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Air-conditioner, external unit, defrosting device, and defrosting control method and system

A technology of air-conditioning external unit and control method, which is applied in the direction of mechanical equipment, etc., can solve the problems affecting the comfort of the room and the drop of room temperature, so as to improve the efficiency of heating and defrosting, the effect is direct, and the indoor temperature can be avoided Effect

Active Publication Date: 2019-12-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional defrosting method has many disadvantages: the indoor evaporator absorbs the heat of the room during defrosting, which affects the comfort of the room; The temperature of the heat exchanger dropped rapidly below -20°C, and a large amount of low-temperature liquid refrigerant accumulated in the indoor heat exchanger, absorbing a large amount of heat from the indoor unit through natural convection, causing the room temperature to drop
Especially in the cold winter, the defrosting time of the outdoor unit is long, and the heat dissipation of the room through the wall is relatively severe, and the indoor temperature fluctuation will be greater; according to the comfort simulation experiment, the room temperature can drop by 8-10°C at the most, which seriously affects the room temperature. comfort

Method used

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  • Air-conditioner, external unit, defrosting device, and defrosting control method and system
  • Air-conditioner, external unit, defrosting device, and defrosting control method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Such as figure 1 As shown, the present invention provides a defrosting device for an external unit of an air conditioner, which includes an air duct 1, a heating element 4 disposed in the air duct 1 and a driving element 3 disposed in the air duct 1; The channel 1 is provided with an air inlet 5 and an air outlet 6, and the driving member 3 can drive the air flow from the air inlet 5 to the air outlet 6; the heating member 4 can heat the air flow in the air channel 1, and the air channel 1 The air outlet 6 faces the heat exchange tube 7 of the air conditioner external unit.

[0049] By setting an independent air duct 1, a flow path can be provided for the defrosting air flow, and the air duct 1 is provided with a heating element 4 for heating the air flow and a driving element 3 for driving the air flow. Under the joint action of the driving element 3 and the heating element 4, There will be a steady stream of defrosting hot air blowing from the air outlet 6 of the air...

Embodiment 2

[0057] Such as figure 2 As shown, based on the same inventive concept, the present invention also provides a defrosting control method for an air conditioner external unit, the control method comprising the following steps: S1: Obtain the measured ambient temperature and the measured heat exchange tube temperature; S2: Determine the Whether the measured ambient temperature and the measured heat exchange tube temperature meet the parameter conditions of any starting group at the same time, and if so, generate a defrosting command corresponding to the starting group; S3: execute the defrosting command.

[0058] By comparing the measured ambient temperature and the measured heat exchange tube temperature with the parameter conditions in each start-up group, it is determined whether there is a start-up group that can contain the above two temperatures at the same time. In some cases, defrosting needs to be carried out, and the defrosting must be targeted. It is necessary to deter...

Embodiment 3

[0073] Based on the same inventive concept, the present invention also provides a defrosting control system for an air conditioner external unit, including: an acquisition module, which is used to obtain the measured ambient temperature and the measured heat exchange tube temperature; a judgment module, which uses To determine whether the measured ambient temperature and the measured heat exchange tube temperature meet the parameter conditions of any start-up group at the same time, if so, generate a defrosting command corresponding to the start-up group; an execution module, the execution module is used to execute the defrost command.

[0074] In some embodiments of the present invention, it also includes: a storage module, the storage module is used to store a combination of multiple startup groups and startup commands, each startup group includes a first range and a second range, each The starting commands all include the stable temperature requirements of the defrosting ai...

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Abstract

The invention relates to an air-conditioner, an air-conditioner external unit, an air-conditioner external unit defrosting device, and an air-conditioner external unit defrosting control method and system. The air-conditioner external unit defrosting device comprises an air passage, a heating piece arranged in the air passage and a driving piece arranged in the air passage; the air passage is provided with an air inlet and an air outlet, and the driving piece can drive airflow to flow to the air outlet from the air inlet; the heating piece can heat the airflow in the heating air channel, and the air outlet of the air channel faces a heat exchange pipe of the air-conditioner external unit. Normal running and the heat exchange effect of an external heat exchanger are guaranteed, and then theheating effect of the whole air-conditioner is guaranteed; the effect of the defrosting device is more direct, and the defrosting effect and efficiency are better; moreover, the operation of switching of the flow direction of a heat exchange agent in an air-conditioning system for defrosting is avoided, thus an evaporator is prevented from absorbing indoor heat, decrease of the indoor temperatureis avoided, the stability and comfort of the indoor temperature are improved, defrosting and heating can be conducted simultaneously, and the heating efficiency and defrosting efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to an air conditioner, an air conditioner external unit, an air conditioner external unit defrosting device, and an air conditioner external unit defrosting control method and system. Background technique [0002] During the operation of the heat pump air conditioner in the cold season, the temperature of the outdoor side heat exchanger is lower than the ambient temperature. If the outdoor ambient temperature is lower than 7°C, the surface temperature of the outdoor heat exchanger may be lower than 0°C. If the humidity of the outdoor environment is high enough at the same time, it will cause frost or even ice on the outdoor heat exchanger, which will seriously hinder the heat exchange of the outdoor heat exchanger and cause the heating performance of the heat pump air-conditioning device to decline rapidly and greatly. Significantly affect the heating effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42
CPCF24F11/42
Inventor 钟振棠杨翠霞梁章平孙子超高玉平罗永宏
Owner GREE ELECTRIC APPLIANCES INC
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