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Compressor high pressure difference starting control method, device and air conditioner

A technology of compressors and sub-compressors, applied in the field of compressors, can solve problems such as the need to open pressure balance valves, and achieve the effects of reducing production costs, improving user experience, and high-capacity output

Active Publication Date: 2020-04-28
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a compressor high-pressure difference start-up control method, device and air conditioner to at least solve the problem in the prior art that the pressure balance valve needs to be opened when the compressor of the multi-system type is started.

Method used

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  • Compressor high pressure difference starting control method, device and air conditioner
  • Compressor high pressure difference starting control method, device and air conditioner
  • Compressor high pressure difference starting control method, device and air conditioner

Examples

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Embodiment 1

[0023] In the preferred embodiment 1 of the present invention, a compressor start-up control method is provided. This control method can be directly applied to various multi-compressor systems. through the corresponding program. Specifically, figure 1 An alternative flowchart showing the method, such as figure 1 As shown, the method includes the following steps S102-S104:

[0024] S102: When the compressor is in the open-loop control mode, start the compressor according to the preset initial condition;

[0025] S104: Detect whether the compressor is started successfully, if so, control the compressor to switch to the closed-loop control mode to run.

[0026] In the present invention, both open-loop control and closed-loop control belong to the operating modes used by the compressor. Closed-loop (closed-loop structure) is also called feedback control system, which compares the measured value of the system output with the desired given value, thereby generating a deviation s...

Embodiment 2

[0037]Based on the compressor start-up control method provided in the above-mentioned embodiment 1, a compressor start-up control device is also provided in preferred embodiment 2 of the present invention, specifically, image 3 shows an optional structural block diagram of the device, such as image 3 As shown, the device includes:

[0038] An open-loop control module 302, configured to start the compressor according to preset initial conditions when the compressor is in an open-loop control mode;

[0039] The closed-loop control module 304 is connected with the open-loop control module 302, and is used to detect whether the compressor starts successfully, and if so, controls the compressor to switch to the closed-loop control mode to run.

[0040] In the above embodiment, a compressor high pressure difference startup control device is provided. By starting the compressor according to the preset initial conditions, the compressor operates in an open-loop control mode, and th...

Embodiment 3

[0049] Based on the compressor start-up control method provided in the above-mentioned embodiment 1, a compressor system is also provided in the preferred embodiment 3 of the present invention, including a main compressor and a sub-compressor, and the sub-compressor adopts the above-mentioned compressor Start the control method.

[0050] In the above embodiment, a method for starting and controlling the high pressure difference of the compressor is provided. First, start the compressor according to the preset initial conditions. At this time, the compressor operates according to the open-loop control mode, and then check whether the compressor is started successfully. If so, Then control the compressor to switch to the closed-loop control mode to run. Through the above start-up method, it is possible to realize fast and smooth start-up without opening the gas bypass of the unit, which solves the problem in the prior art that the compressor of the multi-system type needs to ope...

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Abstract

The invention discloses a compressor high-pressure differential starting control method and device and an air conditioner. The method comprises the following steps that when the compressor is in an open-loop control mode, starting the compressor according to a preset initial condition; detecting whether the compressor is successfully started or not, and if so, controlling the compressor to be switched to a closed-loop control mode to operate. According to the invention, the problem that a pressure balance valve needs to be opened when a compressor of a multi-system type is started in the priorart is solved, and the problem of fast and stable starting can be realized under the condition that the unit is not open gas and bypass.

Description

technical field [0001] The present invention relates to the technical field of compressors, in particular to a method and device for controlling high-pressure differential start-up of a compressor, and an air conditioner. Background technique [0002] With the increasingly fierce market competition, the current commercial air-conditioning multi-split models tend to develop in the direction of high-power and multi-system. In the prior art, for multi-system models, that is, dual compressors, triple compressors and other models, in order to meet the needs of high energy efficiency operation under various load conditions, the start-up sequence of different compressors in the unit is different, and When the main compressor has been turned on and has been running stably, a certain pressure has been established in the system. If another compressor is turned on at this time due to capacity requirements, it is equivalent to starting with load for the compressor that starts later. Ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F04B49/02
CPCF04B49/02F25B49/022F25B2400/077F25B2600/0251
Inventor 杨湘木贺小林王会
Owner GREE ELECTRIC APPLIANCES INC
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