JP2000171055A - Indoor unit and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a ventilator having excellent operability such as maintenance service or the like by effectively utilizing a limited space of an indoor unit. SOLUTION: In the indoor unit comprising a fan for sucking indoor air from a suction port and diffusing it from an air outlet, an indoor heat exchanger for heat exchanging the indoor air with a refrigerant supplied from an outdoor unit, a ventilating fan 18, a ventilator having a ventilating hose 19 coupled to the fan 18 to suck the indoor air and to exhaust it out of the room, and an indoor unit controller 15 having various type electric circuit elements; the fan 18 is fixed to the controller 15, and the controller 15 is integrated with the fan 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit and an air conditioner for providing a comfortable indoor environment by heating or cooling, and more particularly to an indoor unit and an air conditioner capable of ventilating indoor air. It relates to a technique suitable for use in a machine.

[0002]

2. Description of the Related Art An air conditioner is composed of two major components, an indoor unit and an outdoor unit. Each of these units is provided with an indoor heat exchanger and an outdoor heat exchanger that exchange heat between the refrigerant and the indoor air and between the refrigerant and the outdoor air.

[0003] These indoor heat exchangers and outdoor heat exchangers are:
In addition, components such as a compressor and an expansion valve are added to constitute a refrigerant circuit. Refrigerant physically circulates through this circuit, and follows the circulating process of changing the state of high-temperature and high-pressure gas, low-temperature and low-pressure gas, high-temperature and high-pressure liquid, and low-temperature and low-pressure liquid. . The cooling and heating of the room is directly realized by heat exchange between the refrigerant in the indoor heat exchanger and room air.

By the way, during the heating operation, the gas refrigerant, which has been converted into a high-temperature and high-pressure gas by the compressor, is sent to the indoor heat exchanger.
By performing heat exchange between the refrigerant and room air, the refrigerant is condensed and a high-temperature and high-pressure liquid refrigerant is realized. During the cooling operation, the high-temperature and high-pressure gas refrigerant is sent to the outdoor heat exchanger to exchange heat with the outdoor air to form a high-temperature and high-pressure liquid refrigerant, which is further depressurized by passing through an expansion valve. The refrigerant is sent to the indoor heat exchanger as a liquid refrigerant, and heat is exchanged between the refrigerant and room air to evaporate, thereby realizing low-temperature low-pressure gasification.

Some of such air conditioners are provided with a ventilator for discharging indoor air to the outside for the purpose of ventilation of the room to be air-conditioned. As shown in FIG. 14, the ventilation device includes a ventilation fan 18 dedicated to ventilation and a ventilation hose 9 installed in the indoor unit 10. In FIG. 14, reference numeral 1 denotes a wall for separating indoor / outdoor, 2 denotes a sleeve, P denotes a refrigerant pipe, wiring, and a drain hose extending from the indoor unit 10 to the outdoor, and 3 denotes an outlet. It is a cover. Then, when the ventilation operation is performed by the above-described ventilation device, the ventilation fan 18 is operated, and the air in the room is sucked from the suction port dedicated to ventilation provided in the indoor unit 10, and discharged to the outside through the ventilation hose 9. You. The amount of air that can be ventilated by the ventilator is considerably smaller than the amount of conditioned air blown out from the indoor unit.

[0006]

By the way, in the indoor unit and the air conditioner provided with the ventilation device as described above, since the ventilation hose is particularly present, the layout of the ventilation hose when installing the indoor unit is required. It is desired to increase the degree of freedom and to improve the workability of installation. Hereinafter, the subject of the present invention will be specifically described.

First, the first problem of the present invention will be described.
In the case of an air conditioner equipped with the above-described ventilation device, a dedicated ventilation fan 18 and a ventilation hose 9 connected to the ventilation fan 18 are newly required. These make effective use of the limited space inside the indoor unit 10 in which a heat exchanger, a cross flow fan, etc. are at the center, and
It is desired to install with as few parts as possible.
In addition, since the ventilation fan 18 is a part to be subjected to maintenance services such as maintenance and inspection, it is necessary to give sufficient consideration to its workability when installing.

Further, depending on the type of the ventilation fan 18 to be used, an adapter is used to connect the ventilation fan 18 and the ventilation hose 9 due to the difference in the shape of the connecting portion as in the conventional example shown in FIG. AD3 may be required. In the illustrated example, the bracket 8 is used to fix the adapter AD3, and the number of components must be increased. Moreover, when removing the ventilation fan 18,
Since the separation from the adapter AD3 is always required, there is a problem that the amount of work increases. Therefore, even in such a case, there is a demand for a ventilation device installation structure that does not unnecessarily increase the number of parts and is excellent in workability of assembly and maintenance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to effectively utilize limited space of an indoor unit and have excellent workability such as a maintenance service. Installation of ventilation equipment.

