JPH10160189A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly select the direction of the air introduced into an indoor machine and the air blown from the indoor machine, according to conditions of a house where an air conditioner is installed. SOLUTION: An indoor machine 10 is composed of a heat exchanger unit 110 where an indoor heat exchanger 6 is housed and a blower unit 120 where an indoor blower 7 is housed, and the blower unit 120 is coupled vertically or horizontally with the bottom of the exchanger unit 110, whereby diffusing direction of air from the blower unit 120 can be set to either sideway blow or downward blow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a design change of an indoor heat exchanger and an indoor fan even when the direction of conditioned air blown from the indoor fan differs depending on the house where the indoor fan is installed. The present invention relates to an air conditioner that does not need to be used and has improved versatility.

[0002]

2. Description of the Related Art Conventionally, there has been proposed an air conditioner for cooling and heating the inside of a room using a heat pump. For example, in Japanese Patent Publication No. 63-46335, an indoor unit equipped with an indoor heat exchanger and an indoor fan, a compressor, an outdoor unit-side heat exchanger, BACKGROUND ART An air conditioner having an outdoor unit or the like including a fan, an outside air inlet serving as an intake of outside air, and a damper for adjusting an intake amount of outside air is disclosed.

[0003] By adjusting the degree of opening and closing of the damper, the intake resistance of the outside air sucked into the outdoor unit through the outside air suction port is adjusted, and the amount of outside air sucked into the outdoor unit is adjusted. . At this time, since the outdoor fan is rotating regardless of the degree of opening and closing of the damper, if the amount of outside air taken into the outdoor unit fluctuates, the indoor air flows through the communication pipe by an amount corresponding to the fluctuation amount. The air is taken into the outdoor unit.

[0004]

However, the above configuration has the following problems. That is, since the indoor unit has a configuration in which the indoor heat exchanger and the indoor fan are integrally housed, the dimensions are specified as in a recent 2 × 4 construction house, etc., and a house having significantly less dead space or the like. In some cases, the installation location of the indoor unit is limited.

[0005] For this reason, it is necessary to design an indoor unit in accordance with the direction of air-conditioned air blowing, which has caused a cost increase.

Therefore, the present invention improves the versatility by eliminating the need to change the design of the indoor unit even when the direction of air-conditioned air blowing differs depending on the installation location of the indoor unit. An object is to provide an air conditioner that can be held down.

[0007]

In order to solve the above-mentioned problems, in cooling, a refrigerant is compressed by a compressor to become a high-temperature and high-pressure gas refrigerant, and exchanges heat with outside air in an outdoor heat exchanger.
Most of the liquefied gas-liquid refrigerant is sent to the heat recovery unit as a refrigerant. In the heat recovery unit, the refrigerant exchanges heat with cold indoor air that is exhausted outdoors for ventilation, and the remaining gas refrigerant is liquefied. By eliminating the gas refrigerant, the temperature of the liquid refrigerant can be further reduced, and the thermal efficiency of the cycle increases. Then, the refrigerant is sent to the pressure reducer, the flow rate of the refrigerant is reduced by the pressure reducer, the pressure is reduced and evaporated by the indoor heat exchanger, and the refrigerant exchanges heat with the air blown to each room.
As a result, the air blown to each room becomes cool air, and the rooms are cooled. Thereafter, the refrigerant returns to the compressor.

At the time of heating, the refrigerant is compressed by the compressor to become a high-temperature and high-pressure gas refrigerant, sent to the indoor heat exchanger, and exchanges heat with the air blown to each room by the indoor heat exchanger to condense. With this heat of condensation, the air blown into each room becomes warm air, and each room is heated. After that, the refrigerant is throttled by the pressure reducer and sent to the heat recovery device. In the heat recovery unit, the refrigerant exchanges heat with the warm indoor air to exhaust,
A part of the gas-liquid mixture is evaporated, and the remaining refrigerant is sent to the outdoor heat exchanger. Thereafter, the outdoor heat exchanger exchanges heat with the outside air, evaporates, and returns to the compressor.

