Flexible mounting structure of micro-channel heat exchanger

Abstract

The utility model relates to the technical field of refrigeration, and discloses a flexible mounting structure of a micro-channel heat exchanger, which comprises the micro-channel heat exchanger and a pair of U-shaped supporting strips which are symmetrically arranged, and the pair of U-shaped supporting strips are fixed on an outdoor unit shell; two headers of the micro-channel heat exchanger are inserted into the corresponding U-shaped supporting strips in a sleeved mode respectively, and openings of the two U-shaped supporting strips are oppositely arranged. Supporting rubber strips are clamped between the inner walls of the three sides of the U-shaped supporting strips and the outer walls of the corresponding headers. The supporting rubber strip is arranged between the micro-channel heat exchanger header and the U-shaped supporting strip, so that the micro-channel heat exchanger can be flexibly fastened, and the deformation quantity of the micro-channel heat exchanger caused by thermal expansion and cold contraction can be counteracted.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a flexible installation structure of a microchannel heat exchanger. Background Art

[0002] The outdoor unit of the split unit generally uses a copper tube fin type condenser for heat exchange. In order to improve the heat exchange effect, the energy efficiency requirement is met by increasing the number of copper tube fin type condensers, but at the same time, the volume and mass of the outdoor unit are also increased, and the manufacturing and operating costs become higher. Therefore, many existing split unit outdoor units use microchannel heat exchangers to replace the existing copper tube fin type condensers, which can reduce the overall mass and volume of the outdoor unit without reducing the heat exchange efficiency, but the existing microchannel heat exchangers are generally directly fixed on the outdoor unit housing. However, the microchannel heat exchanger is prone to deformation due to thermal expansion and contraction during operation. It is connected to the housing by a fixed method, and the deformation of the microchannel heat exchanger cannot be released, thereby squeezing itself and causing the microchannel in the flat tube to be blocked, thereby affecting the heat exchange power and service life of the microchannel heat exchanger. Utility Model Content

[0003] The utility model aims to provide a flexible installation structure of a microchannel heat exchanger. By arranging a supporting rubber strip between the microchannel heat exchanger header and the U-shaped supporting strip, the microchannel heat exchanger can be flexibly fastened and the deformation of the microchannel heat exchanger caused by thermal expansion and contraction can be offset.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A flexible installation structure of a microchannel heat exchanger comprises a microchannel heat exchanger and a pair of symmetrically arranged U-shaped support bars, wherein the pair of U-shaped support bars are fixed to an outdoor unit housing; two headers of the microchannel heat exchanger are respectively inserted into corresponding U-shaped support bars, and the mouths of the two U-shaped support bars are arranged opposite to each other;

[0006] Support rubber strips are sandwiched between the inner walls of three sides of the U-shaped support strip and the outer walls of the corresponding collecting pipes.

[0007] Through the above technical solution, the header of the microchannel heat exchanger is clamped between the U-shaped support strips by the support rubber strips, and the microchannel heat exchanger can be relatively fixed by the friction between the support rubber strips and the header; the support rubber strips have a large deformation capacity and can resist the deformation of the microchannel heat exchanger caused by thermal expansion and contraction, thereby flexibly fixing the microchannel heat exchanger, that is, restricting the large-scale movement of the microchannel heat exchanger but not restricting its small-scale movement, thereby effectively protecting the microchannel heat exchanger and reducing the vibration effect on the microchannel heat exchanger during the operation of the unit.

[0008] The utility model is further configured as follows: the side of the support rubber strip that is against the U-shaped support strip is bonded to the U-shaped support strip, and a pair of protrusions are formed on the side of the support rubber strip that faces the header, and the protrusions are pressed against the outer wall of the header.

[0009] A cavity is formed in the middle of the supporting rubber strip, and the cavity is located between the two protrusions.

[0010] Through the above technical solution, the deformation capacity of the supporting rubber strip can be increased by setting the cavity; and the header can be supported and restricted at multiple points by setting the protrusions.

[0011] The utility model is further configured as follows: an end protection mechanism is respectively provided at the upper end and the lower end of the microchannel heat exchanger;

[0012] The end protection mechanism comprises an arched bar with low ends and high middle, and plug rods are formed at both ends of the arched bar, and the plug rods are inserted and sleeved on the ends of the corresponding headers.

[0013] By arranging arched bars at the upper and lower ends of the microchannel heat exchanger, the upper and lower ends of the microchannel heat exchanger can be protected, thereby effectively preventing the two outermost flat tubes of the microchannel heat exchanger from being damaged.

[0014] The utility model is further configured as follows: a supporting rubber strip is fixed on a side wall of the arched strip away from the flat tube of the microchannel heat exchanger.

[0015] Through the above technical solution, after installation, the supporting rubber strip on the arched strip is pressed against the upper side wall and the lower side wall of the outdoor unit housing, and the friction resistance between the supporting rubber strip and the outdoor unit housing can further limit the flexibility of the microchannel heat exchanger.

