JP2004093012A - Heat pump air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump air conditioning system capable of performing air conditioning by utilizing a ceiling chamber to save energy. <P>SOLUTION: A plurality of indoor air conditioning units A of heat pump type performing heat exchange of indoor air in a room E by air in a ceiling of the ceiling chamber F are provided. An air conditioning unit B for ceiling of heat pump type performing heat exchange of air in the ceiling by outside air is provided. The indoor air conditioning unit A is integrally provided with an indoor refrigerant circulation circuit capable of being taken out and stored freely for a casing 1, and the air conditioning unit B for ceiling is integrally provided with a refrigerant circulation circuit for ceiling capable of being taken out and stored freely for a casing 8. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat pump air conditioning system.
[0002]
[Prior art]
In recent years, when a building is highly insulated, heat is likely to be trapped indoors, and when there is a large amount of internal heat generated by OA equipment or the like, cooling is required even in winter.
[0003]
[Problems to be solved by the invention]
Therefore, there is a problem that extra running cost is required. Then, it aims at providing the heat pump air conditioning system which solves these problems.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plurality of indoor air conditioners of a heat pump type for exchanging indoor air in a room with air in the ceiling of a ceiling chamber, and exchanging heat in the ceiling with outside air. A heat pump type ceiling air conditioner was provided. In addition, a plurality of heat pump type indoor air conditioners for exchanging indoor air with the ceiling air of the ceiling chamber are provided, a part of the ceiling air is exhausted to the outside, and a part of the ceiling air is exhausted. And a heat pump type external conditioner for supplying heat to the ceiling chamber by heat exchange with outside air. Further, the air conditioner is configured to exhaust a part of the air in the ceiling and a part of the indoor air to the outside and to exchange heat with the air in the ceiling and a part of the indoor air to supply air to the ceiling chamber and the room. Configured. Further, the indoor air conditioner is configured to mix a part of the air in the ceiling with the indoor air for heat exchange. Furthermore, the indoor air conditioner is provided with an indoor refrigerant circulation circuit that can be taken out and stored in the casing, and the ceiling air conditioner is integrated with a ceiling refrigerant circuit that can be taken out and stored in the casing. Equipped. Furthermore, the indoor air conditioner is integrally provided with an indoor refrigerant circulation circuit that can be taken out and stored in the casing, and the outside air conditioner is integrally provided with an external refrigerant circulation circuit that can be taken out and stored in the casing. Was. Further, an indoor air conditioner in which one or both of the capacity and the air volume can be controlled is used. Furthermore, the fin tubes of the evaporator and the condenser of the indoor refrigerant circulation circuit and the ceiling refrigerant circulation circuit were configured by elliptic tubes. Further, the fin tubes of the evaporator and the condenser of the indoor refrigerant circulation circuit and the external conditioning refrigerant circulation circuit were configured by elliptic tubes.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show an embodiment of a heat pump air conditioning system according to the present invention. This heat pump air conditioning system is a heat pump type indoor heat exchanger that exchanges indoor air in a room E with air in a ceiling of a ceiling chamber F. A plurality of air conditioners A are provided, and a heat pump type ceiling air conditioner B for exchanging heat in the ceiling with outside air, and a part of the room air is exhausted to the outside and a part of the room air exchanges heat with the outside air. And a heat pump type indoor / outdoor air conditioner D for supplying air to the room E. Solid and dotted outline arrows indicate the wind direction.
[0006]
The indoor air conditioner A is integrally provided with an indoor refrigerant circuit 20 that can be taken out and stored in the casing 1, and the ceiling air conditioner B is installed in the ceiling refrigerant circuit that can be taken out and stored in the casing 8. The indoor / outdoor air conditioner D is integrally provided with an indoor / outdoor air conditioning refrigerant circulation circuit 23 that can be taken out and stored in a casing 29. For example, in the indoor air conditioner A, the frame 18 with the refrigerant circulation circuit is detachably connected as a suspended shape by an elastic damper provided inside the casing 1, and the refrigerant circulation circuit is attached to the bottom surface of the casing 1. An opening for vertically inserting and removing the attached frame 18 is formed, and this opening is covered with a detachable or openable / closable exterior plate, so that the frame 18 with the refrigerant circuit can be taken out and stored. In the ceiling air conditioner B, the refrigerant circulation circuit 21 is fixedly integrated with a frame 13 which is detachably mounted in the casing 8, and an opening is formed on one surface of the casing 8, and the refrigerant circulates through this opening. The frame with circuit 13 is constructed so as to be freely taken out and stored. The opening is provided with a detachable or openable / closable exterior plate. The indoor / outdoor air conditioner D is also configured such that the indoor / outdoor air conditioning refrigerant circulation circuit 23 is fixed to and integrated with the frame 33, and can be taken out and stored in the casing 29 in the same manner as the ceiling air conditioner B. It is to be noted that the refrigerant circulation circuits 20, 21, and 23 may be provided so as to be freely taken out and stored in a configuration other than the above.
