JP2003065629A - Package type cooling-heating and floor heating equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide package type cooling-heating and floor heating equipment which can execute cooling and heating operations independently, of course, of which the hot water pipe laid in circulation through a floor heating unit is short, which dispenses with particular boring of a partition wall and further which enables effective use of the heat generated from a heat exchanger for floor heating, for indoor heating. SOLUTION: The floor heating unit (C) is combined with package type cooling-heating equipment comprising an indoor machine (A) equipped with an indoor heat exchanger and disposed indoors and an outdoor machine (B) equipped with a compressor, an outdoor heat exchanger, etc., and disposed outdoors. The floor heating unit (C) is disposed indoors integrally with the indoor machine (A), in construction, or it is connected to an indoor refrigerant circuit of existing package type cooling-heating equipment. A floor heater (D) constituted of a radiator is connected to a heat medium pipeline of the floor heating unit (C).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package type cooling and heating apparatus comprising an indoor unit equipped with an indoor heat exchanger and arranged indoors, and an outdoor unit equipped with a compressor, an outdoor heat exchanger and the like arranged outdoors. In addition, the present invention relates to a packaged heating / cooling / floor heating device in which a floor heating unit is further combined.

[0002]

2. Description of the Related Art As is well known in the art, a package type cooling and heating apparatus comprising a refrigerating cycle comprises an indoor unit and an outdoor unit. The indoor unit is composed of an indoor heat exchanger, an expansion valve, a capillary tube, or the like that functions as an evaporator during cooling and functions as a condenser during heating. On the other hand, the outdoor unit is composed of an outdoor heat exchanger, that is, an air heat exchanger, which acts as a condenser during cooling and acts as an evaporator during heating, a compressor for compressing a refrigerant, a capillary tube, and the like. Therefore, when the compressor is started and the refrigerant is circulated in the order of the air heat exchanger, the capillary tube, the indoor heat exchanger, and the compressor, the state of the refrigerant changes to liquid, gas, and liquid. Since the heat is released to the outside and the outside heat is absorbed in the indoor heat exchanger, the room is cooled. Further, when the refrigerant is circulated in the order of the indoor heat exchanger, the capillary tube, the air heat exchanger, and the compressor, the state of the refrigerant changes to liquid, gas, and liquid, at which time the air heat exchanger absorbs external heat. Since the heat is released from the indoor heat exchanger to the room, the room is heated.

On the other hand, a floor heater is also well known in the related art, and is composed of a radiator that radiates heat of water, which is a heat medium, to the floor surface. Generally, city gas, propane gas, petroleum, etc. are used to heat the water in the floor heater, but a heat source including a refrigeration cycle is also used. The floor heater is arranged in a room partitioned by a partition wall, but a combustion device for city gas, propane gas, oil, etc. is provided outside the room. Further, a heat source composed of a refrigeration cycle is also arranged outdoors. In this way, the heat source arranged outdoors and the floor heater arranged indoors are connected by the hot water pipe penetrating the partition wall.

[0004]

The refrigeration cycle has a high thermal efficiency and is effective as a heat source for a floor heater. When combined with a conventional packaged heating / cooling device, the outdoor heat exchanger acts as a condenser or an evaporator. That is, an outdoor unit including an air heat exchanger and a compressor that compresses a refrigerant can be shared, and there is an advantage that floor heating can be performed at low cost.
However, there are many points or drawbacks to be improved. For example, since the refrigeration cycle is provided outdoors, it is necessary to pipe a hot water pipe to the floor heater in the room, but this pipe has the drawback of being long. In addition, since it is necessary to newly open a through hole for piping in the partition wall, there is a problem that it is difficult to apply the existing packaged cooling and heating device. Furthermore, although heat is also generated from the floor heating heat exchanger that heats the floor heating water with the refrigerant of the refrigeration cycle,
This heat is unnecessarily released into the atmosphere, and it cannot be said that the good thermal efficiency of the refrigeration cycle is fully utilized.

An object of the present invention is to provide a packaged heating / cooling / floor heating system which solves the above problems. Specifically, it goes without saying that the heating operation and the cooling operation can be independently operated. The hot water pipe for supplying water to the floor heater is short, there is no need to make holes in the partition wall, and the heat generated from the heat exchanger for floor heating is effectively used for heating the room. The purpose is to provide a type air conditioner / floor heater. Another object of the present invention is to provide a packaged cooling / heating / floor heating apparatus that can perform floor heating with high-temperature heating water in addition to the above objects.