Then, the blower unit is connected to a lower part of the heat exchanger unit. At this time, the direction of air blown from the blower unit differs from case to case depending on the construction site, so the blower unit is placed vertically or horizontally according to the construction situation, and the blower unit and heat exchanger unit are installed. And the direction of air flow of the conditioned air is set to either side blowing or downward blowing.

[0010] In addition, an air outlet of the heat exchanger unit is provided in the heat exchanger unit so that the conditioned air from the heat exchanger unit is sent to the blower unit. An inlet is provided for introducing air from the air blower unit. At this time, a lid for closing one of the inlets is provided. Then, in order to introduce the air from the heat exchange unit to the blower unit through the inlet not closed by the lid, the open inlet and the heat exchanger unit blower are aligned with each other, and the heat is removed. The exchange unit and the blower unit are connected.

Further, a heat exchanger unit inlet is detachably connected to an inlet duct for introducing air conditioned to the heat exchanger unit, and a blower duct for blowing air conditioned to the blower unit is detachable. And a blower unit blower port connected to the blower is provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a basic configuration of an air conditioner according to the present invention. The air conditioner includes compressors 1a and 1b for compressing refrigerant, outdoor heat exchangers 2a and 2b for exchanging heat between the outside air and the refrigerant, and an outdoor blower 3a for blowing outside air to the respective outdoor heat exchangers 2a and 2b. , 3b, heat exchangers 4a and 4b for exchanging heat between air and refrigerant discharged for indoor ventilation and reusing heat of the air, electric expansion valves, capillary tubes, and the like. Decompressors 5a, 5
b, indoor heat exchangers 6a and 6b for exchanging heat between air and a refrigerant blown to each room for air conditioning, and the indoor heat exchanger 6
indoor blowers 7a and 7 for blowing air harmoniously to the air blowers a and 6b
b, having four-way switching valves 8a and 8b for switching the direction of circulation of the refrigerant during cooling and heating, and accumulators 9a and 9b, each constituting two independent refrigeration cycles (one for the first floor and one for the second floor). ing.

By switching the four-way switching valves 8a and 8b, during cooling, the refrigerant is compressed by the compressors 1a and 1b, the outdoor heat exchangers 2a and 2b, the heat recovery units 4a and 4b, and the pressure reducing units 5a and 5b.
A cycle is formed by circulating in order of the indoor heat exchangers 6a and 6b, and at the time of heating, the refrigerant is compressed by the compressors 1a and 1b, the indoor heat exchangers 6a and 6b, the decompressors 5a and 5b, and the heat recovery units 4a and 4b.
A cycle in which the outdoor heat exchanger 2 is circulated in this order is formed.

The dotted and solid arrows shown along the pipe line in FIG. 1 correspond to the solid and dotted flow paths shown in the four-way switching valves 8a and 8b, respectively. The refrigerant circulates in the direction of the dotted arrow during heating.

If it is necessary to adjust the flow rate of the refrigerant flowing through the indoor heat exchangers 6a and 6b,
It is also possible to add a refrigerant flow control valve to 5b to have a refrigerant distribution function.

Further, the compressor 1a, 1b changes the gist of the present invention regardless of whether the operating capacity can be continuously varied, the operating capacity can be changed to a plurality of stages in a stepwise manner, or the operating capacity cannot be changed. Since it is not the one, it can be arbitrarily selected according to the installation of the air conditioner.

Furthermore, a strainer,
It is also possible to provide a muffler and the like, and the arrangement at that time can be a generally known arrangement, and is not shown.

It is preferable that the four-way switching valves 8a and 8b are set to the same operation mode (cooling / heating), but there is no problem even if different operation modes are selected.

FIG. 2 is a conceptual diagram when an air conditioner having the above configuration is installed in a house to form an air conditioning system for cooling and heating, and the air for the first floor provided on the floor side is shown. It consists of a conditioner and a second-floor air conditioner arranged on the ceiling side, and these configurations are the same except for the configuration of a suction chamber described later.

Each air conditioner has indoor units 10a, 10b,
Outdoor units 20a, 20b, ventilation unit 30, suction chambers 40a, 40b, branch chambers 50a, 50
b, blow-out chambers 60a and 60b, and blower 9
0 or the like.

The indoor unit 10a on the floor side is disposed in a closed space such as below the stairs.
Acting as 0a.

