JPS59150275A - Heat pump type floor heating apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a heat pump type floor heating device for heating and cooling the living room of a house, and provides a heat pump type floor heating device that provides comfortable heating and cooling. It is something.

Conventional Structure and Problems Conventionally, in this type of heat pump floor heating system, as shown in Figure 1, the outdoor unit (A) is installed outside the building, and the indoor unit (B) is installed on the wall of the living room. Heat radiators C were installed on surfaces, etc., and each was connected with two pipes, using a total of four pipes.

Outdoor unit A includes a compressor, an outdoor heat exchanger, a four-way valve, a capillary tube, etc. During floor heating, the refrigerant discharged from the compressor passes through the four-way valve and through the connecting pipes to radiate heat. The heat enters the container C, radiates heat, returns to the outdoor unit A through another return connection pipe, and returns to the capillary tube, four-way valve, and compressor, forming a series of refrigeration cycles. However, in this type of conventional system, heat is radiated only by the radiator C installed on the floor, etc., and as can be seen from the broken contour line of the Mollier diagram in Figure 2, the heat is radiated from the gas region at point A. Since heat is radiated up to the gas-liquid mixing area at point B, there is a temperature difference of about 40°C between the inlet and outlet of radiator C, and the floor in the living room is very high. The temperature was uneven, with some places being too low, making it uncomfortable. In order to eliminate this temperature unevenness, it is necessary to complicate the piping inside the radiator itself or use expensive and special materials, which increases costs and requires maintenance during service. It was difficult.

Since the outdoor unit is located outside, it requires space to install the outdoor unit, and in worse cases, it may be installed on the roof, causing damage to the roof tiles, or requiring extremely long connecting pipes. This has the disadvantage of reducing heating and cooling capacity. In addition, in conventional heat pump type floor heating systems, even when heating starts, the radiator itself is made of a material with a very large heat capacity, such as an insulating material.
There was a drawback that it took a considerable amount of time after turning on the operation switch until the heating sensation was felt.

OBJECTS OF THE INVENTION The present invention eliminates the unpleasant heating and cooling problems found in the conventional heat pump type floor heating system, and provides a system with less temperature unevenness.
This shortens the start-up time during heating and provides a comfortable feeling of heating.

Structure of the Invention The heat pump type floor heating device of the present invention connects a compressor, a four-way valve, an outdoor heat exchanger, a first check valve, and an indoor heat exchanger in an annular manner, and has a heat dissipation system installed on the floor or the like. One end of the series circuit of the heat exchanger and the second check valve is connected to the outdoor heat exchanger and the first end.
The other end is connected between the first check valve and the room smoke exchanger, and the first check valve is connected to the radiator during cooling. This is intended to prevent heating, thereby providing a comfortable feeling of heating.

DESCRIPTION OF THE EMBODIMENTS A heat pump type floor heating system according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG.

In Fig. 2, 1 is a heat pump unit, and the heat pump unit 1 includes a compressor 2, a four-way valve 3,
, outdoor heat exchanger 4, cooling/heating common capillary tube 5,
A cooling capillary tube 6, a first check valve 7, an indoor heat exchanger 8, a second check valve 9, connection ports 10, 11, an indoor fan 12'', an outdoor fan 13, and a connection port. 10
．． 11 is connected to a heat radiator 16 provided on the floor or the like via connecting pipes 14 and 15.

FIG. 4 is a simplified installation diagram, in which the heat pump unit 1 is installed on a wall, window, etc., and connected to a radiator 16 through connection pipes 14, 15.

Next, the effect will be explained.

First, during heating, the refrigerant discharged from the compressor 2 in the heat pump unit 1 passes through the four-way valve 3, the indoor heat exchanger 10, and then from the connection port 11 to the connection pipe 16, as shown by the solid arrow. The heat enters a radiator 16 installed on the floor, etc., where it radiates heat, and then passes through the connection pipe 14 and connection port 10, returns to the heat pump unit 1, and connects the second check valve 9 and the cooling/heating common capillary tube 6. After passing through, it absorbs heat in the outdoor heat exchanger 4 and returns to the four-way valve 3 and compressor 2.

