groove for positioning and a locking structure that passes through the relief hole for fixation.

3. The liquid storage device mounting structure according to claim 2, characterized in that: The limiting platform has a guiding section with a gradually increasing cross-section from one end to the other end.

4. The liquid storage device mounting structure according to claim 2, characterized in that, The bottom positioning part further has: A connection disk, which is fixedly connected to the bottom of the liquid storage device, and both the limiting platform and the locking structure are connected to the connection disk.

5. A liquid storage device mounting structure according to claim 4, characterized in that: A plurality of positioning holes are formed in the connection disk, and a positioning column fixedly connected to the bottom of the liquid storage device is embedded in each positioning hole.

6. The liquid storage device mounting structure according to claim 1, wherein: The side limiting part is connected to one side of the top of the bottom connection part, and one side thereof has a positioning groove for the side of the liquid storage device to be embedded and abutted.

7. A liquid storage device mounting structure according to claim 6, wherein: The side limiting part has a first positioning hole located on one side of the positioning groove and used for connecting with the side positioning part, and a second positioning hole located at the bottom of the positioning groove and used for connecting with the side positioning part.

8. A liquid storage device installation structure according to claim 7, characterized in that: The side positioning part is a hoop, one end of the hoop has a third positioning hole that cooperates with the first positioning hole, and the other end is bent and abutted against the back of the positioning groove and has a fourth positioning hole that cooperates with the second positioning hole.

9. The liquid storage device mounting structure according to claim 2, characterized in that: An installation channel with an opening is formed on the bottom side of the bottom connection part. The locking structure includes a threaded column connected to the bottom positioning part and a fastening nut threadedly connected to the threaded column; during connection, the fastening nut extends into the installation channel from the opening to be threadedly fixed with one end of the threaded column passing through the relief hole.

10. An air source heat pump unit, comprising a chassis and a liquid reservoir, characterized in that: It further includes a liquid storage device installation structure as described in any one of claims 1-9 connected between the chassis and the liquid storage device.

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