JP3709862B2 - Heat pump air conditioning system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat pump air conditioning system.
[0002]
[Prior art]
In recent years, heat is easily trapped indoors due to high heat insulation of buildings, and cooling is necessary even in winter when there is a lot of internal heat generated by OA equipment.
[0003]
[Problems to be solved by the invention]
Therefore, there is a problem that the running cost is extra. 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 heat pump type indoor air conditioners for exchanging the indoor air with the air in the ceiling of the ceiling chamber, and heat-exchanges the air in the ceiling with the outside air. A heat pump ceiling air conditioner was installed. In addition, a plurality of heat pump type indoor air conditioners that exchange the indoor room air with the ceiling air of the ceiling chamber are provided, and a part of the air in the ceiling is exhausted to the outside and part of the air in the ceiling A heat pump-type external air conditioner that heat-exchanges outside air and supplies air to the ceiling chamber is provided. Further, the external air conditioner exhausts a part of the ceiling air and a part of the room air to the outside, and heats the outside air by a part of the ceiling and room 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 ceiling air with the indoor air for heat exchange. Furthermore, the indoor air conditioner has an indoor refrigerant circulation circuit that can be taken out and stored in the casing, and the ceiling air conditioner has an integrated ceiling refrigerant circulation circuit that can be taken out and stored in the casing. Prepared. 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 external air conditioner is provided with an external adjustment refrigerant circulation circuit that can be taken out and stored in the casing. It was. Furthermore, it was set as the indoor air conditioner which can control one or both of a capacity | capacitance and an air volume. Furthermore, the fin tubes of the evaporator and the condenser of each of the indoor refrigerant circulation circuit and the ceiling refrigerant circulation circuit are configured by elliptic tubes. Furthermore, the fin tubes of the evaporator and the condenser of the indoor refrigerant circulation circuit and the external refrigerant circulation circuit are configured by elliptic tubes.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment of a heat pump air-conditioning system of the present invention. This heat pump air-conditioning system is for heat pump indoors in which the indoor air in the room E is exchanged with the air in the ceiling of the ceiling chamber F. A plurality of air conditioners A are installed, heat pump type ceiling air conditioner B that exchanges heat in the ceiling air with the outside air, and a part of the room air is exhausted to the outside and the outside air is heat exchanged with a part of the room air Then, a heat pump type indoor air conditioner D for supplying air to the room E is provided. Solid and dotted white arrows indicate the wind direction.
[0006]
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 ceiling air conditioner B is a ceiling refrigerant circulation circuit that can be taken out and stored in the casing 8. The indoor outdoor conditioner D is integrally provided with an indoor / outdoor refrigerant circulation circuit 23 that can be taken out and stored in the casing 29. For example, in the indoor air conditioner A, a frame 18 with a refrigerant circulation circuit is detachably connected as a suspended shape with an elastic damper provided inside the casing 1, and the refrigerant circulation circuit is connected to the bottom surface of the casing 1. An opening for inserting and removing the attached frame 18 is formed, and this opening is covered with a removable or openable / closable exterior plate so that the frame 18 with the refrigerant circulation circuit can be taken out and stored. In the ceiling air conditioner B, the refrigerant circulation circuit 21 is fixed and integrated with the frame 13 that is detachably mounted in the casing 8, and an opening is formed on one surface of the casing 8. The circuit-equipped frame 13 can be taken out and stored. An exterior plate that can be freely attached or detached is provided in the opening. 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 should be noted that the refrigerant circulation circuits 20, 21, and 23 can be taken out and stored in a configuration other than that described above.
