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Wind-cooling type heat pump air conditioner and control method thereof

A control method, air-cooled technology, applied in the heating system and control field of air-cooled heat pump air conditioners, can solve the problems affecting the heating effect, shorten the defrosting time, improve the comprehensive heating capacity and energy efficiency ratio, The effect of extending the defrost cycle

Inactive Publication Date: 2007-11-28
四川长虹空调有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the thickness of the frost layer increases, the heat exchange rate gradually decreases, which will seriously affect the heating effect

Method used

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  • Wind-cooling type heat pump air conditioner and control method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0021] The basic structure of the air-cooled heat pump air conditioner in this example is shown in Figure 1. The most significant difference from the prior art is that two sets of electric heating elements are arranged in the gas-liquid separator. According to the coil temperature detected by the coil temperature sensor, the two sets of electric heaters are controlled to be turned on and off.

[0022] Table 1 is the test data control parameters of a certain type of air-cooled heat pump air conditioner. In the gas-liquid separator of the system, two sets of electric heating elements with different powers are arranged. During the experiment, the control law is summarized as follows:

[0023] condition

first heating element

second heating element

system

hot

model

Mode

T disk ≥ T1

closure

closure

T1>T plate≥T2 and T ring>T5

Open

closure

T1>T plate≥T2 and T5≥T ring

closure

Open

...

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Abstract

The invention relates to an air conditioner, especially the air-cooled heat pump air conditioner heating system and the control method. Aiming at the shortage that outdoor coil pipe of air-cooled heat pump air conditioner is frosted easily so as to influence heating efficiency the invention discloses an air conditioner with inner-placed heating device. In heating mode, air-liquid separator is heated so as to prolong defrosting period, shorten defrosting time and improve heating efficiency of heat pump air conditioner. The air-cooled heat pump air conditioner comprises air-liquid separator. It is characterized in that it also comprises electric heating device, which is used to heat said air-liquid separator. The invention also provides the operating control method for the air conditioner. In the invention, defrosting period is prolonged; defrosting time is shortened; and synthesis heating quantity and energy efficiency ratio of heat pump air conditioner are improved.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a heating system of an air-cooled heat pump air conditioner and a control method thereof. Background technique [0002] During the low-temperature heating operation of the air-cooled heat pump air conditioner, as the temperature of the outdoor coil (heat exchanger) decreases, water vapor will frost on the surface of the coil and fins. As the thickness of the frost layer increases, the heat exchange rate gradually decreases, which will seriously affect the heating effect. In a high-humidity and low-temperature environment (0°C<T ring<6°C, RH>60%; T ring is the ambient temperature, and RH is the relative humidity.) environment, the temperature of the outdoor coil of the air conditioner can easily drop below zero, and the water in the air The vapor condenses on the coil surface, forming a frost layer. The frost layer increases the heat transfer resistance between the air and the refr...

Claims

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Application Information

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IPC IPC(8): F25B43/00F25B47/00
Inventor 徐强熊志洪
Owner 四川长虹空调有限公司
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