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Refrigeration circulation system and freezing and air conditioner

A circulating system and refrigerant technology, applied in refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems of inability to form control, complex control, and complex structure of the refining tower.

Inactive Publication Date: 2003-06-25
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The refrigerant circulation system used in such conventional refrigerating and air-conditioning apparatuses has a structure in which the rectified components are stored in the rectification column, so the concentration of the refrigerant cannot be stably corresponded to in the refrigerant circuit. Rapid pressure changes when the compressor is started, and the structure of the concentrate column itself is relatively complex and large, and the cost is also high
[0009] In addition, in this existing refrigerating and air-conditioning device, there is no device for detecting splash and judging the composition of the refrigerant, and the composition cannot be controlled. Therefore, it is inevitable that the device cannot be operated in an optimal state.
In addition, the control is extremely complex

Method used

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  • Refrigeration circulation system and freezing and air conditioner
  • Refrigeration circulation system and freezing and air conditioner
  • Refrigeration circulation system and freezing and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0222] Below, according to figure 2 Example 2 of the present invention will be described. In the figure, the same parts as those in Embodiment 1 are given the same symbols, and the description of these parts will be omitted here. like figure 2 shown in figure 1 Among the components of the embodiment, one bypass pipe 102 is bypassed between the discharge side of the compressor 31 and the main expansion device 33 , and the switch mechanism 37 is provided on the bypass pipe 102 . The bypass pipe 101 and the switch mechanism 36 can be abolished or retained.

[0223] Next, its function will be described. The refrigerant flows as shown in the figure. On the other hand, when the compressor is started, the switch mechanism 37 is opened, and the refrigerant gas discharged from the compressor flows into the inlet of the load side heat exchanger 34 . In the load-side heat exchanger 34 , liquid refrigerant often remains due to heat capacity, and the liquid component is rich in hi...

Embodiment 3

[0231] Below, according to image 3 Embodiment 3 of the present invention will be described. In the figure, the same parts as those in Embodiment 1 are given the same symbols, and the description of these parts is omitted. like image 3 As shown, a bypass pipe 103 is bypassed between the outlet side of the heat source side heat exchanger 32 and the suction side of the compressor, and a switch mechanism 38 is provided on the bypass pipe 103 .

[0232] The function is explained below. The refrigerant flows as shown in the figure. When the compressor is started, the switch mechanism 38 is opened, and the uncondensed refrigerant gas at the outlet of the condenser rich in low boiling point components is introduced into the compressor suction side, so that the pressure on the compressor suction side can be suppressed from falling below atmospheric pressure , to prevent compressor damage.

[0233] In addition, when heating a room, the use of the above structure can be effective ...

Embodiment 4

[0235] Hereinafter, Embodiment 4 of the present invention will be described with reference to the drawings. In the drawings, the same parts as those in the Embodiment are denoted by the same symbols, and description thereof will be omitted. like Figure 4 shown in figure 1 Among the components, the bypass pipe 104 bypasses the main throttling device from the outlet side of the heat source side heat exchanger 32 and is connected to the inlet of the load side heat exchanger, and the switch mechanism 39 provided on the bypass pipe.

[0236] Its function is explained below. The refrigerant flows as shown in the figure. When the compressor is started, the switch mechanism 39 is opened to increase the circulation volume of the refrigerant by reducing the difference between the high and low pressures. Stable refrigerant cycle control at start-up.

[0237] This structure is effective when the room is cooled, especially when restarting within 3 minutes.

[0238] In the case of a ...

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PUM

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Abstract

The invention relates to a freezing and air conditioner device capable of maintaining the same in a proper operation state by adjusting a composition of a circulating refrigerant in a refrigerating cycle and varying the composition of the circulating non-azeotropic refrigerant in a freezing cycle. The device comprises a main refrigerant circuit having a compressor 1, a four-way valve 40, a heat source side heat exchanger 32, a supercooling heat exchanger 308, a first throttle device 33, a load side heat exchanger 33 and a low pressure tank 35 connecting with each other sequentially; The device is arranged between the first throttle device 33 and the heat source side heat exchanger 32 on the main refrigerant circuit, and connected in a refrigerant circuit comprised of a bypass piping 500 on a low pressure gas piping of the main refrigerant circuit by a second throttle device and the supercooling heat exchanger 308 for separating the refrigerant circuit, thereby, composition of the refrigerant circulating in circulation system can be calculated so as to control opening of the throttle devices, operating frequency of the compressor and rotational frequency of an outdoor-machine fan, based on an inlet temperature of the second throttle device, and a temperature and pressure between the second throttle device and the supercooling heat exchanger 308.

Description

technical field [0001] The present invention relates to a refrigerant circulation system used in cooling and air-conditioning equipment, wherein the air-conditioning equipment uses a non-azeotropic refrigerant mixed with multiple refrigerants. Background technique [0002] Figure 67 It is an existing refrigerating and air-conditioning device disclosed by Patent Publication No. 6-12201 using a non-azeotropic mixed refrigerant. In the figure, 1 is a compressor, 2 is a load-side heat exchanger, 3 and 4 are main throttling devices, and 6 is a In the heat source side heat exchanger, these devices are connected with refrigerant piping to form the main circuit of refrigerant circulation. 8 is a fine retention tower, which is connected with the top storage 11 by refrigerant piping 17 and refrigerant piping 18 provided with cooling source 9 on the top of the tower. In addition, at the bottom of the above-mentioned fine retention tower, a heating source is provided. The refrigerant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/00F25B13/00F25B41/04
CPCF25B13/00F25B2700/19F25B2313/023F25B9/006F25B41/04F25B2400/16F25B2400/24F25B2313/02741F25B2700/2108F25B41/20F25B41/24
Inventor 森本修人见不二夫宫本守也谷秀一河西智彦隅田嘉裕饭岛等
Owner MITSUBISHI ELECTRIC CORP