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Air conditioner

A technology for air conditioners and compressors, which is applied in the field of variable capacity air conditioners, and can solve problems such as damage to compressor components

Inactive Publication Date: 2007-06-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this happens, the compressor runs repeatedly and intermittently, which may cause damage to the compressor components

Method used

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  • Air conditioner
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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0062] Embodiment 1 of this invention is demonstrated using FIG.1 and FIG.2.

[0063] As shown in Fig. 1 and Fig. 2, it is constituted to include a control device 1; a compressor 2 capable of changing capacity in two stages of full-capacity operation (referred to as FULL) and capacity-suppressed operation (referred to as SAVE) for the output volume; and Detect the power supply voltage and send its value to the voltage detection device 3 of the control device 1. When the voltage detected by the voltage detection device 3 is lower than the specified value of the power supply voltage set in the control device 1, the compressor 2 is activated. Perform ability suppression operation. According to the air conditioner with the above structure, in areas with poor voltage conditions, even when the power supply voltage is low, the overload protection device (OLP) will not work, and the load on the compressor can be reduced, enabling air-conditioning operation.

Embodiment approach 2

[0065] Embodiment 2 of the present invention will be described using FIG. 3 and FIG. 4 .

[0066] As shown in Figures 3 and 4, it is composed of a control device 1; a compressor 2 capable of changing the output capacity in two stages of full-capacity operation and capacity-suppressed operation; and detecting the operating current and sending its value to the above-mentioned The current detection device 4 of the control device 1 causes the compressor 2 to perform capacity suppression operation when the current detected by the current detection device 4 is higher than the predetermined value of the operating current set in the control device 1 .

[0067] According to the air conditioner with the above structure, even if the operating current of the compressor is high, the OLP does not work in areas with poor voltage conditions, and the load on the compressor can be reduced, enabling air-conditioning operation.

Embodiment approach 3

[0069] Embodiment 3 of this invention is demonstrated using FIG.5 and FIG.6.

[0070] As shown in Figures 5 and 6, it is composed of a control device 1; a compressor 2 capable of changing the capacity of the output volume in two stages of full capacity operation and capacity restraint operation; and detecting the output pressure and sending its value to the control The output pressure detecting means 5 of the device 1 controls the capacity of the compressor 2 when the output pressure detected by the output pressure detecting means 5 is higher than the predetermined value of the output pressure set in the control means 1 .

[0071] According to the air conditioner with the above structure, even when the outside temperature rises, the refrigeration cycle is overloaded, and the output pressure is high, the OLP does not operate, and the load on the compressor can be reduced to perform air-conditioning operation.

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PUM

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Abstract

An air conditioner of variable capacity type comprises a variable-capacity compressor capable of varying capacity in two levels by switching between FULL and SAVE. The variable-capacity compressor can start operation at SAVE so as to allow the air conditioner to start operation without causing a shutdown of the variable-capacity compressor in an overloaded condition or in a low power-supply voltage environment.

Description

technical field [0001] The present invention relates to a capacity-variable air conditioner equipped with a compressor capable of switching the output capacity of the compressor in two stages of capacity. Background technique [0002] A compressor that can be changed in two stages by switching between full-capacity operation (hereinafter referred to as FULL) that increases the output volume of the compressor and capacity-suppressed operation (hereinafter referred to as SAVE) that reduces the output volume of the compressor capacity, the start-up of the existing air conditioner equipped with this kind of compressor is to start the compressor in a FULL mode. Therefore, when starting in an environment where both the indoor temperature and the outdoor temperature are high (that is, in an overload state), the following problems arise when the pressure is too high or the power supply voltage is low. When the inrush current value rises, the output of the motor inside the compresso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 波多野弘司神崎秀幸山田吉人
Owner PANASONIC CORP