JP2003161464A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner easily dealing with troubles or performing the periodical maintenance. <P>SOLUTION: This air conditioner 1 stores a cooling and heating unit 50 in a housing 10. When the cooling and heating unit 50 is inserted into the housing 10, an air-tight connecting part is formed between a vent opening 17 and the cooling and heating unit 50. The cooling and heating unit 50 includes an indoor-side heat exchange unit 70 and an outdoor-side heat exchange unit 120. A width of a nozzle 97 of a fan casing 90 of the indoor-side heat exchange unit 70 is widened by demounting a guide member 95, whereby a multiblade fan 80 in a fan chamber 96 can be used as an opening for maintenance. The indoor-side heat exchange unit 70 includes a heating means 73 for heating, and the heating means 73 is mounted and dismounted from either of the left and right side faces of the housing 10. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air conditioner.

[0002]

2. Description of the Related Art There are various types of air conditioners. It is often the case that the indoor units and outdoor units are separated from each other in the houses of general Japanese houses. On the other hand, an integrated air conditioner that houses an indoor heat exchange unit and an outdoor heat exchange unit in a single housing is a building where it is difficult to place an outdoor unit outside the building, such as a hotel or a densely built-up area. It is often used for buildings.

A small integrated air conditioner for heating and cooling a single room is often attached directly to a window or a hole formed in a wall. On the other hand, a rather large integrated air conditioner that takes charge of air conditioning for multiple rooms, does the deck protrude toward the room from the wall facing the outside?
A support base is placed near the wall in the room, and the air conditioner is often installed on this deck or the support base. US Pat. No. 6,065,296 describes an example in which a deck is projected from a ventilation opening provided on a wall and an air conditioner is placed on the deck.

[0004]

Whether a separate type or an integrated type is used, it is required to deal with a problem when it occurs. It is an object of the present invention to provide an air conditioner that can easily cope with malfunctions and can be regularly maintained.

[0005]

In order to solve the above problems, according to the present invention, in an air conditioner having a housing for housing a cooling / heating unit, a part of a fan fan casing of the cooling / heating unit is removed. At this time, an opening for maintaining the fan in the fan casing is formed.

According to the above construction, the fan can be maintained without touching the components arranged in front of the blower.

Further, according to the present invention, in the air conditioner in which the air conditioning unit is housed in the housing, the heating means for heating is arranged in the housing, and the heating means can be attached and detached from either the left or right side surface of the housing. Configured.

According to the above arrangement, the heating means can be attached and detached from either the left or right side surface of the housing, so that the heating means can be attached or detached from either the left or right side even when the air conditioner is installed in the corner of the room.

Further, according to the present invention, the heating means is fixed by engaging one end of the heating means with an engagement receiving portion in the housing and screwing the other end to any member in the housing. I decided. With this configuration, the heating means can be fixed with a small number of screws.

Further, in the present invention, the temperature sensing means for controlling the energization of the heating means is arranged above the heating means, and the temperature sensing part of the temperature sensing means is arranged to direct the heat flow from the heating means. It was decided to be contained in a container having a ventilation hole through which it passes. With this configuration, the temperature sensing operation is stable.

Further, according to the present invention, in the air conditioner in which the air conditioning unit is housed in the housing, when the air conditioning unit is inserted into the housing, an airtight connection is formed between the ventilation opening on the housing side and the air conditioning unit. I decided to do it.

According to the above construction, the leakage of air flow is reduced and the energy is effectively utilized.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

The air conditioner 1 is a rectangular parallelepiped housing 1
Has 0. How to configure the housing 10 will be described later. As shown in FIG. 2, the housing 10 houses the cooling / heating unit 50 including the indoor heat exchange unit 70 and the outdoor heat exchange unit 120. The housing 10 is pressed from the indoor side to a ventilation opening 3 provided in a wall 2 that separates the indoor and outdoor areas. In order to match the height of the ventilation opening of the housing 10 with the height of the ventilation port 3, the support 5 is placed on the floor 4, and the housing 10 is placed on the support 5.

From the upper part of the room, the air conditioning duct 6 vertically descends. A duct 33 protruding on the upper surface of the housing 10 is connected to the air conditioning duct 6. The air-conditioning duct 6 is connected to a horizontal air-conditioning duct (not shown) at the ceiling of the room and sends cold air or warm air to a plurality of rooms through this horizontal air-conditioning duct.

As described above, the housing 10 has a rectangular parallelepiped shape, but its six faces are composed of the following six panels shown in FIG. That is, the bottom panel 11 and the top panel 1
2, front panel 13, rear panel 14, left side panel 1
5 and the right side panel 16. All of these panels are made of sheet metal, fixed to each other with screws, and assembled into the housing 10.

Even after the housing 10 is assembled, the front panel 13, the rear panel 14, the left side panel 15, and the right side panel 16 which compose the four circumferences of the housing 10 face the wall 2 among the four panels. The three panels, the front panel 13, the left side panel 15, and the right side panel 16 except the rear panel 14, which can be detached, can be independently removed from the housing 10. These 3
The strength of each panel is designed so that the shape of the housing 10 can be maintained with a panel group that remains even if any one of the panels is removed, and that it can withstand various loads.

The rear panel 14 has a large rectangular ventilation opening 1
7 has a frame shape. The ventilation opening 17 has an area capable of exposing the blowout portion of the outdoor heat exchange unit 120 toward the outside of the room and securing a suction passage (described later) for sucking air from the outside.

A frame-shaped gasket 18 is mounted on the inner surface of the rear panel 14 so as to surround the ventilation opening 17. The gasket 18 forms an airtight connection with the cooling / heating unit 50 as described later. Further, a rectangular loop-shaped protruding portion 19 surrounding the ventilation opening 17 is formed on the rear surface of the rear panel 14 (see FIG. 2). The protrusion 19 enters the ventilation port 3 and prevents air from entering and exiting through the gap between the air conditioner 1 and the wall 2.

The front panel 13 is provided with a rectangular ventilation opening 20. The ventilation opening 20 allows the indoor air to pass through the housing 10.
It is for inhaling into. A filter 21 (see FIG. 1) is arranged on the front surface of the ventilation opening 20 to filter dust from the sucked air. The filter 21 is a rectangular frame with a filter material stretched and is held by a filter receiver 22 provided on the front panel 13.

The filter receiver 22 is made by welding sheet metal L-shaped angles to the left and right side edges of the ventilation opening 20 so as to face each other. A dead end is formed at the lower end of each angle, and the filter 21 inserted into the filter receiver 22 from above is held at a height corresponding to the ventilation opening 20.

The bottom panel 11 is in the shape of a tray and has a rectangular hole 23 in the front. The rear part of the bottom panel 11 is lower than the front part to form a drain pan 24. A water collecting basin 25 having a structure shown in FIG. 6 is provided in a part of the drain pan 24.

The water collecting basin 25 is a component molded separately from the bottom panel 11, and is fitted into the opening 26 provided in the bottom panel 11 from above. A lid 27 having a water passage 28 in the center covers the upper opening of the water collecting basin 25. A drain hose 30 is connected to the outflow port 29 of the water collecting basin 25. The drain hose 30 drains the drain to the indoor drain port or the outdoor.

Screw type adjusting legs 31 are provided at the four corners of the bottom surface of the bottom panel 11 (see FIG. 2). After the housing 10 is placed on the support base 5, the adjusting legs 31 are turned at four places to adjust the height and bring out the horizontal.

FIG. 7 shows the structure of the top panel 12. The top panel 12 has a circular opening 32 at a substantially central portion. Through this opening 32, a cylindrical duct 33 projects from the inside of the housing 10. The duct 33 is integrally molded with a rectangular duct base 34 with synthetic resin.

The duct base 34 has notches 35 at four corners, and mounting bolts 36 shown in FIG. 8 are attached to the notches 35. The mounting bolt 36 is arranged with its axis vertical, and has two flanges 37 and 38 at the lower end thereof with a space in the vertical direction, and the duct base 34 is sandwiched between the flanges 37 and 38. It is inserted into the notch 35 so as to be removed. The notch 35 has a constricted inlet so that the inserted mounting bolt 36 does not easily come out.

The top panel 12 has a total of 4 holes surrounding the through holes 32.
A nut 39 is fixed to the place, and a mounting bolt 36 is screwed into the nut 39 from below. At the upper end of the mounting bolt 36, a recess 40 for receiving a fastening tool such as a Phillips screwdriver or a hexagonal bar wrench is formed. When the tip of the fastening tool is put in the recess 40 and the mounting bolt 36 is rotated, the mounting bolt 36 moves up and down with respect to the nut 39, whereby the duct 33 and the duct base 34 change the height in the housing 10.

A heat insulating plate 41 is inserted between the upper panel 12 and the duct base 34. The heat insulating plate 41 is formed of a material having a good heat insulating property such as polystyrene foam. The heat insulating plate 41 is disposed here so that the upper surface panel 12 is not cooled even when the duct base 34 is cooled by cold air.
This is to prevent dew condensation on the surface of 2.

Next, the structure of the cooling / heating unit 50 will be described with reference to FIGS. The air conditioning unit 50 includes an indoor heat exchange unit 70 and an outdoor heat exchange unit 120. The center of the indoor heat exchange unit 70 and the outdoor heat exchange unit 120 is the refrigeration cycle unit 51 shown in FIG. 9.

The refrigeration cycle section 51 is the indoor heat exchanger 7
1, the outdoor heat exchanger 121, and the compressor 52.
The respective elements are connected by a metal tube 53. The refrigeration cycle unit 51 includes a four-way valve (not shown), and has an indoor heat exchanger 71 and an outdoor heat exchanger 121 during cooling and heating.
The roles of can be changed.

The indoor heat exchanger 71 has an indoor blower 72.
Are combined to form the indoor heat exchange unit 70. The outdoor heat exchanger 121 is combined with the outdoor blower 122 to form the outdoor heat exchange unit 120.
Indoor heat exchange unit 70 and outdoor heat exchange unit 1
20 is set and fixed on a tray-shaped base 150.

An air guide 54 having a side surface curved in an arc shape is fixed to the upper portion of the indoor blower 72. The air guide 54 is made of sheet metal and serves to guide the air taken in from the outside toward the suction side of the outdoor blower 122.

The front side of the air guide 54 has an indoor blower 7
An air duct 55 for 2 is provided. As shown in FIG. 11, the air duct 55 is formed by fixing four sheet metal members 56, 57, 58 and 59 to the air guide 54.
It has a rectangular horizontal cross section. The air guide duct 55 plays a role of guiding the wind blown from the indoor blower 72 to the duct 33.
According to the area difference between the outlet of the indoor blower 72 and the duct 33, the air guide duct 55 has a shape in which the lower side is narrow but the upper side is widened toward the end.

The electrical equipment box 6 is provided on the front surface of the air duct 55.
0 is attached (see FIGS. 2 and 3). A gasket 61 is attached to the lower surface of the duct base 34 (see FIGS. 2, 3, 7, and 15). The gasket 61 is arranged in a rectangular loop shape like the upper surface opening shape of the air duct 55.

A compressor 52 is arranged in the gap between the indoor heat exchange unit 70 and the outdoor heat exchange unit 120.
It is fixed to the base 150 (see FIG. 4). The left side plate 160 and the right side plate 161 cover the gap between the indoor side heat exchange unit 70 and the outdoor side heat exchange unit 120 and the side surface of the outdoor side heat exchange unit 120 (FIGS. 9 and 12).
reference). The upper front corners of the left side plate 160 and the right side plate 161 are rounded according to the curvature of the air guide 54.

FIG. 12 shows a situation in which the indoor heat exchange unit 70 and the outdoor heat exchange unit 120 are fixed on the base 150, and the air guide 54 and the left and right side plates 160, 161 are fixed to them. The state of FIG. 12 is a completely assembled state of the cooling / heating unit 50.

Next, the detailed structure of the indoor heat exchange unit 70 will be described with reference to FIGS.

The main components of the indoor heat exchange unit 70 are an indoor heat exchanger 71, an indoor blower 72, and a heating means 73. The front shape of each of these has a rectangular shape, and the indoor heat exchanger 71,
The heating means 73 and the indoor blower 72 are arranged in this order.

As shown in FIG. 14, the indoor blower 72 includes a sirocco fan 80, a motor 81 for rotating the sirocco fan 80, and a fan casing 90. The motor 81 is fixed to the fan casing 90 via a metal mounting frame 82, and a motor shaft 83 is projected into a fan chamber (described later) of the fan casing 90. The sirocco fan 80 is fixed to the motor shaft 83 with a screw (not shown). This screw is provided on the boss portion at the center of the sirocco fan 80 so as to be orthogonal to the motor shaft 83.

The fan casing 90 is constructed by combining the following parts. That is, the casing body 9
1, a fan chamber rear face plate 92, a fan chamber left guide plate 93, a fan chamber right guide plate 94, and a guide member 95.