[0007]
The refrigerant circulation circuit 20 of the indoor air conditioner A includes an evaporator 2, a condenser 3, a compressor 4, a liquid receiver (not shown), an expansion valve, a switching valve for the refrigerant circulation direction, and the like connected by piping. 2 and the heat absorption and heat dissipation of the condenser 3 are configured to be switchable. The refrigerant circulation circuit 21 of the ceiling external air conditioner B is configured by connecting an evaporator 5, a condenser 6, a compressor 7, a liquid receiver (not shown), an expansion valve, a switching valve for the refrigerant circulation direction, and the like by piping. The heat absorption and heat dissipation of the condenser 5 and the condenser 6 are configured to be switchable. The refrigerant circulation circuit 23 of the indoor external air conditioner D is configured by connecting an evaporator 30, a condenser 31, a compressor 32, a liquid receiver (not shown), an expansion valve, a switching valve for the refrigerant circulation direction, and the like by piping. The heat absorption and heat dissipation of the condenser 30 and the condenser 31 are configured to be switchable. The fin tubes 19 of the evaporators 2, 5, 30 and the condensers 3, 6, 31 are preferably composed of elliptical tubes with low pressure loss (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 and a condensing air passage 15 provided with an air blower 12 and a condenser 3 in the casing 1. An indoor inlet and an indoor outlet are connected to the air inlet and the air outlet of the evaporating 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 in the casing 8 an evaporating air passage 16 provided with the blower 9 and the evaporator 5, and a condensing air passage 17 provided with the air blower 10 and the condenser 6. The air inlet and the air outlet of the evaporating air passage 16 are communicated with the ceiling chamber F, and the air inlet and the air outlet of the condensing air passage 17 are communicated outdoors. The indoor external air conditioner D is provided with an evaporation air passage 36 provided with a blower 40 and an evaporator 30 and a condensation air passage 37 provided with a blower 41 and a condenser 31 in a casing 29. The air outlet of the evaporation air passage 36 is communicated with the room E, and the air inlet of the evaporation air passage 36 is communicated with the outdoors. The air inlet of the condensing air passage 37 leads to the room E, and the air outlet of the condensing air passage 37 leads to the outdoors. The compressor 4 of the indoor air conditioner A can be controlled in capacity, the blowers 11 and 12 can be controlled in air volume, or both can be controlled, and one or both of capacity and air volume can be controlled. Let it be air conditioner A.
[0009]
In the indoor air conditioner A, the indoor air taken into the evaporating air passage 14 is subjected to heat exchange with the refrigerant circulating in the evaporator 2 and is circulated between the evaporating 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 dissipate heat, and the air is circulated between the condensing air passage 15 and the ceiling chamber F. In the ceiling air conditioner B, the ceiling air taken into the evaporating air passage 16 is heat-exchanged with the refrigerant circulating in the evaporator 5 and is circulated between the evaporating air passage 16 and the ceiling chamber F, and at the same time the condensing air passage 17. The refrigerant flowing in the condenser 6 is subjected to heat exchange with the outside air taken in to absorb or dissipate heat, and air is circulated between the condensation air passage 17 and the outside. The indoor external air conditioner D exchanges heat between the outside air taken into the evaporating air passage 36 with the circulating refrigerant in the evaporator 30 and supplies it to the room E, and at the same time, the indoor air taken into the condensing air passage 37 with the indoor air of the condenser 31. The circulating refrigerant is heat-exchanged to absorb or dissipate the heat and exhaust it 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 external air conditioner D ventilates the room E while recovering heat. The number of indoor air conditioners A can be increased or decreased.
[0010]
FIG. 6 and FIG. 7 show another embodiment, in which the ceiling air conditioner B is replaced with the external air conditioner C in the above embodiment, and the 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, and a part of the air in the ceiling is exhausted to the outside and the air in the ceiling is A heat pump type external air conditioner C that heat-exchanges a part of the outside air and supplies the air to the ceiling chamber F, and a part of the indoor air is exhausted to the outside and the outside air is heat-exchanged with a part of the room air. And a heat pump type indoor air conditioner D for supplying air to E. The external air conditioner C is integrally provided with an external air conditioning refrigerant circulation circuit 22 that can be taken out and stored in the casing 24.
[0011]
The ceiling external air conditioner C includes an evaporating air passage 34 provided with a blower 38 and an evaporator 25 and a condensing air passage 35 provided with a blower 39 and a condenser 26 in the casing 24. The air outlet of the evaporating air passage 34 is communicated with the ceiling chamber F, and the air inlet of the evaporating air passage 34 is communicated outdoors. The air inlet of the condensing air passage 35 is communicated with the ceiling chamber F, and the air outlet of the condensing air passage 35 is communicated outdoors. The refrigerant circulation circuit 22 of the external air conditioner C is formed by connecting 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 heat dissipation of the condenser 26 can be switched. The fin tubes 19 of the condenser 26 and the evaporator 25 are preferably composed of elliptical tubes with low pressure loss (see FIG. 5), but may be circular tubes. As in 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. However, the external-conditioning refrigerant circulation circuit 22 can be taken out and stored in a configuration other than that described above. It is also free to provide.
[0012]
In this case, the external air conditioner C exchanges heat between the outside air taken into the evaporation air passage 34 with the refrigerant flowing in the evaporator 25 and supplies the air to the ceiling chamber F, and at the same time condenses with the air inside the ceiling taken into the condensation air passage 35. The refrigerant flowing in the vessel 26 is heat-exchanged to absorb or dissipate the heat and exhaust it to the outside. The ceiling air conditioner C performs only air temperature control and ventilation of the ceiling chamber F or ventilation of the ceiling chamber F. In addition, in the indoor air conditioner A, as shown by the phantom line in FIG. 2, an outside air inlet 42 communicating with the evaporating air passage 14 is provided, and the indoor air conditioner A is connected to the indoor air for heat exchange with the ceiling air. It may be configured to partially mix, and the room E may be ventilated by providing an exhaust fan or a ventilation fan instead of the indoor external air conditioner D.
