JP2003090547A - Heat pump type heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat pump type heater which can effectively utilize in full the quantity of heat given to fluid. SOLUTION: The interior of a house is classified into a main heating zone A1 and a sub-heating zone A2, and a fluid passage is made such that the fluid heated with a heat pump unit 1 circulates to the main heating zone A1 so as to perform heating by heat radiation, and then it returns to the heat pump unit 1 after circulating to the sub heating zone A2. This allows fluid, which has circulated in the main heating zone A1 and radiated only a part of the quantity of heat, to circulate in the sub-heating zone A2 and radiate the residual quantity of heat, by classifying the interior of the house such that the place the user wants to control into desired heating condition is the main heating zone A1, and that the place where the heating condition can not be controlled but comfortableness can be obtained thanks to its being not cold, the place which exhibits heating effect if it is at or over 0 deg.C, the place which is effective to raise the heating effect of the main heating zone A1, and others are the sub-heating zone A2. Hereby, this effectively utilizes in full the quantity of heat given to the fluid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump type heating device for heating a fluid serving as a heat exchange medium in a heat pump unit and circulating the fluid in a house to heat a living room or the like.

[0002]

2. Description of the Related Art FIG. 7 is a plan view of a house showing an arrangement of a conventional floor heating pipe 8. In order to heat the living room, a heat pump unit 1 placed outdoors heats a fluid such as an antifreezing liquid as a heat exchange medium, draws the fluid indoors, and a floor heating pipe 8 is arranged under the floor material of the living room. Is circulated to heat the room by heat transfer from the floor material and radiant heat from the floor surface.

In such floor heating, the fluid is supplied at a temperature of about 60 ° C. at which the human body does not feel hot and about 40 ° C. at which it does not feel cold so that a comfortable heating feeling can be obtained even if the human body directly touches the floor material. The temperature and flow rate are controlled so that the temperature will return at the above temperature.

[0004]

As described above, in the conventional heating device, even though the fluid is heated and supplied with a sufficient amount of heat, the amount of the applied heat is sufficiently radiated. If you do so, the fluid will become cold and give a cold feeling, so return it before it gets cold. So to speak, it is a situation in which only part of the given heat is used (to dissipate heat) to return it, and heating is performed while reheating.

Therefore, the inventors of the present invention have devised the present invention by paying attention to the point of effectively utilizing the given heat quantity. Therefore, an object of the present invention is to provide a heat pump type heating device that can effectively utilize the amount of heat given to a fluid.

[0006]

In order to achieve the above object, the present invention employs the following technical means.

According to the first aspect of the present invention, the inside of the house is classified into a main heating area (A1) and a sub-heating area (A2), and the fluid heated by the heat pump unit (1) enters the main heating area (A1). It is characterized in that it is a flow path that circulates and performs heating by heat radiation, and then circulates in the sub-heating area (A2) and then returns to the heat pump unit (1).

[0008] This is a place in the house where the desired heating condition is controlled as the main heating area (A1), and the comfort can be obtained by not being cold or cold even if the heating condition cannot be controlled. A sub-heating area (A2) is a place where the heating effect is exerted if the temperature is ℃ or higher, and a place where it is effective to enhance the heating effect of the main heating area (A1).
I am trying.

Then, a fluid that circulates in the main heating area (A1) and radiates a part of the heat quantity is circulated in the sub-heating area (A2), and the remaining heat quantity is radiated to heat as much as possible. It is to try. This makes it possible to provide a heating device that makes effective use of the amount of heat given to the fluid.

In the second aspect of the invention, the main heating area (A
1) is a living room, and the auxiliary heating area (A2) is a common part other than the living room such as a toilet, washroom, corridor and stairs.

As described above, a place where people are long, such as a living room, is a main heating area (A1) for controlling a desired heating state, and common areas other than the living room such as a toilet, a washroom, a corridor, and stairs are Although there are no people in the room, the auxiliary heating area (A2) provides comfort by not being cold or cold even if the heating status cannot be controlled.