The casing body 91 is made of a synthetic resin molding, and a fan chamber 96 for accommodating the sirocco fan 80 is formed. The fan chamber 96 opens toward the front and the top. The fan chamber rear surface plate 9 is provided on the inner surface of the fan chamber 96.
2, the fan chamber left guide plate 93, and the fan chamber right guide plate 94 are fixed. The fan chamber rear face plate 92, the fan chamber left guide plate 93, and the fan chamber right guide plate 94 are made of metal. The guide member 95, the fan chamber left guide plate 93, and the fan chamber right guide plate 94 are combined to form a sirocco fan 80.
A guide wall with an involute curve that surrounds the outer circumference of is constructed.

As described above, the upper surface of the fan chamber 96 is open,
It is an outlet 97. The inlet of the air guide duct 55 is connected to this outlet 97 (see FIG. 15). The fan chamber right guide plate 94 constitutes one side of the air outlet 97, and the guide member 95 constitutes the other side of the air outlet 97.

The guide member 95 is independently the casing body 9
Can be removed from 1. When the guide member 95 is attached, the width of the blowout port 97 is 8
Since the diameter is smaller than the diameter D of 0 (see FIG. 14), the sirocco fan 80 cannot be extracted from the air outlet 97. After removing the guide member 95, the width of the blowout port 97 becomes W larger than D, and the sirocco fan 80 can be taken out from the blowout port 97.

The heating means 73 arranged between the indoor heat exchanger 71 and the indoor blower 72 is constructed as follows.
In FIG. 17, 100 is a metal orifice plate. The orifice plate 100 has a rectangular front shape, and a circular ventilation opening 101 is provided at a position corresponding to the front surface of the sirocco fan 80 (see FIG. 18). The diameter of the ventilation opening 101 is the same as or slightly smaller than the diameter of the suction portion of the sirocco fan 80.

On the front surface of the orifice plate 100, a pair of left and right heater mounting plates 102 and 103 are mounted. The heater mounting plates 102 and 103 are made of metal L-shaped angles and are fixed vertically to the left and right side edges of the orifice plate 100. Heater mounting plates 102, 103
Three heaters 104, 105 and 106 are horizontally stretched between them. Each of the heaters 104, 105, 106 is composed of two nichrome wire coils and is arranged vertically at a predetermined interval. Nichrome wire coil is used in some places Porcelain insulator 1
It is supported by 07 and prevents contact between the nichrome wire coils, and also prevents contact with the orifice plate 100.

The upper end of the heater mounting plate 103 is bent horizontally to form a temperature sensing means mounting portion 108. The temperature sensing means 110 attached to the temperature sensing means mounting portion 108 is used to detect the heat generated by the heaters 104, 105, 106 and control the energization of the heaters 104, 105, 106.

In the case of this embodiment, the temperature sensing means 110 comprises two thermostats 111 and 112 (see FIG. 19). On the other hand, the thermostat 111 detects the rise and fall of the temperature and turns on / off the power supply to the heaters 104, 105 and 106. The other thermostat 112 stops the operation of the air conditioner 1 when an abnormal temperature is detected.

The thermostats 111 and 112 are located at positions where the temperature sensing parts are exposed to the heat radiation and the heat flow from the heaters 104, 105 and 106. Thermostat 1
As for 11, a sheet metal container 113 is fixed to the lower surface of the temperature sensing means mounting portion 108 so as to wrap the temperature sensing portion of the thermostat 111.

The container 113 is open toward the orifice plate 100, and a vent hole 118 is formed in the orifice plate 100 at this portion (FIG. 1).
8, see FIG. 20). The location where the vent 118 exists corresponds to the discharge side of the sirocco fan 80. Therefore, when the sirocco fan 80 rotates, the pressure on the back side of the ventilation port 118 rises, and the ventilation port 1 moves from the fan chamber 96 into the container 113.
Air flows in through 18. The air that has flowed into the container 113 escapes to the front side of the orifice plate 100 from a vent 114 (see FIG. 20) provided on the bottom surface of the container 113.

The heating means 73 is attached in the following manner. As shown in FIG. 16, the projections 15 are formed on the base 150 at a small distance from the front surface of the indoor blower 72.
1 is formed. The projection 151 extends in the depth direction of the drawing, and is engaged with the indoor blower 72 in the engagement receiving portion 152.
To form. The lower end of the orifice plate 100 is inserted into the engagement receiving portion 152. And orifice plate 1
The upper end of 00 is screwed to the fan casing 90 with a screw (not shown). Since only one end of the orifice plate 100 is screwed in this way, only a small number of screws are required to fix the heating means 73.

The orifice plate 100 is in close contact with the front surface of the fan casing 90 and also functions as a front plate of the fan chamber 96. The partner to which the orifice plate 100 is screwed is not limited to the fan casing 90. It suffices that any member in the housing 10 can play a supporting role.

