JPH08296873A - Air-conditioning equipment - Google Patents

Abstract

PURPOSE: To obtain air-conditioning equipment which can carry out both heating and cooling without increasing an indoor installation space. CONSTITUTION: By making hot water flow through a heat exchanger 3, radiant heat is emitted from the front of the heat exchanger and thereby indoor heating is conducted. By making cold water flow through the heat exchanger 3 and by operating a blower 4, besides, indoor air is cooled through the intermediary of the back side of the heat exchanger 3 and heat transfer fins 3e while it is made to flow forcedly through an air flow passage 3f, and thereby indoor cooling is conducted. Accordingly, both of heating and cooling can be conducted with a depth dimension being equal practically to the one of panel type heating equipment which emits the radiant heat from the front.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for heating and cooling a general house or office building.

[0002]

2. Description of the Related Art Conventionally, various heating devices have been used in general houses and office buildings. Among them, a panel type heating device using hot water as a heat source requires a small installation space in a room and is safe. Widely used because of its high price.
This panel-type heating device is equipped with a panel-shaped radiator that is installed along the wall surface of the room, etc. By circulating hot water generated by a boiler etc. to this radiator, the radiant heat emitted from the front surface of the radiator is radiated. It is designed for heating.

[0003]

However, since the conventional panel-type heating device is dedicated to heating, there is a problem in that a separate cooling device is required when cooling is desired and the equipment cost increases. There is also a fan coil unit that selectively circulates hot water and cold water to perform both heating and cooling, but in this case, the heat exchanger is housed in the casing and only forced convection is performed. As a result, heating and cooling are performed, and therefore, there is a problem that it is larger than the panel-type heating device and the installation space is significantly increased.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an air conditioner capable of performing both heating and cooling without increasing the installation space in the room. Especially.

[0005]

In order to achieve the above object, the present invention provides an air flow passage according to claim 1, wherein the front surface is a heat transfer surface facing the indoor side and the back surface is provided with heat transfer fins. An indoor side heat exchanger, a blower for circulating the indoor air in the air flow passage of the indoor side heat exchanger, and a high temperature side heat medium for heating the indoor air in the indoor side heat exchanger and cooling the indoor air And a heat medium supply means for selectively supplying the low temperature side heat medium for the air conditioner. As a result, the high-temperature side heat medium is circulated through the indoor heat exchanger, so that radiant heat is released from the front surface of the indoor heat exchanger to heat the room. Further, by circulating the low-temperature side heat medium to the indoor heat exchanger and operating the blower, the indoor air is forced to flow through the air flow passage and through the rear side of the indoor heat exchanger and the heat transfer fins. The interior of the room is cooled by cooling the interior of the room and absorbing radiant heat on the front surface. Therefore, it is possible to perform both heating and cooling with a depth dimension almost equal to that of the conventional panel-type heating device that radiates heat from the front surface during heating.

According to the second aspect of the present invention, the front side is a heat transfer surface facing the indoor side, and the rear side has an indoor heat exchanger having an air flow passage having heat transfer fins, and an indoor heat exchanger. A blower that circulates the indoor air in the air flow passage, a high-temperature-side heat medium supply unit that supplies a high-temperature-side heat medium for heating the indoor air to the indoor-side heat exchanger, and a room-side heat exchanger that cools the indoor air. Low temperature side heat medium supply means for supplying the low temperature side heat medium for heating, and the high temperature side heat exchange section for circulating the high temperature side heat medium and the low temperature side heat exchange for circulating the low temperature side heat medium through the indoor side heat exchanger. And an air conditioner composed of parts. With this, by circulating the high temperature side heat medium through the high temperature side heat exchange section of the indoor side heat exchanger, radiant heat is released from the front surface of the indoor side heat exchanger to heat the room. Further, the low temperature side heat medium is circulated through the low temperature side heat exchange section of the indoor side heat exchanger,
By operating the blower, the room air is forcibly circulated in the air flow passage and is cooled through the low temperature side heat exchange section and the heat transfer fins to cool the room. This allows
Similar to the first aspect, it is possible to perform both heating and cooling with a depth dimension almost equal to that of the conventional panel-type heating device. Further, while the high temperature side heat medium is circulated in the high temperature side heat exchange section of the indoor side heat exchanger, the low temperature side heat medium is circulated in the low temperature side heat exchange section of the indoor side heat exchanger, and by operating the blower, Since the indoor air is cooled in the low temperature side heat exchange section to remove moisture and heated by the high temperature side heat exchange section,
The indoor air is dehumidified.

According to a third aspect, in the air conditioner according to the second aspect, the high temperature side heat exchange section of the indoor side heat exchanger is arranged on the front side, and the low temperature side heat exchange section is arranged on the rear side. ing. As a result, in addition to the effect of claim 2, since the low temperature side heat exchange section is arranged on the back side of the indoor side heat exchanger, dew condensation occurs on the front side of the heat exchanger during cooling or dehumidification. There is no.

Further, according to a fourth aspect of the present invention, there are provided an indoor heat exchanger having a heat transfer surface having a front surface facing the indoor side and an air flow passage having heat transfer fins arranged on the rear surface, and an indoor heat exchanger. A blower for circulating the indoor air in the air flow passage, and a heat medium for selectively supplying a high-temperature side heat medium for heating the indoor air and a low-temperature side heat medium for cooling the indoor air to the indoor heat exchanger The indoor heat exchanger comprises a front side heat exchange section located on the front side and a rear side heat exchange section located on the rear side, and the high temperature side heat medium includes a front side heat exchange section and a rear side. The air conditioner is configured such that the low-temperature side heat medium is circulated in both of the side heat exchange sections, and the low temperature side heat medium is circulated only in the back side heat exchange section. As a result, similarly to the first aspect, it is possible to perform both heating and cooling with a depth dimension substantially equal to that of the conventional panel-type heating device. Also, since cold water does not flow through the front side heat exchange section during cooling, no condensation occurs on the front side of the indoor heat exchanger, and during heating, not only the front side heat exchange section but also the back side heat exchange section. The air is also heated by the parts.

According to a fifth aspect of the present invention, in the air conditioner according to the first, second, third, or fourth aspect, the outflow direction in which the air outflow direction of the air flow passage is switched between the upper side and the front side. A switching means is provided. Thus, in addition to the action of claim 1, 2, 3 or 4, by switching the air outflow direction to the front side during heating and to the upper side during cooling, the air outflow direction can be changed during heating and during cooling. It becomes possible to make it appropriate.

[0010]

1 to 9 show a first embodiment of the present invention. FIG. 1 is an overall perspective view of an indoor unit of an air conditioner, and FIG. 2 is a plan sectional view of the indoor unit. 3 is a partially enlarged perspective view of the heat exchanger, FIG. 4 is a schematic front view of the indoor unit, FIG. 5 is a schematic side view of the indoor unit, and FIG. 6 is a circuit configuration diagram of the air conditioner.

The indoor unit 1 shown in FIG. 1 has a thin indoor unit body 2, a heat exchanger 3 for circulating hot or cold water as a heat medium, and a blower for circulating indoor air through the heat exchanger 3. 4 and a drain pan 5 that receives condensed water condensed in the heat exchanger 3, and the indoor unit 1 is installed along the wall surface of the room, as shown in FIG.

The indoor unit body 2 is formed so as to cover the back surface, both side surfaces and the upper part of the indoor unit 1, and an air discharge port 2a facing obliquely upward is provided in the upper part.

The heat exchanger 3 is arranged on the front side of the indoor unit body 2, and the front surface thereof forms a heat transfer surface facing the indoor side.
The heat exchanger 3 has a total of four heat medium flow pipes 3a formed in a flat shape, and each heat medium flow pipe 3a has a large number of flow passages 3a 'arranged in the width direction as shown in FIG. Each heat medium flow pipe 3a is formed in a single plate shape by stacking the heat medium flow pipes 3a in the vertical direction with the end faces in the wide direction abutting each other. Further, both ends of each heat medium flow pipe 3a are connected to a pair of headers 3b, respectively, and a heat medium inflow port 3c is provided in an upper part of one header 3b and a heat medium outflow port 3d is in a lower part thereof.
Are provided respectively. That is, as shown in FIG. 4, the heat medium that has flowed in from the heat medium inlet 3c reaches the heat medium flow pipe 3a from the upper heat medium flow pipe 3a to the lower heat medium flow pipe 3a in order.
After flowing through the inside in a meandering manner, it flows out from the heat medium outlet 3d. Here, in the present embodiment,
Although the surface of the heat medium flow pipe 3a facing the indoor side is formed in a flat shape, the surface is bent into a corrugated shape or a separate heat transfer fin is attached in order to increase the heat exchange area and improve heat exchange efficiency. You may do it. In addition, each heat medium flow pipe 3
A heat transfer fin 3e bent in a wave shape is provided on the back side of a, and an air flow passage 3f is formed by a space in which the heat transfer fin 3e is arranged, that is, a space surrounded by the heat transfer fin 3e formed in a wave shape. Has been done.