Further, as a place where the heating effect is exerted at 0 ° C. or higher, it can be considered to be used as a snow melting device for a roof or as road heating around a house in a snowy area. Alternatively, it may be used as a flow path that flows under the road surface and returns to the heat pump unit (1).

In the third aspect of the invention, the main heating area (A
1) is a living room, and the sub-heating area (A2) is an underfloor (U) under the living room. In this, the underfloor (U) under the living room, which is the main heating area (A1), is used as a place effective for enhancing the heating effect of the main heating area (A1), and heating is performed with the remaining heat amount. .

As a result, conventionally, when the floor heating piping is arranged on the back side of the floor material and the heated fluid is circulated to heat the floor, heat is radiated to the underside of the floor even though the heat insulating material is used. However, by heating the underfloor with the remaining heat amount, the amount of heat radiation to the underfloor is reduced, and the heating efficiency of the living room can be improved. As a result, even if the flow rate of the fluid is reduced compared to the conventional case, the same heating can be performed.

Incidentally, the wall surface or ceiling surface of the living room may be used as the sub heating area (A2) as a place effective for enhancing the heating effect of the main heating area (A1). By heating these places with the remaining heat, the amount of heat released from the living room is reduced and the heating efficiency of the living room can be improved by heating from other than the floor surface.

The reference numerals in parentheses of the above-mentioned means are examples showing the correspondence with the concrete means described in the embodiments described later.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a schematic view of a heat pump type heating device in one embodiment of the present invention.
The brine such as antifreeze is heated (about 60 in this embodiment).
℃) It is a supercritical heat pump cycle for floor heating. In addition, the supercritical heat pump cycle (hereinafter, abbreviated as heat pump) means a heat pump cycle in which the refrigerant pressure on the high-pressure side is equal to or higher than the critical pressure of the refrigerant, for example, a heat pump using carbon dioxide, ethylene, ethane, nitric oxide, etc. as the refrigerant. It is a cycle.

Reference numeral 2 denotes a compressor for sucking and compressing a refrigerant (carbon dioxide in this embodiment). The compressor 2 has a compression mechanism (not shown) for sucking and compressing the refrigerant and an electric motor for driving the compression mechanism. It is an electric compressor integrated with a motor (not shown). A heat exchanger 3 exchanges heat with the refrigerant discharged from the compressor 2 and brine such as antifreeze.

Reference numeral 4 is an electric expansion valve (pressure reducer) for reducing the pressure of the refrigerant flowing out of the heat exchanger 3, and 5 is an electric expansion valve 4
It is an evaporator that evaporates the refrigerant flowing out from the refrigerant to absorb the heat in the atmosphere into the refrigerant and flows the refrigerant toward the accumulator 6 (the suction side of the compressor 2). Reference numeral 5a is a blower that blows air (outside air) to the evaporator 5 and can adjust the blowing amount.

An accumulator 6 separates the refrigerant flowing out of the evaporator 5 into a gas-phase refrigerant and a liquid-phase refrigerant, flows the gas-phase refrigerant to the suction side of the compressor 2, and stores excess refrigerant in the heat pump. Is.

An electric pump (hereinafter abbreviated as pump) 7 supplies (circulates) the brine to the heat exchanger 3 and adjusts the amount of the brine. The brine supplied to the heat exchanger 3 is heated by exchanging heat with the first tube 3a, which is a refrigerant radiator, in the second tube 3b, which is a heating unit for brine. Reference numeral 8 denotes a floor heating pipe (radiator) that uses the heated brine as a heat source, and is arranged in series with respect to the flow of the brine.

A refrigerant temperature sensor for detecting the temperature of the refrigerant flowing out of the heat exchanger 3, an inflow brine temperature sensor for detecting the temperature of brine flowing into the heat exchanger 3, and a temperature of brine flowing out of the heat exchanger 3. The detection signal of each sensor (not shown) such as an outflow brine temperature sensor that detects
It is also input to an electronic control unit (ECU) not shown.

