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A pressure control method and device in the start-up stage of an air conditioner

A technology of pressure control and stages, which is applied in the field of pressure control methods and devices in the start-up stage of air conditioners, can solve problems such as abnormalities in the air conditioner system, and achieve the effect of reducing the risk of pipe bursts

Active Publication Date: 2019-07-09
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a pressure control method and device in the start-up stage of an air conditioner, so as to reduce the risk of pipe burst and the abnormality of the air conditioner system caused by excessive pressure when the air conditioner is started in a high-temperature environment with high load heating

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  • A pressure control method and device in the start-up stage of an air conditioner
  • A pressure control method and device in the start-up stage of an air conditioner
  • A pressure control method and device in the start-up stage of an air conditioner

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Embodiment 1

[0024] figure 1 The flow chart of the pressure control method in the start-up stage of the air conditioner provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the air conditioner turns on the heating function when the external environment temperature is relatively high. The method can be executed by the air conditioner host, specifically including Follow the steps below:

[0025] Step 101. After the control system is turned on, the temperature of the internal machine tube is obtained in real time through the temperature sensing package;

[0026] Among them, the temperature sensing package collects the pipe temperature of the air conditioner in real time through the temperature sensor, and the collected temperature is sent to the control system through the A / D converter. The control system is typically a complete single-chip microcomputer system, the temperature sensor preferably uses a thermistor temperature sensor, and the ...

Embodiment 2

[0037] Figure 2a The flow chart of the pressure control method in the start-up stage of the air conditioner provided by Embodiment 2 of the present invention. On the basis of the above-mentioned embodiments, this embodiment preferably provides a specific method for determining the corresponding temperature threshold according to the current start-up time. Such as Figure 2a Shown specifically include:

[0038] Step 201, after the control system is turned on, it obtains the tube temperature of the internal unit in real time through the temperature sensing package.

[0039] Step 202, the control system determines corresponding temperature thresholds according to the current boot time, including at least two temperature thresholds that change with the boot time, and the at least two temperature thresholds are respectively set corresponding to different boot time periods;

[0040] Wherein, at least two temperature thresholds are respectively set corresponding to different power...

Embodiment 3

[0047] Figure 3a It is a flow chart of the pressure control method in the start-up stage of the air conditioner provided by Embodiment 3 of the present invention. On the basis of the above-mentioned embodiments, this embodiment preferably provides another specific method of determining the corresponding temperature threshold according to the current start-up time ,Such as Figure 3a Shown specifically include:

[0048] Step 301, after the control system is turned on, it obtains the tube temperature of the internal unit in real time through the temperature sensing package.

[0049] Step 302, the control system determines corresponding temperature thresholds according to the current boot time, including at least two temperature thresholds that change with the boot time, and the at least two temperature thresholds increase linearly with the prolongation of the boot time;

[0050] Wherein, at least two temperature thresholds increase linearly with the extension of the power-on ...

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Abstract

The invention discloses a method and device for controlling pressure in the starting-up stage of an air conditioner. The method comprises the steps that after a control system is started up, the inner unit pipe temperature is acquired in real time through a temperature wrap; the control system determines corresponding temperature threshold values according to the current starting-up time, wherein at least two temperature threshold values changing along with the starting-up time are included; and the control system compares the inner unit pipe temperature with the temperature threshold values in real time, so that the pressure is controlled by controlling starting and stopping of an outer fan. According to the scheme, the situations that when the air conditioner is started in a high-load heating manner in the high-temperature environment, pipe blasting risks exist, and an air conditioner system is abnormal due to the too high pressure are effectively reduced.

Description

technical field [0001] Embodiments of the present invention relate to automatic control technology, and in particular to a method and device for controlling pressure during the start-up stage of an air conditioner. Background technique [0002] The pressure during the use of the air conditioner mainly includes balance pressure, high pressure and low pressure. The three pressures are the pressures corresponding to the refrigerant circulating in different positions in the air conditioning pipeline. Among them, the balance pressure refers to the pressure when the compressor is not working and the high and low pressure are balanced; the high pressure refers to the discharge pressure or the condensation pressure; the low pressure refers to the suction pressure or the evaporation pressure. The three pressures are measured on the process port of the air valve of the outdoor unit. The air conditioner is at low pressure when it is cooling, it is high pressure when it is heating, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/30F24F11/64F24F11/70
CPCF24F11/30F24F11/62F24F11/63F24F11/70F24F2110/00
Inventor 赖孝成吴君
Owner GREE ELECTRIC APPLIANCES INC