Refrigeration cycle device

A technology of circulation device and expansion device, which is applied in the field of refrigeration cycle devices, can solve the problems such as the decline of refrigeration capacity of refrigeration cycle devices, and achieve the effects of preventing condensation, increasing condensation temperature, and preventing condensation

Active Publication Date: 2017-05-31
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when flash gas is generated, the flow rate of the refrigerant flowing into the throttling device on the downstr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Embodiment 1.

[0023] figure 1 It is an example of the refrigerant circuit configuration of the refrigeration cycle apparatus 500 according to Embodiment 1 of the present invention.

[0024] Structure description of refrigeration cycle device 500

[0025] figure 1 The refrigeration cycle device 500 has: a load device 200, which is equivalent to a refrigerator, for example, is installed indoors to cool a space where food and other storage items are placed in the refrigerator; a heat source device 100, for example, Installed outdoors, etc.; the pipe 300 and the pipe 400 that connect the load device 200 and the heat source device 100. The pipe 300 is a pipe through which liquid refrigerant passes, and the pipe 400 is a pipe through which intake gas passes.

[0026] The refrigeration cycle device 500 has: a compressor 1, which compresses and discharges the refrigerant; a condenser 2 (radiator), which condenses the refrigerant; and a liquid storage part 3, which condenses the refr...

Example Embodiment

[0066] Implementation mode 2.

[0067] In the first embodiment, it is described that the condenser fan 7 is stopped or decelerated when the temperature difference obtained by subtracting the value of the piping temperature of the piping 300 from the value of the suction temperature of the condenser 2 exceeds the set value. However, in this embodiment, the configuration in the case where the setting value can be further changed from the heat source device 100 and the air volume of the condenser fan 7 can be changed according to the setting value.

[0068] The refrigeration cycle apparatus 500 of the present embodiment includes the control device 10 in the heat source device 100 including a setting device 11 that is a display unit such as a setting value and an input unit of the setting value.

[0069] The refrigerant circuit diagram and operation of the refrigeration cycle apparatus 500 of this embodiment are the same as those of the first embodiment.

[0070] The control device 10 per...

Example Embodiment

[0074] Implementation mode 3.

[0075] In this embodiment, the refrigeration cycle device 500 of the first and second embodiments not only adjusts the air volume of the condenser fan 7, but also uses the structure when dew condensation is suppressed by adjusting the opening of the second expansion device 42. .

[0076] By adjusting the opening degree of the second expansion device 42, the flow of the refrigerant cycle during condensation is suppressed

[0077] The refrigeration cycle apparatus 500 of this embodiment is the same refrigerant circuit as the first and second embodiments.

[0078] By instructing the control device 10 from the setting device 11, the refrigeration cycle device 500 can switch to a mode of operation in which the refrigerant passing through the subcooling device 4 has a greater degree of subcooling, that is, the refrigeration capacity is prioritized Mode, and the mode that does not increase the degree of subcooling, that is, the condensation suppression priori...

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PUM

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Abstract

Provided is a refrigeration cycle device that increases refrigeration capacity in a supercooling device, and is able to prevent condensation on pipes without performing an insulating process on the pipes. This refrigeration cycle device is equipped with: a condenser fan 7 that sends air to a condenser 2; a supercooling device 4 that is connected downstream from the condenser 2 and upstream from a first expansion device 5, and that supercools a refrigerant flowing from the condenser 2; a pipe temperature detection means 9 that detects the temperature of a refrigerant pipe 300 connecting a load device 200 and a heat source device 100 in which the refrigerant flowing from the supercooling device 4 flows; an outside temperature detection means 8 that detects the temperature of air drawn into the condenser 2; and a control device 10 that controls the rotational speed of the condenser fan 7 such that the difference when the temperature of the refrigerant pipe connecting the heat source device 100 and the load device 200 is subtracted from the temperature of the air drawn into the condenser 2 does not exceed a set value.

Description

technical field [0001] The invention relates to a refrigeration cycle device. Background technique [0002] Generally, a refrigeration cycle device used in an air conditioner or the like includes a compressor, a condenser (radiator), an expansion valve, and an evaporator, which are connected by piping through which a refrigerant circulates. The high-temperature and high-pressure refrigerant compressed by the compressor is liquefied by exchanging heat with the outside air in the condenser, and the liquefied refrigerant becomes a low-temperature fluid mixed with gas and liquid through the expansion valve, and is exchanged in the evaporator for gas change. The vaporized refrigerant enters the compressor again. The refrigeration cycle apparatus circulates the refrigerant as described above. [0003] Among the conventional refrigerating cycle devices, various refrigerating cycle devices further including a subcooling device for subcooling the refrigerant flowing out of the con...

Claims

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Application Information

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IPC IPC(8): F25B1/00F24F11/02
CPCF24F11/89F25B1/00
Inventor 岐部笃史池田隆有井悠介
Owner MITSUBISHI ELECTRIC CORP
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