The compressor 2, the electric expansion valve 4, the blower 5a, and the pump 7 are controlled by the ECU (not shown) based on the detection signals of the sensors (not shown).

FIG. 2 is a plan view of the house showing the flow path of the floor heating pipe 8 in the first embodiment of the present invention. The house is classified into a main heating area A1 and a sub-heating area A2, and the fluid heated by the heat pump unit 1 flows into the main heating area A1 to perform heating by heat radiation, and then flows in the sub-heating area A2. From the heat pump unit 1 to the heat pump unit 1.

FIG. 3 shows P indicating the operating state of the heat pump.
FIG. Broken-line squares in the figure (a → b → c → d →
a) is a cycle when heating the fluid in the flow path of the conventional floor heating pipe 8 as shown in FIG. 7, and is a solid line square (a → b).
→ e → f → a) is a cycle for heating the fluid in the flow path of the floor heating pipe 8 of the present invention.

As can be seen from the difference in the figure, with the refrigerant (point a → point b) heated by applying the same power L, conventionally, Q1 is used.
While the amount of heat is given to the fluid to operate (point b → point c), in the present invention, the fluid radiates heat in the sub-heating area A2 and returns by cooling (for example, about 40 ° C in the past). If the temperature is around 20 ° C.), the amount of heat of Q2 is given to the fluid (point b → point e) to operate, and the operating efficiency is also improved.

The main heating area A1 is the place in the house where the desired heating condition is to be controlled, and a place where comfort can be obtained by not being cold or cold even if the heating condition cannot be controlled, at 0 ° C or higher. If so, the place where the heating effect is exhibited, the place where it is effective to enhance the heating effect of the main heating area A1, and the like are defined as the sub heating area A2.

Then, a fluid that circulates in the main heating area A1 and radiates a part of the heat quantity is circulated in the sub-heating area A2, and the remaining heat quantity is radiated to heat as much as possible. is there. This makes it possible to provide a heating device that makes effective use of the amount of heat given to the fluid.

The main heating area A1 is used as a living room, and the secondary heating area A2 is used as a common area other than the living room such as a toilet, washroom, corridor, and stairs. FIG. 2 shows an example of heating the toilet and the corridor as the sub-heating area A2.

As described above, a place where people are long, such as a living room, is the main heating area A1 for controlling a desired heating state, and the common areas other than the living room such as the toilet, washroom, corridor, and stairs are occupied by people. Although it is not for a long time, heating is performed with the remaining heat amount as the sub-heating area A2 in which comfort can be obtained by not being cold or cold even if the heating state cannot be controlled.

Further, as a place exhibiting a heating effect at 0 ° C. or higher, it can be considered to be used as a snow melting device for a roof or as road heating around a house in a snowy area. Alternatively, it may be used as a flow path that flows under the road surface and returns to the heat pump unit 1.

(Second Embodiment) FIG. 4 is a plan view of a house showing a flow path of a floor heating pipe 8 in a second embodiment of the present invention, and FIG. 5 is a flow chart of the floor heating pipe 8 of FIG. It is the side sectional view of a residence which looked at a road from the side. Further, FIG. 6 is an enlarged view of the floor heating pipe 8 portion of FIG.

In this embodiment, only the living room is heated. However, as shown in FIG. 7, conventionally, the floor heating pipe 8 that meanders only the back surface of the floor material 9 and returns to the floor material 9 is generally passed. Of the pipe portion 8a meandering on the back side of the pipe (the solid line portion from the point A to the point b) to the underfloor U at the point b, and the meandering pipe portion 8 in the underfloor U
The flow path is from b (point b → broken line of point C) to point C and returns to the heat pump unit 1. Incidentally, the piping portion 8a that heats the back surface of the floor material 9 is covered with a heat insulating material 8c that prevents heat radiation to the underfloor U side.

In this way, the main heating area A1 is used as a living room,
The sub-heating area A2 is used as the underfloor U under the living room, and the underfloor U is used as a place effective for enhancing the heating effect of the living room that is the main heating area A1 to perform heating with the remaining heat amount.
Conventionally, when the floor heating pipe 8 is arranged on the back side of the floor material 9 and the heated fluid is circulated to heat the floor, heat is radiated to the underfloor U side even though the heat insulating material 8c is used. Had reduced the heating efficiency.

