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Parallel flow evaporator and anti-freezing method thereof

An anti-freezing and evaporator technology, which is applied in the direction of evaporator/condenser, refrigeration safety arrangement, refrigeration components, etc., can solve the problems of easy damage, etc., and achieve the effect of ensuring refrigeration effect, reducing frequent start-up, and intelligent anti-freezing

Inactive Publication Date: 2010-02-10
TCL CORPORATION
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  • Abstract
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  • Application Information

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Problems solved by technology

The electronic expansion valve in this device is always in a dynamic state, so it is relatively easy to damage

Method used

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  • Parallel flow evaporator and anti-freezing method thereof
  • Parallel flow evaporator and anti-freezing method thereof
  • Parallel flow evaporator and anti-freezing method thereof

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] In this embodiment, in order to make the parallel-flow evaporator meet the anti-freezing control method, it is necessary to improve the traditional parallel-flow evaporator. The improved parallel flow evaporator such as figure 1 As shown, the parallel flow evaporator 1 is provided with a temperature sensor 6 (i.e., the evaporator surface temperature sensor TA), and both ends are connected with an input main pipe 2 and an output main pipe 7, and an anti-freezing device is connected to its input main pipe 2 After the electromagnetic valve 5 and the capillary 4 of the anti-freezing device are connected in series, they are connected in parallel with the capillary 3, and then connected to the refrigeration circuit of the air conditioner. The refrigeration circuit also includes: a compressor, a four-way valve, an outdoor heat exchanger, a thr...

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Abstract

The invention discloses a parallel flow evaporator and an anti-freezing method thereof. The method comprises multistage anti-freezing programs. During normal refrigeration of an air conditioner, when the primary surface temperature TA of the indoor parallel flow evaporator is less than or equal to 0 DEG C, the primary anti-freezing program is started, an electromagnetic valve is opened, and the evaporation temperature of the parallel flow evaporator is raised to defrost the evaporator; after the opening time TN of the electromagnetic valve achieves a set time Tn, the surface temperature TA of the indoor parallel flow evaporator is detected again; when the TA is more than or equal to a set temperature Ta of the indoor parallel flow evaporator, the primary anti-freezing program is finished, and the electromagnetic valve is closed; and when the TA is less than 0 DEG C, a secondary anti-freezing program is started, and a compressor of the air conditioner is closed. The parallel flow evaporator has a simple and durable structure; and the anti-freezing method can implement anti-freezing of the parallel flow evaporator more intelligently and friendlily, reduce frequent starting of the compressor in a refrigeration loop, and ensure the refrigeration effect of the air conditioner.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a device and method for preventing an indoor parallel-flow evaporator from freezing during the cooling process. Background technique [0002] When the room air conditioner is cooling at low temperature, the evaporation temperature of the evaporator is relatively low, even lower than 0°C in many cases, but when the surface temperature of the evaporator is lower than 0°C, the water droplets generated on the surface of the evaporator will form frost . Frosting on the surface of the evaporator will affect the heat transfer effect on the one hand, and on the other hand, the heat transfer effect of the evaporator will be deteriorated due to frosting, so that the refrigerant cannot be completely evaporated into gas, so that some liquid refrigerant returns to the compressor , may lead to compressor liquid shock and damage the compressor. [0003] The current room air conditioners usuall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B39/02F25B49/02
Inventor 招伟
Owner TCL CORPORATION
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