JPH0914694A - Water heat source heat pump unit air conditioning system and water heat source heat pump air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an energy-saving type individual air conditioning system that uses exhaust air. [Structure] This system is a water heat source type heat pump unit air conditioner 10 installed indoors to cool and heat an air-conditioned room.
2 and a gas-liquid direct contact heat exchanger 104 that cools or heats the heat source water passing through the air conditioner 102 with exhaust air.
And a heat source water circulation system 1 for circulating the heat source water between the air conditioner 102 and the heat exchanger 104 by the heat source water circulation means 124c.
24, and an exhaust fan 114 for sending exhaust air to the heat exchanger 104. Therefore, by cooling or heating the heat source water by the exhaust air in the gas-liquid direct contact heat exchanger 104, heat can be recovered from the exhaust air and desired conditioned air can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner and an air conditioner system, and more particularly to an air conditioner system and an air conditioner using a water heat source type heat pump for cooling and heating by a water heat source type heat pump.

[0002]

2. Description of the Related Art In recent years, the system for air conditioning equipment in office buildings, etc. has changed from a central system to an individual distributed system in response to an increase in cooling load due to intelligent building functions and a demand for a comfortable office environment. It's starting. Individual air conditioning systems such as a unit type heat pump and a multi-type air conditioner have been proposed as air conditioning equipment corresponding to such an individual distributed building air conditioning system.

For example, a typical multi-type air conditioning system is
Multiple indoor units are connected to one outdoor unit,
Each indoor unit is configured to be individually controllable such as operation stop and room temperature setting. Such a multi-system air conditioner is ideal for an individual dispersion system because it has excellent individual operation control characteristics, and it can also reduce heat transfer power, so it can also significantly reduce energy consumption. Has been done.

However, when installing the above-mentioned multi-type air conditioning equipment, the length and height difference of the refrigerant pipes connecting the indoor unit and the outdoor unit vary depending on the installation location, and the cooling capacity depends on the installation site. Since it is necessary to individually make predictions, setting of the piping system, and proper adjustment of the oil injection amount, design and construction were complicated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the conventional individual air conditioning system as described above, and the object thereof is to use the conventional air conditioning system without being used. The indoor exhaust air that has been exhausted is used as a heat source. Therefore, it is apparently not necessary to connect a heat source, and it is excellent in energy saving by recovering exhaust heat, and it is possible to flexibly respond to the partial load of each air conditioning space. It is to provide a new and improved water heat source type heat pump unit air conditioning system and water heat source type heat pump air conditioner, which are particularly effective in increasing the cooling capacity of an existing air-conditioned room.

[0006]

In order to solve the above-mentioned problems, according to claim 1, a water heat source type heat pump unit air conditioning system is installed in a room to cool and heat the water heat source type heat pump unit air conditioner. Machine, water heat source type heat pump unit, a gas-liquid direct contact heat exchanger that cools or heats the heat source water that is passed through the air conditioner with exhaust air,
Heat source water circulation system that circulates heat source water between the water heat source type heat pump unit air conditioner and the gas-liquid direct contact heat exchanger, and a water supply system that supplies makeup water to the gas liquid direct contact heat exchanger. And an exhaust means for supplying exhaust air to the gas-liquid direct contact heat exchanger.

According to a second aspect, there is provided a mode in which the constituent elements of the air conditioning system according to the first aspect are integrally configured as a unit of the same body.

[0008]

According to the present invention, the heat source water is cooled or heated by the gas-liquid direct contact heat exchanger using the exhaust air from the room, for example, the toilet or the kitchen as the heat source. Then, the cooled or heated heat source water is passed to the water heat source type heat pump unit air conditioner through the heat source water circulation system by the heat source water circulation means such as a pump, and by removing heat from the heat medium circulating in the air conditioner, It is possible to supply cold air to the air-conditioned room (cooling operation) or to supply warm air to the air-conditioned room by radiating heat to the heat medium (heating operation). The heat source water reduced by evaporation can be appropriately supplemented by a water supply system.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a water heat source heat pump unit air conditioning system and a water heat source heat pump air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings. 1 and 2 show an embodiment of a water heat source type heat pump unit air conditioning system according to the present invention. FIG. 1 is a schematic side view of the configuration, and FIG. 2 is a schematic diagram of the configuration. The top view is shown. Further, FIG. 3 shows an embodiment of a water heat source type heat pump air conditioner according to the present invention configured as a single unit.

