JP4517556B2 - Heat pump heating system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat pump heating device that heats a fluid that is a heat exchange medium in a heat pump unit and circulates the fluid in a residence to heat a room or the like.
[0002]
[Prior art]
FIG. 7 is a plan view of a dwelling showing an arrangement state of the conventional floor heating pipe 8. In order to obtain the heating of the living room, a fluid such as an antifreeze liquid serving as a heat exchange medium is heated by the heat pump unit 1 placed outdoors, and the fluid is drawn indoors, inside the floor heating pipe 8 disposed under the flooring of the living room The interior is heated by heat transfer from the flooring and radiant heat from the floor.
[0003]
And such floor heating supplies the fluid at a temperature of about 60 ° C. so that a comfortable feeling of heating can be obtained even if the human body directly touches the flooring material, and at a temperature of about 40 ° C. that does not feel cold. The temperature and flow rate are controlled to return.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional heating device, although the fluid is heated and supplied with a sufficient amount of heat, if the given amount of heat is sufficiently dissipated, the fluid becomes cold and the cold feeling is felt. Return it before it gets cold. In other words, only a part of the amount of heat given is used (dissipated) and returned, and heating is performed while reheating.
[0005]
Accordingly, the inventors have devised the present invention by paying attention to the effective use of the given heat quantity. Accordingly, an object of the present invention is to provide a heat pump type heating device that can sufficiently effectively use the amount of heat given to a fluid.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following technical means.
[0007]
In invention of Claim 1, the inside of a residence is classified into the main heating area (A1) and the subheating area (A2), and the fluid heated by the heat pump unit (1) circulates in the main heating area (A1). In the heat pump heating device that constitutes a flow path that returns to the heat pump unit (1) after circulating through the sub-heating zone (A2) after heating by heat radiation ,
From the first pipe (8a) to the first pipe (8a) arranged on the back side of the floor material of the living room that forms the main heating area (A1) and under the floor (U) under the living room that forms the subheating area (A2) And a second pipe (8b) arranged below .
[0008]
This is because the living room where the house is desired to be controlled to a desired heating state is set as the main heating area (A1), and even if the heating state cannot be controlled, the floor under the floor is effective for enhancing the heating effect of the main heating area (A1) ( U) is a sub-heating zone (A2).
[0009]
And the fluid which distribute | circulated the floor material back side of the living room which is the main heating area (A1) and dissipated one part of heat | fever is distribute | circulated to the underfloor (U) which is a subheating area (A2) , and the remaining heat amount It is intended to heat as much as possible by dissipating heat. Thereby, it can be set as the heating apparatus which fully utilizes effectively the calorie | heat amount given to the fluid. In this case, the floor (U) under the living room as the main heating area (A1) is used as a place effective for enhancing the heating effect of the main heating area (A1), and heating with the remaining heat amount is performed. .
[0014]
As a result, conventionally, when floor heating is performed by arranging a floor heating pipe on the back side of the flooring material to heat the floor, even though heat insulation is used, heat is also radiated to the lower side of the floor to heat the room. However, the fluid after passing through the first pipe (8a) arranged on the back side of the floor material of the living room passes through the second pipe (8b) arranged under the floor (U) under the living room. Sometimes heat is dissipated under the floor. Heating the underfloor with the remaining amount of heat in this way reduces the amount of heat released from the first pipe (8a) on the back side of the flooring of the living room to the underfloor side, and can improve the heating efficiency of the living room. Result of this, even squeezing flow of conventionally fluid, and can be equivalent heating.
[0016]
The reference numerals in parentheses of the above means are an example showing the correspondence with the specific means described in the embodiments described later.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0018]
(First embodiment)
Drawing 1 is a mimetic diagram of a heat pump type heating device in one embodiment of the present invention. This is a supercritical heat pump cycle in which brine such as antifreeze is heated (about 60 ° C. in this embodiment) to perform floor heating and the like. The supercritical heat pump cycle (hereinafter abbreviated as heat pump) refers to 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, nitrogen oxide or the like as the refrigerant. Cycle.
[0019]
Reference numeral 2 denotes a compressor that sucks and compresses refrigerant (carbon dioxide in the present embodiment). The compressor 2 includes a compression mechanism (not shown) that sucks and compresses refrigerant, and an electric motor that drives the compression mechanism (see FIG. (Not shown). A heat exchanger 3 exchanges heat between the refrigerant discharged from the compressor 2 and brine such as antifreeze.
