JP2000018764A - Cooling/warming/hot water supplying apparatus utilizing ventilation exhaust heat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize ventilation exhaust heat as heat source for heat pump when the outer air temperature is high by a structure wherein a ventilation exhaust heat duct is introduced into the outdoor unit of an existing air conditioner, an external cover and an underfloor cover are provided, and an outdoor unit is surrounded by a heat insulated air chamber while exposing the heat exhausting part to the outside. SOLUTION: When the outer air temperature is low, ventilation exhaust heat is taken into an air chamber 33 as the heat source for a heat pump. Alternate operation or concurrent operation of heating and hot water supply is performed by switching the heating mode and hot water supply mode for respective regulation and branch valves. At the time of cooling operation, hot water is produced using a heat exchanger 9 in a heat insulated hot water supply tank 8 as a radiator. Condensed refrigerant is returned through the branch regulation valves and the refrigerant pipe back to an original circuit and chill is fed from an indoor unit. When the outer air increases, an underfloor cover 35 is opened and stabilized low temperature air is taken in from under the floor thus ensuring most efficient operation of air conditioner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for performing cooling, heating, hot water supply, and ventilation by utilizing ventilation exhaust heat.

[0002]

2. Description of the Related Art There has been no apparatus for cooling, heating, hot water supply, and ventilation utilizing compact ventilation exhaust heat for ordinary households.

[0003]

[Problems to be solved by the invention] When the outside temperature is low,
Not only was the heating efficiency reduced, but the hot water supply heat source was insufficient and heating and hot water could not be sufficiently provided.

[0004]

[Object of the present invention] The present invention utilizes a waste heat of ventilation as a heat source for a heat pump when the outside air temperature is low.
The purpose is to provide cooling, heating, hot water supply, and ventilation functions.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an outdoor unit of a known existing air conditioner, which is provided with a heat exhaust duct 30 for ventilation from a room.
There is an external opening / closing lid 2 and an underfloor opening / closing lid 35, and a structure in which a heat-dissipating portion of an outdoor unit is exposed to the outside and enclosed by an air chamber 33 insulated and kept warm. The ventilation heat exhaust duct 30 is provided with a manual and automatic air volume adjusting device 31. The opening / closing lid 2 and the underfloor opening / closing lid 35 have manual and automatic opening / closing devices. The refrigerant compressed by the compressor 1 is a refrigerant pipe 3 which is a known refrigerant circuit.
4, a structure that is branched by a branch adjusting valve 7 attached in front of the condenser 6 through a branch adjusting valve 5 and a refrigerant pipe 3, and is sent to a well-known heat insulating and heat-insulating, hot water-holding hot water tank 8 capable of supplying water. And A well-known heat exchanger 9 is mounted in the warm water tank 8. The branch adjustment valve 10 is attached before the heat exchanger 9, and the refrigerant pipe 25, the branch adjustment valve 13, the refrigerant pipe 14, the branch adjustment valve 12, the refrigerant pipe 2
The structure is such that the refrigerant is sent to the indoor unit via 9. The refrigerant pipe 11 coming out of the heat exchanger 9 in the warm water tank 8 is branched from the branch adjustment valve 10 in front of the heat exchanger 9 via the branch adjustment valve 24 and the refrigerant pipe 28, and the refrigerant pipe 25 and the branch adjustment. The circuit structure is such that the refrigerant flows into the indoor unit by merging with the branch adjustment 12 communicating with the valve 13 and the refrigerant pipe 14. Further, a branch adjustment valve 15 is attached in the middle of the reverse circuit of the refrigerant pipe connecting the indoor unit and the compressor 1. Each branch adjustment valve, the opening / closing lid 2 of the air chamber 33, and the air volume adjusting device 31 of the ventilation heat exhaust duct 30 sense the indoor, outdoor, and tank hot water temperatures with a known temperature sensor and are controlled by a known control device. . The present invention is configured as described above.

[0006]

The present invention has the structure described above. Therefore, when the temperature of the outside air is low, the ventilation exhaust heat can be taken into the air chamber 33 to be used as a heat source of the heat pump. By performing the adjustments and the switching adjustment between the heating mode and the hot water supply mode of the branch valve, mutual operation and simultaneous operation of heating and hot water supply can be performed. When performing the cooling operation, the heat exchanger 9 in the warm water tank 8 is used as a radiator, and hot water is produced by the heat. The refrigerant condensed by making hot water returns to the original circuit via the branching control valve and the refrigerant pipe, and cool air is sent in the indoor unit. When the outside air temperature rises, the underfloor opening / closing lid 35 is opened to draw in the low-temperature stable underfloor air, so that the most efficient air conditioner operation can be performed. Like outdoor units of existing air conditioners,
There is also an effect of preventing a decrease in efficiency due to a high-heat short circuit radiated from the outdoor unit itself. Next, the refrigerant cycle in each mode is shown in a chart. [1] During cooling 1-34-5-3-7-4-6-27-13-14-12-29-1 6-18-19-20-21-15-15-22-5-3-7- 23-1 [2] Cooling water supply 1-34-5-3-7-10-9-11-24-28-12-29-16-16-18-19-20-21-15-15-22-5-3- 7-23-1 [3] During heating 1-34-5-22-15-21-20-20-19-17-16-29- 12-14-13-27-6-4-7-23-1 [ 4] Heating hot water supply

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has the following embodiments.

