JPS58133545A - Heat pump type floor heating apparatus - Google Patents

Abstract

PURPOSE:To make it possible to perform a room heating operation which is comfortable and healthy to the human body by a method wherein the operation of a blower of an indoor cooling unit is controlled by an indoor temperature detecting device at the time of performing the room heating operation and the indoor cooling unit and a floor heating unit are operated side by side. CONSTITUTION:A cooling medium circuit is formed of the floor heating unit A having a heat exchanger 1 for floor heating, the indoor cooling unit B having a heat exchanger 2 for cooling and the blower 3 and an outdoor unit C having a heat exchanger 6. Further, the indoor temperature detecting device 11 and an electrical circuit for controlling the operation of the blower 3 in response to the signal from the detecting device 11 are provided and the units A and B are operated side by side. Thus, with the above structure, it is possible to perform a heat cooling and foot warming room heating operation which is pleasant and healthy to one's body such that while one's feet are warmed by the room heating operation, one's heat is cooled by adjusting the temperature around one's heat to a predetermined value. Further, it is possible to improve the efficiency of the entire system by collecting the heat in the space which does not serve for warming one's body and utilizing it for the radiation of heat from the floor surface.

Description

[Detailed description of the invention] The present invention relates to a heat pump type floor heating device,
One of the objectives is to improve comfort during heating, and another objective is to improve the efficiency of the system by recovering the amount of heat that is not effectively used in the living space.

In general, the heating method that cools the head and heats the feet is considered to be the most comfortable heating method, and floor heating has a nearly uniform temperature distribution, so heating is achieved by forced convection, where the ceiling is hot and the floor is cold. It is said to be closer to heating with a cold head and warm feet. For this reason, various heat pump floor heating devices have been proposed.

One conventional example of this is the configuration shown in Japanese Utility Model Publication No. 55-34546. The configuration of this device is that during heating, both the indoor heat exchanger and the floor heat exchanger are connected to the condenser (
In other words, it is used as a heat sink.

In a floor heating system with this configuration, as mentioned above, the indoor temperature distribution during heating is extremely uniform, so the temperature of the human body in the same environment is almost the same, and in such an atmosphere, the temperature of the head The temperature becomes relatively too high, causing physical and health disadvantages such as radiant facial flushing and drowsiness.

Also, during heating, spaces that are not used for heating the human body, such as ceilings and walls, are also heated. Most of the heat in these spaces leaks to the outside, is wasted, and is stored away.
It had the disadvantage of low efficiency.

The present invention improves the above-mentioned drawbacks of the conventional systems by controlling the operation of the air blower of the indoor cooling unit using an indoor temperature detection device during heating operation, and by operating the indoor cooling unit and the floor heating unit in combination.

Hereinafter, the present invention will be described with reference to the accompanying drawings showing one embodiment thereof.

FIG. 1 is a schematic diagram of a heat pump type floor heating device that is an embodiment of the present invention.

In Figure 1, 2, M is a floor heating unit, B is an indoor cooling unit installed near the ceiling of the room, and the direction in which the cool air is blown is set at or above the head of the human body. C is an outdoor unit. 1 is a floor heat exchanger installed on the indoor floor, 2 is a heat exchanger for indoor cooling, 3 is a blower, 4 is a compressor, and 5 is a four-way switching valve. During heating, as shown by the solid arrow, Also, during cooling, the refrigerant is switched to flow as indicated by the dashed-dotted line arrow. 6 is an indoor heat exchanger, 7 is a capillary tube for both cooling and heating, and 8 is provided to drive the flow of refrigerant from the indoor cooling heat exchanger 2 to the floor heat exchanger 1. A check valve, 9 is a gear pillar tube for heating, 10 is a check valve provided in a conduit that bypasses the check valve 8, the capillary tube for heating 9, and the floor heat exchanger 1, It is provided to allow refrigerant to flow from the indoor cooling heat exchanger 2 toward the four-way switching valve 6. 11 is an indoor temperature detection device consisting of a microcomputer, etc., which is located near the indoor cooling unit H;
It is provided at a position where the air temperature on the suction side of the blower device 3 of the indoor cooling unit) B can be detected. The indoor temperature detection device 11 of the f-octopus has a set temperature T inside, and if the detected temperature is above the set temperature T, the internal electric circuit is short-circuited, and if it is below the set temperature T, it is opened. Furthermore, 12 is an operation control device for the blower 3, compressor 4, four-way switching valve 5, etc. Next, the operation control electric circuit of this embodiment will be explained with reference to FIG. Components that are the same as those in FIG. 1 are given the same numbers and their explanation will be omitted.

In the figure, 13 is a power supply, and 14 is a power switch, which is turned on during system operation. Reference numeral 16 denotes a heating/cooling changeover switch, which is turned on during heating operation. Reference numeral 16 denotes an electromagnetic switch, and the indoor temperature detecting device 11 and a circuit for shorting it are connected to the contacts thereof. This electromagnetic switch 1
6 is energized during heating operation, thereby activating the room temperature detection device 11 and opening its short circuit.

The operation of the above configuration will now be explained.