As shown in FIG. 1, a water heat source type heat pump unit 102 is installed on the ceiling of the air conditioning room 108, and desired cold air or warm air can be supplied into the air conditioning room. This water heat source type heat pump unit 102
Includes a compressor, a condenser, an evaporator, and an expansion valve that are integrally housed in a unit of the same body.For example, during cooling operation, a water-heat medium heat exchanger that functions as a condenser. Cooling air can be supplied to the room from the heat medium-air heat exchanger that functions as an evaporator by removing heat from the heat medium by passing the heat source water cooled in 102a. Also,
During the heating operation, the heated heat source water is sent to the heat pump, and the heat pump is operated in the reverse cycle of the cooling operation, and warm air can be supplied to the room from the heat medium-air heat exchanger functioning as a condenser.

An exhaust unit 112 is also installed on the ceiling of the air conditioning room 108. An exhaust fan 114 is housed in the exhaust unit 112, and the duct 116
Exhaust air can be sent to the gas-liquid direct contact heat exchanger 104 via a. The exhaust air is heat-exchanged with the heat source water in the gas-liquid direct contact heat exchanger 104, and then the duct 11
The gas is exhausted from an exhaust port 118 that opens to the outside of the room via 6b. As the gas-liquid direct contact heat exchanger 104, it is possible to use, for example, a small cooling tower specification including a filler, an eliminator, a sprinkling pipe, and a water tank. The heat source water is sprinkled from the sprinkling pipe. However, it can be recovered by contacting with exhaust air for heat exchange, cooling or heating. Further, the heat source water reduced by evaporation or the like can be appropriately supplied to the gas-liquid direct contact heat exchanger 104 by the pump 122 via the pipe 120.

The water heat source type heat pump unit 102 and the gas-liquid direct contact heat exchanger 104 are connected by a heat source water circulation system 124. This heat source water circulation system 12
4 is from the heat exchanger 104 to the heat pump unit 102.
An outward path 124a for sending the cooled or heated heat source water to
The heat pump unit 102 includes a return path 124b for returning return water that has undergone heat exchange to the heat exchanger 104, and a circulation pump 124c for circulating heat source water.

Next, the operation of the water heat source type heat pump unit air-conditioning system configured as described above will be described by taking the cooling operation as an example.

First, the air conditioning chamber 108 is operated by the exhaust means 114.
The exhaust air from is sent to the gas-liquid direct contact heat exchanger 104 installed on the ceiling 106, where the heat source water sprinkled from the sprinkler pipe is cooled. The heat source water cooled to an appropriate temperature is sent to the condenser 102a of the water heat source type heat pump unit air conditioner 102 via the outward path 124a. Condenser 1
In 02a, the heat source water is the heat pump unit air conditioner 1
The heat medium circulating in 02 is cooled, and the cooled heat medium removes heat from the air supplied into the air-conditioning chamber 108 in a heat medium-air heat exchanger (not shown), and the heat medium desired in the air-conditioning chamber 108 is removed. The cold air cooled to the temperature is supplied. When performing the heating operation, the heat source water is heated by the exhaust air in the gas-liquid direct contact heat exchanger 104, the heated heat source water is sent to the heat pump unit air conditioner 102, and the heat pump unit air conditioner 102 is cooled. By operating in a cycle that is reverse to that during operation, it is possible to supply hot air warmed to a desired temperature into the air-conditioning chamber 108.

As described above, in the air conditioning system of this embodiment, the exhaust air is used as the heat source, and the system apparently does not require the heat source supply. Therefore, the heating / cooling capacity of the air conditioning system is substantially determined by the difference between the available air amount and the use temperature of the heat source, and the power consumption (heat pump coefficient of performance) can be obtained accordingly.

For example, the gas-liquid direct contact heat exchanger 104
Of the available exhaust air volume by considering the design of
If you set 00 cubic meters / hour and water-air ratio to 4, the available exhaust air volume: 100 cubic meters / hour Use temperature difference: Gas-liquid direct contact heat exchanger inlet air wet bulb temperature 15 ℃ Same outlet air wet bulb temperature Approximately 38.5 ℃ Same inlet water temperature 43 ℃ Same outlet water temperature Approximately 36 ℃ Same amount of water 480 liters / hour Same amount of heat exchanged About 3300 kcal / hour, a water heat source type heat pump unit air conditioning system with a cooling capacity of more than 2000 kcal / hour Can be built.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment. Those skilled in the art can make various changes and modifications within the scope of the technical idea described in the claims,
It is understood that these also belong to the technical scope of the present invention.

For example, FIGS. 1 and 2 show a ceiling concealment type air conditioning system in which a water heat source type heat pump unit is installed in the ceiling, but the present invention is not limited to such an example, and the water heat source type heat pump is shown. The unit can be constructed in various ways, such as a wall-through type, a floor-standing concealed type, or a ceiling-suspended cassette type. The gist of the present invention is that by arranging a gas-liquid direct contact heat exchanger in the exhaust path of indoor air, recovering heat from the exhaust air there, and supplying heat source water to the water heat source type heat pump unit, it is apparent Since it is to build a self-contained air conditioning system that does not require a heat source, any structure can be adopted as long as it has a structure that can achieve such an object.

In the illustrated embodiment, the exhaust air for the heat source is collected from the same air-conditioned space, and the cold air or the warm air conditioned by the exhaust air is supplied to the same air-conditioned space. However, for example, the exhaust air can be collected from a space other than the air-conditioned space such as a toilet or a kitchen. In this case, it is preferable to use exhaust gas from the toilet or the like that has a temperature close to that of the air conditioning room due to inflow from the air conditioning room through the pass duct or the grill of the door.

Also, in the illustrated embodiment, the exhaust fan 11
Although 4 is housed in the exhaust unit 112 installed on the ceiling, it is of course possible to provide an intermediate fan when the duct path for sending the exhaust air is long.

Furthermore, in the illustrated embodiment, a space of about 20 square meters is assumed as an air-conditioned space, and heat is recovered from exhaust air from the air-conditioned space to air-condition the same air-conditioned space. Although the configuration in which one gas-liquid direct contact heat exchanger is connected to the heat source heat pump unit is shown, it is optional depending on the size of the target air-conditioned space and the amount and temperature of exhaust air that can be used. It is possible to connect an arbitrary number of gas-liquid direct contact heat exchangers to each of the water heat source type heat pump units.

Furthermore, in the illustrated embodiment, an example in which the water heat source type heat pump unit and the gas-liquid direct contact heat exchanger are constructed separately is shown, but these constituent elements are integrated as a single unit. It is also possible to configure it physically. Next, another embodiment in which a water heat source type heat pump air conditioner is configured as a single unit will be described with reference to FIG.

As shown in FIG. 3, the present air conditioner includes a water heat source type heat pump 204, a gas-liquid direct contact heat exchanger 206, a heat source water circulation system 208, an exhaust fan 210, and a supply fan in a housing 202. The air fan 212 is housed integrally and configured as a floor-standing air conditioner.

The water heat source type heat pump 204 includes a compressor 204a and a heat medium-water heat exchanger 20 via a heat medium circulation system.
4b, expansion valve 204c, heat medium-air heat exchanger 204
and d are connected by a four-way valve 204e so that the flow direction of the heat medium can be switched. Further, the heat source water circulation system 208 can circulate the heat source water heated or cooled between the gas-liquid direct contact heat exchanger 206 and the heat medium-water heat exchanger 204b of the heat pump 204 by the circulation pump 208a. Is plumbed as. Further, the exhaust fan 210 sends exhaust air from the room through an exhaust port (not shown) to the gas-liquid direct contact heat exchanger 206, heats or cools the heat source water with the heat, and then exhausts it through an exhaust port (not shown). It is for exhausting air to the outside of the room. The air supply fan 212 is for supplying the conditioned air heated or cooled by the heat medium-air heat exchanger 204d of the heat pump 204 to the conditioned space. Further, a water supply pipe 214 is connected to the gas-liquid direct contact heat exchanger 206, so that the heat source water which is insufficient due to evaporation or the like can be appropriately supplemented.

