Outdoor unit control system, heat pump unit and control method thereof

A control system and heat exchange element technology, applied in the field of heat exchange, can solve the problems of frequent start and stop of heat pump units, large fluctuation of water supply water temperature, etc.

Active Publication Date: 2017-04-26
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an external unit control system, aiming to solve the problem of fr

Method used

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  • Outdoor unit control system, heat pump unit and control method thereof
  • Outdoor unit control system, heat pump unit and control method thereof
  • Outdoor unit control system, heat pump unit and control method thereof

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Embodiment Construction

[0073] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0074] The invention proposes an external machine control system, which is applied to a heat pump unit.

[0075] refer to figure 1 , figure 1 It is a structural schematic diagram of an embodiment of the external machine control system of the present invention.

[0076] In this embodiment, the external unit control system includes a refrigerant circuit 20 formed in series by a compressor 11, a heat exchange element 30, a throttling device 15, a condenser 13, and a separator 12. The throttling device 15 includes a main Road throttling element 151, at least one branch throttling element connected in parallel with the main road throttling element 151, the branch throttling element is connected with a solenoid valve in series;

[0077] The refrigerant circuit 20 is connected in parallel with a liquid injection pipeline ...

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PUM

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Abstract

The invention proposes an outdoor unit control system, a heat pump unit and a control method thereof. The outdoor unit control system comprises a refrigerant loop formed by serially connecting a compressor, a heat exchange element, a throttling device, a condenser and a separator; the throttling device includes a main throttling element, and at least one branch throttling element connected with the main throttling element in parallel; the branch throttling element is serially connected with an electromagnetic valve; the refrigerant loop is connected with a liquid spraying pipeline in parallel; an inlet end of the liquid spraying pipeline is arranged between the heat exchange element and the throttling device, and an outlet end is arranged between the condenser and the separator; and the liquid spraying pipeline is provided with a liquid spraying valve. The outdoor unit control system further comprises a controller; and the opening and the closing of the electromagnetic valve and the liquid spraying valve are controlled to adjust the flow and the temperature of a refrigerant entering the compressor to adjust the output capacity of an outdoor unit, so that the time of the water supply temperature reaching the highest set temperature is prolonged, the temperature reaching start and stop frequency of the outdoor unit is reduced, and the water supply temperature is stable.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to an external machine control system, a heat pump unit and a control method thereof. Background technique [0002] As people's awareness of quality of life continues to improve, more and more people will choose to use floor heating for heating in winter. For a fixed-speed air-cooled hot and cold water heat pump unit, when working under a small load (such as an outdoor ambient temperature of about 10°C), the outlet water temperature will soon reach the preset value, and the compressor will continue to start and stop, resulting in a decrease in the supply water temperature. The fluctuation is large, and the indoor temperature cannot reach a more comfortable temperature for a long time. [0003] In response to the above situation, there are currently two solutions: (1) use frequency conversion products instead of fixed speed products, and use frequency conversion control techno...

Claims

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Application Information

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IPC IPC(8): F25B30/02F25B41/04F25B41/06F25B49/02F25B41/20F25B41/30
CPCF25B30/02F25B49/02F25B2600/25F25B41/30F25B41/20
Inventor 马剑张光鹏
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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