First, heating operation will be explained. When the power switch 142 and the cooling/heating changeover switch 16 are turned on, the compressor 4
, the four-way switching valve 5, and the electromagnetic switch 16 are energized. When the compressor 4 is operated, the high-temperature, high-pressure refrigerant discharged from the compressor 4 is transferred to the floor heat exchanger via the four-way switching valve 5, as indicated by the solid arrow in FIG. The heat is radiated and condensed in the heating capillary tube 9, and the pressure is reduced to an intermediate pressure capable of cooling the room. The refrigerant circuit is further reduced in pressure by the cooling and heating gear pillar tube, becomes low temperature and low pressure, evaporates in the outdoor heat exchanger 6, and returns to the compressor 4 via the four-way switching valve 6.

On the other hand, since the electromagnetic switch 16 is energized, the operation of the air blower 3 is controlled by the room temperature detection device 11.
I will be treated. When the temperature detected by the indoor temperature detection device 11 is lower than the internal set temperature T, the blower device 3 is not energized, and accordingly, the indoor cooling unit) B does not perform cooling by forced convection.

By the way, this internal set temperature T is set by experiment or theory to the temperature at the position of the room temperature detection device 11 when the temperature around the human head becomes comfortable during floor heating. From this, if the temperature detected by the room temperature detection device 11 is lower than the set temperature T, the room temperature is too low.4 Indoor cooling unit) Cooling from B will prevent the room temperature from rising, which will have the opposite effect. Therefore, it is necessary to stop cooling the indoor air conditioner. Conversely, the temperature detected by the indoor temperature detector 11 is the internal set temperature Ti.
If the temperature is too high, the blower device 3 is energized, and cooling is performed by forced convection from the indoor cooling unit (B) to lower the temperature around the human head.

By stopping the operation of the blower device 3 in this way, the temperature around the human head is maintained at a comfortable temperature during floor heating, and the heating of the head and feet is prevented without causing hot flashes on the face or drowsiness. It's good for your health because it's made with food. In addition, since cooling is not performed when the temperature around the indoor cooling unit (B) is below a certain temperature, it is possible to eliminate the disturbance of room temperature rise when cooling is performed continuously at a low room temperature such as when the system is started up. In addition, when heating the ceiling, walls, etc., the amount of heat that is not effectively used for heating the human body is recovered by the indoor cooling heat exchanger 2 and can be indirectly used for the floor.
This has the effect of significantly improving the efficiency of the entire system.

Next, cooling operation will be explained.

During cooling operation, the cooling/heating selector switch 15 is opened and the four-way selector valve 6 is switched to flow the refrigerant as indicated by the dashed-dotted arrow in FIG. Since the electromagnetic switch 16 is also not energized, the blower device 3 is operated without depending on the room temperature detection device 11. 11 When the blower device 3 and compressor 4 shown on the right are operated, the high-temperature, high-temperature refrigerant discharged from the compressor 4 is condensed in the indoor heat exchanger 6 via the four-way switching valve, The pressure is reduced in the cooling/heating capillary tube 7 to a low temperature and pressure, evaporates in the indoor cooling heat exchanger 2, and returns to the compressor 4 via the check valve 10 and the four-way switching valve 5. A cooling circuit is configured.

On the other hand, since the refrigerant does not flow into the floor heat exchanger 1 due to the check valve 8, it is not cooled and no dew condensation occurs. Furthermore, refrigerant does not accumulate.

In the previous embodiment, the indoor temperature detection device 11 had one set temperature T, but 1. By making this set temperature variable, it is possible to more precisely adjust the air conditioning of the human head to suit the inner temperature state and the preferences of each person. moreover,
When the indoor cooling unit is not installed near the ceiling and is placed on the floor, the direction of the cold air and the installation of the indoor temperature detection device 11 can be set at or above the head of the room to achieve the effect of keeping the head cold and feet warm. Furthermore, since the heat that is not used for heating the human body surrounding the indoor unit is also recovered, the efficiency of the entire system will not be reduced.

As is clear from the above description, the heat pump type floor heating device of the present invention includes a floor heating unit having a floor heat exchanger, an indoor cooling unit having a cooling heat exchanger and a blower, and an outdoor unit having a heat exchanger. A refrigerant circulation circuit is configured, and further an indoor temperature detection device is provided, and an electric circuit is provided for controlling the operation of the air blower of the indoor cooling unit based on the signal from the indoor return detector only during heating operation. The indoor cooling unit and the above-mentioned floor heating unit are operated together, and by heating the feet of the human body and adjusting the temperature near the head of the human body to a constant temperature, it is possible to heat the head and feet, making it comfortable to the touch. Furthermore, the efficiency of the entire system is improved by recovering the heat from the space that is not used for heating the human body and using it for heat dissipation from the floor surface. It has the advantage of being able to exhibit a great effect of significantly improving

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a heat pump type floor heating system according to an embodiment of the present invention, and FIG. 2 is an electrical circuit diagram of operation control in the same floor heating system. M...Floor f1 unit, B...Indoor cooling unit, C...Outdoor unit, 1...
...floor heat exchanger, 2...cooling heat exchanger,
3... Air blower, 6... Heat exchanger, 1
1...Indoor temperature detection device, 12...Operation control device, 16...Cooling/heating changeover switch, 16
······electromagnetic switch.

Claims (1)

[Claims] A refrigerant circulation circuit is composed of a floor heating unit with a floor heat exchanger, an indoor cooling unit with a cooling heat exchanger and blower, and an outdoor unit with a heat exchanger. A heat pump type floor heating device that operates the indoor cooling unit and the floor heating unit together by providing an electric circuit that controls the operation of the air blower of the indoor cooling unit based on a signal from the indoor temperature detection device only during operation.