JPH0517455U - heat pump - Google Patents

Abstract

(57) [Abstract] [Purpose] In a heat pump, the exhaust heat discharged from the air heat exchanger that functions as a condenser during cooling operation is not released to the atmosphere as it is, but the amount of heat it holds is used for drying laundry or drying under the floor. Make effective use of. [Structure] An air heat exchanger 6 with a blower fan 7 that uses outside air as a heat source and functions as a condenser in a cooling operation cycle.
A duct 12 is provided for collecting the exhaust gas a from the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat pump that is used, for example, as a small air conditioner for home use and that includes an air heat exchanger having a blower fan.

[0002]

[Prior Art]

 As is well known, this type of heat pump condenses the refrigerant gas whose temperature and pressure have been increased by a compressor by heat exchange in an air heat exchanger using external air as a heat source to form a low-temperature, high-pressure liquid refrigerant. After passing this through a capillary tube to vaporize and reduce the pressure, the indoor air is cooled by heat exchange in the evaporator that uses the indoor air as the heat source, and the refrigerant gas becomes low pressure due to heat exchange in this evaporator. The specified cooling operation is performed by a cycle in which the air is recirculated to the compressor again to increase the temperature and pressure.

[0003]

[Problems to be solved by the device]

 By the way, in the heat pump of the above operation cycle, the temperature of the air heat exchanger, which functions as a condenser during the heat storage operation at night or during the daytime cooling operation, is about 3 to 10 ° C higher than the outside air temperature. Exhaust gas will be discharged, but in the past, the heat of exhaust gas was directly released to the atmosphere, and the same amount of heat as the amount of heat of evaporation was wasted.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a heat pump that can effectively use the heat of the exhaust gas from the air heat exchanger.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a heat pump according to the present invention comprises a duct for collecting exhaust gas from an air heat exchanger having a blower fan.

Further, the duct may be configured to house the entire heat pump unit or may be installed in an underfloor space, and further, the duct may accommodate a drying object such as laundry to be dried. May be provided.

[0007]

[Action]

 According to the present invention, the exhaust gas discharged from the air heat exchanger functioning as a condenser during the heat storage operation at night or the cooling operation during the daytime is collected in the duct. It is possible to effectively utilize the heat quantity of exhaust gas by guiding it to the drying room or drying floor for laundry.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are respectively an external view and a principle configurational view schematically showing a heat pump according to an embodiment of the present invention.

In FIGS. 1 and 2, 1 is a base, 5 is a compressor fixed to the base 1, 6 is an air heat exchanger arranged on the downstream side of the compressor 5, and the outside air is used as a heat source. Thus, it has the blower fan 7 and functions as a condenser in the cooling operation cycle. 8 is a capillary tube arranged on the downstream side of the air heat exchanger 6, 9 is an evaporator, which has a cooling water inlet 9a and a cooling water outlet 9b. 10 is an accumulator. The heat pump unit 11 is configured by the above components.

To the exhaust port side of the air heat exchanger 6, one end of a duct 12 for collecting the exhaust gas a having a temperature higher than the outside air temperature is connected, and the other end of the duct 12 is, for example, as shown in FIG. As shown in FIG. 4 and FIG. 4, it is connected to an underfloor drying chamber 13 provided in an underfloor space under the floor 15. Reference numeral 14 denotes an opening / closing lid provided on the upper surface side of the underfloor drying chamber 13. Further, the side wall of the underfloor drying chamber 13 is composed of a wire mesh 16, and the exhaust gas a is sent to the underfloor drying chamber 13 to perform the drying operation, and the exhaust gas a is discharged from the exhaust port 14 leading to the outside from the underfloor space. It is designed to be done. The wire net 16 also has a function of preventing invasion of insects and rods.

According to this structure, the low-temperature low-pressure refrigerant gas is compressed by the compressor 5 to be high-temperature high-pressure, and then reaches the air heat exchanger 6 as a condenser, where the blower fan 7 is placed. Is exchanged with the outside air (condensation) to become a low-temperature, high-pressure liquid refrigerant. Then, the liquefied refrigerant is passed through the capillary tube 8 or the like to reduce its pressure and then sent to the evaporator 9. The evaporator 9 can cool the room by exchanging heat between the room air and the refrigerant gas. The refrigerant gas discharged from the evaporator 9 is returned to the compressor 5 again via the accumulator 10.

Here, from the exhaust port of the air heat exchanger 6, the exhaust fan a having a temperature of about 3 to 10 ° C. higher than the outside air temperature is exhausted by the blower fan 7 and recovered in the duct 12 and recovered. Exhaust gas a is fed into the underfloor drying chamber 13 through the duct 12. Therefore, if the objects to be dried M such as laundry are stored in the underfloor drying chamber 13, they are dried by the amount of heat of the exhaust gas a, and the exhaust gas that has already been dried is discharged from the underfloor drying chamber 13 to the wire mesh. By passing through 16 and being discharged into the underfloor space, a dehumidifying function under the floor is also exerted. In particular, when the laundry is difficult to dry, such as during the rainy season, and the heat pump performs dehumidifying operation, it is extremely useful that the heat of the exhaust a can be used for drying the laundry.

FIG. 5 shows an example in which the present invention is applied to a heat pump in which a heat pump unit 11 as a refrigeration cycle and a heat pump unit 21 as a heat storage cycle are combined.

