JP2002243219A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of ensuring an adequate amount of humidification. SOLUTION: In the air conditioner, an indoor refrigerant heat exchanger 23 divided into a plurality of heat exchanging parts 23A, 23B and 23C and an indoor hot water heat exchanger 24 are arranged in an outer jacket body and a cross-flow fan 26 is disposed inside these heat exchangers. A vaporizing humidifier 45 is inserted between the indoor refrigerant heat exchanger 23 and the indoor hot water heat exchanger 24. Humidifying water piping for supplying water to the vaporizing humidifier 45 is attached to the indoor hot water heat exchanger 24. Humidifying water supplied to the vaporizing humidifier is heated by using the heat of the indoor hot water heat exchanger 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air conditioner provided with a vaporizing humidifier.

[0002]

2. Description of the Related Art In general, there is known a wall-mounted air conditioner in which a heat exchanger divided into a plurality of heat exchangers is arranged inside an outer package and a cross flow fan is arranged inside the heat exchanger. I have. In an air conditioner of this type, in order to suppress indoor drying, hot water circulating between a hot water heat exchanger and a heat source device during a heating operation as in the invention described in JP-A-9-26152. There is one in which a part is dropped on the surface of the hot water heat exchanger and naturally evaporated to humidify the room.

[0003]

SUMMARY OF THE INVENTION In the air conditioner described in the above publication, calcium in the hot water evaporated on the surface of the hot water heat exchanger becomes white powder and adheres to the surface of the hot water heat exchanger. There are cases. For this reason, the heat exchange efficiency of the hot water heat exchanger may decrease, and the hot water heat exchanger may have a short life. Further, in the method of evaporating on the surface of the hot water heat exchanger, there is a problem that it is difficult to secure a sufficient humidification amount. On the other hand, these problems can be solved by using a vaporizing humidifier.

[0004] When supplying water to this vaporizing humidifier, it is known that increasing the temperature of the water increases the humidification amount. However, if a heater or the like is installed to raise the water temperature, the running cost will increase. There is a problem such as rise.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, to increase running costs without increasing running costs, to secure a sufficient amount of humidification, and to increase humidification performance. An object of the present invention is to provide an air conditioner that can be used.

[0006]

According to the first aspect of the present invention, a refrigerant is divided and divided into a plurality of heat exchanging portions which are arranged across a front side space and an upper side space formed inside an exterior body. A refrigerant heat exchanger that heats or cools air, and a hot water heat exchanger that guides hot water from a heat source device to heat air are provided, and a heat exchanger and a hot water that constitute the refrigerant heat exchanger are provided in the upper space. A heat exchanger and a heat exchanger are arranged in a U shape, a cross flow fan is arranged inside these heat exchangers, and a vaporizing humidifier is provided in the gap between the heat exchange part and the hot water heat exchanger arranged in the U shape. Is inserted and arranged toward the cross flow fan, and a humidifying water pipe to the vaporizing humidifier is incorporated and arranged in the hot water heat exchanger.

According to a second aspect of the present invention, in the first aspect, the hot water heat exchanger comprises a fin-and-tube heat exchanger, and the hot water heat exchanger includes a plurality of path groups. At least one path is directed to a humidifying water pipe to the vaporizing humidifier.

According to a third aspect of the present invention, in the second aspect, a humidifying water pipe to the vaporizing humidifier passes through a heat transfer tube of the hot water heat exchanger, and an inner wall surface of the heat transfer tube. It is characterized by being closely adhered to.

The invention described in claim 4 is the first to third aspects of the present invention.
In any one of the above aspects, a heat exchanger that constitutes the refrigerant heat exchanger is overlapped on a primary side of the hot water heat exchanger.

[0010] The invention described in claim 5 provides the invention according to claims 1 to 4.
In any one of the above aspects, a part of the supply water supplied to the heat source device is guided to the evaporative humidifier.

