Defrosting control method, defrosting control device and heat pump type air conditioner

A control method and technology of a control device, which are applied in the field of electrical appliances, can solve problems such as frost-free defrosting, system heating performance attenuation, heating heat attenuation, etc., and achieve the effects of avoiding energy waste, ensuring work efficiency, and avoiding efficiency decline.

Active Publication Date: 2017-01-25
WUHU MATY AIR CONDITIONING EQUIP CO LTD +1
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Problems solved by technology

However, the lack of low-temperature heating capacity of heat pumps and multi-air conditioners is still a major problem plaguing the air-conditioning industry
[0003] The lack of low-temperature heating capacity of the air conditioner is mainly caused by two reasons. One is that the heating process of the air conditioner follows the reverse Carnot cycle. It is easy to frost after a period of heating

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  • Defrosting control method, defrosting control device and heat pump type air conditioner
  • Defrosting control method, defrosting control device and heat pump type air conditioner
  • Defrosting control method, defrosting control device and heat pump type air conditioner

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Embodiment Construction

[0041] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0042] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0043] figure 1 It shows the variation of the heating capacity with the heating time during the heating process of the air conditioner, where the derivative ΔQ / Δt at point ti reflects the rate of ch...

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Abstract

The invention provides a defrosting control method, a defrosting control device and a heat pump type air conditioner. The defrosting control method comprises steps as follows: the heat pump type air conditioner operates in a heating mode for first preset time ts and continuously operates for interval time delta t, and then the temperature of a heat exchanger outlet is detected and recorded as Ti; after the interval time delta t, the temperature of the heat exchanger outlet is detected again and recorded as T(i+1); if a value obtained according to [T(i+1)-Ti]/delta t is smaller than a first preset value A, 1 is added to the cumulative number f; if the cumulative number f is larger than or equal to the preset times N, the heat pump type air conditioner is controlled to defrost. According to the defrosting control method provided by the invention, appropriate time is selected for defrosting according to detection, recording and calculation of the changing speed of the heat exchanger outlet in a control process. Therefore, the work efficiency of the air conditioner system is guaranteed, and defects of energy waste and insufficient heating capacity caused by reduction of the air conditioner system efficiency due to frosting are overcome.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a defrosting control method, a defrosting control device and a heat pump air conditioner. Background technique [0002] In recent years, the popularity rate of heat pump one-to-multiple air conditioners has gradually increased, and the continuous development of air-conditioning technology has greatly improved various performance indicators of air-conditioners. However, the lack of low-temperature heating capacity of heat pumps and multi-air conditioners is still a major problem plaguing the air-conditioning industry. [0003] The lack of low-temperature heating capacity of the air conditioner is mainly caused by two reasons. One is that the heating process of the air conditioner follows the reverse Carnot cycle. It is easy to frost after a period of heating in an outdoor low-temperature environment, and the frost makes the heating performance of the system sharply The second...

Claims

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Application Information

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IPC IPC(8): F25B30/00F25B47/02F25B49/00
CPCF25B30/00F25B47/02F25B49/00F25B2347/02
Inventor 王正兴宋分平
Owner WUHU MATY AIR CONDITIONING EQUIP CO LTD
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