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Refrigeration cycle device

A refrigerating cycle and annular technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of reduced reliability of compressors or refrigerating cycle devices

Active Publication Date: 2021-12-17
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Then, when the disproportionation reaction occurs, there is a risk that the pressure inside the compressor will rise abnormally, reducing the reliability of the compressor or refrigeration cycle equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0039] [1-1. Overall structure]

[0040] figure 1 It is a figure which shows the schematic structure of the air conditioner in Embodiment 1 of this invention.

[0041] In this embodiment, the air conditioner 100 is demonstrated as an example of a refrigeration cycle apparatus.

[0042] Such as figure 1 As shown, the air conditioner 100 has an outdoor unit 101 and an indoor unit 102 . The outdoor unit 101 and the indoor unit 102 are connected by a connecting pipe 110 .

[0043] The outdoor unit 101 has a compressor 103 , an outdoor heat exchanger 104 (condenser or evaporator), and an expander 105 . The indoor unit 102 has an indoor heat exchanger 106 (evaporator or condenser).

[0044]The outdoor heat exchanger 104 of the outdoor unit 101 and the indoor heat exchanger 106 of the indoor unit 102 are connected in a ring shape by a connecting pipe 110 . Thus, a refrigeration cycle is formed. Specifically, the compressor 103, the indoor heat exchanger 106 of the indoor unit ...

Embodiment approach 2

[0081] Figure 5 It is a figure which shows the schematic structure of the protective device of the air conditioner of Embodiment 2.

[0082] Such as Figure 5 As shown, in this embodiment, the protection device 200 is composed of a current fuse 203 . The other configurations are the same as those in Embodiment 1, and description thereof will be omitted.

[0083] The current fuse 203 stops supplying the compressor 103 when the detected current value exceeds a predetermined current value (first predetermined value) that is set to be three times or more the maximum current value during normal operation other than when the compressor 103 is started. power supply.

[0084] In addition, the current fuse 203 is configured to stop power supply to the motor 204 within 1 second, preferably within 0.5 seconds, more preferably within 0.1 seconds when the current value exceeds the first predetermined value.

[0085] According to the present embodiment, the protective device 200 uses t...

Embodiment approach 3

[0097] In this embodiment, another example of the condition is shown in which at least one of the stop of the power supply to the compressor 103 and the reduction of the rotation speed of the compressor 103 is performed by the guard device 200 . The rest of the configuration is the same as that of Embodiment 1 and Embodiment 2, so a part of description is omitted.

[0098] In this embodiment, as in Embodiment 1, a working medium (refrigerant) containing an ethylenic fluorohydrocarbon having a double bond is enclosed in the refrigeration cycle. An example of the refrigerant is a working medium containing HFO1123 (1,1,2-trifluoroethylene). As mentioned above, under high temperature and high pressure conditions, when an interlayer short circuit occurs and excessive collisions between refrigerant molecules and discharge electrons occur, the disproportionation reaction of the working medium occurs.

[0099] Protective device 200 such as figure 2 As shown, it is composed of a cur...

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Abstract

The air conditioner (100) as a refrigerating cycle device of the present invention includes: a protective device (200), which is set when the current value of the input current of the motor of the compressor (103) exceeds the start time of the compressor (103) When the first predetermined value is three times or more the maximum current value during normal operation, the current value of the input current to the motor of the compressor (103) exceeds 2 times the current value set at the start of the compressor (103) When the second predetermined value is more than twice, the number of discharged electrons in the discharge space calculated based on the change in the current value of the input current of the motor of the compressor (103) is set to 1.0×10 19 In the case of at least one of the third predetermined value of units / second or more, at least one of stopping power supply to the compressor (103) and reducing the rotation speed of the compressor (103) is performed.

Description

technical field [0001] The present invention relates to a refrigeration cycle device using a working medium containing an ethylenic fluorohydrocarbon having a double bond. Background technique [0002] Generally, in a refrigeration cycle device, a compressor, a radiator or a condenser, a pressure reducer such as a capillary tube or an expansion valve, and an evaporator are connected by piping to form a refrigeration cycle circuit. In addition, a four-way valve can be used as needed. Furthermore, in the refrigeration cycle circuit, a cooling or heating action is performed by circulating a refrigeration cycle working medium (refrigerant or heat medium). [0003] As the working medium for the refrigeration cycle in the refrigeration cycle device, it is known as Freon (Freon is denoted as R○○ or R○○○, and is specified by the American ASHRAE34 standard. Here, ○○ and ○○○ are numbers. Halogenated hydrocarbons derived from methane or ethane, which are denoted as R○○ or R○○○ below....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02C09K5/04F04B49/10F25B1/00
CPCC09K5/04F04B49/10F25B13/00F25B2500/29F25B49/005F25B2500/07F25B2500/08F25B2600/0253
Inventor 清水努苅野健室园宏治佐藤成广伊藤歌奈女桥元任彦鶸田晃
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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