[0020]
4 is an electric expansion valve (decompressor) that depressurizes the refrigerant flowing out of the heat exchanger 3, and 5 is a refrigerant that evaporates the refrigerant flowing out of the electric expansion valve 4 to absorb the heat in the atmosphere. It is an evaporator that flows out the refrigerant toward the accumulator 6 (the suction side of the compressor 2). 5a is a blower capable of blowing air (outside air) to the evaporator 5 and adjusting the amount of blown air.
[0021]
An accumulator 6 separates the refrigerant flowing out of the evaporator 5 into a gas phase refrigerant and a liquid phase refrigerant, and flows the gas phase refrigerant out to the suction side of the compressor 2 and stores excess refrigerant in the heat pump.
[0022]
Reference numeral 7 denotes an electric pump (hereinafter abbreviated as a pump) that supplies (circulates) brine to the heat exchanger 3 and adjusts the amount of brine. The brine supplied to the heat exchanger 3 is heated by exchanging heat with the first tube 3a serving as the refrigerant radiator in the second tube 3b serving as the brine heating unit. 8 is a floor heating pipe (heat radiator) using the heated brine as a heat source, and is arranged in series with the flow of the brine.
[0023]
And the refrigerant | coolant temperature sensor which detects the temperature of the refrigerant | coolant which flows out out of the heat exchanger 3, the inflow brine temperature sensor which detects the temperature of the brine which flows in into the heat exchanger 3, and the temperature of the brine which flows out out of the heat exchanger 3 are detected. Detection signals from sensors (not shown) such as an outflow brine temperature sensor are input to an electronic control unit (ECU) (not shown).
[0024]
The compressor 2, the electric expansion valve 4, the blower 5a, and the pump 7 are controlled by an ECU (not shown) based on detection signals from these sensors (not shown).
[0025]
FIG. 2 is a plan view of a house showing the flow path of the floor heating pipe 8 in the first embodiment of the present invention. The residence is classified into a main heating area A1 and a sub-heating area A2, and the fluid heated by the heat pump unit 1 circulates in the main heating area A1 and is heated by heat radiation, and then flows through the sub-heating area A2. To the heat pump unit 1.
[0026]
FIG. 3 is a Ph diagram illustrating an operation state of the heat pump. A broken line square (a → b → c → d → a) in the figure is a cycle when the fluid in the flow path of the conventional floor heating pipe 8 as shown in FIG. 7 is heated, and a solid line square (a → b → e → f → a) is a cycle when the fluid in the flow path of the floor heating pipe 8 of the present invention is heated.
[0027]
As can be seen from the difference in the figure, the refrigerant was heated by applying the same power L (point a → b), and conventionally it was operated by giving only the amount of heat Q1 to the fluid (point b → c). On the other hand, in the present invention, the fluid radiates heat in the sub-heating area A2 and returns after cooling (for example, when the conventional temperature is about 40 ° C. becomes about 20 ° C.), the amount of heat of only Q2 is given to the fluid. (B point → e point) is given and the driving efficiency is improved.
[0028]
This is the place where you want to control the inside of your house to the desired heating state, the main heating area A1, even if you can not control the heating state, it is a place where you can get comfort by not being cold or cold, if it is 0 ° C or higher A place where the effect is exhibited and a place where the heating effect of the main heating area A1 is enhanced are defined as the sub-heating area A2.
[0029]
And it is going to heat as much as possible by distribute | circulating the fluid which distribute | circulated the main heating area A1 and radiated one part of heat quantity to sub-heating area A2, and radiated the remaining heat quantity. Thereby, it can be set as the heating apparatus which fully utilizes effectively the calorie | heat amount given to the fluid.
[0030]
In addition, the main heating area A1 is a living room, and the sub-heating area A2 is a shared part other than the living room such as a toilet, a washroom, a corridor, and stairs. FIG. 2 is an example in which a toilet and a corridor are heated as the sub-heating area A2.
[0031]
In this way, the place where people are long like a living room is the main heating area A1 that is controlled to the desired heating state, and the common parts other than the living room such as toilets, washrooms, corridors, stairs, etc. are not long. Although the heating state cannot be controlled, heating is performed with the remaining amount of heat as the sub-heating area A2 where comfort is obtained by not being cold / cold.
[0032]
In addition, in snowy areas, it can be used as a snow melting device for roofs and road heating around the house as a place where the heating effect is exhibited when the temperature is 0 ° C or higher. It is good also as a flow path which returns to the heat pump unit 1 after circulating under.
[0033]
(Second Embodiment)
FIG. 4 is a plan view of a residence showing the flow path of the floor heating pipe 8 in the second embodiment of the present invention, and FIG. 5 is a view of the residence of the flow path of the floor heating pipe 8 of FIG. It is side surface sectional drawing. FIG. 6 is an enlarged view of the floor heating pipe 8 portion of FIG.
