Structure of throttled gas-liquid mixing device of air conditioning system

Abstract

The utility model discloses a structure of a gas-liquid mixing device after throttling of an air conditioning system, which comprises a mixing pipe and a plurality of torsion sheets, the mixing pipe comprises a cylinder and a mixing cavity, the torsion sheets are mounted in the mixing cavity and connected with the inner wall of the cylinder, the torsion sheets are spirally arranged along the axial direction of the mixing pipe, and the torsion sheets are arranged in the mixing cavity. A mixing space is formed between every two adjacent torsion pieces, the multiple torsion pieces are arranged in the mixing pipe, after gas-phase refrigerants and liquid-phase refrigerants enter the mixing pipe, the gas-phase refrigerants and the liquid-phase refrigerants in the mixing pipe are divided through the torsion pieces and move into the mixing spaces to be converged, and the gas-phase refrigerants and the liquid-phase refrigerants are separated, moved and converged repeatedly. Therefore, the purpose of fully mixing the gas-phase refrigerant and the liquid-phase refrigerant is achieved, meanwhile, energy consumption is reduced, cost is reduced, and practicability is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning equipment technology, and in particular relates to the structure of a gas-liquid mixing device after throttling in an air conditioning system. Background Technology

[0002] Currently, in the refrigeration cycle of an air conditioning system, the refrigerant after the throttling device is in a gas-liquid two-phase state. It is then distributed to the heat exchanger through a distributor. Before the distribution, the gaseous and liquid refrigerants are mixed by injection through Venturi plate orifices before being distributed to the distribution holes and pipes, thereby achieving uniform refrigerant distribution. Alternatively, a turbine can be installed before the distribution to change the refrigerant flow direction and use the kinetic energy of the medium to generate vortices to achieve gas-liquid mixing, without using a distributor.

[0003] However, gas-liquid mixing using venturi plate orifice injection has the disadvantages of high pressure and high energy consumption, while turbine mixing suffers from insufficient mixing and poor mixing uniformity. Therefore, how to achieve uniform mixing of gaseous and liquid refrigerants, reduce energy consumption, and thus achieve the best gas-liquid mixing effect is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a structure for a gas-liquid mixing device after throttling in an air conditioning system. Multiple twisting blades are provided in the mixing tube. After the gaseous refrigerant and liquid refrigerant enter the mixing tube, the twisting blades separate the gaseous refrigerant and liquid refrigerant in the mixing tube and move them to the mixing space for merging. By repeating the separation-movement-merging process, the purpose of fully mixing the gaseous refrigerant and liquid refrigerant is achieved, while reducing energy consumption and lowering costs, thus having practicality.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A structure of a gas-liquid mixing device after throttling in an air conditioning system is characterized by: a mixing pipe and a torsion plate. The mixing pipe includes a cylinder and a mixing chamber. The torsion plate is installed in the mixing chamber and connected to the inner wall of the cylinder. The torsion plate is spirally arranged along the axial direction of the mixing pipe. Multiple torsion plates are provided, and a mixing space is formed between each pair of adjacent torsion plates. Multiple torsion plates are provided in the mixing pipe. After the gaseous refrigerant and liquid refrigerant enter the mixing pipe, the torsion plates separate the gaseous refrigerant and liquid refrigerant in the mixing pipe and move them to the mixing space for merging. By repeating the separation-movement-merging process, the purpose of fully mixing the liquid refrigerant is achieved, while reducing energy consumption and lowering costs, making it practical.

[0007] Furthermore, the number of twisting plates is 2 to 15, so as to achieve repeated division, movement and merging of gaseous and liquid refrigerants, ensuring thorough mixing of gaseous and liquid refrigerants.

[0008] Furthermore, the torsion plate is made of stainless steel plate, copper plate, copper alloy plate or carbon steel plate, which gives it good strength and hardness, improves its impact resistance, and also has good corrosion resistance, thereby extending the service life of the torsion plate.

[0009] Furthermore, the thickness of the twisted sheet is 1.5–3.0 mm.

[0010] Furthermore, the end of the cylinder is provided with a flared section to facilitate the connection of the mixing pipe to external pipelines.

[0011] Furthermore, the end of the cylinder is provided with a constricted section.

[0012] Furthermore, the mixing tube has a straight tubular shape.

[0013] Furthermore, the diameter of the mixing pipe is 6–45 mm.

[0014] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0015] In this invention, the mixing tube includes a cylinder and a mixing chamber. A torsion plate is installed in the mixing chamber and connected to the inner wall of the cylinder. The torsion plate is spirally arranged along the axial direction of the mixing tube, and multiple torsion plates are provided. A mixing space is formed between each pair of adjacent torsion plates. Multiple torsion plates are provided in the mixing tube. After the gaseous refrigerant and liquid refrigerant enter the mixing tube, they are separated by the torsion plates and moved to the mixing space for merging. By repeating the separation-movement-merging process, the purpose of fully mixing the gaseous refrigerant and liquid refrigerant is achieved, while reducing energy consumption and lowering costs, thus possessing practicality. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a structural schematic diagram of a first embodiment of the gas-liquid mixing device for a throttling air conditioning system according to the present invention;

[0018] Figure 2 This is a flow chart illustrating the flow distribution in a hot and cold water unit according to this utility model;

[0019] Figure 3 This is a flow chart illustrating the flow distribution of this utility model in a multi-split air conditioning unit;

[0020] Figure 4 This is a structural schematic diagram of a second embodiment of the gas-liquid mixing device for a throttling air conditioning system according to the present invention;

[0021] Figure 5 This is a structural schematic diagram of a third embodiment of the gas-liquid mixing device for an air conditioning system after throttling.