[0007]
The refrigerant circulation circuit 20 of the indoor air conditioner A is configured by connecting piping such as an evaporator 2, a condenser 3, a compressor 4, a liquid receiver (not shown), an expansion valve, and a refrigerant circulation direction switching valve. The heat absorption and the heat radiation of the condenser 2 and the condenser 3 can be switched freely. The refrigerant circulation circuit 21 of the ceiling air conditioner B is formed by connecting piping such as an evaporator 5, a condenser 6, a compressor 7, a receiver (not shown), an expansion valve, and a refrigerant circulation direction switching valve. The heat absorption and the heat radiation of the condenser 5 and the condenser 6 can be switched. The refrigerant circulation circuit 23 of the indoor / outdoor air conditioner D is formed by connecting piping such as an evaporator 30, a condenser 31, a compressor 32, a receiver (not shown), an expansion valve, and a refrigerant circulation direction switching valve. The heat absorption and the heat radiation of the condenser 30 and the condenser 31 can be switched freely. The fin tubes 19 of the evaporators 2, 5, 30 and the condensers 3, 6, 31 are preferably formed of low pressure drop elliptical tubes (see FIG. 5), but may be circular tubes.
[0008]
The indoor air conditioner A includes an evaporating air passage 14 provided with a blower 11 and an evaporator 2 in a casing 1, and a condensed air passage 15 provided with a blower 12 and a condenser 3. An indoor inlet and an indoor outlet are connected to the air inlet and the air outlet of the evaporative air passage 14, respectively. The air inlet and the air outlet of the condensing air passage 15 are connected to the ceiling chamber F. The ceiling air conditioner B includes, within a casing 8, an evaporative air passage 16 provided with the blower 9 and the evaporator 5, and a condensed air passage 17 provided with the blower 10 and the condenser 6. The air inlet and the air outlet of the evaporative air passage 16 are connected to the ceiling chamber F, and the air inlet and the air outlet of the condensing air passage 17 are connected to the outside. The indoor / outdoor air conditioner D includes, in a casing 29, an evaporative air passage 36 provided with a blower 40 and an evaporator 30, and a condensed air passage 37 provided with a blower 41 and a condenser 31. The air outlet of the evaporative air passage 36 is connected to the room E, and the air inlet of the evaporative air passage 36 is connected to the outside. The air inlet of the condensing air passage 37 is connected to the room E, and the air outlet of the condensing air passage 37 is connected to the outside. The compressor 4 of the indoor air conditioner A is configured to be capable of controlling the capacity or the blowers 11 and 12 are configured to be capable of controlling the air volume, or both are configured to be controllable, so that one or both of the capacity and the air volume can be controlled. Air conditioner A.
[0009]
In the indoor air conditioner A, the indoor air taken into the evaporative air passage 14 is heat-exchanged with the refrigerant flowing through the evaporator 2 to circulate the air between the evaporative air passage 14 and the room E, and simultaneously taken into the condensing air passage 15. The refrigerant in the condenser 3 exchanges heat with the air in the ceiling to absorb or radiate heat, and the air is circulated between the condensing air passage 15 and the ceiling chamber F. In the ceiling air conditioner B, heat in the ceiling air taken into the evaporative air passage 16 is exchanged with the refrigerant flowing through the evaporator 5, and air is circulated between the evaporative air passage 16 and the ceiling chamber F. The refrigerant flowing through the condenser 6 exchanges heat with the outside air taken in to absorb heat or dissipate heat, and circulates air between the condensing air passage 17 and the outside. The indoor outdoor air conditioner D exchanges heat of the outside air taken into the evaporative air passage 36 with the refrigerant flowing through the evaporator 30 to supply the room E with air, and at the same time, uses the indoor air taken into the condensing air passage 37 to cool the condenser 31. The circulating refrigerant exchanges heat to absorb or radiate heat, and is exhausted outdoors. The indoor air conditioner A performs circulating air conditioning for each zone or circulating air conditioning for each room. The ceiling air conditioner B controls the air temperature of the ceiling chamber F. The indoor outdoor conditioner D ventilates the room E while recovering heat. The number of indoor air conditioners A can be freely increased or decreased.