The blower 4 is arranged above the heat exchanger 3,
It is composed of a cross-flow fan. That is, the blower 4 is composed of a total of two impellers 4a extending in a tubular shape in the width direction of the indoor unit 1 and a motor 4b arranged between the impellers 4a, and the rotation axis of the motor 4b is each impeller 4a. Are coaxially connected to. Further, the blower 4 is configured such that when a switch 4c provided on one side surface of the indoor unit body 2 is turned on, the motor 4b is rotated to operate, and the air on the indoor side is moved by the operation of the blower 4.
Is forcibly sucked from the lower part of the indoor unit 2 and is blown out from the air discharge port 2a of the indoor unit body 2 through the air flow passage 3f.

The drain pan 5 is arranged below the heat exchanger 3 and has a drain port 5a on the bottom surface thereof, which is connected to a drain pipe (not shown).

The indoor unit 1 configured as described above is connected to the boiler 6 as the high temperature side heat medium supply means and the refrigerator 7 as the low temperature side heat medium supply means, and the high temperature side generated by the boiler 6 Hot water as a heat medium and cold water as a low temperature side heat medium generated in the refrigerator 7 are selectively circulated. That is, FIG. 6 shows an example provided with a plurality of indoor units 1. The boiler 6 and the refrigerator 7 are connected to each other through the three-way valve 8 on the outflow side and the inflow side, and each indoor unit is connected by a circuit of one system. Connected to 1. In addition, each indoor unit 1
Are connected in parallel with each other, a flow control valve 9 is provided on each inflow side, and an opening / closing valve 10 is provided on a path bypassing the flow control valve 9. That is, the flow rate control valve 9 is a well-known temperature-sensitive type flow rate control valve used at the time of heating, and although the detailed description is omitted, the flow rate control valve 9 is configured so that the opening degree of the valve mechanically changes according to the ambient temperature. ing. Since the flow rate control valve 9 is for heating, the opening / closing valve 10 is opened during cooling so that the heat medium is circulated without passing through the flow rate control valve 9. Therefore, the on-off valve 10 is closed during heating.

When performing the heating operation in the air conditioner of the present embodiment, the warm water generated in the boiler 6 is used for each indoor unit 1
And the indoor air is heated by the heat exchanger 3 of each indoor unit 1. At that time, the radiant heat is released from the front surface of the heat exchanger 3, but the indoor air is the air flow passage 3f in the indoor unit 1.
Heating is also performed by allowing natural convection of the heat medium and exchanging heat with hot water via the heat transfer fins 3e with the back surface side of each heat medium circulation pipe 3a. In this case, the heat transfer surface facing the indoor side of the front surface of the heat exchanger 3 is bent into a corrugated shape as described above, or a separate heat transfer fin is attached to further improve the heat exchange efficiency. be able to.

When the cooling operation is performed, the cold water generated by the refrigerator 7 circulates in each indoor unit 1, and the heat exchanger 3 of each indoor unit 1 cools the indoor air. In this case, by turning on the switch 4c and operating the blower 4, the indoor air is forcibly sucked into the indoor unit 1 and transmitted to the back side of each heat medium flow pipe 3a while flowing through the air flow passage 3f. After being cooled by the heat fins 3e, the air discharge port 2a
Is blown out from. The condensed water condensed on the heat exchanger 3 is received by the drain pan 5 and discharged to the outside through the drain port 5a.

As described above, according to the air conditioner of this embodiment, radiant heat is emitted from the front surface of the heat exchanger 3 during heating, and the blower 3 is operated to cool the rear surface of the heat exchanger 3 during cooling. Since the indoor air is circulated in the provided air flow passage 3f so that the radiant heat can be absorbed, the depth dimension of the indoor unit 1 can be made extremely small, and the heating and cooling can be performed without increasing the indoor installation space. You can do both. The blower 3 may be appropriately operated not only during cooling but also during heating.

7 and 8 show an example in which the air outflow side of the air flow passage 3f, that is, the air outlet 2a of the indoor unit 1 is provided with outflow direction switching means for switching the outflow direction of the air between the upper side and the front side. It is a schematic side view which shows each and shows the upper part of an indoor unit.

That is, as shown in FIG. 7, a movable plate 11 is provided on the upper part of the indoor unit 1 as an outflow direction switching means, and the movable plate 11 is attached to the peripheral surface of the blower 4 during cooling as shown in FIG. 7 (a). The air is discharged obliquely forward by pulling it along, and during heating, the movable plate 11 is retracted to the rear side of the indoor unit 1 to discharge the air upward as shown in FIG. 7 (b). As a result, the outflow direction of air can be made appropriate according to heating and cooling, and heating efficiency and cooling efficiency can be significantly improved.

In FIG. 8, a rotatable movable plate 12 is provided at the upper part of the indoor unit 1 as the outflow direction switching means. During cooling, the movable plate 12 is used as the indoor unit as shown in FIG. 8 (a). By rotating to the front side of 1, the front side opening is closed and the top side opening is opened, and air is discharged upward. Further, during heating, as shown in FIG. 8 (b), the movable plate 12 is rotated to the rear side of the indoor unit 1 to close the opening on the upper surface side and open the opening on the front surface side, thereby removing air. Discharge diagonally forward.

Instead of the movable plates 11 and 12, a louver may be provided at the air discharge port 2a so that each blade of the louver can be rotated from the upper side to the front side.

9 and 10 show a second embodiment of the present invention. FIG. 9 is a schematic side view of an indoor unit, and FIG. 10 is a circuit configuration diagram of an air conditioner. The same components as those in the above embodiment are designated by the same reference numerals.

In this embodiment, the heat exchanger is provided with a total of two heat exchanging portions for circulating hot water and cold water, respectively, and dehumidifying operation can be performed by simultaneously circulating hot water and cold water through the heat exchanger. .

That is, in the indoor unit 13 shown in the figure, the heat exchanger 14 has a total of eight heat medium distribution pipes 14a stacked vertically, and the four heat medium distribution pipes 14a in the upper part distribute hot water. Which constitutes the high temperature side heat exchanging portion 14b, and a total of four heat medium circulation pipes 14a below constitute a low temperature side heat exchanging portion 14c which circulates cold water. In addition, each heat medium flow pipe 1
A heat transfer fin 14d is provided on the back side of 4a, and the air flow passage 14e is formed by the space in which the heat transfer fin 14d is arranged.
Are formed.

The indoor unit 13 configured as described above is connected to the boiler 6 and the refrigerator 7, and the hot water produced by the boiler 6 and the cold water produced by the refrigerator 7 are circulated respectively. There is. That is, FIG. 10 shows an example including a plurality of indoor units 13, the boiler 6 is connected to the high temperature side heat exchange section 14 b of each indoor unit 13, and the refrigerator 7 is connected to each indoor unit 13.
Is connected to the low temperature side heat exchange section 14c. Further, the indoor units 13 are connected in parallel with each other, and the high temperature side heat exchange unit 14
The flow rate control valve 15 similar to that of the first embodiment is provided on the inflow side of b.
Is provided.

When performing the heating operation in the air conditioner of the present embodiment, the warm water generated in the boiler 6 is used for each indoor unit 1
3, the indoor air is heated by the high temperature side heat exchange section 14b of the heat exchanger 14.

Next, when the cooling operation is performed, the cold water generated in the refrigerator 7 circulates in each indoor unit 13 and the heat exchanger 14
Room air is cooled by the low temperature side heat exchange part 14c. Also in this case, as in the first embodiment, by operating the blower 4, the indoor air is forcibly sucked into the indoor unit 13 and blown out from the air discharge port 2a.

When the dehumidifying operation is performed, the hot water generated in the boiler 6 is used as the high temperature side heat exchange section 14b of the heat exchanger 14.
The cold water generated in the refrigerator 7 circulates in the low temperature side heat exchange section 14c of the heat exchanger 14. Then, by operating the blower 4, the indoor air is forcibly sucked into the indoor unit 13 and blown out from the air discharge port 2a. At that time, the air sucked into the indoor unit 13 is cooled in the low temperature side heat exchange section 14c to remove water, and then heated in the high temperature side heat exchange section 14b.

As described above, according to the air conditioner of the present embodiment, since the heat exchanger 14 is provided with the two heat exchanging portions 14b and 14c for circulating hot water and cold water, the heat exchanger 14 is provided with hot water. The dehumidifying operation can be performed by circulating the cold water at the same time, and the function as the air conditioner can be significantly enhanced.

11 and 12 show a third embodiment of the present invention. FIG. 11 is a plan sectional view of an indoor unit, and FIG.
Is a schematic side view thereof. The same components as those in the above embodiment are designated by the same reference numerals.

In this embodiment, as in the second embodiment, the heat exchanger is provided with two heat exchanging portions for circulating hot water and cold water, respectively, and hot water and cold water are simultaneously passed through the heat exchanger to perform dehumidification operation. It is made possible to do.

That is, in the indoor unit 16 shown in the figure, the heat exchanger 17 is provided with a total of four heat medium flow pipes 17a arranged on the front side and the rear side, respectively, and a total of four heat medium flow tubes 17a on the front side.
The four heat medium flow pipes 17a constitute a high temperature side heat exchange section 17b for circulating hot water, and a total of four heat medium flow pipes 17 on the back side are provided.
a constitutes a low temperature side heat exchange section 17c for circulating cold water. Further, heat transfer fins 17d are provided on the facing surfaces of the respective heat medium flow tubes 17a, and an air flow passage 17e is formed by the space where the heat transfer fins 17d are arranged.

The indoor unit 16 configured as described above is the second
The hot water is circulated in the high temperature side heat exchange section 17b of the heat exchanger 17, and the cold water is circulated in the low temperature side heat exchange section 17c.

That is, in the present embodiment, when the heating operation is performed, the indoor air is heated by the high temperature side heat exchange section 17b of each indoor unit 16, and when the cooling operation is performed, the low temperature side heat exchange of each indoor unit 16 is performed. The room air is cooled by the portion 17c. When performing the dehumidifying operation, warm water is supplied to each indoor unit 1
6, which circulates through the high temperature side heat exchange section 17b, and cools the indoor unit 1
It circulates through the low temperature side heat exchange part 17c. As a result, the air taken into the indoor unit 16 receives the low temperature side heat exchange section 17c.
In addition to being cooled to remove moisture, it is heated in the high temperature side heat exchange section 17b.

As described above, according to the air conditioner of the present embodiment, since the heat exchanger 17 is provided with the two heat exchange parts 17b and 17c for circulating hot water and cold water, the same as in the second embodiment. The dehumidification operation can be performed by circulating hot water and cold water through the heat exchanger 17 at the same time. Further, since the low temperature side heat exchange section 17c is arranged on the back side in the indoor unit 16, no condensation occurs on the front side of the heat exchanger 17 during cooling or dehumidification, and water droplets are attached to the contacted matter from the outside. It can be surely prevented.

13 to 15 show a fourth embodiment of the present invention. FIG. 13 is a plan sectional view of an indoor unit, and FIG.
Is a schematic side view thereof, and FIG. 15 is a circuit configuration diagram of the air conditioner. The same components as those in the above embodiment are designated by the same reference numerals.

In the indoor unit 18 shown in the figure, the heat exchanger 19 has a total of four heat medium flow tubes 19a formed in a flat plate shape and the corrugated heat transfer fins provided on the back side thereof, as in the above embodiment. A front side heat exchange section 19c composed of 19b;
It is composed of a back side heat exchange section 19f composed of a continuous heat medium flow pipe 19d bent in a meandering shape and a large number of heat transfer fins 19e provided around the heat medium flow tube 19d at intervals, and the front side heat exchange section 19c is a room The rear side heat exchange section 19f is arranged on the front side of the machine 18, and the rear side heat exchange section 19f is arranged on the rear side of the indoor unit 18, respectively.

The indoor unit 18 configured as described above is connected to the boiler 6 and the refrigerator 7 as shown in FIG. 15, and stores hot water produced by the boiler 6 and cold water produced by the refrigerator 7. It is distributed as an alternative. That is, similarly to the first embodiment, the boiler 6 and the refrigerator 7 are connected to the outflow side and the inflow side via the three-way valve 8, and are connected to each indoor unit 18 by a single system circuit. Further, the indoor units 18 are connected in parallel with each other, and the flow control valve 9 and the opening / closing valve 10 are provided on the respective inflow sides,
Similar to the first embodiment, hot water is circulated through the flow rate control valve 9 during heating, and open / close valve 10 is opened during cooling to circulate cold water without passing through the flow rate control valve 9. In the heat exchanger 19, the front-side heat exchange section 19c is arranged on the heat medium inflow side and the back-side heat exchange section 19f is arranged on the outflow side, and the heat exchange sections 19c and 19f are connected in series with each other. Inflow side of front side heat exchange section 19c and rear side heat exchange section 1
A path that bypasses the front side heat exchange section 19c is provided between the inflow side of 9f and the three-way valve 20.

When performing the heating operation in the air conditioner of the present embodiment, the three-way valve 20 is opened to the front side heat exchange section 19c so that the hot water generated in the boiler 6 is in front of the heat exchanger 19. Side heat exchange section 19c and rear side heat exchange section 1
9f is sequentially circulated, and the air is heated by both of the heat exchange sections 19c and 19f.

When performing the cooling operation, the three-way valve 20
To the rear side heat exchange section 19f side, the cold water generated in the refrigerator 7 flows through the rear side heat exchange section 19f without passing through the front side heat exchange section 19c of the heat exchanger 19, and the rear side The air is cooled only by the heat exchange section 19f.

As described above, according to the air conditioner of this embodiment, the side heat exchanger 19 is composed of the front side heat exchange section 19c located on the front side and the back side heat exchange section 19f located on the back side. However, since the hot water is allowed to flow through both the front side heat exchange section 19c and the back side heat exchange section 19f, and the cold water is allowed to flow only through the back side heat exchange section 19f, the front side of the heat exchanger 19 is cooled during cooling. Condensation does not occur, and at the time of heating, not only the front side heat exchange section 19c but also the rear side heat exchange section 19c.
Since the air is also heated by f, the heating capacity can be improved. In addition, as the back side heat exchange section, the third
As in the above embodiment, the front heat exchange portion 19c and the one having a symmetrical shape may be opposed to each other.

[0044]

As described above, according to the air conditioner of the first aspect of the present invention, heating and cooling can be performed with a depth dimension almost equal to that of the conventional panel type heating device which radiates heat from the front surface during heating. Since both can be performed, the installation space in the room can be significantly reduced, and a comfortable heating and cooling space can be provided.

According to the air conditioner of claim 2,
In addition to the effect of the first aspect, it is possible to dehumidify the indoor air, so that the function as an air conditioner can be remarkably enhanced.

Further, according to the air conditioner of claim 3,
In addition to the effect of the second aspect, dew condensation does not occur on the front surface side of the heat exchanger during cooling or dehumidification, so that it is possible to reliably prevent water droplets from adhering to a contact material from the outside.

According to the air conditioner of claim 4,
In addition to the effect of claim 1, since dew condensation does not occur on the front side of the indoor heat exchanger during cooling, it is possible to reliably prevent water droplets from adhering to the contacting matter from the outside, and further, during heating. Since the air is heated not only by the front side heat exchange section but also by the rear side heat exchange section, it is possible to improve the heating capacity.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an indoor unit of an air-conditioning apparatus showing a first embodiment of the present invention.

FIG. 2 is a plan sectional view of the indoor unit.

FIG. 3 is a partially enlarged perspective view of a heat exchanger.

FIG. 4 is a schematic front view of an indoor unit.

FIG. 5 is a schematic side view of the indoor unit.

FIG. 6 is a circuit configuration diagram of the air conditioner.

FIG. 7 is a schematic side view showing the upper part of the indoor unit.

FIG. 8 is a schematic side view showing the upper part of the indoor unit.

FIG. 9 is a schematic side view of an indoor unit of an air-conditioning apparatus showing a second embodiment of the present invention.

FIG. 10 is a circuit configuration diagram of the air conditioner.

FIG. 11 is a plan cross-sectional view of an indoor unit showing a third embodiment of the present invention.

FIG. 12 is a schematic side view of the indoor unit.

FIG. 13 is a plan cross-sectional view of an indoor unit showing a fourth embodiment of the present invention.

FIG. 14 is a schematic side view of the indoor unit.

FIG. 15 is a circuit configuration diagram of the air conditioner.

[Explanation of symbols]

1 ... Indoor unit, 3 ... Heat exchanger, 3e ... Heat transfer fin, 3f ...
Air flow passage, 4 ... Blower, 6 ... Boiler, 7 ... Refrigerator, 1
1, 12 ... Movable plate, 13 ... Indoor unit, 14 ... Heat exchanger, 1
4b ... High temperature side heat exchange section, 14c ... Low temperature side heat exchange section, 14
d ... Heat transfer fins, 14e ... Air flow passage, 16 ... Indoor unit,
17 ... Heat exchanger, 17b ... High temperature side heat exchange section, 17c ... Low temperature side heat exchange section, 17d ... Heat transfer fin, 17e ... Air flow passage, 19 ... Heat exchanger, 19b ... Heat transfer fin, 19c ... Front side Heat exchange part, 19e ... Heat transfer fin, 19f ... Back side heat exchange part.

Continuation of the front page (72) Inventor Sanano Tanno 20 Sandu Stock Association, 20 Kotobukicho, Isesaki City, Gunma In-house

Claims (5)

[Claims] 1. An indoor heat exchanger having a heat transfer surface having a front surface facing the indoor side and an air flow path having heat transfer fins arranged on the back side; and an indoor air flow path of the indoor heat exchanger. An air blower for circulating air, and a heat medium supply means for selectively supplying a high temperature side heat medium for heating the indoor air and a low temperature side heat medium for cooling the indoor air to the indoor heat exchanger An air conditioner characterized by that. 2. An indoor heat exchanger having a heat transfer surface having a front surface facing the indoor side and an air flow path having heat transfer fins arranged on the back side; and an indoor air flow path for the indoor heat exchanger. A blower that circulates air, a high-temperature side heat medium supply unit that supplies a high-temperature-side heat medium for heating the indoor air to the indoor-side heat exchanger, and a low-temperature side that cools the indoor air to the indoor-side heat exchanger. The low temperature side heat medium supply means for supplying the heat medium is provided, and the indoor side heat exchanger is constituted by a high temperature side heat exchange section for circulating the high temperature side heat medium and a low temperature side heat exchange section for circulating the low temperature side heat medium. An air conditioner characterized by the above. 3. The air conditioner according to claim 2, wherein the high temperature side heat exchange section of the indoor side heat exchanger is arranged on the front side, and the low temperature side heat exchange section is arranged on the rear side. 4. An indoor heat exchanger having a heat transfer surface having a front surface facing the indoor side and an air flow path having heat transfer fins disposed on the back side; and an indoor air flow path of the indoor heat exchanger. An air blower for circulating air, and a heat medium supply means for selectively supplying a high temperature side heat medium for heating the indoor air and a low temperature side heat medium for cooling the indoor air to the indoor heat exchanger The indoor side heat exchanger is composed of a front side heat exchange section located on the front side and a rear side heat exchange section located on the rear side, and the high temperature side heat medium is connected to the front side heat exchange section and the rear side heat exchange section. An air conditioner characterized in that it is circulated to both sides, and the low temperature side heat medium is circulated only to the back side heat exchange section. 5. The outflow direction switching means for switching the outflow direction of the air between the upper side and the front side on the air outflow side of the air flow passage, according to claim 1, 2, 3 or 4. Air conditioner.