In these inventions, the vaporizing humidifier is inserted and arranged on the secondary side of the heat exchanger and between the heat exchanger of the refrigerant heat exchanger and the hot water heat exchanger. Is located at the junction of warm air after passing through each heat exchange section and hot water heat exchanger, and the pipe for supplying water to the evaporative humidifier passes through the hot water heat exchanger, so the hot water flowing to the hot water heat exchanger Heat heats the water supplied to the evaporative humidifier, and the warm water heated by the hot water heat exchanger is supplied to the evaporative humidifier, so that a sufficient amount of humidification is secured and the water is heated by the heat exchanger. The humidification efficiency of the heated air can be improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing an embodiment of an air conditioner according to the present invention.

As shown in FIG. 1, the air conditioner 10
Has an outdoor unit 11, an indoor unit 12, and a hot water supply unit 13. An outdoor refrigerant pipe 14 of the outdoor unit 11 and an indoor refrigerant pipe 15 of the indoor unit 12 are connected via connection pipes 16 and 17. .

The outdoor unit 11 is disposed outside the room,
A compressor 18 is provided in the outdoor refrigerant pipe 14, and an accumulator 19 and a muffler 20 are sequentially provided on the suction side of the compressor 18 in the outdoor refrigerant pipe 14 from the compressor 18 side. The outdoor heat exchanger 21 and the electric expansion valve 22 are sequentially arranged on the discharge side of the compressor 18 from the compressor 18 side.

An outdoor fan (not shown) for blowing air toward the outdoor heat exchanger 21 is disposed adjacent to the outdoor heat exchanger 21.

The indoor unit 12 is installed indoors,
An indoor refrigerant heat exchanger 23 is provided in the indoor refrigerant pipe 15 and an indoor hot water heat exchanger 24 is provided.
These indoor refrigerant heat exchanger 23 and indoor hot water heat exchanger 2
4 constitutes an indoor heat exchanger 25. In the indoor unit 12, a cross flow fan 26 that blows indoor air to the indoor heat exchanger 25 is disposed near the indoor heat exchanger 25 (see FIG. 2).

The hot water supply unit 13 has a heat source unit 27, which heats water supplied from a heat source unit water supply pipe 28 to produce hot water. The hot water can be discharged from a faucet (not shown) to the outside, and can be circulated between the indoor hot water heat exchanger 24 of the indoor unit 12 and the heat source device 27.

That is, the heat source unit 27 and the indoor hot water heat exchanger 2
4 is connected by a hot water outgoing pipe 29 for sending hot water from the heat source unit 27 to the indoor hot water heat exchanger 24, and a hot water return pipe 30 for returning hot water from the indoor hot water heat exchanger 24 to the heat source unit 27. A variable flow rate valve 31 for adjusting the flow rate of the hot water flowing through the hot water outflow pipe 29 is provided in the hot water outflow pipe 29. From the heat source unit 27 to the indoor hot water heat exchanger 24
By supplying hot water to the room, the room air passing through the room hot water heat exchanger 24 is heated by heat exchange.

When a cooling operation is selected and commanded by a remote controller or the like (not shown), the control unit (not shown) closes the variable flow rate valve 31 and operates the compressor 18 and the outdoor fan of the outdoor unit 11. And the cross flow fan 26 is started. Accordingly, the indoor refrigerant heat exchanger 23 of the indoor unit 12 functions as an evaporator, and the indoor air introduced into the indoor unit 12 is cooled by the indoor refrigerant heat exchanger 23 to cool the room.

When a heating operation is selected and commanded by a remote controller or the like, the outdoor unit 11
Compressor 18, outdoor fan and cross flow fan 26
Is stopped, and the variable flow valve 31 is opened to circulate the hot water from the heat source unit 27 with the indoor hot water heat exchanger 24. The indoor hot water heat exchanger 24 heats the indoor air guided into the indoor unit 12 by the cross flow fan 26 to heat the room.

