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air conditioner

A technology for air conditioners and compressors, applied in refrigerators, compressors, mechanical equipment, etc., can solve the problems of increased cost and high price of power relays, and achieve the effect of low cost

Active Publication Date: 2022-02-22
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since power relays are expensive, there is a problem of cost increase if power relays are used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0027]

[0028] (The overall structure of the air conditioner)

[0029] figure 1 It is a diagram of the refrigerant cycle system of the air conditioner 900 according to the first embodiment of the present invention. Such as figure 1 As shown, the air conditioner 900 of the present embodiment includes an outdoor unit 960 and an indoor unit 970 , and further includes a gas pipe 982 and a liquid pipe 984 connecting them.

[0030] Furthermore, the outdoor unit 960 includes a compressor 961 , a four-way valve 8 , an outdoor heat exchanger 963 , and an outdoor expansion valve 964 . These are sequentially connected by pipes (no reference numerals). In addition, the outdoor unit 960 includes an outdoor fan 965 and an outdoor fan motor 16 . The outdoor fan 965 is rotationally driven by the outdoor fan motor 16 to cool the outdoor heat exchanger 963 .

[0031] In addition, the indoor unit 970 includes an indoor heat exchanger 973 and an indoor expansion valve 974 . Both are conn...

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PUM

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Abstract

The present invention provides an air conditioner capable of driving a four-way valve of the air conditioner with a low-cost structure. The air conditioner is provided with: a charge accumulating unit (50) having first and second capacitors (52, 54) connected in series via one end (58) of an exciting coil (10) of a four-way valve (8); A circuit (40) that rectifies the AC voltage and charges the charge storage unit (50); a switch unit (70) that is connected in parallel to the charge storage unit (50) and has the other end via the excitation coil (10) (78) the first and second switching elements (72, 74) connected in series; the control unit (24), when the exciting coil (10) is energized in the first direction (Dr), the first PWM The first switching element (72) is driven by the signal (S10), and the second switching element (74) is driven by the second PWM signal (S12) when the exciting coil (10) is energized in the second direction (Da). .

Description

technical field [0001] The present invention relates to air conditioners. Background technique [0002] As the background technology of this technical field, claim 1 of the following patent document 1 states that "the refrigerant control valve is characterized by comprising: a coil wound into a cylinder; directed in a predetermined direction in a magnetic field; a spring that directs the plunger in a direction opposite to the predetermined direction; a permanent magnet that is excited by the coil and passes through the spring when the plunger is directed in a predetermined direction by a certain amount or more The plunger is held in a position in a predetermined direction against the force of the plunger; a member that switches the flow of refrigerant based on the position of the plunger; and an intermittent control section, which intermittently energizes the DC power in the positive direction or the reverse direction to the coil, and the refrigerant control valve is set to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B49/02F25B41/20
CPCF25B13/00F25B2313/02741F25B2400/19F25B2600/25
Inventor 黑崎真由高野玲央小仓洋寿上田和弘尾花紫织
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC