JPH05272780A - Heat pump type air conditioner - Google Patents

Abstract

PURPOSE:To suppress the cold heat loss in cooling operation, reduce the city water used for humidification in heating operation and reduce the system of water discharging pipeline by using condensed water effectively. CONSTITUTION:The subject device is provided with a water evaporating means 11, evaporating water by condensing heat generated in a heat exchanger 2 for heat source, a humidifying means 10, humidifying supplying air SA heated by condensing heat generated in another heat exchanger 1 for regulating temperature, a pump 16, transporting the condensed water W of the heat exchangers, and a switching means 18, switching a condensed water transporting route 17 from heat source side water feeding condition, supplying the condensed water W generated in the heat exchanger 1 for regulating temperature into the water evaporating means 11 by the pump 16 as evaporating water, into a temperature regulating side water feeding condition, supplying the condensed water W in the heat exchanger 2 for heat source into the humidifying means 10 by the pump 16 as humidifying water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for temperature control, in which a supply of heat to an air-conditioning target area is used as a heat exchange target, and a heat exchanger for a heat source in which outside air is a heat transfer target. And a heating operation in which the heat regulation heat exchanger functions as a refrigerant condenser and the heat source heat exchanger functions as a refrigerant evaporator. The present invention relates to a heat pump type air conditioner.

[0002]

2. Description of the Related Art Conventionally, in a heat pump type air conditioner as described above, drain water is discharged from condensed water generated in a heat exchanger for temperature control during cooling operation and condensed water generated in a heat exchanger for heat source during heating operation. It was discarded through the pipe to the outside of the device.

[0003]

However, even if the condensate generated in the heat exchanger for temperature control in the cooling operation and the condensate generated in the heat exchanger for the heat source in the heating operation are both discharged, the flow rate of the discharged water will be a considerable amount. It was necessary to install a drainage piping system with a wastewater treatment capacity.

In addition, in the cooling operation, the waste heat of the condensed water retained by the condensed water generated in the heat exchanger for temperature control is discharged to the outside of the apparatus, resulting in a cooling loss. In the heating operation, city water is generally consumed. Although humidification of the supply air used as humidification water is performed, there is also a problem that the consumption of city water is large as this humidification water.

An object of the present invention is to reduce the required drainage piping system, suppress the cooling heat loss during the cooling operation, and reduce the city water consumption by a rational condensate treatment structure.

[0006]

The heat pump type air conditioner according to the present invention is characterized in that a heat exchanger for temperature control, which heats air supplied to an air conditioning target area, functions as a refrigerant evaporator, Cooling operation in which the heat source heat exchanger intended for heat transfer functions as a refrigerant condenser, and the temperature adjustment heat exchanger function as a refrigerant condenser, and the heat source heat exchanger functions as a refrigerant evaporator. In a configuration capable of switching to a heating operation for heating, a water evaporation means for evaporating water by heat of condensation generated in the heat exchanger for heat source and a supply air heated by heat of condensation generated in the heat exchanger for temperature adjustment are humidified. And a pump for transporting the condensed water of the heat exchanger,
The heat source side water supply state in which the condensed water generated in the heat exchanger for temperature control is supplied to the water evaporating means by the pump as evaporation water, and the condensed water generated in the heat exchanger for heat source is used as humidification water by the pump. This is because the switching means for switching the condensed water transportation path is provided for the temperature control side water supply state to be supplied to the humidifying means, and the operation and effect thereof are as follows.

[0007]

That is, according to the above-mentioned characteristic configuration, in the cooling operation, the condensed water transportation path is switched to the heat source side water supply state, the condensed water generated in the temperature control heat exchanger is supplied to the water evaporation means, and this supply is performed. By evaporating the condensed water with the heat of condensation generated by the heat source side heat exchanger, the heat dissipation of the condensation heat in the heat source side heat exchanger can be promoted to enhance the cooling capacity of the heat pump.

In the heating operation, the condensed water transportation path is switched to the temperature control side water supply state and the generated condensed water in the heat source side heat exchanger is supplied to the humidifying means to supply the condensed water. Can be humidified.

[0009]

As a result of the above, as a result of the action, in the cooling operation, the cooling heat loss due to the conventional condensation water disposal can be converted into the improvement of the cooling capacity and the energy efficiency can be improved, and in the heating operation, the humidification using the condensed water can be used. The amount of water used can be saved.

