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A method for evaluating the operating range of compressors

A technology of operating range and compressor, which is applied in the field of compressors, can solve problems such as the inability to evaluate the operating range, and achieve the effects of shortening the selection cycle, improving development efficiency, and reducing risks

Active Publication Date: 2018-10-26
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the embodiment of the present invention, a method for evaluating the operating range of a compressor is provided to solve the problem in the prior art that it is impossible to evaluate the operating range before making a prototype

Method used

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  • A method for evaluating the operating range of compressors
  • A method for evaluating the operating range of compressors

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Embodiment 1

[0015] figure 1 is a flowchart of a method for evaluating the operating range of a compressor according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps (step S101-step S104):

[0016] Step S101, setting the working condition load, and calculating the rotational speed of the compressor; wherein, the working condition load in this embodiment includes at least one of the following: the evaporating temperature, the condensing temperature, and the suction temperature of the compressor;

[0017] Specifically, this step can be realized through the following preferred procedure: acquiring the discharge temperature of the compressor and the motor torque; calculating the rotational speed of the compressor according to the motor torque. Thereby providing a basis for subsequent judgment based on the rotation speed whether the compressor is beyond the preset normal operation range.

[0018] Step S102, judging whether the compr...

Embodiment 2

[0025] figure 2 is a flowchart of a compressor evaluation method according to an embodiment of the present invention, such as figure 2 As shown, the method includes the following steps (step S201-step S213):

[0026] Step S201, setting the working condition load. The working condition load includes at least one of the following: evaporating temperature, condensing temperature, and suction temperature of the compressor.

[0027] Step S202, acquiring the discharge temperature of the compressor.

[0028] Step S203, acquiring the motor torque of the compressor.

[0029] Specifically, according to the principle of refrigeration and the pressure-enthalpy diagram, after the evaporation temperature, condensation temperature, and suction temperature of the compressor are determined, the discharge temperature of the compressor can be obtained from the characteristics of the refrigerant, and the required motor torque.

[0030] In this embodiment, the execution order of step S202 a...

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Abstract

The invention discloses an assessment method and device for the operation range of a compressor. The assessment method includes the steps that firstly, the work condition load is set, and the rotation speed of the compressor is calculated; secondly, whether the compressor exceeds a preset normal operation range or not is judged according to the rotation speed, if yes, the work condition load is lowered, and if not, the work condition load is increased; thirdly, the first step and the second step are repeated until all work condition loads are traversed; and fourthly, the operation range of the compressor is assessed based on the traversing result. Through the assessment method and device for the operation range of the compressor, the operation range of the compressor can be fully assessed before the compressor is manufactured, prioritizing installation is conducted, the problem that the operation range can not be assessed before a model machine is manufactured in the prior art is solved, the risk of manufacturing the model machine repeatedly is lowered, the selection period of development schemes is shortened, the development efficiency is improved, and the manufacturing cost of the model machine is reduced.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a method for evaluating the operating range of a compressor. Background technique [0002] In related technologies, the designed operating range of the compressor is related to the application field of the compressor. For example, heat pump water heaters require the compressor to operate at a relatively high temperature, and low-temperature refrigeration equipment require the compressor to operate at a relatively low temperature. The current operating range design plan is to manufacture the compressor based on design experience, and then confirm the operating range of the compressor through actual measurement, and there are cases where the design plan does not meet the requirements. [0003] Aiming at the problem in the prior art that it is impossible to evaluate the operating range before making a prototype, no effective solution has been proposed so far. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 林婵琼范少稳袁亮贵
Owner GREE ELECTRIC APPLIANCES INC
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