For example, when the outside air temperature is 0 ° C., the temperature of the underfloor U is usually about 0 ° C., which is equal to the outside air temperature, and when it is attempted to keep the room temperature of the living room at 20 ° C., a considerable amount of heat is transferred to the underfloor U side. It was radiating heat. Then, the temperature of the underfloor U, which was around 0 ° C. in the past, is reduced to about 10 ° C., for example, by circulating the fluid that has been returned at a temperature of around 40 ° C. in the underfloor U and radiating heat.
If it can be raised to about ℃
It is possible to reduce the amount of heat radiated from the under floor to the U side.

As described above, by heating the underfloor U with the remaining heat amount, the amount of heat radiation to the underfloor U side can be reduced, and the heating efficiency of the living room can be improved. Equivalent heating will be possible.

Further, since the fluid radiates heat in the underfloor U serving as the sub-heating area A2 and cools down and returns (for example, the conventional 40
When the temperature of about 20 ° C. is about 20 ° C.), the heat pump is operated by giving the heat quantity of Q2 shown in FIG. 3 to the fluid, and the operation efficiency is improved as in the first embodiment. .

Incidentally, as a place effective for enhancing the heating effect of the main heating area A1, the wall surface or ceiling surface of the living room may be the sub heating area A2. By heating the remaining amount of heat in these places as well, the amount of heat released from the living room is reduced, and the heat is radiated from other than the floor surface, so that the heating efficiency of the living room can be improved.

(Other Embodiments) The present invention is not limited to the above-described embodiments, but can be modified or expanded as follows. In the above-described embodiment, the heating-only machine is used, but it may be of a type that uses hot water to boil hot water and store it in a tank and use the hot water for floor heating, or a type that also serves as an air conditioner for cooling and heating. good.

Although the heat pump cycle is a supercritical heat pump cycle using carbon dioxide as a refrigerant, it may be a vapor compression cycle of normal pressure using general CFC as a refrigerant, or gas or oil as a heat source. It may be a heat pump cycle using. Although floor heating is used as the heating means, air heating using a panel heater or the like may be used.

[Brief description of drawings]

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

FIG. 2 is a plan view of a house showing a flow path of a floor heating pipe according to the first embodiment of the present invention.

FIG. 3 is a view showing an operating state of the heat pump of the present invention Ph
It is a diagram.

FIG. 4 is a plan view of a house showing a flow path of a floor heating pipe according to a second embodiment of the present invention.

5 is a side cross-sectional view of the house when the flow path of the floor heating pipe of FIG. 4 is viewed from the side.

FIG. 6 is an enlarged view of a floor heating pipe portion of FIG.

FIG. 7 is a plan view of a house showing a flow path of a conventional floor heating pipe.

[Explanation of symbols]

1 Heat pump unit (heating means) 8 Floor heating piping (heating means) A1 main heating area A2 secondary heating area U floor

Claims (3)

[Claims] 1. A heat pump unit (1) which is a means for heating a fluid serving as a heat exchange medium, and a heating means (8) which circulates the fluid heated by the heat pump unit (1) to heat the inside of a house. In a heat pump type heating device provided, a main heating area (A1) and a sub-heating area (A2) are provided inside the house.
And the fluid heated in the heat pump unit (1) flows into the main heating area (A1) to perform heating by heat radiation, and then flows into the sub heating area (A2) before the heat pump. A heat pump type heating device having a flow path returning to the unit (1). 2. The main heating area (A1) is used as a living room, and the sub-heating area (A2) is used as a common part other than the living room such as a toilet, washroom, corridor, stairs, etc.
The heat pump type heating device described in. 3. The heat pump type heating device according to claim 1, wherein the main heating area (A1) is a living room, and the sub heating area (A2) is an underfloor (U) under the living room.