[0006]

The above object of the present invention is achieved by sharing a refrigerant line. That is, the indoor unit is provided indoors, and the outdoor unit is provided outdoors, and since these are connected by the refrigerant pipeline, the floor heating unit is connected to the refrigerant pipeline laid in the room, and the floor heating unit is connected. Is achieved by arranging in the room. As described above, when the floor heating unit is connected to the refrigerant pipe lined in the room, the hot water pipe circulating in the floor heater is not particularly required. Further, there is no need to make a hole in the partition wall. Further, since the floor heating unit is arranged indoors, the heat generated from the floor heating heat exchanger is released into the room, which leads to effective use of energy. In order to achieve the above-mentioned object, the invention according to claim 1 is an indoor unit provided with an indoor heat exchanger and arranged indoors, and an outdoor unit provided with a compressor, an outdoor heat exchanger, etc. Consisting of an indoor heat exchanger of the indoor unit from the compressor of the outdoor unit, an outdoor heat exchanger of the outdoor unit, when circulating the refrigerant in order of the compressor,
When the indoor is heated by the indoor unit, and the refrigerant is circulated from the compressor of the outdoor unit to the outdoor heat exchanger of the outdoor unit, the indoor heat exchanger of the indoor unit, and the compressor of the outdoor unit in order,
In the packaged cooling and heating apparatus configured to cool the room by the indoor unit, the cooling and heating apparatus exchanges heat between a refrigerant circulating between the indoor unit and the outdoor unit and a heat medium such as water. Further comprising a floor heating unit having a floor heating heat exchanger, wherein the floor heating unit is integrated with the indoor unit and is placed indoors, and in the heat medium pipe of the floor heating unit. Is configured to be connected to a floor heater consisting of a radiator. The invention according to claim 2 is an indoor unit provided with an indoor heat exchanger and arranged indoors,
A compressor, an outdoor unit provided with an outdoor heat exchanger and the like and arranged outdoors, the compressor of the outdoor unit to the indoor heat exchanger of the indoor unit, the outdoor heat exchanger of the outdoor unit, the order of the compressor When the refrigerant is circulated, the indoor unit heats the room,
When the refrigerant is circulated from the compressor of the outdoor unit to the outdoor heat exchanger of the outdoor unit, the indoor heat exchanger of the indoor unit, the compressor of the outdoor unit, the room is cooled by the indoor unit. In the package type heating and cooling apparatus, the cooling and heating apparatus is a floor provided with a floor heating heat exchanger in which heat is exchanged between a refrigerant circulating between the indoor unit and the outdoor unit and a heat medium such as water. A heating unit is further provided, and the floor heating unit is configured for wall-hanging or floor-standing indoor use, and a floor heater composed of a radiator is connected to a heat medium pipe of the floor heating unit. Is configured as follows. In the invention according to claim 3, the heat exchanger of the floor heating unit according to claim 1 or 2 is composed of a plate heat exchanger.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
Will be described. The packaged cooling / heating / floor heating apparatus according to the present embodiment includes an indoor unit A, an outdoor unit B, a floor heating unit C, and a floor heater D. Indoor unit A
Includes an indoor heat exchanger 1 that functions as an evaporator during cooling and as a condenser during heating. First and second refrigerant pipes 4 and 5 are connected to the indoor heat exchanger 1, respectively,
The second refrigerant pipe 5 is provided with a capillary tube 6 and a check valve 7 that allows a rightward flow in FIG. 1 in parallel. The flow resistance of the capillary tube 6 depends on the check valve 7
Greater than the flow resistance of. Therefore, when the refrigerant flows to the right, it passes through the check valve 7, and when it flows to the left, it passes through the capillary tube 6. A fan 3 driven by a motor 2 is provided corresponding to the indoor heat exchanger 1 as is conventionally known.

