Split outdoor unit adopting micro-channel condenser

Abstract

The utility model relates to the technical field of refrigeration, and discloses a split outdoor unit adopting a micro-channel condenser, which comprises an outdoor unit shell, and a mechanical bin and a heat exchange bin are arranged in the outdoor unit shell; a micro-channel heat exchanger and a fan set which are arranged front and back are fixed in the heat exchange bin, one side of the micro-channel heat exchanger is connected with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe extend into the mechanical bin. The micro-channel heat exchanger is used for replacing an existing copper pipe fin type heat exchanger, the heat exchange efficiency can be greatly improved under the same heat exchange area, and meanwhile the problems that an outdoor unit is large in size and large in mass are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to an outdoor unit of a split air conditioner adopting a microchannel condenser. Background Art

[0002] The existing outdoor unit of a split air conditioner generally uses a copper tube fin condenser for heat exchange. In order to improve the heat exchange effect, the copper tube fin condenser is increased in size and quantity to meet the energy efficiency requirements. However, this also increases the volume and mass of the outdoor unit, and the manufacturing and operating costs become higher. Content of the Utility Model

[0003] The purpose of the utility model is to provide an outdoor unit of a split air conditioner adopting a microchannel condenser. By replacing the existing copper tube fin heat exchanger with a microchannel heat exchanger, the heat exchange efficiency can be greatly improved under the same heat exchange area, and at the same time, the problems of large volume and large mass of the outdoor unit are solved.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] An outdoor unit of a split air conditioner adopting a microchannel condenser includes an outer machine housing, and a mechanical chamber and a heat exchange chamber are arranged inside the outer machine housing;

[0006] A microchannel heat exchanger and a fan group are fixedly arranged in the heat exchange chamber in the front and back. One side of the microchannel heat exchanger is connected with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe extend into the mechanical chamber.

[0007] Through the above technical solutions, by replacing the existing copper tube fin heat exchanger with a microchannel heat exchanger, the heat exchange efficiency can be effectively improved. At the same time, since the microchannel heat exchanger is thinner and lighter, the volume and weight of the outdoor unit can be greatly reduced;

[0008] Components such as a compressor and a liquid storage tank are placed in the mechanical chamber. The liquid inlet pipe and the liquid outlet pipe are respectively connected to the corresponding components. The refrigerant enters the microchannel heat exchanger from the liquid inlet pipe, then exchanges heat with the outside through the microchannel heat exchanger, and then flows out from the liquid outlet pipe; the fan group is turned on to suck air for the microchannel, which can further improve the heat exchange efficiency.

[0009] The utility model is further arranged as follows: the microchannel heat exchanger includes two parallel circular header pipes and a plurality of linearly distributed flat pipes fixed between the two circular header pipes, and corrugated fins are arranged between adjacent flat pipes;

[0010] Each circular header pipe is inserted into a corresponding support bar with a "C"-shaped cross section, and the support bar is fixed in the heat exchange chamber;

[0011] A plurality of support rods are fixed on the outer wall of the circular header pipe, and the support rods are inserted into the support holes of the support bar.

[0012] Through the above technical solution, the two support bars can limit the left and right positions of the microchannel heat exchanger, and the support rod inserted into the support hole can limit the up and down directions of the microchannel heat exchanger, thereby limiting the activity and supporting the microchannel heat exchanger.

[0013] The utility model is further configured as follows: the outer wall of the circular manifold is covered in a rubber strip with a "C"-shaped cross section, a plurality of step bosses are formed on the rubber strip, and a plug hole is sleeved in the step bosses; the support rod is inserted into the plug hole, the small end of the step boss is inserted into the support hole, and the step surface of the step boss is pressed against the inner end surface of the support hole;

[0014] The outer wall of the rubber strip is pressed against the inner wall of the supporting strip.

[0015] The rubber strip can protect the round header, and the elasticity of the rubber strip and the step boss can adapt to the deformation of the microchannel heat exchanger due to thermal expansion and contraction, and the flexible fixing method of the rubber strip and the step boss can prevent the microchannel heat exchanger from deformation and cracking.

[0016] The utility model is further configured as follows: a honeycomb mesh filter plate is fixed at the front end of the heat exchange bin;

[0017] Reinforcement ribs are fixed on the honeycomb filter plate, the side wall of the heat exchange chamber and the side wall of the mechanical chamber.