This eliminates the need to separately provide the suction chamber 40a, thereby making it possible to reduce the manufacturing cost.

In this embodiment, the outside air and the room air flow into the suction chambers 40a and 40b at a constant ratio regardless of whether the air conditioner is in the cooling operation or the heating operation. Is the suction chamber 40
What is necessary is just to provide a damper device etc. in a, 40b, etc.

The indoor units 10a and 10b include indoor heat exchangers 6a and 6b, decompressors 5a and 5b, and indoor blowers 7a and 7b.
And the like, and the outdoor units 20a and 20b include compressors 1a and 1b, outdoor heat exchangers 2a and 2b, outdoor blower 3
a, 3b, etc. are provided.

The ventilation unit 30 has a heat recovery unit 4
Ventilation blower 3 for taking in and exhausting a and b and indoor air
1 are provided in the exhaust duct 70.
Exhaust top 71 and outside air intake 8 of the exhaust duct 70
0 is covered with an insect-proof net or the like (not shown) so that insects or the like do not enter the room.

FIG. 3 is a side sectional view showing the internal configuration of the indoor unit 10. The indoor unit 10 includes a heat exchanger unit 110 in which the indoor heat exchanger 6 is provided with decompressors 5a and 5b such as capillary tubes, and a blower unit 120 in which the indoor blower 7 is provided.

The upper end of the indoor heat exchanger 6 provided in the heat exchanger unit 110 is attached to the top plate 113, and the lower end is a drain pan 1 for receiving dew from the indoor heat exchanger 6 or the like.
16.

On the lower surface of the heat exchanger unit 110, there is provided a heat exchanger unit blow-off port 117 for blowing out the air conditioned by the indoor heat exchanger 6.

On the other hand, the blower unit 120 has a blower unit blow port 121 for blowing conditioned air.
Are provided, and a blower unit inlet 122 (122a, 122a) for introducing air from the heat exchanger unit 110 to a surface provided at a right angle to the blower unit air outlet 121 and a surface facing the blower unit air outlet 121.
b) is provided.

On one side surface of the heat exchanger unit 110, a heat exchanger unit inlet 114 having a duct insertion portion 115 is provided, and the duct insertion portion 115 is connected to the suction chamber 40 as shown in FIG. It can be inserted into and removed from the mounting portion 42 of the inflow duct 41.

The blower unit blower port 121 has
A duct insertion portion 124 is provided so as to be able to be inserted into and removed from the attachment portion 52 of the ventilation duct 51 (51a, 51b) for guiding the air to be blown into the branch chamber 50.

As described above, the duct insertion part 115 of the heat exchanger unit 110 and the attachment part 42 of the inflow duct 41 and the duct insertion part 124 of the blower unit air outlet 121 and the attachment part 52 of the blower duct 51 can be inserted and removed. By providing such a structure, the convenience in assembling work and the like is improved.

In FIG. 2, the indoor unit 10a of the air conditioner provided under the floor includes a suction chamber 40a.
The inflow duct 41 is not provided because it is disposed in a closed space below the stairs or the like that acts as a. However, it should be added that this does not limit the generality of the present invention.

The blower unit 120 is fixed to a lower portion of the heat exchanger unit 110 with screws or the like and used integrally. At that time, heat exchanger unit inlet 1
The direction in which the air introduced from 14 is introduced and the direction in which the air is blown from the blower unit air outlet 121 may differ depending on the installation conditions.

Therefore, in such a case, one of the two blower unit inlets 122 (122a, 122b) is selected and aligned with the heat exchanger unit blower opening 117, and the blower unit 120 and the heat exchanger unit 11
0 and the blower unit 120
It is possible to change the direction of air flow from the air. Then, a cover 123 is provided on the remaining blower unit introduction port 122.

In FIG. 3A, the blower unit introduction port 122b is closed by a lid 123 to blow air in the right and left direction. In FIG. 3B, the blower unit The introduction port 122a is closed by the lid 123, and blows air downward.

The blower unit 120 is made of a heat insulating material and a sheet metal, and the lid 123 is made of a heat insulating material.