[0010]
FIGS. 6 and 7 show another embodiment, in which the ceiling air conditioner B is replaced with an external air conditioner C in the above embodiment, and other configurations are the same. That is, a plurality of heat pump type indoor air conditioners A for exchanging the indoor air in the room E with the air in the ceiling of the ceiling chamber F are provided, a part of the air in the ceiling is exhausted to the outside, and the air in the ceiling is exhausted. A heat pump type external conditioner C for partially exchanging heat with the outside air and supplying air to the ceiling chamber F; a part of the room air is exhausted to the outside; And a heat pump type indoor / outdoor air conditioner D for supplying air to E. The external conditioner C is integrally provided with an external control refrigerant circulation circuit 22 that can be taken out and stored in the casing 24.
[0011]
The ceiling air conditioner C includes, inside the casing 24, an evaporative air passage 34 provided with a blower 38 and an evaporator 25, and a condensed air passage 35 provided with a blower 39 and a condenser 26. The air outlet of the evaporative air passage 34 is communicated with the ceiling chamber F, and the air inlet of the evaporative air passage 34 is communicated outdoors. The air inlet of the condensing air passage 35 is connected to the ceiling chamber F, and the air outlet of the condensing air passage 35 is connected to the outside. The refrigerant circulation circuit 22 of the external controller C is configured by connecting pipes to an evaporator 25, a condenser 26, a compressor 27, a liquid receiver (not shown), an expansion valve, a refrigerant circulation direction switching valve, and the like. In addition, the heat absorption and the heat radiation of the condenser 26 can be switched. The fin tubes 19 of the condenser 26 and the evaporator 25 are preferably formed of low pressure drop elliptical tubes (see FIG. 5), but may be circular tubes. In the same manner as the above-described ceiling air conditioner B, the external-conditioning refrigerant circulation circuit 22 is configured to be able to be taken out and stored in the casing 24. It is free to provide.
[0012]
In this case, the air conditioner C exchanges heat of the outside air taken in the evaporative air passage 34 with the refrigerant flowing through the evaporator 25 to supply the air to the ceiling chamber F, and at the same time condenses the air in the ceiling taken in the condensing air passage 35. The refrigerant flowing through the vessel 26 exchanges heat to absorb or radiate heat, and is exhausted outdoors. The ceiling air conditioner C performs only air temperature control and ventilation of the ceiling chamber F, or only ventilation of the ceiling chamber F. In addition, in the indoor air conditioner A, an external air inlet 42 communicating with the evaporative air passage 14 is provided as shown by a virtual line in FIG. A configuration may be used in which a part of the room E is mixed, and an exhaust fan or a ventilation fan may be provided in place of the indoor outdoor air conditioner D to ventilate the room E.
[0013]
FIG. 8 shows another embodiment. In the embodiment shown in FIG. 6, the indoor air conditioner D is omitted, and the air conditioner C is configured to exhaust a part of the air in the ceiling and a part of the indoor air to the outside, and It is configured to exchange heat with outside air by a part of the ceiling / room air to supply air to the ceiling chamber F and the room E, and the other configurations are the same. The air outlet of the evaporative air passage 34 of the external air conditioner C communicates with the ceiling chamber F and the room E, and the air inlet of the condensing air passage 35 communicates with the ceiling chamber F and the room E. In this case, the external conditioner C performs air temperature control and / or ventilation of the ceiling chamber F and ventilation of the room E.
[0014]
In each of the above embodiments, in addition to the present embodiment, as the indoor / outdoor air conditioner D, a device having a function of merely supplying fresh outside air to a room and exhausting room air, a ventilation unit, and the like are provided. Changes are free.
[0015]
【The invention's effect】
According to the first and second aspects of the present invention, heat is exhausted from the ceiling where heat is likely to accumulate, and the room is air-conditioned by the temperature-adjusted air inside the ceiling, thereby eliminating waste such as cooling in winter. In addition, at the start of the heating operation using the heat in the ceiling, the set temperature can be set earlier than when the indoor air is heat-exchanged with the outside air. When the supply / exhaust air temperature is different for each indoor air conditioner, the temperature of the air in the ceiling is leveled by mixing, and the load on the air conditioner and the external controller for adjusting the temperature in the ceiling can be reduced, thereby saving energy. Since it is a heat pump type, additional equipment such as a heat source unit is not required, and equipment cost can be reduced. The length of the air duct is short, and the cost of the air power can be reduced.
According to the second aspect of the present invention, it is also possible to adjust the temperature in the ceiling according to the outside air temperature only by ventilating the air in the ceiling without performing heat exchange, thereby achieving energy saving.