[0013]
FIG. 8 shows another embodiment, in which the indoor external air conditioner D is omitted in the embodiment of FIG. 6, and the external air conditioner C exhausts a part of the ceiling air and a part of the indoor air to the outside. The structure is such that the outside air is heat-exchanged by a part of the ceiling / indoor air and the air is supplied to the ceiling chamber F and the room E, and the other configurations are the same. The air outlet of the evaporating 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. The external air conditioner C in this case performs air temperature control and / or ventilation of the ceiling chamber F and ventilation of the room E.
[0014]
In each of the above-described embodiments, as the indoor external air conditioner D, in addition to the present embodiment, a configuration having a function of supplying fresh outdoor air indoors and exhausting indoor air, a ventilation unit, etc. Changes are free.
[0015]
【The invention's effect】
According to the first aspect of the present invention, waste heat such as cooling in winter can be eliminated by exhausting heat from the ceiling where heat is easily trapped and air-conditioning the room with the temperature-adjusted ceiling air. In addition, when the heating operation is started 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 differs for each indoor air conditioner, the temperature of the ceiling air is leveled by mixing, and the load on the air conditioner and the external air conditioner for adjusting the temperature in the ceiling can be reduced, resulting in energy saving. Because it is a heat pump type, there is no need for additional equipment such as a heat source machine, which can reduce equipment costs. The air duct can be short, and the power cost for air blowing can be reduced . The temperature inside the ceiling can be adjusted without exchanging heat only by ventilation of the air in the ceiling according to the outside air temperature, thus saving energy . Chamber lest the outer conditioner is unnecessary, and ventilate the ceiling in the room at one outer conditioner can temperature control, thereby reducing the equipment cost. All air conditioning such as outside air treatment, ventilation, and air conditioning can be done with indoor air conditioners and air conditioners.
According to the second aspect of the present invention, an indoor air conditioner is not required, and the temperature can be controlled by ventilating the room simply by providing a ventilating fan for exhausting the room, and the equipment cost can be reduced.
In the invention of claim 3 , since it is a heat pump type air conditioner and an external air conditioner that are integrally provided with a refrigerant circulation circuit, the refrigerant piping work after installation is not required, the construction is simple, and the indoor installation is easy. Without removing the entire casing, only the refrigerant circulation circuit can be taken out of the casing to easily perform the refrigerant recovery operation and maintenance, and the installation and storage are not time-consuming. In addition, by replacing only the refrigerant circuit, the cost for renewal can be reduced.
According to the fourth 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 is different for each indoor air conditioner, and an air duct and VAV are not required, and the construction is facilitated.
In the fifth aspect of the present invention, even when used at a high wind speed, the pressure loss does not increase and the heat exchange capacity does not decrease, so that a small evaporator and condenser can be used, and the air conditioner and the external air conditioner can be made compact. Moreover, since the pressure loss is reduced at the normal wind speed and the heat exchange efficiency is improved, 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.
FIG. 2 is a plan view of the indoor air conditioner.
FIG. 3 is a front sectional view of a ceiling air conditioner.
FIG. 4 is a front cross-sectional view of an indoor external air conditioner.
FIG. 5 is a cross-sectional view of a fin tube.
FIG. 6 is a perspective view showing another embodiment with a part thereof broken.
FIG. 7 is a front sectional view of the external air conditioner.
FIG. 8 is a perspective view showing another embodiment with a part thereof broken.
[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 Air Conditioner E Indoor F Ceiling chamber

Claims (5)

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, and a part of the air in the ceiling is exhausted to the outside and one of the air in the ceiling is discharged. A heat pump type external air conditioner C for exchanging heat from outside air and supplying air to the ceiling chamber F. The external air conditioner C exhausts part of the ceiling air and part of the room air to the outside. In addition , the heat pump air-conditioning system is configured such that the outside air is heat-exchanged by a part of the ceiling / indoor air and is supplied to the ceiling chamber F and the room E. The heat pump air conditioning system according to claim 1, wherein the indoor air conditioner A is configured to mix a part of the air in the ceiling with the indoor air for heat exchange . 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 external conditioner C can be taken out and stored in the casing 24. The heat pump air conditioning system according to claim 1 or 2, wherein The heat pump air-conditioning system according to claim 1, 2, or 3, characterized in that one or both of the capacity and the air volume is controllable indoor air conditioner A. The heat pump air-conditioning system according to claim 3, wherein the fin tubes 19 of the evaporators 2 and 25 and the condensers 3 and 26 of the indoor refrigerant circulation circuit 20 and the external refrigerant circulation circuit 22 are constituted by elliptic tubes .

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