At this time, since the indoor fan 12 is stopped, the indoor heat exchanger 8 radiates heat by natural convection from point A in the gas area on the Mollier diagram in Figure 2 to point C where it enters the gas-liquid mixing area. However, a heat radiator 16 provided on the floor or the like radiates heat from the point B1 in the gas-liquid mixing area. That is, these points C, D,
Since B is a gas-liquid mixing region, as can be seen from the broken contour line, if the pressure is constant, the temperature is also constant, so the temperatures at this point, C and H, are almost the same. Therefore, there is no temperature difference between the inlet and the outlet of the radiator 16, so that the floor surface in the living room has a uniform temperature, and comfortable floor heating can be performed.

When the heating is about to start up, by rotating the indoor fan 12 with a manual switch (not shown), the room temperature can be raised quickly and the feeling of heating can be quickly and easily obtained.

-t, since the heat pump unit 1 has an indoor unit and an outdoor unit in a single-piece shape, it requires less installation space outside the room, and the length of the connecting pipes 14 and 15 remains constant. Does not impair heating ability.

Next, during cooling, the refrigerant flows in the direction of the broken line arrow shown in FIG. 3, and the indoor fan 12 performs cooling operation.

During this cooling, there is a check valve 9 on the upstream side of the radiator 16 installed on the floor, etc., and the downstream side of the cut is a low-pressure pipe, so the radiator 16 becomes an evaporator and cools the air. If the problem occurs, the refrigerant may accumulate and reduce the cooling capacity.
The compressor will not be damaged by running out of circulating refrigerant.

Effects of the Invention The heat pump type floor heating device of the present invention is an integrated type including a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a first check valve, a second check valve, etc. Connect the heat pump unit and the radiator installed on the floor etc. using connection piping,
the compressor, a four-way valve, an outdoor heat exchanger, a first check valve,
The indoor heat exchanger is connected to the howler, and one end of the series circuit of the radiator and the second check valve provided on the floor etc. is connected to the outdoor heat exchanger and the first check valve. and the other shoulder of the series circuit is connected between the first check valve and the indoor heat exchanger, and the first check valve connects the outdoor heat exchanger to and the second check valve is a blocking side, and the second check valve is
During cooling, the radiator installed on the floor etc. is used as the blocking side, and during cooling, the room is cooled by the cold air of the fan on the indoor side,
When heating is still in progress, floor heating is performed using a radiator installed on the floor, etc., and operation can be performed while maintaining an appropriate amount of refrigerant circulation.
It has the advantage of providing comfortable heating and cooling to keep your head cold and feet warm, and also eliminates the need for an outdoor unit and space for its installation.

[Brief explanation of the drawing]

Fig. 1 is an installation diagram of a conventional heat pump type floor heating system, Fig. 2 is a Mollier diagram, Fig. 3 is a refrigeration cycle diagram of a heat pump type floor heating system according to an embodiment of the present invention, and Fig. 4
The figure is an installation diagram of the heat pump floor heating system. 1...Heat pump unit, 2...
Compressor, 3...Four-way valve, 4...Outdoor heat exchanger, 7...First check valve, 8...
- Indoor heat exchanger, 9...Second check valve, 14
．． 15... Connection piping, 16... Heat radiator installed on the floor, etc. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure @ Figure 2 Enkuru °−

Claims (1)

[Claims] An integrated heat pump unit including a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a first check valve, a second check valve, etc., and a radiator installed on the floor etc. are connected by connecting piping, the compressor, the four-way valve, the outdoor heat exchanger, the first check valve, and the indoor heat exchanger are connected in a circular manner, and the radiator and One end of the series circuit of the second check valve is connected between the outdoor heat exchanger and the first check valve, and the other end of the series circuit is connected to the first check valve. and the indoor heat exchanger, the first
In the heat pump type floor heating device, the check valve has the outdoor heat exchanger as the blocking side, and the second check valve has the radiator provided on the floor surface or the like as the blocking side during cooling.