After fixing the heating means 73 as described above,
The gap between the indoor heat exchanger 71 and the indoor blower 72 is closed with three metal plates shown in FIG. That is, the top plate 115,
The left side plate 116 and the right side plate 117. This allows
The air passage extending from the indoor heat exchanger 71 to the indoor blower 72 has a surrounding shape, and the entire amount of the air heated by the heating means 73 does not leak to the outside.
Sucked in 2.

Next, the detailed structure of the outdoor heat exchange unit 120 will be described with reference to FIGS.

The main components of the outdoor heat exchange unit 120 are an outdoor heat exchanger 121 and an outdoor blower 122. These also have a rectangular front shape, and the outdoor blower 122 and the outdoor heat exchanger 121 are arranged in this order from the front to the back.

As shown in FIG. 23, the outdoor blower 122
Includes a propeller fan 130, a motor 131 for rotating the propeller fan 130, and a fan casing 140. The motor 131 is fixed to the fan casing 140 via a metal mounting frame 132, and the motor shaft 133 is projected to the back side of the fan casing 140. The propeller fan 130 is fixed to the motor shaft 133 with a nut.

The fan casing 140 has a circular ventilation opening 141 which is slightly larger than the diameter of the propeller fan 130, and the propeller fan 130 is arranged in this. A ring 134 is integrally formed with the propeller fan 130. The ring 134 is located on the back side of the ventilation port 141 and has a larger diameter than the ventilation port 141. The role of the ring 134 will be described later.

A top plate 142 projects from the upper end of the fan casing 140 toward the back side. The top plate 142 covers the outdoor heat exchanger 121. By screwing the top plate 142 to the outdoor heat exchanger 121 with a screw (not shown), the upper ends of the outdoor blower 122 and the outdoor heat exchanger 121 are connected to each other, and the gap between them is closed.

As shown in FIG. 2, there is a gap between the outdoor heat exchange unit 120 and the air guide 54. This gap serves as a suction passage 62 for sucking air from the outside.

The role of the ring 134 will be described. Base 1
24 has a tray shape as shown in FIG. 24. The front part is a drain pan 153 for receiving the drain from the indoor heat exchanger 71, and the rear part is a drain pan 154 for receiving the drain from the outdoor heat exchanger 121. ing. The drain pan 153 is formed by fitting a polystyrene tray into the base 150. The bottom surface of the drain pan 153 is higher than the bottom surface of the drain pan 154, and all the drain received by the drain pan 153 is drain pan 15.
Pour into 4.

The drain pan 154 is formed with a raised portion 155 having a height lower than that of the bottom surface of the drain pan 153, and an overflow opening 156 is provided on the top surface thereof. That is, the drain forms a puddle having a depth equal to the height of the raised portion 155 in the drain pan 154, and then falls into the drain pan 24 of the bottom panel 11 through the overflow opening 156 and is drained from the water collecting basin 25 through the drain hose 30. It

The lower end of the ring 134 is immersed in the puddle of the drain pan 154. When the propeller fan 130 rotates, the ring 134 disperses water droplets in the centrifugal direction, and the droplets are carried by the airflow blown from the propeller fan 130 to the outdoor heat exchanger 121 and applied to the outdoor heat exchanger 121. When performing the cooling operation, the outdoor heat exchanger 121
The water that has been splashed evaporates and takes heat of vaporization from the outdoor heat exchanger 121.

A ridge-shaped drain cover 157 is provided in the drain pan 152. The drain cover 157 receives the bottom surface of the indoor heat exchanger 71 and prevents the indoor heat exchanger 71 from coming into contact with the drain pan 153.

Inside the drain pan 154, the anti-freezing valve 15
8 are provided. The anti-freezing valve 158 is normally closed, but it opens when the room temperature reaches 5 ° C., so that all the water in the drain pan 154 is dropped to the bottom panel 11 and drained to the outside. And make sure that the drain pan 154 is not covered with ice.

Next, the procedure for installing the air conditioner 1 will be described.

The air conditioner 1 may be shipped with the housing 10 and the cooling and heating unit 50 combined.
It may be shipped separately packaged on the assumption that it will be combined locally. When separately packed, the housing 10 may be packed in an assembled state or may be packed in a disassembled state.
When the cooling / heating unit 50 is separately packaged, it is packaged in an assembled state as shown in FIG.