[0018] The inhaled air can be filtered through the honeycomb mesh filter plate, and at the same time it can protect the microchannel heat exchanger.

[0019] The reinforcing ribs are in an "X" shape. The strength of the outer housing can be improved by providing the reinforcing ribs, and deformation such as concavity and convexity can be effectively prevented.

[0020] The utility model is further configured as follows: the fan group is provided with four fans, and the four fans are arranged in a 2*2 matrix;

[0021] A reinforcing rib ring is fixed between the middle parts of the plurality of blades of the fan, and the structural stability of the blades can be increased by the reinforcing rib ring.

[0022] The outstanding effects of the utility model are:

[0023] Compared with the existing technology, the microchannel heat exchanger replaces the existing copper tube fin heat exchanger, which can greatly improve the heat exchange efficiency under the same heat exchange area, and at the same time solves the problems of large size and mass of the outdoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a front view of the utility model;

[0026] Figure 3 for Figure 2 Schematic diagram after the honeycomb filter plate and microchannel heat exchanger are hidden;

[0027] Figure 4 It is a three-dimensional cross-sectional view of the utility model;

[0028] Figure 5 for Figure 4 A partial enlarged view of A;

[0029] Figure 6 It is a schematic diagram of the assembly of the microchannel heat exchanger and the supporting bars and other components of the utility model;

[0030] Figure 7 It is a top view of the utility model;

[0031] Figure 8 for Figure 7 Cross-sectional view of BB.

[0032] Reference numerals: 10, outer housing; 11, honeycomb filter plate; 12, reinforcing ribs;

[0033] 101. Mechanical warehouse; 102. Heat exchange warehouse;

[0034] 20. microchannel heat exchanger; 21. liquid inlet pipe; 22. liquid inlet pipe; 23. support bar; 24. rubber strip;

[0035] 201, round header; 202, flat tube; 203, wavy fin; 204, support rod;

[0036] 241, step boss; 242, socket;

[0037] 30. Fan assembly; 301. Fan blades; 302. Reinforcement rib ring. DETAILED DESCRIPTION

[0038] 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.

[0039] The following references Figures 1 to 8 The utility model is described as follows:

[0040] A split outdoor unit using a microchannel condenser comprises an outdoor housing 10, wherein a mechanical compartment 101 and a heat exchange compartment 102 are arranged inside the outdoor housing 10;

[0041] A microchannel heat exchanger 20 and a fan group 30 are fixedly arranged front and back in the heat exchange chamber 102. One side of the microchannel heat exchanger 20 is connected with a liquid inlet pipe 21 and a liquid outlet pipe 22, and the liquid inlet pipe 21 and the liquid outlet pipe 22 extend into the machine chamber 101.

[0042] By replacing the existing copper tube fin heat exchanger with a microchannel heat exchanger, the heat exchange efficiency can be effectively improved. At the same time, since the microchannel heat exchanger is thinner and lighter, the volume and weight of the outdoor unit can be greatly reduced.

[0043] Components such as a compressor and a liquid storage tank are placed in the machine chamber. The liquid inlet pipe and the liquid outlet pipe are respectively connected to the corresponding components. The refrigerant enters the microchannel heat exchanger through the liquid inlet pipe, then exchanges heat with the outside through the microchannel heat exchanger, and then flows out through the liquid outlet pipe. The fan group is turned on to suck air for the microchannel, which can further improve the heat exchange efficiency.

[0044] The microchannel heat exchanger 20 includes two circular headers 201 arranged in parallel and a plurality of flat tubes 202 linearly and evenly arranged between the two circular headers 201. Corrugated fins 203 are arranged between adjacent flat tubes 202.

[0045] Each circular header 201 is inserted into a corresponding support bar 23 with a "C"-shaped cross-section, and the support bar 23 is fixed in the heat exchange chamber 102.

[0046] A plurality of support rods 204 are fixed on the outer wall of the circular header 201, and the support rods 204 are inserted into the support holes 231 of the support bar 23.

[0047] The two support bars can limit the left and right positions of the microchannel heat exchanger, and the insertion of the support rods into the support holes can limit the up and down directions of the microchannel heat exchanger, thereby restricting the movement and supporting the microchannel heat exchanger.