Here, in the control device, in the above-described cooling operation or heating operation, the room temperature detected by the room temperature sensor 32 installed in the indoor unit 12 substantially matches the set temperature set by the remote controller or the like. Thus, the cooling operation or the heating operation is controlled.

As shown in FIG. 2, the indoor unit 12 is mounted on a wall or the like of a room. This indoor unit 12
The rear exterior body 35 mainly covers the back side, and the front exterior body 36 mainly covers the front side. The rear exterior body 35 and the front exterior body 36 constitute an exterior body, and the indoor refrigerant heat exchanger 23, the indoor hot water heat exchanger 24, the cross flow fan 26, and the like are housed in a space surrounded by the exterior body. Is done.

The front exterior body 36 has an air suction port 37.
A, 37B, and 37C are formed, and the front exterior body 36 is configured to be detachable or openable from the rear exterior body 35. Further, an air outlet 38 is formed between the rear exterior body 35 and the front exterior body 36.

The indoor refrigerant heat exchanger 23 is divided into three heat exchange sections 23A, 23B and 23C. The first heat exchange section 23A is provided in the front side space A formed inside the exterior body.
Is arranged in the upper surface side space B, and the second heat exchange portion 23B and the hot water heat exchanger 24 are arranged in a C shape in the figure, and the third heat exchange portion is provided on the primary side of the hot water heat exchanger 24. The parts 23C are arranged in an overlapping manner. And these heat exchangers 23, 24
The cross flow fan 26 is arranged inside the.

The first heat exchange section 23A and the second heat exchange section 23B
Is received by the front drain receiver 41, and the drain of the third heat exchange unit 23C and the indoor hot water heat exchanger 24 is received by the rear drain receiver 43.

As shown in FIG. 2, a gap is formed between the second and third heat exchange portions 23B and 23C arranged in a C shape, and the gap is sucked by the cross flow fan 26. A vaporizing humidifier 45 is inserted and arranged along the flow direction of the air. As shown in FIG. 4, the vaporizing humidifier 45 includes a case 46 extending to the full width of the second heat exchange unit 23B, and a humidifying element 47 detachably inserted into the case 46. Be composed.

The case 46 includes a second heat exchange section 23B,
Flanges (gap seal portions) 51 and 52 are provided which are locked to the upper edge of the hot water heat exchanger 24. The flanges 51 and 52 are made of, for example, a soft resin, and the second heat exchange portion 23B is formed by the flanges 51 and 52. The gap between the hot water heat exchanger 24 is hermetically sealed. Therefore, there is no air leakage from the gap between the second heat exchange unit 23B and the hot water heat exchanger 24.

As shown in FIGS. 2 and 3, a dome-shaped head 46A is formed in the case 46, and a water sprinkling pipe 46B is provided in the dome-shaped head 46A. As shown in FIG. 4, a humidifying water pipe 53 is connected to the sprinkling pipe 46B. The humidifying water pipe 53 guides a part of the water supplied to the heat source device 27 (FIG. 1). ) Is connected, and a heat operated valve 44 is connected to the humidification water supply pipe 40. The humidification water supply pipe 40 is in contact with at least one of a hot water outflow pipe 29 for sending hot water from the heat source unit 27 to the hot water heat exchanger 24 and a hot water return pipe 30 for returning hot water from the hot water heat exchanger 24 to the heat source unit 27. It is desirable to be arranged.

As shown in FIG. 5, the humidification water pipe 53 is incorporated in the indoor hot water heat exchanger 24 and arranged.
The heat exchanger 24 according to the present embodiment is a fin-and-tube heat exchanger, and the fin group 24 </ b> C
And the heat transfer tubes (tubes) 24
A and 24B are inserted. The hot water heating tube 24A is constituted by a lower multi-stage path, and
A series of flow paths are formed by welding or brazing with a vent pipe, and the hot water heating tube 24A includes:
Hot water flows from the heat source unit 27 via the hot water outflow pipe 29.

The humidifying tube 24B is a single path provided above the indoor hot water heat exchanger 24. The humidifying water pipe 53 is provided inside the humidifying tube 24B.
Is press-fitted. This humidification water pipe 53 penetrates the humidification tube 24B, and is connected to the water sprinkling pipe 46B as shown in FIG. The water flowing into the water sprinkling pipe 46B is a part of water supplied to the heat source unit 27 (FIG. 1), and is clean water (water supply) before being supplied to the heat source unit 27.

In the present embodiment, the heat of the hot water flowing through the hot water heating tube 24A is transmitted to the humidifying tube 24B through the fins 24C, and the humidifying tube 24B is heated.
Since 4B and the humidification water pipe 53 are in contact, the water or warm water flowing through the humidification water pipe 53 is warmed. For example, hot water of about 80 ° C. flows from the heat source unit 27 into the inlet of the hot water heating tube 24A, and the temperature of the hot water near the outlet of the hot water heating tube 24A becomes about 50 to 60 ° C. When humidified water flows in the temperature zone of the hot water heat exchanger 24, the water of about 10 ° C becomes about 30 to 40 ° C. Therefore, the hot water heated by the hot water heat exchanger 24 is supplied to the vaporizing humidifier 45, so that a sufficient amount of humidification is ensured there, and the humidifying efficiency of the air warmed by the heat exchangers 23B, 24B, and 23C. Can be significantly improved.

The humidifying tube 24B itself may be replaced by the humidifying tube without inserting the humidifying tube 53 into the humidifying tube 24B.

However, when the humidifying tube 24B is inserted into the holes of the fin group at the time of manufacturing the heat exchanger, a so-called ball expansion type is adopted. In this case, since lubricating oil is used to prevent abrasion due to friction between the tube and a ball (metal ball or the like), oil or the like may remain in the tube. When flowing humidified water, it is important to wash the inside of this tube.

As shown in FIG. 2, the hot water heat exchanger 24 is disposed so as to overlap the third heat exchange section 23C of the indoor refrigerant heat exchanger 23, and is held by the third heat exchange section 23C. The temperature is about 60 ° C. The heat capacity of the third heat exchange unit 23C is also added to the warming of the warm water flowing through the humidifying water pipe 53,
The temperature of the hot water can be further raised and maintained.

The hot water from the sprinkler tube 46B collides with the inner wall of the dome-shaped head 46A, flows out along the dome shape, and is dropped onto the humidifying element 47 which is arranged obliquely. Thereby, the humidifying element 47
A reliable drop is ensured. The hot water dropped here humidifies the warm air that has passed through the heat exchangers 23 and 24, and the residual water is received by the residual water receiving portion 46C. The residual water collected in the residual water receiving section 46C is collected in the back drain receiver 43 of the third heat exchange section 23C through the residual water channel 46D. It should be noted that, as is clear from FIG.
At both ends.

The humidifying element 47 is housed in an element holder 48, and a handle 48A is formed in the element holder 48. Then, as shown in FIG. 3, when the front exterior body 36 is opened, the humidifying element 47 faces the front surface of the exterior body together with the element holder 48 so as to be able to be taken out.

The humidifying element 47 is made of a material that easily contains moisture, such as a sponge. When air passes through the humidifying element 47, the humidifying element 47
The water inside is naturally evaporated, and the air blown into the room from the air outlet 38 is humidified. This humidification is mainly performed during the heating operation of the air conditioner 10.

As shown in FIG. 1, the humidifying water supply pipe 40 for supplying water to the humidifying element 47 is branched from the heat source equipment water supply pipe 28, and is clean before being supplied to the heat source equipment water supply pipe 28. The water supply is guided to the humidifying element 47 via the humidifying pipe 53. The humidification water supply pipe 40
Is provided with a thermal valve 44 for adjusting the flow rate of water flowing in the humidification water supply pipe 40. The amount of water supplied to the humidifying element 47 is controlled by adjusting the opening of the thermal valve 44.

