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Valve device

A valve device, driving device technology, applied in the direction of valve device, transmission device, valve operation/release device, etc., can solve the problems affecting the performance of valve device and so on

Inactive Publication Date: 2021-01-12
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the case of using a screw mechanism as in Patent Document 1, since there is a gap (Japanese: がたつき) in the meshing part where the external thread part and the internal thread part mesh, this becomes a gap of the spool and may affect the function of the valve device. performance

Method used

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Examples

Experimental program
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Embodiment Construction

[0020] Hereinafter, one embodiment of the valve device will be described with reference to the drawings. In the drawings, part of the structure may be exaggerated or simplified for convenience of description. In addition, the dimensional ratios of the respective parts may be different from actual ones.

[0021] Such as figure 1 As shown, the heat exchanger 10 of the present embodiment is applied to a refrigeration cycle device D (heat pump cycle device) for air conditioning of electric vehicles (hybrid vehicles, EV vehicles, etc.). The vehicle air conditioner including the refrigeration cycle device D is configured to be switchable between a cooling mode in which air cooled by the evaporator 14 is blown into the vehicle interior and a heating mode in which air heated by the heater core 15 is blown into the vehicle interior. Further, the refrigerant cycle Da of the refrigeration cycle device D is configured to be switchable between a cycle corresponding to the cooling mode (r...

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Abstract

A valve device comprises a valve, a drive device, a magnetic joint, and a screw mechanism. The valve comprises a valve body and changes the flow mode of a refrigerant flowing within a circulation pathof a refrigeration cycle device. The drive device comprises an electric drive unit as a drive source. The magnetic joint comprises a drive-side rotating body and a driven-side rotating body that aremagnetically coupled to each other without being in contact, and the rotating motion of the electric drive unit is transmitted to the driven-side rotating body from the drive-side rotating body. A screw mechanism converts the rotating motion of the driven-side rotating body into THE linear motion in the axial direction of the valve body. The valve device is configured so that the flow mode of therefrigerant is changed by linear motion of the valve body obtained as a result of the driving force of the electric drive unit passing through the magnetic joint and the screw mechanism.

Description

[0001] Cross-references to related applications [0002] This application is based on Japanese application No. 2018-109448 filed on June 7, 2018, and the content described therein is incorporated herein. technical field [0003] The present invention relates to an electric valve device having an electric driving part. Background technique [0004] For example, Patent Document 1 discloses a valve device used for a flow control valve or the like of a refrigeration cycle device. This valve device includes a motor as an electric drive unit and a screw mechanism that converts the rotational motion of the rotor of the motor into a linear motion, and converts the linear motion into a forward and backward motion of the valve body. [0005] prior art literature [0006] patent documents [0007] Patent Document 1: Japanese Patent Laid-Open No. 2003-227576 [0008] However, in the case of using a screw mechanism as in Patent Document 1, since there is a gap (Japanese: がたつき) in the...

Claims

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Application Information

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IPC IPC(8): F25B41/20B60H1/32F16D7/02F16H49/00F16K31/04F16K31/08F16K31/53H02K49/10F16H25/20
CPCF16K31/08F25B41/20F16K27/02F16K31/50F16K31/045F25B41/31F25B2339/047F25B41/40F25B2600/2513F25B40/02F25B2400/0409F25B2400/23B60H1/32F16H25/20F16K31/04F16K31/53
Inventor 河田真治立石圣二大冢光井上博登锹田新伊藤哲也桥元慎二
Owner DENSO CORP
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