The heat pump unit 21 includes the evaporator 9, the ice heat storage tank 22, and the pump 23 of the heat pump unit 11 as a refrigeration cycle, which are interposed in this order in the refrigerant circulation path. In this heat pump unit 21, the refrigerant is sent to the evaporator 9 by the operation of the pump 22, the evaporator 9 removes heat from the heat pump unit 11, and the absorbed heat is stored in the ice heat storage tank 22. The cycle in which the refrigerant discharged from 22 returns to the pump 23 is repeated. In this heat pump unit 21, if the fan coil unit 24 is installed in the refrigerant circulation path, the cold heat of the refrigerant can be used for air conditioning such as cooling. In the illustrated example, the fan coil unit 24 is installed in the refrigerant circulation path from the evaporator 9 to the ice heat storage tank 22 so that the cold heat taken from the evaporator 9 by the refrigerant is used for air conditioning. If the unit 24 is installed in the refrigerant circulation path 23 from the ice heat storage tank 22 to the pump 23, the cold heat taken from the ice heat storage tank 22 by the refrigerant can be used for air conditioning.

In such a heat pump, the heat pump unit 11 as a refrigeration cycle is a heat source unit H, and the heat pump unit 11 as a heat storage cycle is an air conditioner C. Then, as in the case described with reference to FIGS. 1 and 2, one end of the duct 12 is connected to the exhaust port side of the air heat exchanger 6, and the other end of the duct 12 is connected to the underfloor drying chamber 13. Has been done.

In the embodiment of FIG. 5, the underfloor drying chamber 13 can accommodate a container 30 having good air permeability such as a net basket. Therefore, if the container 30 in which the drying target M such as laundry is suspended is stored in the underfloor drying chamber 13, the drying target M can be dried by the heat of the exhaust air of the air heat exchanger 6. Is. As the container 30, for example, a flat net basket as shown in FIG. 7 can be used. When such a net basket is used as the container 30, as shown in FIG. Even if the openings are arranged in the underfloor drying chamber 13 in a direction that crosses the exhaust gas flow direction, the plurality of containers 30 may be opened in a position that crosses the exhaust gas flow direction and a space may be formed in the exhaust gas flow direction. It may be arranged in the underfloor drying chamber 13. In many cases, the heat pump unit 21 as the air conditioner C performs heat storage operation by using inexpensive nighttime electric power, and releases the stored cold heat from the fan coil unit 24 during the daytime to perform indoor air conditioning. In that case, the drying target M can be dried at night by utilizing the heat of the exhaust gas a of the air heat exchanger 6 during nighttime heat storage.

FIG. 6 is a sectional view showing another example of use of the exhaust gas a collected by the duct 12 according to another embodiment of the present invention. In this example, the other end of the duct 12 is connected to the ondle 42 in the drying bed 41 so that the drying bed 41 is warmed by the heat of the exhaust gas a. In this case, a T-shaped partition plate 43, which also serves as a mounting table for the object to be dried M, is provided below the drying floor 41 so as to face it, so that the exhaust gas a sent from the duct 12 is dried. The floor 41 can be guided so as to efficiently hit the floor 41. Further, in order to make the flow of the exhaust gas a smooth, a blower fan may be installed on the upstream side of the drying bed 41, or a suction fan may be installed on the downstream side, if necessary.

As a method of using the exhaust gas a, it may be used for heating and drying laundry or futon, or dehumidifying indoors during rainy season.

Further, in the above embodiment, the duct 12 is connected only to the exhaust port side of the air heat exchanger 6, but the entire heat pump body 11 may be housed in the duct 12. Further, a similar mechanism may collect cold exhaust during heating in winter. Further, in the above-mentioned embodiment, the underfloor drying chamber 13 is a type in which the drying chamber is provided under the floor, but the drying chamber can be installed in a place other than under the floor.

[0020]

[Effect of the device]

 As described above, according to the present invention, the high-temperature exhaust air discharged from the air heat exchanger during cooling is not discharged to the atmosphere as it is, but is collected in a duct to wash the exhaust heat quantity that is almost equal to the evaporation quantity. It can be effectively used for drying things and floor drying. This makes it possible to reduce heat energy consumption in, for example, ordinary households. In particular, it has the excellent effect that the heat of the exhaust air during the dehumidifying operation of the heat pump can be used for drying during the rainy season when it is difficult to dry the laundry.

[Brief description of drawings]

FIG. 1 is an external view schematically showing a heat pump according to an embodiment of the present invention.

FIG. 2 is a principle configuration diagram of FIG.

FIG. 3 is an external view showing a cutaway view of a part of a usage example of recovery exhaust.

FIG. 4 is a cross-sectional view of a main part showing an example of utilization of recovery exhaust.

FIG. 5 is a principle configuration diagram of another embodiment.

FIG. 6 is a cross-sectional view of a main part showing another example of utilization of recovery exhaust.

FIG. 7 is a schematic perspective view showing a usage example of a container.

[Explanation of symbols]

 5 Compressor 6 Air Heat Exchanger 7 Blower Fan 11 Heat Pump Main Body 12 Exhaust Recovery Duct 13 Underfloor Drying Room (Drying Room) M Drying Target

Claims (4)

[Scope of utility model registration request] 1. A heat pump comprising a duct for collecting exhaust gas from an air heat exchanger having a blower fan. 2. The heat pump according to claim 1, wherein the duct is configured to house the entire heat pump unit. 3. The heat pump according to claim 1, wherein the duct is installed in an underfloor space. 4. The heat pump according to claim 1, wherein the duct is provided with a drying chamber capable of accommodating an object to be dried such as laundry.