The control device (not shown) opens the thermal valve 44 when a humidification operation is selected and commanded by a remote controller (not shown). Then, the control device controls the humidity sensor 4 installed in the indoor unit 12.
2 so that the room humidity detected in 2 substantially matches the set humidity set in the remote controller or the like.
Adjust the opening of 4.

With the above configuration, the following effects are obtained according to the above embodiment.

Since the evaporative humidifier 45 is disposed on the secondary side of the heat exchanger 23 and between the heat exchanger 23 and the cross flow fan 26, the air heated by the heat exchanger 23 For example, a sufficient humidification amount of 300 cc / h or more can be given. In particular, the second and third heat exchange units 23B, 2
Since the evaporative humidifier 45 is inserted and disposed between 3C, the evaporative humidifier 45 is located at the junction of the warm air after passing through each of the heat exchange units 23B and 23C, so that the humidification efficiency is further improved. I do.

Since the humidifying water is supplied to the humidifying element 47 and evaporated, the calcium in the evaporated water adheres to the humidifying element 47, and is supplied to the indoor hot water heat exchanger 24.
Does not adhere to the surface of As a result, the heat exchange efficiency of the indoor hot water heat exchanger 24 does not decrease due to the adhered calcium, so that the life of the indoor hot water heat exchanger 24 can be ensured satisfactorily.

Humidifying element 47 to which calcium has adhered
As described later, the water evaporating performance can be ensured well by appropriately replacing the water as described below.

The water supplied to the humidifying element 47 is
Since the water is a part of the water supplied to the heat source unit 27, the water evaporated in the humidifying element 47 is not the dirty water circulated between the heat source unit 27 and the indoor hot water heat exchanger 24, but the heat source. Clean water (water supply) before being supplied to the machine 27. For this reason, even when the room is humidified by the humidification element 47, the cleanliness of the room air can be kept good.

Since the humidification water supply pipe 40 for supplying water to the humidification element 47 is disposed in contact with the hot water outflow pipe 29 and the hot water return pipe 30 connected to the indoor hot water heat exchanger 24, the humidification element 47 is provided. The water supplied to
Heat is exchanged by the hot water in the hot water outgoing pipe 29 and the hot water return pipe 30 to increase the temperature. As a result, spontaneous evaporation of the water supplied to the humidifying element 47 is promoted, and the humidifying element 47 can quickly humidify the room.

From the humidification water supply pipe 40 to the humidification element 4
Since the humidification water pipe 53 for supplying hot water to the humidifier 7 penetrates the inside of the humidification tube 24B of the indoor hot water heat exchanger 24 and is disposed in contact with the humidification tube 24B, it is supplied to the humidification element 47. Is supplied to the indoor hot water heat exchanger 24.
The heat of the hot water flowing through the hot water heating tube 24A is transmitted, and the temperature further rises than the hot water flowing through the humidification water supply pipe 40. As a result, spontaneous evaporation of the water supplied to the humidifying element 47 is promoted, and the humidifying element 47 can quickly humidify the room.

Since the third heat exchange section 23C of the indoor refrigerant heat exchanger 23 is disposed on the indoor hot water heat exchanger 24, the heat quantity of the third heat exchange section 23C is
The temperature of the hot water transmitted to the humidifying tube 24B and flowing through the humidifying water pipe 53 penetrating the inside of the humidifying tube further rises and is maintained. As a result, spontaneous evaporation of the water supplied to the humidifying element 47 is promoted, and the humidifying element 47 can quickly humidify the room.

The front exterior body 36 is provided in front of the indoor refrigerant heat exchanger 23 so that the front exterior body 36 can be opened and closed or detachable. The humidifying element 47 facing the can be easily replaced.

Although the present invention has been described based on the above embodiment, the present invention is not limited to this.

For example, a gap is formed between the first heat exchanging section 23A and the second heat exchanging section 23B.
5 may be inserted and arranged.

Although the humidification water supply pipe 40 is described as being in contact with both the hot water outgoing pipe 29 and the hot water return pipe 30, it may be in contact with either one of the hot water outgoing pipe 29 and the hot water return pipe 30. . In the air conditioner 10, the hot water supply unit 13 has been described as being installed separately from the outdoor unit 11, but may be arranged inside the outdoor unit 11. Further, the thermal valve 44 may be a normal control valve whose opening is adjusted by the control device.

[0053]

According to these inventions, since the evaporative humidifier is disposed on the secondary side of the heat exchanger and between the heat exchanger and the cross flow fan, it is heated by the heat exchanger. A sufficient amount of humidification can be given to air. Also, if a vaporizing humidifier is inserted between the heat exchange units, this vaporization humidifier will be located at the junction of warm air after passing through each heat exchange unit, improving humidification efficiency Can be done. Furthermore, the water flowing through the evaporative humidifier penetrates the heat exchanger, and the heat of this heat exchanger acts on the water flowing through the evaporative humidifier, and the hot water warmed by the heat exchanger passes through the evaporative humidifier. By flowing, humidification efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of an air conditioner according to the present invention.

FIG. 2 is a sectional view showing an indoor unit of the air conditioner of FIG.

FIG. 3 is a sectional view showing an indoor unit of the air-conditioning apparatus of FIG.

FIG. 4 is a diagram showing a flow of humidifying water supplied to a vaporizing humidifier.

FIG. 5 is a perspective view showing an indoor hot water heat exchanger.

[Explanation of symbols]

 Reference Signs List 10 air conditioner 11 outdoor unit 13 hot water supply unit 23 indoor refrigerant heat exchanger 23A, 23B, 23C heat exchange unit 24 indoor hot water heat exchanger 24A hot water heat exchange tube 24B humidification tube 24C fin group 26 cross flow fan 27 heat source device 28 Heat source unit water supply pipe 29 Hot water outgoing pipe 30 Hot water return pipe 36 Front exterior body 40 Humidification water supply pipe 45 Vaporization humidifier 46 Case 47 Humidification element 53 Humidification water pipe

Claims (5)

[Claims] 1. A refrigerant heat exchanger that is arranged across a front space and an upper space formed inside an exterior body, is divided into a plurality of heat exchange units, guides refrigerant, and heats or cools air, and a heat source. A hot water heat exchanger that guides hot water from the machine and heats the air is provided, and in the upper surface side space, a heat exchanger and a hot water heat exchanger that constitute the refrigerant heat exchanger are arranged in a C shape. A cross-flow fan is placed inside the heat exchanger, and a vaporizing humidifier is inserted into the gap between the heat exchanger and the hot water heat exchanger, which are arranged in the shape of a letter C, facing the cross-flow fan. An air conditioner, wherein a humidifying water pipe to a humidifier is installed in the hot water heat exchanger. 2. The hot water heat exchanger is constituted by a fin-and-tube heat exchanger, and at least one of a plurality of paths of the hot water heat exchanger is transferred to the vaporizing humidifier. 2. The air conditioner according to claim 1, wherein the air conditioning apparatus is applied to the humidifying water pipe. 3. The air according to claim 2, wherein a humidifying water pipe to the vaporizing humidifier penetrates a heat transfer tube of the hot water heat exchanger and is closely attached to an inner wall surface of the heat transfer tube. Harmony equipment. 4. The air-conditioning apparatus according to claim 1, wherein a heat exchanging part constituting the refrigerant heat exchanger is arranged on a primary side of the hot water heat exchanger. 5. The air conditioner according to claim 1, wherein a part of feed water supplied to the heat source device is guided to the vaporizing humidifier.