[0034]
In the present embodiment, only the living room is heated. Conventionally, as shown in FIG. From the meandering pipe portion 8a (the solid line portion of point A to b point) descending to the floor U at the point b, and from the pipe portion 8b meandering in the underfloor U (b point portion to the broken line portion of the C point) to the point C, the heat pump The flow path returns to the unit 1. Incidentally, the piping portion 8a that heats the back surface of the flooring 9 is covered with a heat insulating material 8c that prevents heat radiation to the underfloor U side.
[0035]
As described above, the main heating area A1 is the living room, the subheating area A2 is the underfloor U under the living room, and the underfloor U is the place that is effective in enhancing the heating effect of the living room that is the main heating area A1. Heating is performed in the room. Conventionally, when the floor heating pipe 8 is disposed on the back side of the flooring 9 and the heated fluid is circulated and the floor heating is performed, heat is radiated also to the underfloor U side even though the heat insulating material 8c is used. The heating efficiency was reduced.
[0036]
For example, if the outside air temperature is 0 ° C., the temperature of the underfloor U is also about 0 ° C., which is usually the same as the outside air temperature. If the room temperature is kept at 20 ° C., a considerable amount of heat is dissipated to the under-floor U side. It was. Then, if the temperature of the underfloor U, which was conventionally about 0 ° C., can be increased to, for example, about 10 ° C. by circulating the fluid that has been returned at a temperature of about 40 ° C. at the bottom U and dissipating heat, the flooring 9 The amount of heat radiated from the rear pipe portion 8a to the underfloor U side can be reduced.
[0037]
In this way, by heating the underfloor U with the remaining heat amount, the amount of heat released to the underfloor U can be reduced, and the heating efficiency of the living room can be improved. Will be able to.
[0038]
Moreover, since the fluid radiates heat in the underfloor U as the sub-heating area A2 and cools and returns (for example, when the temperature is about 40 ° C. in the past becomes 20 ° C.), the heat pump is only Q2 shown in FIG. It is the same as in the first embodiment that the operation is performed with the amount of heat applied to the fluid and the operation efficiency is improved.
[0039]
Incidentally, the wall surface and ceiling surface of the living room may be used as the sub-heating area A2 as a place that is effective in enhancing the heating effect of the main heating area A1. In these places, the amount of heat released from the room is reduced by heating with the remaining amount of heat, and the heating efficiency of the room can be improved by radiating heat from other than the floor.
[0040]
(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows. In the above-described embodiment, a heating-only machine is used, but as a water heater, hot water is boiled and stored in a tank, and the hot water is used for floor heating, or a type that also serves as an air conditioner that performs cooling and heating. good.
[0041]
In addition, the heat pump cycle is a supercritical heat pump cycle using carbon dioxide as a refrigerant. However, a normal pressure vapor compression cycle using a refrigerant such as general chlorofluorocarbon may be used, and gas or oil is used as a heat source. It may be a heat pump cycle. Moreover, although floor heating is used as the heating means, air heating using a panel heater or the like may be used.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a heat pump heating device according to an embodiment of the present invention.
FIG. 2 is a plan view of a residence showing the flow path of the floor heating pipe in the first embodiment of the present invention.
FIG. 3 is a Ph diagram showing the operating state of the heat pump of the present invention.
FIG. 4 is a plan view of a residence showing a flow path of a floor heating pipe in a second embodiment of the present invention.
5 is a side sectional view of a dwelling as seen from the side of the flow path of the floor heating pipe of FIG. 4. FIG.
6 is an enlarged view of the floor heating pipe portion of FIG. 5. FIG.
FIG. 7 is a plan view of a residence 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 Sub heating area U Underfloor

Claims (1)

A heat pump unit is a heating means for fluid to be heat-exchange medium (1), and a heating means for heating (8) said heat pump unit (1) flows through the heated fluid in a residential, said dwelling Are classified into a main heating area (A1) and a sub-heating area (A2), and the fluid heated by the heat pump unit (1) circulates in the main heating area (A1) and heats by heat dissipation. In the heat pump heating device that constitutes a flow path that circulates through the sub-heating zone (A2) and then returns to the heat pump unit (1) ,
The first pipe (8a) disposed on the back side of the floor material of the living room that forms the main heating area (A1) and the first pipe (U) under the living room that forms the subheating area (A2) ( And a second pipe (8b) arranged below 8a) .

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