When the housing 10 is shipped in the disassembled state, the bottom panel 11, the top panel 12, the front panel 1
3, the rear panel 14, the left side panel 15, and the right side panel 16 are shipped together with the filter 21, the duct 33, the duct base 34, and the heat insulating plate 41.

When the housing 10 is shipped in an assembled state, the unpacked housing 10 may be placed on the support base 5 on site. When shipped in a disassembled state, the bottom panel 11, the top panel 12, the front panel 13, the back panel 14, the left side panel 15, and the right side panel 16 are locally manufactured.
Are screwed to each other in a predetermined procedure to form the housing 10, and then mounted on the support 5.

When mounting the housing 10 on the support base 5, one of the three panels of the front panel 13, the left side panel 15, and the right side panel 16 is removed. Which panel is selected depends on the local situation. That is, the panel in the direction in which the cooling / heating unit 50 can be easily inserted later is removed.

The housing 10 mounted on the support 5 is
Positioning is performed so that the protruding portion 19 on the back surface enters the ventilation port 3, and leveling is performed by adjusting the height with the adjusting legs 31. Inside the housing 10, the duct base 34 is pulled up to the top by the rotation of the mounting screw 36. The air conditioning duct 6 is connected to the duct 33, and the drain hose 30 is connected to the water collecting basin 25.

After the connection between the air conditioning duct 6 and the drain hose 30 is completed, the cooling / heating unit 50 is inserted into the housing 10. After inserting the cooling / heating unit 50, the rear panel 14
To the rear edge of the air conditioning unit 50 (top 1
42, the left side plate 160, the right side plate 161, and the base 150.
Edge of the back side of the) is pressed against the gasket 18. As a result, an airtight connection is formed between the ventilation opening 17 and the cooling / heating unit 50. The airtight connection at this location reduces the leakage of air flow and leads to effective use of energy.

After the cooling / heating unit 50 is airtightly connected to the ventilation opening 17, the cooling / heating unit 50 is fixed to the housing 10 with screws (not shown).

Then, the mounting screw 36 is turned to turn the duct 33.
Also, the duct base 34 is lowered to bring the gasket 61 into close contact with the upper edge of the air duct 55. As a result, the air guide duct 55 and the duct 33 are hermetically connected.

After that, the panel which has been removed is screwed to complete the housing 10. Then, the filter 21 is fitted into the filter receiver 22.

Next, the operation of the air conditioner 1 will be described.

When the operation of the air conditioner 1 is started, the indoor blower 72 and the outdoor blower 122 start blowing air. The indoor blower 72 uses the filter 21 to move the housing 10
Intake room air into the room. The indoor air that has been sucked in passes through the indoor heat exchanger 71 and the heating means 73, is then sucked into the indoor blower 72, and is blown out from the air outlet 97. The air blown from the air duct 55 to the duct 33.
And is sent to the air conditioning duct 6 from there.

The outdoor blower 122 sucks outdoor air into the housing 10 through the suction passage 62. The sucked outdoor air is blown out from the outdoor blower 122 toward the outdoor heat exchanger 121, passes through the outdoor heat exchanger 121, and goes out of the room.

During the cooling operation, the high temperature refrigerant compressed by the compressor 52 is sent to the outdoor heat exchanger 121. In the outdoor heat exchanger 121, the outdoor blower 122
The outdoor air blown by the heat deprives the heat of the refrigerant. The refrigerant is cooled and liquefied.

The liquefied refrigerant passes through an expansion valve (not shown) and then vaporizes inside the indoor heat exchanger 71 to cool the indoor heat exchanger 71. The indoor air drawn into the housing 10 by the indoor blower 72 is deprived of heat when passing through the indoor heat exchanger 71 and becomes cold air. Cool air is sent to a predetermined room through the air conditioning duct 6 to cool the room.

During the heating operation, the refrigerant is circulated in the opposite direction. The condensed refrigerant is sent to the indoor heat exchanger 71, and the indoor air passing through the indoor heat exchanger 71 is warmed to be warmed up.
The refrigerant has passed through an expansion valve (not shown), and the rear outdoor heat exchanger 1
It vaporizes inside 21 and cools the outdoor heat exchanger 121. The outdoor blower 122 transfers outdoor air to the outdoor heat exchanger 1
When air is blown to 21, heat exchange is performed between the vaporized refrigerant and the outdoor air, and the refrigerant takes heat of the outdoor air. After raising the temperature in this way, the refrigerant returns to the compressor 52.

