JPH04117335U - Air-cooled heat pump outdoor unit - Google Patents

Abstract

(57) [Summary] [Purpose] To change the capacity of the outdoor heat exchanger 1 both broadly and minutely. [Configuration] The refrigerant flow path of the outdoor heat exchanger 1 is divided into a plurality of circuits 1A and 1B, the number of circuits 1A and 1B into which the refrigerant flows, and the fan for causing outside air to flow through the outdoor heat exchanger 1.
Controls the air volume of 2A and 2B together.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an outdoor unit of an air-cooled heat pump.

0002

[Conventional technology]

The outdoor unit of an air-cooled heat pump is an outdoor heat exchanger that exchanges heat between outside air and refrigerant. 01 and a fan 02 for causing outside air to flow through the outdoor heat exchanger 01. So Then tap motor 03 to drive fan 02 according to the load of heat exchanger 01. Switch to Hi, Me, or Lo to set the air flow rate through outdoor heat exchanger 01 in three stages. By changing the heat exchange capacity of outdoor heat exchanger 01, the heat exchange capacity of outdoor heat exchanger 01 was adjusted.

0003

[Problem that the idea aims to solve]

In the above conventional outdoor unit, by changing the rotation speed of fan 02, Since the amount of air flowing through outdoor heat exchanger 01 is changed, the capacity of outdoor heat exchanger 01 is Not only can it not be finely adjusted, but its ability can also be adjusted to a large extent in response to changes in environmental conditions. Since it cannot be changed, there is a range where air-cooled heat pumps cannot be operated. There was a problem.

0004

[Means to solve the problem]

This invention was proposed to solve the above problems, and its gist is as follows: However, there is an outdoor heat exchanger for exchanging heat between outside air and refrigerant, and this outdoor heat exchanger. The outdoor unit of an air-cooled heat pump is equipped with a fan that allows outside air to flow through the container. The refrigerant flow path of the outdoor heat exchanger is divided into multiple circuits, and the refrigerant is A means for increasing or decreasing the number of flowing circuits and a means for increasing or decreasing the amount of air blown by the fan. An air-cooled heat exchanger characterized by being provided with means for controlling according to the load of the outdoor heat exchanger. It is in the outdoor unit of the water pump.

[0005]

[Effect] In this invention, since it has the above configuration, it can be adjusted according to the load of the outdoor heat exchanger. Outdoor heat exchange by controlling the number of circuits through which the refrigerant flows and the air flow rate of the fan. It is possible to greatly change the converter's capacity, and also to make fine-grained changes.

[0006]

【Example】

One embodiment of the invention is shown in FIG. The outdoor heat exchanger 1 has multiple refrigerant flow paths (in the figure, there are It is divided into two circuits 1A and 1B. Injecting refrigerant into each circuit 1A and 1B Electromagnetic on-off valves 4A and 4B are installed in each mouth, and the electromagnetic on-off valves 4A and 4B are opened and closed. The heat transfer area of the outdoor heat exchanger 1 can be increased by adjusting the number of circuits through which the refrigerant flows. It can be changed in three ways: 100%, 50%, and 0%.

[0007] Two fans 2A and 2B are installed to flow outside air through outdoor heat exchanger 1. Ru. Fan 2A is driven by motor 3A, which has three taps Hi, Me , Lo, and fan 2A by switching the tap to Hi, Me, or Lo. can be rotated at high, medium, or low speeds. centre Fan 2B is driven by motor 3B, which has only one tap Hi. , fan 2B can be rotated at high speed. However, Mo By switching the taps of taps 3A and 3B, the amount of air flowing through the outdoor heat exchanger 1 can be reduced by 7. You can change it accordingly.

[0008] Sensor 6 that detects the pressure of refrigerant gas sucked into the compressor, refrigerant in the evaporator The outputs of the sensor 7, etc. that detect the evaporation pressure of the Based on the force, the controller 5 calculates the load on the outdoor heat exchanger 1 and responds to this load. Outputs a command to the solenoid on-off valves 4A, 4B and motors 3A, 3B to open the solenoid on-off valves 4A, 4B. Close and switch the taps of motors 3A and 3B. Thus, the flow of refrigerant is - Outdoor heat exchanger 1 by increasing or decreasing the number of kits and at the same time increasing or decreasing the air flow rate. It is possible to change the ability of the character in 13 ways.

[0009]

[Effect of the idea]

In this invention, the number of circuits through which refrigerant flows according to the load of the outdoor heat exchanger The capacity of the outdoor heat exchanger can be greatly changed by controlling the amount of air blown by the fan. , and can be changed finely. As a result, the operating range of the air-cooled heat pump can be expanded, and the air-cooled heat pump You can finely adjust the ability of the tap.

[Brief explanation of drawings]

FIG. 1 is a schematic system diagram showing one embodiment of the present invention.

FIG. 2 is a layout diagram of a conventional outdoor unit.

[Explanation of symbols]

1 Outdoor heat exchanger 1A circuit 1B circuit 2A fan 2B fan 3A Means for increasing/decreasing air flow rate 3B Means for increasing/decreasing air flow rate 4A Means for adjusting the number of circuits 4B Means for adjusting the number of circuits 5 Control means

Claims (1)

[Scope of utility model registration request] Claim 1. An outdoor unit of an air-cooled heat pump comprising an outdoor heat exchanger for exchanging heat between outside air and a refrigerant, and a fan for causing outside air to flow through the outdoor heat exchanger, wherein the outdoor heat exchanger means for dividing the refrigerant flow path of the refrigerant into a plurality of circuits and controlling the number of circuits through which the refrigerant flows and means for increasing or decreasing the air flow rate of the fan according to the load of the outdoor heat exchanger. An outdoor unit of an air-cooled heat pump that is characterized by: