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Air source heat pump defrosting control system and control method thereof

An air source heat pump and control system technology, applied in the direction of control input related to air characteristics, space heating and ventilation control input, space heating and ventilation, etc., can solve the problem of heat supply failure, environmental humidity influence, and obstruction of outdoor coils Problems such as gas flow in the room, to reduce costs and improve reliability

Pending Publication Date: 2022-02-25
苏州本色冷暖机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing technology has the following defects and deficiencies: However, the air source heat pump is greatly affected by the outdoor environment, and when it continues to operate at a low ambient temperature in winter to supply heat to the room, the outdoor coil will frost, causing the outdoor coil to transfer heat. Diminished performance and obstruction of gas flow between outdoor coils so that the system does not function properly
[0004] Existing equipment cannot continue to heat the room while defrosting, and cannot send hot air immediately after defrosting. Most of the equipment is affected by the humidity of the outside environment during defrosting.

Method used

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  • Air source heat pump defrosting control system and control method thereof
  • Air source heat pump defrosting control system and control method thereof

Examples

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Effect test

Embodiment 1

[0032] see figure 1 , an air source heat pump defrosting control system, including a compressor 1, an indoor heat exchanger 2, an outdoor heat exchanger 3, an outdoor dual sensor 4, an indoor fan 5, a two-way valve two 6, a two-way valve one 7, and an electronic Expansion valve 8, filter 9 and detector 10. Both the outdoor heat exchanger 3 and the outdoor dual sensor 4 are installed in an outdoor environment. The two ends of the detector 10 are connected to the compressor 1 and the outdoor heat exchanger 3 , and the compressor 1 and the outdoor heat exchanger 3 are separately connected to each other, and the periphery of the detector 10 is also connected to an outdoor double sensor 4 . The outdoor dual sensor 4 is provided with detection sensors for the outdoor ambient temperature and the surface temperature of the evaporator coil.

Embodiment 2

[0034] see figure 2 , an air source heat pump defrosting control method, including the initial steps:

[0035] Air conditioner heating operation: When the air conditioner is heating, the external machine will freeze and frost, so the air conditioner will stop blowing and enter the automatic defrosting state, and the panel light will keep flashing.

[0036] Including judging the air temperature and air humidity need defrosting:

[0037] Outdoor dual sensor activation: including the outdoor ambient temperature detection sensor and the outdoor evaporating coil surface temperature detection sensor:

[0038] Detect outdoor ambient temperature: detect whether the outdoor ambient temperature is below 0°C;

[0039] Detect the surface temperature of the outdoor evaporator coil: whether the surface temperature of the outdoor evaporator coil is lower than the dew point temperature of the ambient air, the surface temperature of the outdoor evaporator coil depends on the evaporation tem...

Embodiment 3

[0047] see Figure 1-2, an air source heat pump defrosting control system, including a compressor 1, an indoor heat exchanger 2, an outdoor heat exchanger 3, an outdoor dual sensor 4, an indoor fan 5, a two-way valve two 6, a two-way valve one 7, and an electronic Expansion valve 8, filter 9 and detector 10. Both the outdoor heat exchanger 3 and the outdoor dual sensor 4 are installed in an outdoor environment. The two ends of the detector 10 are connected to the compressor 1 and the outdoor heat exchanger 3 , and the compressor 1 and the outdoor heat exchanger 3 are separately connected to each other, and the periphery of the detector 10 is also connected to an outdoor double sensor 4 . The outdoor dual sensor 4 is provided with detection sensors for the outdoor ambient temperature and the surface temperature of the evaporator coil.

[0048] A defrosting control method for an air source heat pump, comprising the following steps:

[0049] Air conditioner heating operation: ...

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Abstract

The invention relates to the technical field of air source heat pump defrosting, and discloses an air source heat pump defrosting control system and a method thereof, and the air source heat pump defrosting control system comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, an outdoor double sensor, an indoor fan, a two-way valve II, a two-way valve I, an electronic expansion valve, a filter and a detector. According to the air source heat pump defrosting control system and the method, the effect of supplying heat to the indoor space while defrosting is achieved through the compressor, and the effect of immediately supplying hot air to the indoor space after defrosting is completed through the indoor heat exchanger; through the two-way valve II and the two-way valve I, high-temperature and high-pressure refrigerants discharged by the compressor flow into the outdoor heat exchanger to release heat to achieve the defrosting effect, through the outdoor double sensors, detection of outdoor parameters is avoided, influences of outdoor environment humidity are avoided, influences of the outdoor severe environment on an electric control device are avoided, and reliability is improved.

Description

technical field [0001] The invention relates to the technical field of air source heat pump defrosting, in particular to an air source heat pump defrosting control system and control method. Background technique [0002] In recent years, in order to reduce coal-burning pollution in winter and improve air quality, many cities in northern my country have begun to promote "coal-to-electricity", and a series of policy subsidies have also been released accordingly. Air source heat pump heating is one of the "coal to electricity" methods. During its operation, there is no local emission, and the emission reduction ratio is 100%. The end of the air source heat pump is easy to install and can be maintenance-free. In terms of economic benefits, emission reduction effects, and operation and maintenance, air source heat pump heating is the best solution for coal-fired replacement in northern rural areas. [0003] The existing technology has the following defects and deficiencies: Howe...

Claims

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Application Information

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IPC IPC(8): F24F11/42F24F11/64F25B30/06F25B41/20F25B41/34F25B47/00F25B49/02F24F110/10F24F110/20
CPCF24F11/42F24F11/64F25B30/06F25B41/20F25B41/34F25B47/00F25B49/02F24F2110/10F24F2110/20Y02B30/70
Inventor 李标汪佳佳杨兵
Owner 苏州本色冷暖机电设备有限公司