[0022] In the diagram: 1-Mixing pipe; 2-Torsion vane; 3-Cylinder; 4-Mixing chamber; 5-Mixing space; 6-Flanged section; 7-Constricted section; 8-Heat exchanger; 9-First four-way reversing valve; 10-First gas-liquid separator; 11-First compressor; 12-First condenser; 13-Liquid receiver; 14-Expansion valve; 15-Distributor; 16-Evaporator; 17-Second gas-liquid separator; 18-Second four-way reversing valve; 19-Second compressor; 20-Oil separator; 21-Second condenser; 22-Electronic expansion valve; 23-Third four-way reversing valve. Detailed Implementation

[0023] Example 1

[0024] like Figure 1 The diagram shows the structure of a gas-liquid mixing device for an air conditioning system after throttling, according to this utility model. It includes a mixing pipe 1 and a twisting vane 2. The mixing pipe 1 includes a cylinder 3 and a mixing chamber 4. The twisting vane 2 is installed in the mixing chamber 4 and connected to the inner wall of the cylinder 3. The twisting vane 2 is spirally arranged along the axial direction of the mixing pipe 1. Multiple twisting vanes 2 are provided, and a mixing space 5 is formed between each pair of adjacent twisting vanes 2. Multiple twisting vanes 2 are provided in the mixing pipe 1. After the gaseous and liquid refrigerants enter the mixing pipe 1, the twisting vanes 2 can cause the gaseous and liquid refrigerants to mix and form a swirling flow, strengthening the fusion of the gaseous and liquid refrigerants. The twisting vane 2 separates the gaseous and liquid refrigerants in the mixing pipe 1 and moves them to the mixing space 5 for merging. By repeatedly performing this separation-movement-merging process, the purpose of fully mixing the gaseous and liquid refrigerants is achieved, while reducing energy consumption and lowering costs, thus demonstrating practicality.

[0025] In this embodiment, the number of twisting plates 2 can be set to 2 to 15, and can be adjusted appropriately according to the length of the mixing tube 1. The gaseous refrigerant and the liquid refrigerant are repeatedly divided, moved and merged through multiple twisting plates 2, so that the gaseous refrigerant and the liquid refrigerant can be mixed evenly. The twisting plates 2 are made of stainless steel plate, copper plate, copper alloy plate or carbon steel plate, and the thickness of the twisting plates 2 is 1.5 to 3.0 mm, so that they have good strength and hardness, improve impact resistance, and have good corrosion resistance, thereby extending the service life of the twisting plates 2.

[0026] The diameter of the mixing pipe 1 is 6-45mm, depending on the flow rate of the gaseous and liquid refrigerants and the power of the air conditioner.

[0027] The cylinder 3 has a flared end 6, which facilitates the connection of the mixing pipe 1 to the external pipe. When connecting, the external pipe can be inserted into the flared end 6 and fixed by welding.

[0028] like Figure 2 As shown, this embodiment also provides a hot and cold water unit, which adopts the gas-liquid mixing device described in this embodiment. The mixing pipe 1 of the gas-liquid mixing device is installed on the heat exchanger 8. Specifically, the heat exchanger 8 is connected to the first gas-liquid separator 10 through the first four-way reversing valve 9. The first gas-liquid separator 10 is connected to the first compressor 11. The first compressor 11 is connected to the first condenser 12 through the first four-way reversing valve 9. The first condenser 12 is connected to the liquid receiver 13. The liquid receiver 13 is connected to the mixing pipe 1 through the expansion valve 14.

[0029] like Figure 3 As shown, this embodiment also provides a multi-split air conditioning unit, which adopts the gas-liquid mixing device described in this embodiment. The gas-liquid mixing device is installed on the distributor 15 of the mixing pipe 1. Specifically, the distributor 15 is connected to the evaporator 16, the evaporator 16 is connected to the second gas-liquid separator 17, the second gas-liquid separator 17 is connected to the second compressor 19 through the second four-way reversing valve 18, the second compressor 19 is connected to the oil separator 20, the oil separator 20 is connected to the second condenser 21 through the third four-way reversing valve 23, and the second condenser 21 is connected to the mixing pipe 1 through the electronic expansion valve 22.

[0030] Example 2

[0031] like Figure 2 As shown, based on the structure of Embodiment 1, Embodiment 2 makes another design to the end of the cylinder 3. The end of the cylinder 3 is provided with a constricted part 7. Setting the end of the cylinder 3 to a constricted state facilitates the connection between the mixing pipe 1 and the external pipe.

[0032] Example 3

[0033] like Figure 3 As shown, based on the structure of Embodiment 1, Embodiment 3 makes another design to the cylinder 3. The cylinder 3 of the mixing pipe 1 is a straight pipe, which makes the connection between the mixing pipe 1 and the external pipe flexible and increases its applicability.

[0034] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A structure of a gas-liquid mixing device after throttling in an air conditioning system, characterized in that: The device includes a mixing tube and a twisting plate. The mixing tube includes a cylinder and a mixing cavity. The twisting plate is installed in the mixing cavity and connected to the inner wall of the cylinder. The twisting plate is arranged in a spiral shape along the axial direction of the mixing tube. There are multiple twisting plates, and a mixing space is formed between each pair of adjacent twisting plates.

2. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The number of twisted plates is 2 to 15.

3. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The torsion plate is made of stainless steel plate, copper plate, copper alloy plate or carbon steel plate.

4. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The thickness of the torsion plate is 1.5 to 3.0 mm.

5. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The end of the cylinder is provided with a flared section.

6. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The end of the cylinder is provided with a constricted section.

7. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The cylindrical body of the mixing tube is a straight tube.

8. The structure of the gas-liquid mixing device after throttling in an air conditioning system according to claim 1, characterized in that: The diameter of the mixing pipe is 6–45 mm.

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