Next, a second object of the present invention will be described. As described above, in the indoor unit and the air conditioner provided with the ventilation device, it is desired to be able to cope with various installation conditions depending on a combination of an installation place of the indoor unit 10, a position of the sleeve 2, and the like. The outlet cover 3 provided at the outlet of the hose also preferably has a structure that can be selected on site according to various installation forms.

The present invention has been made in view of the above circumstances, and a second object of the present invention is to provide a case in which an outlet cover of an air conditioner provided with a ventilator has a difference in an installation position or the like of an indoor unit. However, it is an object of the present invention to reduce the number of parts and improve workability by making it possible to cope with common parts.

[0012]

The present invention employs the following means in order to solve the above-mentioned problems. The indoor unit according to claim 1, wherein the indoor heat exchanger performs heat exchange between the indoor air and a refrigerant supplied from an outdoor unit, with a fan for sucking indoor air from an intake port and blowing out from an outlet. A ventilating device including a ventilation fan and a ventilation hose connected to the ventilation fan, for sucking room air and exhausting the room to the outside, and an indoor unit control unit including various electric circuit elements. The ventilation fan is fixed to the unit, and the indoor unit control unit and the ventilation fan are integrated.

According to such an indoor unit, since the indoor unit control unit and the ventilation fan, both of which are parts of the maintenance service, are integrated, it is possible to simultaneously attach and detach the indoor unit and perform maintenance and the like. Workability is improved.

An air conditioner according to a second aspect of the present invention includes an outdoor heat exchanger, a compressor for sending a high-temperature and high-pressure gaseous refrigerant to the heat exchanger, and an outdoor unit controller including various electric circuit elements. An outdoor unit, a fan for sucking indoor air from an inlet and blowing it out from an outlet, an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from the outdoor unit, and a ventilation fan. And a ventilation hose that is provided with a ventilation hose connected to the ventilation fan and that sucks room air and exhausts the air outside the room, and an indoor unit control unit that includes various electric circuit elements and that intermittently operates the ventilation device.
Fixing the ventilation fan to the indoor unit control unit,
An indoor unit in which the indoor unit control section and the ventilation fan are integrated is provided.

According to such an air conditioner, since the indoor unit control unit and the ventilation fan, which are maintenance service parts in the indoor unit, are integrated, the air conditioner with improved workability such as maintenance in the indoor unit is improved. Becomes

According to a third aspect of the present invention, there is provided an indoor unit for exchanging heat between the indoor air and a refrigerant supplied from an outdoor unit, and a fan for sucking indoor air from an air inlet and blowing air from an air outlet. A heat exchanger, a ventilation device that includes a ventilation fan and a ventilation hose connected to the ventilation fan via an adapter, and sucks room air and exhausts the air outside the room;
An indoor unit control section comprising various electric circuit elements is provided, and the ventilation fan and the adapter are respectively fixed to a common support member. Note that, as the above-described common support member, an indoor unit control unit and a base of the indoor unit are preferable.

According to such an indoor unit, the ventilation device can be installed with an increase in the number of parts being minimized. In particular, when the indoor unit controller and the base are used as support members, not only are new brackets unnecessary, but also design constraints such as securing space are reduced.

An air conditioner according to a fourth aspect of the present invention includes an outdoor heat exchanger, a compressor for delivering a high-temperature and high-pressure gas refrigerant to the heat exchanger, and an outdoor unit control unit including various electric circuit elements. An outdoor unit, a fan for sucking indoor air from an inlet and blowing it out from an outlet, an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from the outdoor unit, and a ventilation fan. And a ventilation hose that is provided with a ventilation hose connected to the ventilation fan and that sucks room air and exhausts the air outside the room, and an indoor unit control unit that includes various electric circuit elements and that intermittently operates the ventilation device.
An indoor unit in which the ventilation fan and the adapter are respectively fixed to a common support member. Note that, as the above-described common support member, an indoor unit control unit and a base of the indoor unit are preferable.

According to such an air conditioner, a ventilation device can be installed in the indoor unit while minimizing the increase in the number of parts. In particular, when the indoor unit controller and the base are used as support members, not only are new brackets unnecessary, but also design constraints such as securing space are reduced. Therefore, the degree of freedom in designing the indoor unit can be increased.

An air conditioner according to a fifth aspect of the present invention includes an outdoor heat exchanger, a compressor for delivering a high-temperature and high-pressure gas refrigerant to the heat exchanger, and an outdoor unit control unit including various electric circuit elements. An indoor unit, a fan for sucking indoor air from the suction port and blowing it out from the outlet, an indoor heat exchanger for exchanging heat between the indoor air and the refrigerant supplied from the outdoor unit, and an indoor air A ventilating device comprising: a ventilation fan that suctions air; and a ventilation hose that is connected to the ventilation fan and guides and exhausts the drawn indoor air to the outside of the room.
An indoor unit including an indoor unit control unit including various electric circuit elements, and an outdoor outlet in which the ventilation hose opens, attached to cover the outlet, and a cover body including a vent, An outlet cover comprising: a waterproof hood that covers the air vent and forms an opening downward.