Further, by effectively using the generated condensed water as described above in both the cooling operation and the heating operation by switching the condensed water transportation path, even if some of the condensed water is discarded, the condensed water is discarded throughout the year. The amount can be reduced and the drainage pipe system for condensed water can be reduced. Also, depending on the design conditions, it is possible to eliminate the need to dispose of condensed water throughout the year and eliminate the need for additional facilities for the drainage pipe system for condensed water. Becomes

[0011]

EXAMPLES Next, examples will be described.

In FIG. 1, 1 is a heat exchanger for temperature control, 2 is a heat exchanger for heat source, and these heat exchangers 1 and 2 together with a compressor and an expansion mechanism constitute a heat pump in an air conditioner 3 and a refrigerant circulation. By changing the form, the heat regulation heat exchanger 1 is made to function as a refrigerant evaporator in the cooling operation, and
The heat exchanger for heat source 2 is made to function as a refrigerant condenser, while
On the contrary, in the heating operation, the temperature adjustment heat exchanger 1 functions as a refrigerant condenser, and the heat source heat exchanger 2 functions as a refrigerant evaporator.

The return air RA, which is guided from the area to be air-conditioned to the air conditioner 3 via the return air duct 4, is introduced into the temperature control chamber 5 inside the air conditioning system, and the return air RA is cooled by the passage of the temperature control heat exchanger 1. After being cooled by taking the heat of vaporization of the refrigerant in the operation, and being heated by giving the heat of condensation of the refrigerant in the heating operation, it is fed to the air conditioning target area via the air supply duct 6 as the air supply SA.

In addition, the outside air OA which is guided from outside to the air conditioner 3 through the outside air duct 7 is introduced into the heat source chamber 8 inside the machine, and this outside air OA is the object of heat dissipation of the refrigerant condensation heat in the cooling operation.
In the heating operation, after passing through the heat source heat exchanger 2 as an object to absorb the heat of vaporization of the refrigerant, it is discharged to the outside through the exhaust duct 9 as the exhaust EA.

When a function of ventilating the air conditioning target area is provided, a part of the return air RA is mixed with the outside air OA and a part of the outside air OA is mixed with the return air RA.

Numeral 10 is a moisturizing humidifying water attached to the outlet side of the temperature adjusting heat exchanger 1 as a humidifying means for the supply air SA heated by the temperature adjusting heat exchanger 1 in the heating operation. The material layer or 11 serves as a means for evaporating water by the heat of condensation generated in the heat source side heat exchanger 2 in the cooling operation, and has water vapor permeability which is attached to the air passage opening surface of the heat source side heat exchanger 2. It is a water-containing material layer.

Reference numeral 12 denotes condensed water W generated in the temperature control heat exchanger 1.
A heat-control-side drain pan that receives the heat-condensation water, and a heat-source-side drain pan 13 that receives the condensed water W generated in the heat-source-side heat exchanger 2. The temperature adjustment side drain pan 12 is arranged at a higher position than the heat source side drain pan 13 so that the temperature adjustment side drain pan 12 is allowed to flow into the same 13 and is connected to each other by a communication pipe 14.

Further, the heat source side drain pan 13 is provided with a drain pipe 15 for discharging the stored water W out of the machine so that the stored water level does not exceed a predetermined full water level HL.
A water supply pipe 17 for connecting the stored water W of the heat source side drain pan 13 to the humidifying water-containing material layer 10 and the water evaporation water-containing material layer 11 by a pump 16 is connected.

Reference numeral 18 is a switch for switching the transportation route between the temperature control side water supply state in which the water supply W supplied by the water supply pipe 17 is supplied to the humidifying water-containing material layer 10 and the heat source side water supply state in which it is supplied to the water evaporation water-containing material layer 11. It is a valve.

That is, in the cooling operation, the condensed water W generated in the temperature control heat exchanger 1 flows into the heat source side drain pan 13 through the communication pipe 14 and is stored therein. Pump 1 while switched to the state
6, the condensed water W is supplied to the water evaporation material layer 11 to bring the water evaporation material layer 11 into a water-containing state.
This impregnated water W is exhausted by the heat of condensation generated by the heat source side heat exchanger 2 E
By evaporating into A, heat dissipation of the condensation heat in the heat source side heat exchanger 2 is promoted to enhance the cooling capacity.

On the other hand, in the heating operation, while the condensed water W generated in the heat source side heat exchanger 2 is received and stored in the heat source side drain pan 13, the switching valve 18 is switched to the temperature control side water supply state. By operating the pump 16 in this state, the condensed water W is supplied to the humidifying water-containing material layer 10 to bring the humidifying water-containing material layer 10 into a water-containing state, and the impregnated water W is heated by the temperature control heat exchanger 1. The supply air SA is humidified by being evaporated into the passing supply air SA.

Reference numeral 19 starts supply of make-up water to the heat source side drain pan 13 when the water level of the heat source side drain pan 13 falls below a predetermined lower limit water level LL based on the detection of the water level of the heat source side drain pan 13, and then the heat source. Side drain pan 13
Is an automatic make-up water valve that stops the make-up water supply when the water level is restored to a predetermined intermediate water level ML.

The communication pipe 14 is connected to the heat source side drain pan 13 at a position lower than the lower limit water level LL, so that the communication pipe 14 is kept in a water-sealing state so as to keep the temperature between the temperature control chamber 5 and the heat source chamber 8. The air is designed to prevent short circuits.

Also, the drain pipe 15 is lower than the lower limit water level LL,
In addition, at the position higher than the communication pipe 14, the heat source side drain pan 13
The inside is opened to keep the water sealed.

[Other Embodiments] Next, other embodiments will be listed.

The water evaporation material layer 11 for water evaporation may be attached to the air passage opening surface on the outlet side of the heat source side heat exchanger 2, and water is generated by the heat of condensation generated in the heat source side heat exchanger 2. As the water evaporating means for evaporating, instead of applying the water-containing material layer 11 as described above, various types are adopted, for example, a type of sprinkling or spraying water on the heat exchanger 2 for heat source is adopted. Can be adopted.

The humidifying means for humidifying the supply air SA heated by the heat of condensation generated in the temperature control heat exchanger 1 is of a type in which the impregnated water of the breathable water-containing material layer 10 as in the above-mentioned embodiment is evaporated into the passing air. Instead of the above, various humidifying methods such as a method of spraying water into the supply air SA and a method of heating water to evaporate it into the supply air SA can be adopted.

In the above-mentioned embodiment, the temperature control side drain pan 1
Although the receiving condensed water W of No. 2 is made to flow into the heat source side drain pan 13, conversely, the receiving condensed water W of the heat source side drain pan 13 is made to flow into the temperature adjusting side drain pan 12, so that Water evaporation means 1
1 and the constitution for supplying water to the humidifying means 10, the receiving condensed water W of each of the heat source side drain pan 13 and the temperature adjusting side drain pan 12 is caused to flow into a separate tank, and the water evaporation means 11 and the humidifying means are provided from this tank. A configuration may be adopted in which water is supplied to the means 10, or a configuration in which the water intake path of the pump 16 is switched between a state in which water is taken from the temperature adjustment side drain pan 12 and a state in which water is taken from the heat source side drain pan 13.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a device configuration diagram showing an embodiment.

[Explanation of Codes] 1 heat exchanger for temperature control 2 heat exchanger for heat source 10 humidifying means 11 water evaporating means 16 pump 17 condensed water transportation path 18 switching means OA outside air SA supply air W condensed water

Claims (1)

[Claims] 1. A heat source for causing a temperature control heat exchanger (1), which is a heat transfer target of air supply (SA) to an air conditioning target area, to function as a refrigerant evaporator, and which is an outside air (OA) heat transfer target. Operation in which the heat exchanger (2) functions as a refrigerant condenser, and the temperature control heat exchanger (1) functions as a refrigerant condenser, and the heat source heat exchanger (2) functions as a refrigerant evaporator. A heat pump type air conditioner configured to be switched to a heating operation that functions as a water vaporization means (11) for evaporating water by heat of condensation generated in the heat exchanger (2) for heat source, and the temperature control. For adjusting the temperature, a humidifying means (10) for humidifying the supply air (SA) heated by the heat of condensation generated in the heat exchanger (1) and a pump (16) for transporting the condensed water (W) of the heat exchanger are provided. The condensed water (W) generated in the heat exchanger (1) is used as water for evaporation. The water supply state of the heat source side supplied to the water evaporation means (11) by the pump (16) and the condensed water (W) generated in the heat exchanger for heat source (2) are used as humidification water by the pump (16) In the temperature control side water supply state to be supplied to the means (10),
Switching means (1) for switching the condensed water transportation path (17)
8) A heat pump type air conditioner provided with.