Next, the operation of the water heat source type heat pump air conditioner shown in FIG. 3 will be briefly described. During cooling operation,
Gas-liquid direct contact heat exchanger 2 for heat medium-water heat exchanger 204b
At 06, the heat source water cooled by the exhaust air is sent to the heat medium-water heat exchanger 204b of the heat pump 204, and the four-way valve 204e is switched to move the heat medium to the compressor 204.
a → four-way valve 204e → heat medium-water heat exchanger 204b (condenser) → expansion valve 204c → heat medium-air heat exchanger 204d
It is possible to circulate (evaporator) → four-way valve 204e → compressor 204a, cool the conditioned air by the evaporator 204d, and supply cool air to the conditioned space by the air supply fan 212. On the other hand, during heating operation, the heat source water is heated by the exhaust air, the heat pump 204 is operated in the reverse cycle of the cooling operation, and the conditioned air is warmed by the heat medium-air heat exchanger 204d functioning as a condenser, Hot air can be supplied to the air-conditioned space by the air supply fan 212.

As described above, according to the water heat source type heat pump air conditioner shown in FIG. 3, it is possible to construct a compact self-contained air conditioning unit that apparently does not require a heat source. , 20 square meters), it is possible to provide a comfortable air-conditioning environment that responds delicately to different heat loads in each local space.

The air conditioning unit shown in FIG. 3 is merely one embodiment of the water heat source type heat pump air conditioner according to the present invention, and those skilled in the art can understand the technical idea of the present invention described in the claims. It goes without saying that various changes and modifications can be made within the scope of the above, and these also belong to the technical scope of the present invention.

[0028]

As described above, according to the present invention,
Air conditioning is performed by using indoor exhaust air that has been exhausted without being used as a heat source, so it is apparently unnecessary to connect a heat source and is excellent in energy saving by recovering exhaust heat. Can be built. Further, according to the present invention, since a self-contained air conditioning system can be constructed, by installing each air conditioning system in each predetermined local space, it is possible to flexibly respond to different heat load requirements for each local space. Is possible.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a schematic configuration according to an embodiment of a water heat source type heat pump unit air conditioning system according to the present invention.

FIG. 2 is a schematic plan view of the air conditioning system shown in FIG.

FIG. 3 is a schematic configuration diagram showing a schematic configuration according to an embodiment of a water heat source type heat pump air conditioner according to the present invention.

[Explanation of symbols]

 102 water heat source type heat pump unit 104 gas-liquid contact type heat exchanger 108 air-conditioned space 114 exhaust fans 116a, 116b exhaust duct 122 water supply pump 124 heat source water circulation system

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hitoshi Enomoto 3-9-12 Kameino, Fujisawa-shi, Kanagawa 103 Maple Town Rokukai 103

Claims (2)

[Claims] 1. A water heat source type heat pump unit air conditioner installed indoors for cooling and heating an air conditioning room, and a gas liquid for cooling or heating heat source water passing through the water heat source type heat pump unit air conditioner with exhaust air. Direct contact type heat exchanger, heat source water circulating system for circulating heat source water between the water heat source type heat pump unit air conditioner and the gas-liquid direct contact type heat exchanger by the heat source water circulating means, and the gas-liquid direct contact type A water heat source type heat pump unit air conditioning system comprising a water supply system for supplying makeup water to a heat exchanger, and an exhaust means for supplying exhaust air to the gas-liquid direct contact heat exchanger. 2. A water heat source type heat pump for cooling and heating an air conditioning room, and a gas-liquid direct contact heat exchanger for cooling or heating the heat source water passing through the water heat source type heat pump unit air conditioner with exhaust air. A heat source water circulation system for circulating heat source water between the water heat source type heat pump unit air conditioner and the gas-liquid direct contact heat exchanger by a heat source water circulation means,
Exhaust means for sending exhaust air to the gas-liquid direct contact heat exchanger and at least a part of a water supply system for supplying makeup water to the gas-liquid direct contact heat exchanger are integrated as a unit. A water heat source type heat pump air conditioner characterized by being configured as follows.