The outdoor unit B is, as is well known in the art, a compressor 10 that pressurizes a refrigerant such as ammonia instead of CFC, an air heat exchanger that functions as a condenser or an evaporator, that is, an outdoor heat exchanger 20, It consists of an accumulator 17 and the like. FIG. 1 is a diagram showing a flow state of the refrigerant during heating, and in the state shown in FIG.
The refrigerant discharge pipe 11 is connected to a predetermined port of the four-way valve 14, and the refrigerant pipe line 12 extends from the other port toward the floor heating unit C. A first refrigerant return pipe 16 is connected to the compressor 10. The starting end of the first refrigerant return pipe 16 is open inside the accumulator 17. One of the second refrigerant return pipes 18 that returns the refrigerant to the accumulator 17 is connected to a predetermined port of the four-way valve 14.

A fourth refrigerant pipe 21 is attached to the other side of the outdoor heat exchanger 20. The fourth refrigerant pipe 21 is provided with a capillary tube 24 and a check valve 25 that allows a rightward flow in FIG. 1 in parallel. Then, the fourth refrigerant pipe 21 also extends toward the floor heating unit C. A fan 23 driven by a motor 22 is provided corresponding to the outdoor heat exchanger 20 as is conventionally known.

The floor heating unit C includes a heat exchanger 3 for floor heating.
It has 0. The floor heating heat exchanger 30 is for exchanging heat between the refrigerant supplied from the compressor 10 of the outdoor unit B and a heat medium for heating the floor, such as water, and is not particularly limited. In this embodiment, it is composed of a plate heat exchanger. Although the structure itself of the plate heat exchanger is well known in the art, a detailed description thereof will be omitted. However, the whole structure has a vertically long substantially cubic shape, and a plurality of plates are provided therein. The heat transfer area, capacity, etc. are appropriately selected depending on the area, number, etc. of the plurality of plates. A fifth refrigerant pipe 31 is provided above the heat exchanger 30 for floor heating,
The water supply pipe 43 is connected, and the sixth refrigerant pipe 32 is provided below.
And the hot water outlet pipe 35 are connected to each other. The first and second refrigerant pipes 31 and 32 configured as described above are provided with a bypass pipe 33 ′ that short-circuits the floor heating heat exchanger 30, and the bypass pipe 33 ′ has a flow control valve 33 ′. Is installed. Therefore, when the flow control valve 33 is closed, the refrigerant flows through the floor heating heat exchanger 30, and when opened, flows through the bypass pipe 33 ′ having a small fluid resistance. Further, by adjusting the opening degree of the flow rate control valve 33, it is possible to flow a predetermined amount toward the flow rate control valve 33.

According to the embodiment shown in FIG. 1,
The floor heating unit C also includes a cushion tank 40. One of the water supply pipes 34 described above is connected below the cushion tank 40, and the return pipe 41 is connected above this cushion tank. An electromagnetic on-off valve 42 is interposed in the return pipe 41, and an outlet 43 is provided at the start end thereof.
Is attached. On the other hand, a circulating pump 36 and an electromagnetic on-off valve 38 are interposed in the hot water outlet pipe 35, and an outlet 38 is similarly attached to the end point thereof.

The floor heater D is provided with a meandering radiator 50 as is well known in the art. Electromagnetic on-off valves 52 and 55 are respectively provided in a warm water pipe 51 and a warm water return pipe 52 of the radiator 50, and Connectors 53 and 56 are provided at the ends, respectively.

The indoor unit A and the floor heating unit C configured as described above are arranged in the room on the left side of the partition wall W, that is, the room, and the outdoor unit B is arranged on the right side of the outdoor room. In the embodiment shown in FIG. 1, the cooling and heating / floor heating device arranged in this way has the fourth refrigerant pipe 21, the refrigerant communication pipe 39, the second refrigerant pipe 5, and the refrigerant pipe line 12. The sixth refrigerant pipe 32, the fifth refrigerant pipe 31, and the first refrigerant pipe 4 are
At the time of construction, they are connected and integrated by the respective pipe joints T, T, .... Also, the floor heater D is an outlet 3
It is connected to the floor heating unit C by inserting plugs 53 and 56 into 8 and 43.

Since the packaged cooling / heating / floor heating apparatus according to the present embodiment is configured as described above, the four types of heating operation, floor heating / heating operation, floor heating operation and cooling operation are as follows. It can be operated automatically or manually. The compressor 10 of the packaged heating / cooling / floor heating apparatus according to the present embodiment is controlled by an inverter and is operated within a range of 20 to 100% of its capacity.