During the heating operation, the heating means 73 is also energized, and heat is obtained from the indoor heat exchanger 71 to further raise the temperature of the air whose temperature has risen to some extent.

Depending on the required heating temperature, the heater 10
Necessary ones among 4, 105 and 106 are energized. When the temperature is low or when it is necessary to rapidly raise the temperature of the room immediately after the start of heating operation, the heater 104,
Energize all of 105 and 106.

Irrespective of the number of heaters used, when the heaters are energized, radiant heat and hot air flow strike the temperature sensing means 110. The thermostat 111 detects the rise and fall of the temperature and turns ON / OFF the energization of the heaters 104, 105 and 106. The other thermostat 11
When the abnormal temperature is detected, 2 stops the operation of the air conditioner 1.

Thermostat 1 for detecting abnormal temperature
The 12 temperature sensitive parts are directly exposed to radiant heat and hot air flow. On the other hand, the thermostat 111, which detects the rise and fall of the temperature, moves from the fan chamber 96 to the ventilation port 1 during normal operation.
It is only exposed to the incoming hot air flow through 18.

The thermostat 111 is inherently susceptible to the radiant heat of the uppermost heater 104. However, here, the radiant heat is cut off by the container 113, and the vent 118
Only the airflow coming in from is targeted for temperature detection. This airflow is an airflow in which the air that has passed through the heaters 104, 105 and 106 is collected in the fan chamber 96 through the ventilation opening 101 of the orifice plate 100 and agitated by the sirocco fan 80, and almost all the heat received from the heaters is collected. It is homogenized. Therefore, the heater 10
Even if all 4, 105, 106 are used,
Even if you turn off the power to one of the heaters,
The thermostat 111 can perform stable temperature detection with little error.

When the indoor blower 72 fails and the rotation of the sirocco fan 80 is stopped (fan lock), the inflow of airflow from the vent 118 to the container 113 is stopped. Then, the heat radiation and the hot air flow from the heater enter through the vent 114, and heat the temperature sensitive portion of the thermostat 111. As a result, the thermostat 111 detects the occurrence of an abnormality and turns off the heater.

During the cooling operation, the drain drips from the indoor heat exchanger 71. Outdoor heat exchanger 12 during heating operation
Drain drips from 1. The drain is drain pan 153
Alternatively, it is received by the drain pan 154 and forms a puddle in the drain pan 154. As described above, this puddle is useful for cooling the outdoor heat exchanger 121 during the cooling operation.

When a failure such as a failure occurs in the heating / cooling unit 50, the cooling / heating unit 5 among the three panels of the front panel 13, the left side panel 15 and the right side panel 16 is selected.
The panel that is most convenient for 0 removal can be removed and the heating / cooling unit 50 can be removed for inspection.

If the failure of the heating means 73 can be identified, the left side plate 116 or the right side plate 117 is removed, the screw fixing the upper end of the orifice plate 100 is removed, and the lower end of the orifice plate 100 is engaged and received. Part 152
The heating means 73 can be removed from either of the left and right side surfaces of the housing 10 by removing the heating means 73. As a result, even if the air conditioner 1 is installed in the corner of the room, the heating means can be easily inspected and repaired.
Installation is done in reverse order.

When a problem occurs in the sirocco fan 80 of the indoor blower 72, if the guide member 95 is removed from the casing body 91, the air outlet 97 becomes an opening having a width W larger than the diameter of the sirocco fan 80. Sirocco fan 80
Can be removed from the motor shaft 83 and taken out from this opening, and necessary maintenance work can be performed. Therefore, it is not necessary to touch the components arranged in front of the indoor blower 72, that is, the indoor heat exchanger 71 and the heating means 73.

Although one embodiment of the present invention has been described above, the present invention can be implemented with various modifications within a range not departing from the gist of the invention.

[0091]

The present invention has the following effects.

According to the present invention, in an air conditioner in which a cooling / heating unit is housed in a housing, when a part of a blower fan casing of the cooling / heating unit is removed, the fan in the fan casing is maintained. Since the opening is formed, the fan can be maintained without touching the components arranged in front of the blower, and the maintenance of the fan does not take much time.

Further, according to the present invention, in the air conditioner in which the air conditioning unit is housed in the housing, the heating means for heating is arranged in the housing, and the heating means can be attached and detached from either the left or right side surface of the housing. Since it is configured, the heating means can be attached and detached from either the left or right side surface of the housing. Even when the air conditioner is installed in the corner of the room, the heating means can be attached and detached from either the left or right side, and there is no need to inspect and repair the heating means.

