JP2879117B2 - Air heat source type air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention supplies air-conditioned air generated by an air conditioner as primary air-conditioned air to a cold (warm) chamber space, while supplying unitary heat pumps as heat source air. The present invention relates to an air heat source type air conditioner which supplies or supplies air in a cold (warm) chamber space to a heat pump as heat source air.

[Conventional technology]

An air conditioner that exchanges heat by transferring cold (warm) water generated by heat source equipment to a plurality of unitary heat pumps installed in the indoor space through a transfer pipe is a multi-unit air conditioner that uses heat source water. Are known.

Referring to FIG. 3, cold (warm) water sent by a circulation pump 34 is supplied to a boiler 33, and cold (warm) water heated to a temperature of 15 ° C. to 40 ° C. is supplied to a three-way valve 35 throughout the year. Through a three-way valve 38 by a circulating pump 36 to the heat-source water transport pipe 31 on the feed side, and further through a branch pipe 40. The water is sent to a heat pump 39..., Where heat is exchanged with the evaporator or the condenser, and then the cold (warm) water is returned to the pump 34 via the return side transfer pipe 32. Then, cool air or warm air that has been heat-exchanged by the evaporator or the condenser of the unitary heat pump 9 is blown into the indoor space.

On the other hand, when the temperature of the heat source water exceeds 40 ° C., the cooling tower 37 performs a heat radiation operation and sends the water after the heat radiation to the feed-side transport pipe 31 through the three-way valve 38, and the temperature of the heat source water becomes When the temperature is lower than, the water is heated by the boiler 33 to send water.

Then, the blower 43 for outside air processing takes in the room air by the blower 41, exhausts a part of the air to the outside, then takes in the outside air, cools and dehumidifies it with the cooling coil 42 for air cooling, and removes the room air. Blows out secondary air SA.

 Note that reference numeral 44 in the figure denotes a damper.

[Problems to be solved by the invention]

Since the above-described air conditioner is provided with a unitary heat pump, it is possible to arbitrarily switch the cooling (warming) chamber by switching a valve (not shown). Fine-grained temperature control is possible, and it has a heat recovery function, so it has the advantage of being able to operate with energy savings.On the other hand, it has a heat source water transfer pipe, so there is a possibility of water leakage. There is, therefore, intelligent that water leakage must be avoided as much as possible. In buildings and the like, there is a problem that it is difficult to adopt a heat source water transfer type air conditioner.

Further, a ventilator for taking in outside air must be provided, and thus there is a problem that a large space is required, and there is a problem that equipment costs are increased.

The present invention has been made in view of the above-described problems, and has as its object to share air-conditioned air sent from an air conditioner as primary air-conditioned air and as a heat source air for a heat pump. An air heat source that eliminates the need for a heat source water transfer pipe installed from the air conditioner to the cold (warm) chamber space, thereby eliminating the risk of water leakage and eliminating the need for a separate ventilation device for outside air treatment Type air conditioners.

Further, according to the present invention, as the heat source air of the above-described heat pump, air in a cold (warm) chamber space can be used.
It is an object of the present invention to provide an air heat source type air conditioner capable of reducing a cross-sectional dimension of a feed side transfer duct.

[Means for solving the problem]

In order to solve the above-described problems, the present invention is configured such that an air-conditioning device that generates air-conditioned air is connected to a feed-side conveying duct and a return-side conveying duct of the air-conditioned air, and the air-conditioned air conveyed from the air conditioner is supplied to a heat source air The unitary heat pump that returns the heat source air after heat exchange to the air conditioner is interposed and connected to the feed-side transfer duct and the return-side transfer duct, and the send-side transfer duct receives the conditioned air from the air conditioner as the primary air-conditioned air. And a suction port for sucking air in the cold (warm) chamber space is provided in the return-side transport duct.

Further, the present invention is configured such that a heat source air return side of a unitary heat pump having an opening for taking in air in a cold (warm) room space as heat source air is connected to a return side conveyance duct of the air conditioner. It is.

[Action]

The conditioned air sent from the air conditioner is used as heat source air.
The air is sent to the unitary heat pump via the feed-side transfer duct, where heat is exchanged, and the generated cool air or warm air is blown out to the cool (warm) chamber space, while the conditioned air is used as primary conditioned air from the outlet. Let out.
Then, the air in the cold (warm) chamber space and the heat source air after the heat exchange are sent to the air conditioner via the sending-side transfer duct.

In addition, the air in the cold (warm) chamber space is sent to the unitary heat pump as heat source air, heat exchange is performed on the heat pump, and the heat source air after the heat exchange is sent to the air conditioner via the feed side transfer duct.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a configuration diagram of a first embodiment of the present invention. In the drawing, reference numeral 1 denotes a blower 2, a reheating coil 3, and a cooling coil 4, and the conditioned air generated thereby is subjected to primary air conditioning. It is an air conditioner that sends out air and heat source air. This air conditioner 1 is connected to a sending-side transfer duct 5 that sends out conditioned air as primary conditioned air toward a cool (warm) room space and sends conditioned air as heat source air to a unitary heat pump 10. On the other hand, a return conveyance duct 6 that returns the air sucked from the cold (warm) chamber space and the heat source air after heat exchange from the unitary heat pumps 10 to the air conditioner 1 is connected.

The feed-side transport duct 5 is connected via a branch duct 8.
The heat source air intake side of a heat pump 10 having an evaporator-equipped condenser 9 (usually referred to as an evaporator), such as an air conditioner such as an evaporator or a condenser, or an outdoor unit such as a room air conditioner, is connected. Then, the return side of the heat pumps 10 is connected to the return side transfer duct 6, whereby the heat pumps 10 are interposed and connected between the feed side transfer duct 5 and the return side transfer duct 6.