Heating operation: For example, pressing the heating operation of the operation switch of the controller. Then, the 4-way valve 14
Is driven by the actuator and switches to the state shown in FIG. Further, the flow control valve 33 is opened. The refrigerant circulates in the order of the compressor 10, the flow control valve 33, the indoor heat exchanger 1, the capillary tube 6, the outdoor heat exchanger 20, the accumulator 17, and the compressor 10. During this time, the state of the refrigerant changes as is well known in the art, and this time the indoor heat exchanger 1 acting as a condenser heats the room to a set temperature.

Floor heating / heating operation: Press the floor heating / heating operation of the operation switch. The opening degree of the flow control valve 33 is adjusted. Further, the electromagnetic opening / closing valves 37, 42, 52 and 55 of the floor heating unit C and the floor heater D are opened. Further, the water pump 36 is activated. The refrigerant flows in the same direction as during the heating operation, but this time, since the flow control valve 33 has its opening adjusted, a part thereof also flows toward the floor heating heat exchanger 30.
Since hot water in the cushion tank 40 is flowing to the floor heating heat exchanger 30 by the water pump 36, the hot water is easily heated by the refrigerant. The heated warm water is supplied from the warm water supply pipe 51 to the radiator 50, and the warm water return pipe 54,
The water returns from the water supply pipe 34 to the floor heating heat exchanger 30 via the return pipe 41 and the cushion tank 40. When circulating in this way, the heat in the warm water is radiated from the radiator 50 to the floor and the floor is heated.

Floor heating operation: Press the floor heating operation switch. The flow control valve 33 is fully closed. The refrigerant and the hot water flow in the same direction as the above, but all of the refrigerant flows toward the floor heating heat exchanger 30. As a result, it is possible to quickly heat up and heat the floor under high temperature. When floor heating is performed as described above, the heat in the warm water may not be sufficiently radiated depending on the type of the radiator 50 and may return to the floor heating heat exchanger 30 in a high temperature state. In such a case, light load operation is performed.
Although warm water is generally stored in the cushion tank 40, when the temperature of the warm water is low, the cushion tank 40 may be bypassed for a set time so that the cushion tank 40 may start up early.

According to the present embodiment, when the floor heating is performed as described above, since the heating heat exchanger 30 is composed of the plate heat exchanger, hot water of 70 ° C. or higher can be obtained. The reason is not clear, but if the heat transfer area of the floor heating heat exchanger 30 is wide and the capacity is large with respect to the amount of supplied water, a gaseous refrigerant in the floor heating heat exchanger 30. The time for heat exchange with the refrigerant is long, the refrigerant can be sufficiently condensed and a large amount of supercooling can be taken. Therefore, the condensing pressure is as low as about 2.15 MPa, and hot water of 70 ° C. or higher can be obtained. Conceivable. Further conceivable reasons are that the degree of supercooling is large and the heat transfer area of the heat exchanger 30 for floor heating is wider than that required for a normal condenser, for example, doubled. Therefore, it is considered that the condensing pressure is reduced to about 2.15 MPa and that hot water having a high temperature of 70 ° C. or higher can be obtained.

Cooling operation: For example, pressing the cooling operation of the operation switch provided in the controller. Then, the four-way valve 14 is driven by the electromagnetic coil, and the refrigerant discharge pipe 11 and the third refrigerant pipe 15 are connected. at the same time,
The four-way valve 14 allows the refrigerant conduit 12 and the second refrigerant return pipe 18
And are connected. Further, the flow control valve 33 is opened. In addition,
Solenoid on-off valves 37 and 4 of floor heating unit C and floor heater D
2, 52 and 55 are closed and the water pump 36 is not activated. Since the refrigerant circuit is switched as described above, the refrigerant is the compressor 10, the outdoor heat exchanger 20, the capillary tube 2
4, indoor heat exchanger 1, accumulator 17, compressor 10
Cycle in order. During this time, the state of the refrigerant changes as is well known in the art, and the indoor heat exchanger 1 acting as an evaporator cools the room to a set temperature.

In the embodiment shown in FIG. 1, the floor heating unit C is previously integrated with the indoor unit A,
It is also possible to connect the floor heating unit C according to the present embodiment to a packaged cooling and heating device including an existing indoor unit and outdoor unit. At this time, the floor heating unit C is a wall-hanging type or a floor-standing type, and the refrigerant circuit of the floor heating heat exchanger 30 of the floor heating unit C is connected to the refrigerant circuit connecting the indoor unit and the outdoor unit on the indoor side. To carry out. It is obvious that the above-described cooling and heating and floor heating can be performed even by carrying out in this way.