Further, in the present invention, the heating means is fixed by engaging one end of the heating means with an engagement receiving portion in the housing and screwing the other end to any member in the housing with a screw. Therefore, the heating means can be fixed with a small number of screws, and the component cost and the assembly cost can be reduced.

Further, in the present invention, the temperature sensing means for controlling the energization to the heating means is arranged above the heating means, and the temperature sensing part of the temperature sensing means is arranged to direct the heat flow from the heating means. Since it is contained in a container having a ventilation hole through which it passes, the temperature unevenness of the hot air flow is small and the temperature-sensitive operation is stable.

Further, according to the present invention, in the air conditioner in which the air conditioning unit is housed in the housing, when the air conditioning unit is inserted into the housing, an airtight connection is formed between the ventilation opening on the housing side and the air conditioning unit. As a result, the leakage of blast is reduced and the energy is effectively used.

[0097]

[Brief description of drawings]

FIG. 1 is a perspective view of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the air conditioner.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is a horizontal sectional view of the air conditioner.

FIG. 5 is an exploded perspective view of a housing

FIG. 6 is a partially enlarged vertical sectional view of a housing.

FIG. 7 is an exploded perspective view of a top panel.

FIG. 8 is a partially enlarged vertical sectional view of a top panel.

FIG. 9 is an exploded perspective view of an air conditioning unit

FIG. 10 is a perspective view of a refrigeration cycle unit.

FIG. 11 is a perspective view of a wind guide and a wind duct.

FIG. 12 is a perspective view of the cooling / heating unit in an assembled state.

FIG. 13 is an exploded perspective view of an indoor heat exchange unit.

FIG. 14 is an exploded perspective view of the indoor blower.

FIG. 15 is a vertical cross-sectional view of the air conditioner showing the connection between the indoor blower and the air duct.

FIG. 16 is a side view of the indoor heat exchange unit.

FIG. 17 is a perspective view of heating means.

FIG. 18 is an exploded perspective view of the heating means.

FIG. 19 is a perspective view of a temperature-sensing means portion.

FIG. 20 is a partially enlarged sectional view of a temperature-sensing means portion.

FIG. 21 is a perspective view showing a state where the outdoor heat exchange unit is combined with the base.

FIG. 22 is a perspective view of the outdoor heat exchange unit.

FIG. 23 is an exploded perspective view of the outdoor fan.

FIG. 24 is a perspective view of a base

[Explanation of symbols]

1 air conditioner 2 walls 3 ventilation openings 4 floors 5 support 6 air conditioning duct 10 housing 11 Bottom panel 12 Top panel 13 front panel 14 Rear panel 15 Left side panel 16 Right side panel 18 gasket 24 drain pan 30 drain hose 33 ducts 34 duct base 50 air conditioning units 70 Indoor heat exchange unit 71 Indoor heat exchanger 72 Indoor blower 73 Heating means 90 fan casing 95 Guide member 97 Air outlet 110 Temperature Sensing Means 111,112 thermostat 113 containers 114 Vent 120 outdoor heat exchange unit 121 Outdoor heat exchanger 122 Outdoor blower 150 base 152 Engagement receiving part

[Procedure amendment]

[Submission date] March 22, 2002 (2002.3.2)
2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3L050 BA01 BA10                 3L051 BE02 BE03 BE04 BG04 BH02                       BJ06

Claims (5)

[Claims] 1. An air conditioner having a housing for housing a cooling / heating unit, wherein when a part of a fan fan casing of the cooling / heating unit is removed, an opening for maintaining a fan in the fan casing is provided. The air conditioner according to claim 1, wherein the air conditioner is formed. 2. An air conditioner in which a heating / cooling unit is housed in a housing, wherein heating means for heating is arranged in the housing, and the heating means can be attached and detached from either of the left and right side surfaces of the housing. The air conditioner according to claim 1. 3. The heating means is fixed by engaging one end of the heating means with an engagement receiving portion in the housing and screwing the other end to any member in the housing. The air conditioner according to claim 2. 4. A temperature sensing means for controlling energization to the heating means is arranged above the heating means, and a temperature sensing part of the temperature sensing means has a vent hole through which a hot air flow from the heating means is passed. The air conditioner according to claim 2 or 3, wherein the air conditioner is placed in a container having. 5. An air conditioner for housing a cooling / heating unit in a housing, wherein when the cooling / heating unit is inserted into the housing, an airtight connection is formed between the ventilation opening on the housing side and the cooling / heating unit. A characteristic air conditioner.