In the figure, reference numeral 12 denotes air-conditioned air from the air conditioner 1.
An outlet for blowing out the next conditioned air and an inlet 11 for sucking the secondary air in the indoor space are shown.

The operation of the device configured as described above will be described. The air-conditioning air, which is obtained by heating the air after cooling and dehumidification from the air conditioner 1 by the cooling coil 4 by the reheating coil 3,
The air is blown out as primary air-conditioned air from the air outlets 12 to the indoor space via the feed side transfer duct 5. On the other hand, this conditioned air is converted into heat source air, sent to a heat pump 10 having a condenser 9 with an evaporator through a feed side conveying duct 5 and a branch duct 8, and performing heat exchange with the heat source air. As shown by the solid arrow, the room air sucked is cooled or heated and sent out to perform cooling (warming).

The heat source air after heat exchange in the condenser 9 with the evaporator of the heat pump 10... And the air after cooling (warming) the indoor space sucked from the suction ports 11.
Is sucked into the air conditioner 1 via the

FIG. 2 shows a configuration diagram of a second embodiment of the present invention. In the air conditioner 1 having the same configuration as that shown in FIG. A feed-side transfer duct 18 having ports 12... Is connected, and a return-side transfer duct 19 is connected to the conditioned air return side of the air conditioner 1.

The duct 19 is provided with a condenser 9 with an evaporator and a unitary heat pump 10 with an opening 15 for taking air in a cold (warm) space into the condenser 9 with an evaporator as heat source air.・ The return side of the return duct
Connected via 17. In this duct 19,
Similarly, a suction port 11 is provided.

In this device, the air-conditioned air blown from the air conditioner 1 is blown out as primary air-conditioned air from the air outlets 12 through the feed-side transport duct 18 into the indoor space.

On the other hand, in the heat pumps 10..., The air in the cold (warm) chamber space is taken into the condenser 9 with the evaporator through the opening 15 as the heat source air. Then, the air sucked from the indoor space as shown by the solid arrow is cooled or the conditioned air heated is sent out to the indoor space as shown by the solid arrow.

The heat source air heat-exchanged in the condenser 9 with the evaporator by the air in the cold (warm) chamber space taken in from the opening 15 is returned to the return-side transport duct 19 via the branch duct 17 by the driving of the blower fan 2. And is sucked into the air conditioner 1 via the return side transfer duct 19.

In this case, since the air in the cold (warm) chamber space is used as the heat source air, the air conditioning is performed by the personal air conditioning control system, similarly to the package air conditioner.

Note that, in the heat pumps shown in the above two embodiments,
By condensing the condensed water generated during cooling in the evaporator of the condenser 9 with an evaporator, it is possible to evaporate the condensed water, thereby eliminating the need for a drain pipe. I can do it.

〔The invention's effect〕

As described above, according to the present invention, the air-conditioning device that generates the conditioned air is connected to the air-conveying air supply duct and the return-side conveyance duct, and takes in the conditioned air conveyed from the air conditioner as heat source air. A unitary heat pump that returns the heat source air after heat exchange to the air conditioner is interposed and connected between the sending-side transfer duct and the return-side transfer duct, and the conditioned air from the air conditioner is used as the primary conditioned air in the send-side transfer duct. Since it is configured to provide a blow-off port, a duct for conveying conditioned air from the air conditioner may be installed between the air conditioner and the heat pump installed in the indoor space. This eliminates the need for an air conditioner, so that it is possible to eliminate water leakage accidents in the air conditioner installation space, and to use the conditioned air generated by the air conditioner as the primary conditioned air. Because, without the installation of the air conditioner for outside air ventilation required, Therefore on it is possible to reduce the initial cost can be reduced and the installation space.

Further, since the suction port for sucking the air in the cold (warm) chamber space is provided in the return-side transport duct, it is possible to exhibit an exhaust heat recovery action.

Further, according to the present invention, the heat source air return side of the unitary heat pump having an opening for taking in the air in the cold (warm) room space as the heat source air is connected to the return side transfer duct of the air conditioner. As a result, the air in the cold (warm) chamber space can be used as the heat source air for the unitary heat pump, so that the feed-side transport duct needs to convey only the primary conditioned air sent to the cold (warm) chamber space. Accordingly, the cross-sectional dimension of the feed-side conveying duct can be reduced, so that the space can be reduced and the equipment cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the apparatus of the present invention, FIG. 2 is a block diagram of a second embodiment of the apparatus of the present invention, and FIG. 3 is a conventional example in which heat exchange is performed using heat source water. FIG. 2 is a configuration diagram of the device. 1 ... air conditioner, 5 ... feed-side transfer duct, 6 ... return-side transfer duct, 8 ... branch duct, 9 ... condenser with evaporator, 10 ... unitary heat pump, 11 ... outlet, 12… suction port, 15… opening, 17… return duct,

Claims (2)

(57) [Claims] An air conditioner for generating conditioned air is connected to a feed duct and a return duct for the conditioned air,
A unitary heat pump that takes in the conditioned air conveyed from the air conditioner as heat source air and returns the heat source air after heat exchange to the air conditioner is interposed and connected to the feed side transfer duct and the return side transfer duct, and The outlet duct for blowing out the conditioned air from the air conditioner as primary conditioned air is provided in the feed-side transport duct, and the suction port for sucking air in the cold (warm) chamber space is provided in the return-side transport duct. Air heat source type air conditioner. 2. A heat source air return side of a unitary heat pump having an opening for taking in air in a cool (warm) room space as heat source air is connected to a return side transfer duct of the air conditioner. Item (1).