<1> Embodiment of the present invention in combination with a ventilation system including auxiliary ventilation.

<2> Embodiment of the present invention having a plurality of indoor units.

<3> Embodiment of the present invention in combination with a hot water supply system.

<4> An embodiment of the present invention in which the heat retaining hot water supply tank 8 and the air chamber 33 are integrated.

[0012]

The present invention has the following effects. [1] Contribute to the leveling of power demand by making hot water during the time when electricity is surplus, and usually replenishing the shortage. [2] Inevitably exhaust air due to the operation of the outdoor unit of the air conditioner,
Ventilation is provided. [3] Even in cold regions, since the ventilation exhaust heat is abundant, the defrosting function does not operate, and the hot water supply operation and sufficient heating can be performed with the surplus heating. [4] Even in warm regions, hot water is automatically produced by the exhaust heat of the condensing action in cooling. Further, since the ambient temperature radiated from the outdoor unit itself is not sucked, the condensation efficiency is improved and energy is saved. [5] Since all of the cooling, heating, hot water supply, and ventilation functions required for a house are performed by a single device and with extremely few heat transfer equipment, the energy consumption efficiency of the entire device is dramatically increased, and the energy saving effect is achieved. Is enormous. [6] Since low-temperature air under the floor is used, the air-conditioning efficiency in midsummer is improved and the heat island phenomenon is suppressed.

[0013]

[Brief description of the drawings]

FIG. 1 is a conceptual cross-sectional view of the structure of the present invention.

[0014]

[Explanation of symbols]

1 Compressor 2 Opening / closing lid 3 Refrigerant pipe 4 Refrigerant pipe 5 Branch adjusting valve 6 Condenser 7 Branch adjusting valve 8 Heated hot water supply tank 9 Hot water heat exchanger 10 Branch adjusting valve 11 Refrigerant pipe 12 Branch adjusting valve 13 Branch adjusting valve 1
4 refrigerant pipe 15 branch adjustment valve 16 branch adjustment valve 17 refrigerant pipe 18 expansion valve 19 branch adjustment valve 20 radiator
21 refrigerant pipe 22 refrigerant pipe 23 refrigerant pipe 2
4 branch adjustment valve 25 refrigerant pipe 26 refrigerant pipe 27
Refrigerant pipe 28 Refrigerant pipe 29 Refrigerant pipe 30 Exhaust heat duct for ventilation 31 Air volume adjusting device 32 Heat insulation 33 Air chamber 34 Refrigerant pipe 35 Opening / closing lid for underfloor

Claims (1)

[Claims] A system for making hot water by utilizing the exhaust heat of cooling and the residual heat of heating is a known fact. In the present invention, the indoor unit and the outdoor unit of the air conditioner, the hot water tank 8,
The heat exchanger 9 in the tank and the refrigerant circuit including the respective branch adjusting valves are assembled by a member configuration using a known technique. The meaning of the present invention is to utilize the ventilation exhaust heat and the low-floor low-temperature heat of the house. A known air conditioner outdoor unit has an external opening / closing lid 2 that draws in the ventilation / heat exhaust duct 30 from the room and takes in the outside air, and an underfloor opening / closing lid 35 that communicates with the underfloor.
At 3, the exhaust unit of the outdoor unit is exposed to the outside and surrounded. The ventilation heat exhaust duct 30 is provided with a manual and automatic air volume adjusting device 31. The external opening / closing lid 2 and the underfloor opening / closing lid 35 have manual and automatic opening / closing devices. The refrigerant circuit including the indoor unit and the outdoor unit of the air conditioner, the warm water tank 8, the heat exchanger 9 in the tank, and each branch adjustment valve is already assembled with a member configuration by a known technique. Each branch adjusting valve, the external opening / closing lid 2 of the air chamber 33, the underfloor opening / closing lid 35, and the air volume adjusting device 31 of the ventilation heat exhaust duct 30
Is controlled by a known control device by sensing an indoor unit, an outdoor unit, other necessary parts, and the temperature of hot water in the tank with a known temperature sensor. The present invention provides a ventilation / exhaust-heat-based cooling / heating hot-water supply device characterized by the above-mentioned known technology and a configuration for taking in air mainly through the air chamber 33.