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Method and device for controlling low-temperature heating start of air conditioner and air conditioner

A low-temperature, air-conditioning technology, applied in the field of air-conditioning low-temperature heating start-up control methods, devices and air conditioners, can solve the problems of low oil discharge rate of heat exchanger compressors, difficulty in realizing rapid heating of air conditioners, and affecting system reliability, etc.

Active Publication Date: 2019-11-08
NINGBO AUX ELECTRIC
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Problems solved by technology

However, due to the low ambient temperature, it takes a long time for the heat exchanger to rise to a high temperature state; as the ambient temperature is lower, the refrigeration oil is more likely to dissolve in the refrigerant, and the oil discharge is larger, which affects the reliability of the system
When the existing air conditioner starts heating at low temperature, it is difficult to ensure that the heat exchanger rises to a high temperature state at a fast enough speed and the oil discharge rate of the compressor is low, so it is difficult to achieve rapid heating of the air conditioner

Method used

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  • Method and device for controlling low-temperature heating start of air conditioner and air conditioner
  • Method and device for controlling low-temperature heating start of air conditioner and air conditioner

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Embodiment Construction

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] It should be noted that the start-up control in this application is a process from when the compressor receives a start-up command to when the entire air-conditioning system is basically stable. The existing entire startup time is generally 0-30 minutes, but the startup time is too long for the rapid heating to be achieved by the present application.

[0053] The solution claimed in this application is applied to the control within 5 minutes after the air conditioner receives the start-up instruction. At this stage, because the time is short, many similar control methods in the prior art reduce the start-up time from 30 minutes to 5 minutes. are not applicable; and due to the compression of startup time, the instability ...

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Abstract

The invention provides a method and device for controlling low-temperature heating start of an air conditioner and the air conditioner. The method comprises the flowing steps: acquiring an ambient temperature; when the ambient temperature is less than a set temperature, sending a first start command to a fan of an outdoor unit to control the fan to start and run at the highest speed; after the third duration, sending a second start command to a compressor to control the compressor to start; after the fifth duration, turning on an electronic expansion valve of the outdoor unit. The method for controlling low-temperature heating start of the air conditioner can rapidly establish the system superheat degree under the premise of ensuring low oil discharge of the system, improve the heat exchange effect, enable the compressor to heat quickly, reduce the oil discharge amount, ensure the reliability of the system and realize rapid heating of the air conditioner during low-temperature heatingstart.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and in particular, to a low-temperature heating startup control method and device of an air conditioner, and an air conditioner. Background technique [0002] When the air conditioner starts heating in a low temperature environment, the heat exchanger must be raised to a high temperature state at a fast enough speed, and the oil discharge rate of the compressor must be low to achieve rapid heating. However, due to the low ambient temperature, it takes a long time for the heat exchanger to rise to a high temperature state; because the lower the ambient temperature, the easier the refrigerating oil is to dissolve in the refrigerant, and the oil discharge is larger, which affects the reliability of the system. When the existing air conditioner starts heating at a low temperature, it is difficult to simultaneously ensure that the heat exchanger rises to a high temperature state at a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/871F24F11/61F24F11/86F24F11/84F24F110/12
CPCF24F11/61F24F11/64F24F11/84F24F11/86F24F11/871F24F2110/12
Inventor 邓赛峰刘合心陈华宋磊
Owner NINGBO AUX ELECTRIC
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