[0048] The outer wall of the circular header 201 is covered in a rubber strip 24 with a "C"-shaped cross-section. A plurality of stepped bosses 241 are formed on the rubber strip 24, and sockets 242 are sleeved in the stepped bosses 241. The support rods 204 are inserted into the sockets 242, the small end portions of the stepped bosses 241 are inserted into the support holes 231, and the stepped surfaces of the stepped bosses 241 are pressed against the inner end surfaces of the support holes 231.

[0049] The outer wall of the rubber strip 24 is pressed against the inner wall of the support bar 23.

[0050] The rubber strip can protect the circular header. Through the elasticity of the rubber strip and the stepped bosses, the deformation caused by thermal expansion and contraction of the microchannel heat exchanger can be adapted. The flexible fixing method of the rubber strip and the stepped bosses can prevent the microchannel heat exchanger from deforming and cracking.

[0051] A honeycomb mesh filter plate 11 is fixed at the front end of the heat exchange chamber 102.

[0052] Reinforcing ribs 12 are fixed on the honeycomb filter plate 11 , the side wall of the heat exchange chamber 102 , and the side wall of the mechanical chamber 101 .

[0053] The inhaled air can be filtered through the honeycomb mesh filter plate, and at the same time it can protect the microchannel heat exchanger.

[0054] The reinforcing ribs 12 are in an "X" shape. The strength of the outer casing can be improved by providing the reinforcing ribs, and deformation such as depression and convexity can be effectively prevented.

[0055] The fan group 30 is provided with four fans, and the four fans are arranged in a 2*2 matrix;

[0056] A reinforcing rib ring 302 is fixed between the middle parts of the plurality of blades 301 of the fan. The reinforcing rib ring can increase the structural stability of the blade.

[0057] 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 split outdoor unit using a microchannel condenser, comprising an outdoor unit housing (10), characterized in that: Inside the outer machine housing (10), a mechanical compartment (101) and a heat exchange compartment (102) are provided; Inside the heat exchange compartment (102), a microchannel heat exchanger (20) and a fan group (30) arranged front and back are fixed. One side of the microchannel heat exchanger (20) is connected with a liquid inlet pipe (21) and a liquid outlet pipe (22), and the liquid inlet pipe (21) and the liquid outlet pipe (22) extend into the mechanical compartment (101).

2. A split outdoor unit using a microchannel condenser according to claim 1, characterized in that: The microchannel heat exchanger (20) includes two parallel circular headers (201) and a plurality of linearly distributed flat tubes (202) fixed between the two circular headers (201). Corrugated fins (203) are arranged between adjacent flat tubes (202); Each circular header (201) is inserted into a corresponding support bar (23) with a "C"-shaped cross-section, and the support bar (23) is fixed inside the heat exchange compartment (102); A plurality of support rods (204) are fixed on the outer wall of the circular header (201), and the support rods (204) are inserted into the support holes (231) of the support bar (23).

3. A split outdoor unit using a microchannel condenser according to claim 2, characterized in that: The outer wall of the circular header (201) is covered in a rubber strip (24) with a "C"-shaped cross-section. A plurality of stepped bosses (241) are formed on the rubber strip (24), and sockets (242) are sleeved inside the stepped bosses (241); the support rods (204) are inserted into the sockets (242), the small end of the stepped boss (241) is inserted into the support hole (231), and the stepped surface of the stepped boss (241) is pressed against the inner end surface of the support hole (231); The outer wall of the rubber strip (24) is pressed against the inner wall of the support bar (23).

4. The split outdoor unit using a microchannel condenser according to claim 1, characterized in that: A honeycomb mesh filter plate (11) is fixed at the front end of the heat exchange compartment (102); Reinforcing rib strips (12) are fixed on the honeycomb mesh filter plate (11), the side walls of the heat exchange compartment (102), and the side walls of the mechanical compartment (101).

5. A split outdoor unit using a microchannel condenser according to claim 4, characterized in that: The reinforcing rib strips (12) are in an "X" shape.

6. The split outdoor unit using a microchannel condenser according to claim 1, characterized in that: Four fans are provided in the fan group (30), and the four fans are arranged in a 2*2 matrix; A reinforcing rib ring (302) is fixed between the middles of the plurality of fan blades (301) of the fan.

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