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Gas heat pump type air conditioner

An air conditioner, heat pump technology, applied in the directions of exhaust device, heat pump, heating method, etc., can solve problems such as hindering maintenance, hindering access to outdoor units, increasing costs, etc.

Inactive Publication Date: 2003-03-19
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the traditional GHP, since the outdoor unit is usually installed outdoors, there is a problem that access to the outdoor unit is hindered by snow around the outdoor unit in snowy areas, thereby hindering maintenance.
[0009] In addition, the outdoor unit is installed on the cement foundation with anchor bolts; however, if the height of the foundation is also taken into account that there may be a certain amount of snow on the foundation when the door is opened for maintenance, the height of the foundation should be higher than that of the snow-free area. The foundation is high, so there is a problem of increasing costs

Method used

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  • Gas heat pump type air conditioner
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  • Gas heat pump type air conditioner

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] Fig. 1 is a system diagram showing the general structure of an air heating system of a GHP according to a first embodiment of the present invention. The figure generally shows an indoor unit 1 and an outdoor unit 10 provided with compression means such as for driving a gas engine. In addition, one or more indoor units 1 and outdoor units 10 are connected by refrigerant pipes 2 in such a manner that the refrigerant can circulate.

[0035] The indoor unit 1 is provided with an indoor heat exchange device 1a, which is used as an evaporator during the cooling operation, and the evaporator evaporates a low-temperature and low-pressure liquid refrigerant to absorb heat in the indoor air (indoor atmosphere), and is When used as a condenser, the condenser liquefies high-temperature and high-pressure gaseous refrigerant to heat the indoor air. In addition, each indoor heat exchange device 1a is provided with a throttling mechanism 1b.

[0036] The interior of the outdoor unit ...

no. 2 example

[0078] In the snowy areas mentioned above, the air heating capacity is insufficient because the outdoor air temperature is usually low. In this state it can be expected that insufficient heat is provided to prevent snow from accumulating and to melt it.

[0079] As shown in FIG. 4, in the GHP of the second embodiment of the present invention, the exhaust gas heating device 55 for heating the exhaust gas discharged from the gas engine GE and increasing the heat energy collected in the exhaust gas heat exchange device 34 is arranged at This gas engine GE is connected to the gas system 50 of the exhaust gas heat exchange device 34 .

[0080] The exhaust system 50 is a system for releasing the exhaust gas of the gas engine GE into the atmosphere, and the exhaust system 50 is provided with a muffler 51 and an exhaust flue top 52 . The exhaust gas discharged from the gas engine GE flows through the exhaust gas heat exchange device 34 described above, and heats the engine cooling wa...

no. 3 example

[0099] Same as the above-mentioned second embodiment, this embodiment is also considered to be applied to snowy areas where the outdoor air temperature is low and the thermal energy for heating operation and melting snow is insufficient.

[0100] In the GHP of this embodiment, a heating device 40 is provided in order to heat the engine cooling water at an appropriate position in the engine cooling water system. The heating device 40 is arranged in the bypass line 36 formed by the branched engine cooling water system after the gas engine GE has cooled. In a branching portion of the bypass line 36, a flow control valve 37 serving as a path switching means is provided. In the example shown in the drawing, the bypass line 36 is connected upstream of the flow control valve 35A after the downstream separation of the gas engine GE. The deviation of the flow control valve 37 can be adjusted, and the total flow can also be made to flow into one pipeline, or divided according to a cert...

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Abstract

In order to provide a gas heat pump type air conditioning device in which accessibility and maintenance operation are not disturbed due to snow in snowy areas, a gas heat pump type air conditioning device comprises a compression device (11) for which the driving source is a gas engine and forms a refrigerating cycle by circulating a refrigerant, a bypass pipe channel section (80) which is provided around space where an outdoor unit is installed and is separated from an engine-coolant-water system (30) of the gas engine via a channel change switching device (81), wherein waste heat exhausted from the gas engine is collected back into the engine-coolant-water, and the refrigerant is heated by the engine-coolant-water so as to enhance air heating capacity.

Description

technical field [0001] The present invention relates to a gas heat pump type air conditioner in which a compression device for circulating a refrigerant is driven by a gas engine as a driving source, and more particularly relates to a gas heat pump that does not hinder the maintenance of an outdoor unit due to snow. Heat pump air conditioning unit. Background technique [0002] Air conditioning using heat pumps, such as cooling and heating air conditioning units, has a refrigerant circuit that includes, for example, an indoor heat exchanger, a compression device, an outdoor heat exchanger, and a throttling device. The cooling and heating of the room is realized by using the indoor heat exchanger to exchange heat between the indoor air and the outdoor air during the refrigerant cycle. In addition, in this refrigerant circuit, the absorption of heat during air heating depends not only on the outdoor heat exchanger but also on the refrigerant heating device for directly heatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F01N5/02F25B13/00F25B27/00F25B27/02F25B30/00F25B41/04
CPCF25B2327/00F25B27/00F01N5/02F25B13/00F25B2313/023F25B2313/0213Y02B30/52F25B2313/02523Y02B30/123Y02T10/16F25B2313/0253F25B41/04Y02T10/12F25B41/20F25B30/00
Inventor 笠木司国田拓山岸一夫
Owner MITSUBISHI HEAVY IND LTD
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