Therefore, it is possible to select the mounting direction of the blower unit 120 according to the difference between the air introduction direction and the air blowing direction, so that a design or the like corresponding to these conditions is not required. The versatility of the indoor unit 10 can be improved.

Further, since the heat exchanger unit 110 is arranged above the blower unit 120, water (water due to dew condensation or the like) from the indoor heat exchanger 6 collected in the drain pan 15 can be easily removed. It becomes possible to take it out.

That is, in the case of the conventional configuration, the drain pan is provided at a low position, so that the drain is drained out of the machine using a means such as a pump. However, the drain pan 116 according to the present invention is at a high position. Since it is provided, it is possible to easily take it out of the machine by using the head without using a pump or the like.

Next, the air conditioning operation will be described. At the time of cooling, the refrigerant is switched by switching the four-way switching valves 8a and 8b as shown in FIG.
Of the compressors 1a, 1a
b, a cycle is formed in which the outdoor heat exchangers 2a and 2b, the heat recovery units 4a and 4b, the pressure reducers 5a and 5b, and the indoor heat exchangers 6a and 6b are sequentially circulated.

At this time, the outdoor heat exchangers 2a and 2b and the heat recovery units 4a and 4b act as condensers, and the indoor heat exchanger 6
a and 6b function as evaporators.

That is, in the outdoor units 20a and 20b, the refrigerant is compressed by the compressors 1a and 1b to become a high-temperature and high-pressure gas refrigerant, which exchanges heat with the outside air in the outdoor heat exchangers 2a and 2b, and which is mostly liquefied. The refrigerant is sent to the ventilator 30 as a refrigerant in a liquid mixed state.

In this way, the refrigerant sent from the outdoor heat exchangers 2a and 2b to the ventilator 30 is supplied to the heat recovery units 4a and 4a.
In 4b, it is cooled by heat exchange with the room air to be ventilated and sent to the indoor units 10a and 10b.

The heat recovery units 4a and 4b are heat exchangers provided in the middle of the exhaust duct 70.
b is configured such that the room air to be ventilated is blown by the ventilation blower 31.

Therefore, the refrigerant from the outdoor units 20a and 20b exchanges heat with the cooled air exhausted for the ventilation, and the remaining gas refrigerant is liquefied. This increases the thermal efficiency of the cycle.

The refrigerant is sent to the decompressors 5a and 5b, the flow rate of the refrigerant is reduced by the decompressors 5a and 5b, the pressure is reduced and evaporated by the indoor heat exchangers 6a and 6b, and the air blown to each room is blown. Heat exchange with As a result, the air blown to each room becomes cool air, and is blown to each living room through the branch chambers 50a and 50b. Thereafter, the refrigerant is supplied to the outdoor unit 20a,
Returning to 20b, the cycle makes one cycle.

At the time of heating, the four-way switching valves 8a and 8b
And the refrigerant is circulated in the direction of the dotted arrow shown in FIG. 1, whereby the compressors 1a, 1b, the indoor heat exchanger 6a,
6b, a cycle of sequentially circulating the pressure reducers 5a and 5b, the heat recovery devices 4a and 4b, and the outdoor heat exchangers 2a and 2b is formed.

At this time, the outdoor heat exchangers 2a, 2b and the heat recovery units 4a, 4b act as evaporators, and the indoor heat exchanger 6
a and 6b function as condensers.

That is, in the outdoor units 20a, 20b, the refrigerant is compressed by the compressors 1a, 1b to become a high-temperature, high-pressure gas refrigerant, and the indoor heat exchangers 6a, 6b of the indoor units 10a, 10b.
b.

The indoor heat exchangers 6a and 6b exchange heat with the air blown to each room, so that the air blown into each room is heated by the heat of the high-temperature refrigerant and turned into hot air, and the branch chamber 50a , 50b, the air is blown from each of the blowing chambers 60a, 60b to each of the living rooms.

On the other hand, the high-temperature refrigerant loses heat due to heat exchange, condenses, is throttled by the decompressors 5a, 5b, and sent to the heat recovery units 4a, 4b of the ventilator 30.

