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Air-conditioning unit

A technology for air conditioning units and air conditioners, which is applied to refrigerators, refrigeration components, lighting and heating equipment, etc., can solve problems affecting the operation of air conditioning systems, compressor overload and burn loss, etc., to avoid overload burn loss, prevent blockage, and ensure safety. The effect of reliable cost

Inactive Publication Date: 2014-02-26
石家庄国祥运输设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the ambient temperature is higher than 45°C and the system pressure is high, the compressor will be overloaded and burned, affecting the normal operation of the air conditioning system

Method used

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  • Air-conditioning unit

Examples

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 The air-conditioning unit shown includes an air-conditioning casing, a compressor 1, a condenser 4, a condensing fan 5, an evaporator 6, and an evaporating fan 7, and the compressor 1, the condenser 4, the condensing fan 5, and the evaporator 6 and the evaporating fan 7 are fixed in the air conditioner casing, the compressor 1, the condenser 4, the evaporator 6 and the compressor 1 are connected in turn through a medium pipeline, and the medium pipeline between the condenser 4 and the evaporator 6 is provided with a capillary tube 10 , the low-pressure pressure switch 9 is arranged on the medium pipeline between the evaporator 6 and the compressor 1, and also includes a bypass pipeline 14, a bypass solenoid valve 11, a primary high-pressure pressure switch 2 for controlling the bypass solenoid valve 11 and / or ...

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Abstract

The invention discloses an air-conditioning unit, and relates to the technical field of air-conditioning equipment. The air-conditioning unit mainly comprises an air-conditioning housing, a compressor, a condenser, a condenser fan, an evaporator, an evaporator fan, a bypass pipeline, a bypass solenoid valve, a first-stage high-pressure switch and / or temperature control switch. The inlet of the bypass pipeline is communicated with an outlet medium pipeline of the compressor, the outlet of the bypass pipeline is communicated with the medium pipeline of the evaporator, the bypass solenoid valve is arranged on the bypass pipeline, and the first-stage high-pressure switch is arranged on the medium pipeline of the compressor outlet. When the environmental temperature is higher than 52 DEG C and the system pressure is larger than 2.9 MPa, the first-stage high-pressure switch switches off, and the bypass solenoid valve is opened or is controlled by the temperature control switch to open, part of refrigerant medium flows into the evaporator directly through the bypass pipeline so as to protect the compressor for normal operation. The air-conditioning unit has the advantages of simple structure and the air-conditioning unit is adaptable to high environmental temperature.

Description

technical field [0001] The invention relates to the technical field of air conditioning equipment. Background technique [0002] The function of the vehicle air conditioning system is to keep the temperature, relative humidity, air flow velocity and cleanliness (mainly referring to dust and carbon dioxide content) in the passenger room within the specified range, so as to create a comfortable driving environment for passengers. The evaporation cycle process of the refrigeration system in a general air-conditioning unit is as follows: [0003] 1. The compressor is compressed into a high-pressure and high-temperature medium gas. 2. The high-temperature gas flows through the air-cooled condenser, and is condensed into a liquid at room temperature and high pressure by forced cooling of the outside air. 3. The liquid medium flows through the capillary to reduce the pressure and become a low-temperature and low-pressure gas-liquid mixed medium. 4. The low-temperature gas flows ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D27/00F25B41/00F25B41/04F25B49/02F25B41/06F25B41/20F25B41/37F25B41/40
Inventor 何海振王国强
Owner 石家庄国祥运输设备有限公司
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