JPS5826970A - Heat pump heating machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pump heater, and particularly to improving the heating feeling by accelerating the start of heating.

A conventional heat pump heater will be explained with reference to FIG. 1
is a compressor that sucks in low-pressure gas refrigerant and discharges high-pressure gas refrigerant into pipe 2. 6 is an indoor heat exchanger, μ tube 2
The latent heat of condensation of the high-pressure gas refrigerant flowing in is released to heat the room and become a high-pressure liquid refrigerant, which passes through a pressure reduction mechanism to become a low-temperature, low-pressure liquid refrigerant and absorbs the latent heat of vaporization from the outdoor air in the outdoor heat exchanger 5. Although the refrigerant becomes a low-pressure gas refrigerant and returns to the compressor 1 to heat the room, it has the disadvantage that it takes time for the refrigerant to reach a steady state and the rise time is slower than that of other heating devices.

An object of the present invention is to improve the start-up of heating by improving the refrigeration cycle in order to improve the above-mentioned drawbacks.

In other words, by adding an ejector, refrigerant heater, and heat storage tank to the refrigeration cycle of a conventional heat pump heater, you can start heating! In is something that speeds up.

An embodiment of the present invention will be described below with reference to FIG. Reference numeral 6 denotes an ejector, which is disposed midway between the indoor heat exchanger 6 and the discharge pipe 2 of the compressor 1, and the bleed pipe 7 connects the indoor heat exchanger 6 and the pressure reduction mechanism 4 via an endothermic exchanger 8. It is connected in the middle of the connecting pipe 9. 10 is a heating exchanger, which is formed as a part of the discharge pipe 2 of the compressor 1;
The heat exchanger 10 and the endothermic heat exchanger 8 are housed in a heat storage tank 12 covered with a heat insulator 11.

In the refrigeration cycle configured as described above, the heat storage tank 12 is heated in advance by the high-temperature, high-pressure gas refrigerant of the compressor 1 through the heat exchanger 10 and maintained at a high temperature, and then when heating operation is started, the high-pressure gas The refrigerant heats the room by releasing the latent heat of condensation in the indoor heat exchanger 6 and becomes a high-pressure gas refrigerant.It passes through the pressure reduction mechanism 4 and becomes a low-temperature, low-pressure liquid refrigerant.The outdoor heat exchanger 5 absorbs the latent heat of vaporization from the outdoor air. It becomes a low-pressure gas refrigerant and is sucked into the compressor 1, and at the same time, due to the suction action of the ejector 6, a part of the high-pressure liquid refrigerant absorbs heat from the heat storage 412 in the heat-absorbing exchanger 8, becomes a high-pressure gas refrigerant, and loses latent heat of condensation in the indoor heat exchanger 5. Therefore, in addition to the amount of heat absorbed by the outdoor heat exchanger 5 and the electric power of the compressor 1, the start-up heating capacity can be improved by the amount of heat absorbed by the heat exchanger 8 from the heat storage tank 12. In order to operate the ejector 2 more reliably, the ejector 2 may be placed between the compressor 1 and the heating exchanger 10.

As the heat storage agent used in the heat storage tank 12, a sensible heat storage agent may be used, or a latent heat storage agent may be used in order to reduce the size of the heat storage tank 12.

As described above, according to the present invention, the ejector 6 and the heating exchanger 10 are placed between the discharge distribution a2 of the compressor 1 and the indoor heat exchanger 6.
The bleed pipe 7 of the ejector 6 is connected to the middle of the pipe 9 that connects the indoor heat exchanger 3 and the pressure reduction mechanism 4 via the heat exchanger 8, and the heat exchanger 10 is connected to the heat storage tank 12. Since heat is stored and absorbed by the heat exchanger 8 at the start of heating, it is possible to provide a practical heat pump heater that can perform heating operation with a large heating capacity at the same time as the compressor 1 starts operating. .

Note that in the above description, the ejector 6 refers to a device that sucks and drives a secondary fluid using a secondary fluid, and is not limited to an ejector in a narrow sense.

[Brief explanation of drawings]

FIG. 1 is a refrigeration cycle configuration diagram of a conventional heat pump heater, and FIG. 2 is a refrigeration cycle configuration diagram of a heat pump heater equipped with an embodiment of the present invention. Note that the same symbols in the drawings indicate the same members, and the arrows indicate the flow direction of the refrigerant. DESCRIPTION OF SYMBOLS 1... Compressor, 6... Indoor heat exchanger, 4... Pressure reduction mechanism, 5... Outdoor heat exchanger, 6... Ejector,
8... Endothermic hot exchanger, 10... Hot hot exchanger, 11
...Insulation material, 12...Heat storage tank. ￥71 Kunime 2 reasons

Claims (1)

[Claims] 1. Discharge pipe (2) of compressor (1) and indoor heat exchanger (3)
] An ejector (6) and a heating exchanger (10) are arranged between the ejector (6) and the indoor heat exchanger (3) via an endothermic exchanger (8). Decompression mechanism (
4) in the middle of the pipe (9) connecting the heat storage tank (1).
2) the endothermic heat exchanger (8) and the heat heat exchanger (10);
A heat pump heating machine characterized by storing. 2. From the discharge pipe (2) of the compressor (1) to the heating exchanger (
10), the ejector (6), and the indoor heat exchanger (6) are connected in series in this order.
Heat pump heater described in section. 6. From the discharge pipe [2] of the compressor (1) to the ejector (6), hot exchanger (10), ejector (6),
The heat pump heater according to claim 1, wherein the indoor heat exchanger (3) is connected in series in this order. 4. The heat pump heater according to claim 1, characterized in that a sensible heat storage agent is used in the heat storage tank (12). 5. The heat pump heater according to claim 1, characterized in that a latent heat storage agent is used in the heat storage tank (12).