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Air conditioner

A technology for air conditioners and compressors, applied in the field of variable capacity air conditioners, capable of solving problems such as damage to compressor components

Inactive Publication Date: 2009-09-23
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
  • Air conditioner
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0062] use figure 1 with figure 2 Embodiment 1 of the present invention will be described.

[0063] Such as figure 1 with figure 2 As shown, it is composed of a control device 1; a compressor 2 capable of changing the output capacity in two stages (called FULL) and capacity-suppressed operation (called SAVE); and detecting the power supply voltage, and The value is sent to the voltage detection device 3 of the control device 1 , and when the voltage detected by the voltage detection device 3 is lower than a predetermined value of the power supply voltage set in the control device 1 , the compressor 2 is operated with reduced capacity. 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] use image 3 with Figure 4 , Embodiment 2 of the present invention will be described.

[0066] Such as image 3 with Figure 4 As shown, 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 a current detection device that detects the operating current and sends its value to the above-mentioned control device 1 The device 4 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] use Figure 5 with Image 6 Embodiment 3 of the present invention will be described.

[0070] Such as Figure 5 with Image 6 As shown, 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 suppression operation; and an output pressure detection device that detects the output pressure and sends its value to the control device 1. The device 5 causes the compressor 2 to perform capacity-reducing operation when the output pressure detected by the output pressure detecting device 5 is higher than the predetermined value of the output pressure set in the control device 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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Abstract

The present invention provides an air conditioner, which relates to a variable capacity air conditioner equipped with a variable compression capacity compressor capable of changing capacity in two stages by switching between FULL and SAVE. The start-up operation of the variable compressor can start the operation of the variable compressor without stopping even in an overload state or a low power supply voltage.

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