JPH0422175Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air-conditioning device that can simultaneously cool the floor side when cooling a room.

[Prior Art] A heating and cooling device is known that is configured to simultaneously perform floor heating or cooling when cooling or heating a room (Japanese Patent Application Laid-Open No. 75845/1983).

This known example is configured so that by connecting the fluid passage in the air-conditioning unit main body 1 and the fluid passage in the radiant surface 5, indoor heating and cooling can be performed simultaneously or independently.

[Problems with the Prior Art] Therefore, although the amount of heat on the radiating surface 5 side may be small in terms of comfort, there is a drawback that an excessive amount of heat is sent and comfort is impaired. For example, during hot water heating, the temperature of circulating hot water normally needs to be around 90°C, but when using floor heating, the temperature of hot water needs to be around 60°C, which is more comfortable as it provides a gentler warmth to the body.

In addition, it is not preferable in terms of energy conservation to circulate an excessive amount of heat during floor cooling/heating.

The purpose of this invention is to provide comfortable floor cooling and an energy-saving cooling system.

[Means to solve the problem] The configuration of the present invention is as follows.

A chilled water coil that combines the cooling refrigerant coil and fins built into the indoor unit is installed, and this chilled water coil and the floor cooling coil piped in the floor or mat are connected by a water cooling circuit with a circulation pump to cool the room. The air conditioner is configured to use this cold energy to cool the floor at the same time.

[Operation] When cooling operation starts, the refrigerant generated in the outdoor unit circulates within the refrigerant coil of the indoor unit, exchanges heat with indoor air, and cools the room. At the same time, since the chilled water coil is integrated with the fins of the refrigerant coil, the cold heat of the refrigerant in the refrigerant coil is transferred to the water in the chilled water coil, thereby cooling the water. The chilled water is circulated through the floor cooling coil by a circulation pump to provide floor cooling.

[Embodiment and its operation] The figure shows an embodiment of the present invention, where 1 is an outdoor unit and 2 is an indoor unit. The refrigerant is circulated through the refrigerant coil 4.

5 is a floor mat, and a floor cooling coil 6 is piped inside this floor mat 5.
The water inside is circulated by the circulation pump 9 via the chilled water circuit 8 to the chilled water coil 7 provided in combination with the fins of the refrigerant coil 4 in the indoor unit 2. The cooled heat is then released from the floor cooling coil 6.

Note that the floor cooling coil 6 may be directly piped into the floor of the room.

[Effects of the present invention] As described above, the present invention provides a portion of the cold energy of the refrigerant coil 4 in the indoor unit to the water circulating in the chilled water coil 7 via the fins, and this water is distributed in the floor cooling coil 6. The system circulates through the air and provides floor cooling at the same time.
Since the system is adopted, the following effects are achieved.

(1) The cold energy absorbed by the water from the floor side is released in the form of natural heat radiation, and since this cold energy is indirectly cooled by the indoor unit, a gentle cooling sensation can be obtained.

(2) Since the cold heat for floor cooling is taken indirectly from the refrigerant coil, there is no need to provide a separate heat source device, the configuration and control mechanism are simple, and since no separate fuel is required, it is effective in terms of energy conservation.

(3) By using water to transport cold heat for floor cooling and adjusting the amount of cold heat transported by the heat exchange rate of the indoor unit, it is possible to perform comfortable floor cooling at a temperature that suits the purpose.

[Brief explanation of the drawing]

The figure is an explanatory diagram of a cooling device according to the present invention. 1... Outdoor unit, 2... Indoor unit, 3... Refrigerant circuit, 4... Refrigerant coil, 5... Floor mat, 6...
Floor cooling coil, 7...chilled water coil, 8...chilled water circuit, 9...circulation pump.

Claims (1)

[Scope of utility model registration request] A chilled water coil that combines the cooling refrigerant coil and fins built into the indoor unit is installed, and this chilled water coil and the floor cooling coil piped in the floor or mat are connected by a water cooling circuit with a circulation pump to cool the room. The air conditioner is configured to use this cold energy to cool the floor at the same time.