In the heat recovery units 4a and 4b of the ventilator 30, the refrigerant exchanges heat with the room air exhausted for ventilation, whereby a part of the refrigerant evaporates and the outdoor unit 20
Return to a and 20b. The refrigerant is supplied to the outdoor heat exchanger 2a,
By exchanging heat with the outside air in 2b, the remaining refrigerant evaporates and returns to the compressors 1a and 1b to make one cycle.

[0054]

The heat efficiency of the cycle can be improved by recovering the heat of the conditioned air exhausted by the heat recovery device.

Further, since the mounting direction of the blower unit can be selected according to the difference between the air introduction direction and the blowing direction, a design or the like corresponding to these conditions becomes unnecessary, and the versatility of the indoor unit is eliminated. And cost can be reduced.

Further, since the heat exchanger unit is arranged above the blower unit, the water accumulated in the drain pan from the indoor heat exchanger can be easily taken out.

Further, since the duct insertion portion is provided in the heat exchanger unit and the blower unit, the convenience of assembling work and the like is improved.

[Brief description of the drawings]

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

FIG. 2 is a schematic configuration diagram of an air conditioning system using the air conditioner of FIG.

FIGS. 3A and 3B are diagrams illustrating a difference in a blowing direction of conditioned air depending on how a blower unit is mounted. FIG. 3A illustrates a case where room air is blown out in a horizontal direction, and FIG. 3B illustrates a case where room air is blown down. FIG.

FIG. 4 is a schematic diagram illustrating a connection state between a heat exchanger unit, a blower unit, and a duct insertion portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Outdoor heat exchanger 3 Outdoor blower 4 Heat recovery device 5 (5a, 5b) Decompressor 6 (6a, 6b) Indoor heat exchanger 7 (7a, 7b) Indoor blower 8 Four-way valve 10 (10a, 10b) ) Indoor unit 20 (20a, 20b) Outdoor unit 30 Heat recovery device 40 (40a, 40b) Suction chamber 41 Inflow duct 42 Attachment 50 (50a, 50b) Branch chamber 51 Ventilation duct 52 Attachment 60 (60a, 60b) Chamber 70 Exhaust port 80 (80a, 80b) Outside air inlet 110 Heat exchanger unit 113 Top plate 114 Heat exchanger unit inlet 115 Duct insertion part 116 Drain pan 117 Heat exchanger unit air inlet 120 Blower unit 121 Blower unit air outlet 122 (122a, 122b) Fan unit inlet 123 lid 24 duct insertion section

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shinji Kaneko 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Shintaro Sugimoto 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A compressor for compressing a refrigerant, an outdoor heat exchanger for exchanging heat between the refrigerant and the outside air, a decompressor, an indoor blower for blowing air to a harmonious room, and air blown by the indoor blower. An air conditioner equipped with a cooling cycle using an indoor heat exchanger that exchanges heat between air and refrigerant and a heat recovery unit that recovers the heat of indoor air exhausted for ventilation Circulates the refrigerant in the order of the compressor, the outdoor heat exchanger, the heat recovery unit, the decompressor, and the indoor heat exchanger. At the time of heating, the refrigerant is circulated through the compressor, the indoor heat exchanger, the decompressor, and the heat exchanger. A four-way switching valve that circulates in the order of a recovery unit and an outdoor heat exchanger, a heat exchange unit that houses the indoor heat exchanger, and an indoor fan that is housed and arranged below the exchanger unit, Air blown sideways or down An air conditioner comprising: the blower unit that blows air in the direction of. 2. The heat exchanger unit according to claim 1, wherein the heat exchanger unit has a heat exchanger unit air outlet for blowing conditioned air, and the fan unit is provided on two side surfaces perpendicular to each other. When the air inlet for introducing air from the air inlet and one of the inlets are aligned with the air inlet of the heat exchanger unit to connect the blower unit and the heat exchanger unit, the other inlet is The air conditioner according to claim 1, further comprising a cover that closes. 3. The heat exchanger unit has a heat exchanger unit inlet which is detachably connected to an inflow duct for guiding conditioned air to the heat exchanger unit, and wherein the blower unit is connected to the blower unit. The air conditioner according to claim 2, further comprising a blower unit blower port detachably connected to a blower duct for guiding the conditioned air blown from the blower.