According to the third aspect of the present invention, an external air conditioner for the room is not required, and the temperature of the ceiling and the room can be controlled by ventilating the inside and the room with one external air conditioner, so that the equipment cost can be reduced. All air conditioning such as outside air processing, ventilation, cooling and heating can be performed by the indoor air conditioner and the outside air conditioner.
According to the fourth aspect of the present invention, an external air conditioner for the room becomes unnecessary, and the temperature can be controlled by ventilating the room only by providing a ventilation fan or the like for exhausting the room, thereby reducing the equipment cost.
According to the fifth and sixth aspects of the present invention, since the heat pump type air conditioner and the air conditioner are integrally provided with the refrigerant circulation circuit, the refrigerant piping work after the installation is unnecessary, the installation is simple, and the indoor installation is easy. Only the refrigerant circulation circuit is taken out of the casing without removing the entire casing, so that the refrigerant recovery operation and maintenance can be easily performed, and installation and storage are not troublesome. Further, by replacing only the refrigerant circuit, the cost can be reduced at the time of renewal.
According to the seventh aspect of the present invention, it is possible to cope with various systems such as zone air conditioning and individual air conditioning in which the supply air temperature differs for each indoor air conditioner, and there is no need for a ventilation duct or VAV, thereby facilitating construction.
According to the eighth and ninth aspects of the present invention, the pressure loss does not increase and the heat exchange capacity does not decrease even when used at a high wind speed, so that a small-sized evaporator and a condenser can be used, and the air conditioner and the air conditioner can be made compact. . At normal wind speeds, pressure loss is reduced and heat exchange efficiency is improved, so that a small blower can be used and noise can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention with a part thereof broken away.
FIG. 2 is a plan view of the indoor air conditioner.
FIG. 3 is a front sectional view of the ceiling air conditioner.
FIG. 4 is a front sectional view of the indoor outdoor air conditioner.
FIG. 5 is a sectional view of a fin tube.
FIG. 6 is a perspective view showing another embodiment with a part thereof broken away.
FIG. 7 is a front sectional view of the external controller.
FIG. 8 is a perspective view showing another embodiment with a part thereof broken away.
[Explanation of symbols]
2 evaporator 3 condenser 5 evaporator 6 condenser 19 fin tube 20 refrigerant circulation circuit 21 refrigerant circulation circuit 22 refrigerant circulation circuit 25 evaporator 26 condenser A indoor air conditioner B ceiling air conditioner C exterior air conditioner E indoor F Ceiling chamber

Claims (9)

A plurality of heat pump type indoor air conditioners A for exchanging heat of the indoor air in the room E with the air in the ceiling of the ceiling chamber F are provided. And a heat pump air conditioning system. A plurality of indoor air conditioners A of a heat pump type for exchanging the indoor air in the room E with the air in the ceiling of the ceiling chamber F are provided. A heat pump air conditioning system, comprising: a heat pump type external conditioner C that supplies heat to the ceiling chamber F by exchanging heat with outside air in a section. The air conditioner C exhausts a part of the air in the ceiling and a part of the indoor air to the outside and exchanges heat with the air in the ceiling and a part of the indoor air to supply the air to the ceiling chamber F and the room E. 3. The heat pump air conditioning system according to claim 2, wherein the heat pump air conditioning system is configured as follows. The heat pump air conditioning system according to claim 2, wherein the indoor air conditioner (A) is configured to mix a part of the ceiling air with the indoor air for heat exchange. The indoor air conditioner A is integrally provided with an indoor refrigerant circulation circuit 20 which can be taken out and stored in the casing 1, and the ceiling air conditioner B can be taken out and stored in the casing 8. The heat pump air-conditioning system according to claim 1, wherein the heat pump air-conditioning system is integrally provided. The indoor air conditioner A is integrally provided with an indoor refrigerant circulation circuit 20 that can be taken out and stored in the casing 1, and the air conditioner C has an external refrigerant circuit 22 that can be taken out and stored in the casing 24. The heat pump air-conditioning system according to claim 2, 3 or 4, wherein the heat pump air conditioning system is integrally provided. The heat pump air-conditioning system according to claim 1, 2, 3, 4, 5, or 6, wherein one or both of the capacity and the air volume can be controlled. The heat pump air-conditioning system according to claim 5, wherein the evaporators (2, 5) and the fin tubes (19) of the condensers (3, 6) of the indoor refrigerant circuit (20) and the ceiling refrigerant circuit (21) are elliptical tubes. The heat pump air-conditioning system according to claim 6, wherein the evaporators (2, 25) and the fin tubes (19) of the condensers (3, 26) of the indoor refrigerant circulation circuit (20) and the external conditioning refrigerant circulation circuit (22) are elliptical tubes.

Images