[0016] The outstanding effects of the utility model are:

[0017] Compared with the prior art, by arranging a supporting rubber strip between the microchannel heat exchanger header and the U-shaped supporting strip, the microchannel heat exchanger can be flexibly fastened and the deformation of the microchannel heat exchanger caused by thermal expansion and contraction can be offset;

[0018] The two ends of the microchannel heat exchanger can be protected by the end protection mechanism, which can further protect the microchannel heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a front view of the utility model;

[0021] Figure 3 for Figure 1 A partial enlarged view of A;

[0022] Figure 4 for Figure 3 The structural schematic diagram of the end protection mechanism is hidden;

[0023] Figure 5 for Figure 2 A partial enlarged view of B;

[0024] Figure 6 It is a structural schematic diagram of the end protection mechanism of the utility model.

[0025] Reference numerals: 10, microchannel heat exchanger; 101, header; 102, flat tube;

[0026] 20. U-shaped support bar;

[0027] 30, supporting rubber strip; 301, protrusion; 302, cavity;

[0028] 40. End protection mechanism; 401. Arch bar; 402. Insert rod. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] The following references Figures 1 to 6 The utility model is described as follows:

[0031] A flexible installation structure of a microchannel heat exchanger, comprising a microchannel heat exchanger 10 and a pair of symmetrically arranged U-shaped support bars 20, wherein the pair of U-shaped support bars 20 are fixed to an outdoor unit housing; two headers 101 of the microchannel heat exchanger 10 are respectively inserted into corresponding U-shaped support bars 20, and the mouths of the two U-shaped support bars 20 are arranged opposite to each other;

[0032] A supporting rubber strip 30 is sandwiched between the inner walls of three sides of the U-shaped supporting strip 20 and the outer wall of the corresponding manifold 101 .

[0033] The header of the microchannel heat exchanger is clamped between the U-shaped support strips by the support strips. The friction between the support strips and the header can make the microchannel heat exchanger relatively fixed. The support strips have a large deformation capacity and can resist the deformation of the microchannel heat exchanger caused by thermal expansion and contraction, thereby flexibly fixing the microchannel heat exchanger, that is, restricting the large-scale movement of the microchannel heat exchanger but not restricting its small-scale movement, thereby effectively protecting the microchannel heat exchanger and reducing the vibration impact on the microchannel heat exchanger during unit operation.

[0034] The side of the support strip 30 facing the U-shaped support strip 20 is bonded to the U-shaped support strip 20 . A pair of protrusions 301 are formed on the side of the support strip 30 facing the manifold 101 . The protrusions 301 are pressed against the outer wall of the manifold 101 .

[0035] A cavity 302 is formed in the middle of the supporting rubber strip 30 , and the cavity 302 is located between the two protrusions 301 .

[0036] The deformation capacity of the supporting rubber strip can be increased by setting the cavity; and the header can be supported and restricted at multiple points by setting the protrusions.

[0037] An end protection mechanism 40 is respectively provided at the upper end and the lower end of the microchannel heat exchanger 10;

[0038] The end protection mechanism 40 includes an arched bar 401 with low ends and high middle. Insertion rods 402 are formed at both ends of the arched bar 401 . The insertion rods 402 are inserted into the ends of the corresponding headers 101 .

[0039] By arranging arched bars at the upper and lower ends of the microchannel heat exchanger, the upper and lower ends of the microchannel heat exchanger can be protected, thereby effectively preventing the two outermost flat tubes of the microchannel heat exchanger from being damaged.

[0040] A supporting rubber strip 30 is fixed on a side wall of the arch strip 401 away from the flat tube 102 of the microchannel heat exchanger 10 .

[0041] After installation, the supporting rubber strip on the arched strip is pressed against the upper side wall and the lower side wall of the outdoor unit housing. The friction resistance between the supporting rubber strip and the outdoor unit housing can further limit the flexibility of the microchannel heat exchanger.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A flexible installation structure for a microchannel heat exchanger, comprising a microchannel heat exchanger (10) and a pair of symmetrically arranged U-shaped support bars (20), wherein the pair of U-shaped support bars (20) are fixed to an outdoor unit housing; characterized in that: The two headers (101) of the microchannel heat exchanger (10) are respectively inserted into corresponding U-shaped support bars (20), and the mouths of the two U-shaped support bars (20) are arranged opposite to each other; Support rubber strips (30) are sandwiched between the inner walls of three sides of the U-shaped support strip (20) and the outer wall of the corresponding header (101).

2. The flexible installation structure of a microchannel heat exchanger according to claim 1, characterized in that: The side of the support rubber strip (30) facing away from the U-shaped support strip (20) is bonded to the U-shaped support strip (20), and a pair of protrusions (301) are formed on the side of the support rubber strip (30) facing the header (101), and the protrusions (301) are pressed against the outer wall of the header (101).

3. The flexible installation structure of a microchannel heat exchanger according to claim 2, characterized in that: A cavity (302) is formed in the middle of the supporting rubber strip (30), and the cavity (302) is located between the two protrusions (301).

4. The flexible installation structure of a microchannel heat exchanger according to claim 1, characterized in that: An end protection mechanism (40) is respectively provided at the upper end and the lower end of the microchannel heat exchanger (10); The end protection mechanism (40) comprises an arched bar (401) with low ends and high middle, and plug rods (402) are formed at both ends of the arched bar (401), and the plug rods (402) are inserted into the ends of the corresponding headers (101).

5. The flexible installation structure of a microchannel heat exchanger according to claim 4, characterized in that: A supporting rubber strip (30) is fixed on a side wall of the arched strip (401) away from the flat tube (102) of the microchannel heat exchanger (10).

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