[0021]

As described above, according to the present invention, in a package type cooling and heating apparatus including an indoor unit and an outdoor unit,
The indoor unit and the outdoor unit further has a floor heating unit having a heat exchanger for floor heating in which a refrigerant and a heat medium such as water are circulated, and the floor heating unit, The floor heating unit is integrated with the indoor unit and is placed indoors, and the floor heating unit composed of a radiator is connected to the heat medium conduit of the floor heating unit. In addition, the floor heating unit is configured as a wall-mounted or floor-standing type indoor, and a floor heater composed of a radiator is connected to the heat medium pipe of the floor heating unit. Can be operated independently of each other, the hot water pipe circulating to the floor heater is virtually unnecessary, there is no need to perforate the partition wall, and further it is generated from the heat exchanger for floor heating. Dissipate heat into the room That it is, unique effects are obtained in the present invention. Further, according to another invention, in addition to the above effects, an effect that floor heating can be performed with a high-temperature heat medium is further obtained.

[Brief description of drawings]

FIG. 1 is a circuit diagram schematically showing an embodiment of the present invention.

[Explanation of symbols]

A indoor unit B outdoor unit C floor heating unit D floor heater 1 indoor heat exchanger 10 compressor 20 outdoor heat exchanger 30 floor heating heat exchanger 50 radiator reference number SCIEN039
Page (1/1)

[Procedure amendment]

[Submission date] August 29, 2001 (2001.8.2)
9)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F25B 6/04 F25B 6/04 C F term (reference) 3L050 AA03 AA06 DD02 DD07 EE04 EE10 EE41 3L070 AA09 BB14 DD07 DE01 DE09 DF01 DG01 DG05

Claims (3)

[Claims] 1. An outdoor unit (A) provided with an indoor heat exchanger and arranged indoors, and an outdoor unit (B) provided with a compressor, an outdoor heat exchanger, etc., and arranged outdoors. When the refrigerant is circulated from the compressor in the order of the indoor heat exchanger of the indoor unit, the outdoor heat exchanger of the outdoor unit, and the compressor, the room is heated by the indoor unit, and the indoor unit heats the outdoor unit from the outdoor unit compressor. Outdoor heat exchanger of the machine, indoor heat exchanger of the indoor unit, when the refrigerant is circulated in the order of the compressor of the outdoor unit, in the package type cooling and heating apparatus, the room is cooled by the indoor unit, The cooling and heating apparatus further includes a floor heating unit (C) including a floor heating heat exchanger that exchanges heat between a refrigerant circulating between the indoor unit and the outdoor unit and a heat medium such as water. The floor heating unit (C) is integrated with the indoor unit (A) The package type is characterized in that the floor heating unit (C) is arranged indoors, and a floor heater (D) including a radiator is connected to the heat medium pipe of the floor heating unit (C). Air conditioning / floor heating system. 2. An outdoor unit (A) having an indoor heat exchanger and arranged indoors, and an outdoor unit (B) having a compressor, an outdoor heat exchanger and the like arranged outdoors, the outdoor unit comprising: When the refrigerant is circulated from the compressor in the order of the indoor heat exchanger of the indoor unit, the outdoor heat exchanger of the outdoor unit, and the compressor, the room is heated by the indoor unit, and the indoor unit heats the outdoor unit from the outdoor unit compressor. Outdoor heat exchanger of the machine, indoor heat exchanger of the indoor unit, when the refrigerant is circulated in the order of the compressor of the outdoor unit, in the package type cooling and heating apparatus, the room is cooled by the indoor unit, The cooling and heating apparatus further includes a floor heating unit (C) including a floor heating heat exchanger that exchanges heat between a refrigerant circulating between the indoor unit and the outdoor unit and a heat medium such as water. The floor heating unit (C) is a wall-mounted or floor-standing type A package type cooling / heating system which is configured for indoor use, and a floor heater (D) including a radiator is connected to the heat medium pipe of the floor heating unit (C).・ Floor heating device. 3. A packaged heating / cooling / floor heating apparatus, wherein the heat exchanger of the floor heating unit (C) according to claim 1 or 2 is a plate heat exchanger (30).