According to such an air conditioner, it is possible to prevent outdoor wind, rainwater, and the like from entering the ventilation hose.

According to a sixth aspect of the present invention, there is provided the air conditioner, wherein the vent has a plurality of openings formed in a lattice shape, and a string-like member is used to pass through the openings and wind the refrigerant pipe. The outlet cover is fixed to the refrigerant pipe.

According to such an air conditioner, the outlet cover can be mounted and fixed without making a hole in the wall. In addition, the ventilation hole having a plurality of openings in a lattice shape can prevent the invasion of insects in addition to the intrusion of wind and rainwater.

According to a seventh aspect of the present invention, in the air conditioner, the cord member is a band having a plurality of locking projections near both ends, and the locking projections are locked to a peripheral wall of the opening. It is characterized by being fixed.

According to such an air conditioner, the fixing force of the outlet cover can be easily increased by pulling out both ends of the band, so that the workability of mounting the outlet cover can be improved.

An air conditioner according to an eighth aspect of the present invention is characterized in that the waterproof hood is variably attached to the cover main body in an opening direction of the opening.

According to such an air conditioner, the opening direction of the waterproof hood can always be directed downward regardless of the mounting direction of the outlet cover to the wall surface.

[0028] In the air conditioner according to the ninth aspect, the waterproof hood may be configured such that a concave portion and a convex portion provided at a 90-degree pitch on a joint surface of the cover main body and the waterproof hood are fitted to each other to form the opening. The direction is selectable from four directions, up, down, left and right.

According to such an air conditioner, the waterproof hood is rotated so that the opening direction of the waterproof hood is directed downward according to the mounting direction of the outlet cover to the wall surface, and the respective concave portions of the joint surface are By fitting the protrusions, the waterproof hood can be fixed to the cover body after the positioning is performed reliably.

[0030]

Embodiments of an indoor unit and an air conditioner according to the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing the overall configuration of the air conditioner. The air conditioner includes an indoor unit 10 and an outdoor unit 20. The indoor unit 10 and the outdoor unit 20 are connected by a refrigerant pipe 21 through which the refrigerant flows, an electric wiring (not shown), and the like. Two refrigerant pipes 21 are provided, and the refrigerant flows from the indoor unit 10 to the outdoor unit 20 on one side and flows from the outdoor unit 20 to the indoor unit 10 on the other side.

The indoor unit 10 has a casing for accommodating various devices described later by integrating the base 11 and the front panel 12. On one base 11, a plate fin tube type indoor heat exchanger 13, a substantially cylindrical cross flow fan (fan) 1
4 etc. are provided. Furthermore, base 11
In addition to the above, an indoor unit control unit 15 including various electric circuit elements is provided for performing various operation controls and the like regarding the indoor unit 10. The indoor unit control section 15 is provided with an appropriate indicator 15a for displaying an operation status and an error mode. The indicator 15a can be externally checked (visually recognized) by, for example, a see-through portion 12a provided on the front panel 12. An installation plate 16 is provided behind the base 11, so that the indoor unit 10 can be installed on an indoor wall or the like.

The front panel 12 has a suction grill (suction port) 12b formed on each of the front and top surfaces. The indoor air (room air) is supplied to these suction grills 12b.
Thereby, the air is sucked into the indoor unit 10 from multiple directions. Incidentally, an air filter 17 is provided behind the suction grill 12b, and functions to remove dust such as sucked air. Also, front panel 1
2, an air outlet 12c is formed below the air outlet 2, from which warmed or cooled air is blown out. The air suction and the air blowing are performed by the rotation of the cross flow fan 14.

The indoor unit 10 is provided with a ventilator for sucking air inside the room and discharging the air outside the room. This ventilator includes a ventilation fan 18 dedicated to ventilation, a ventilation inlet 12d dedicated to ventilation opened in the front panel 12, and a ventilation hose 19. A ventilation inlet 12d is provided on the suction side of the ventilation fan 18. Communication, ventilation fan 1
One end of a ventilation hose 19 is connected to the discharge side of 8.
In the ventilation operation, the ventilation fan 18 is operated to suck the room air from the ventilation inlet 12d, so that the sucked room air is discharged to the outside through the ventilation fan 18 and the ventilation hose 19. The other end of the ventilation hose 19 is connected to the refrigerant pipe 21 and electric wiring (not shown).
It opens outside the room through a sleeve 2 (see FIG. 6) provided through the wall 1.

The indoor unit 10 described above includes a remote controller 22 as an operation unit for performing various driving operations. The remote controller 22 is provided with various switches and the like, and can transmit an operation signal of the air conditioner to a receiving unit (not shown) of the indoor unit control unit 15. Note that the operation of the air conditioner can be partially performed by switches (not shown) provided at appropriate places in the indoor unit.

The outdoor unit 20 includes an outdoor heat exchanger 20b, a propeller fan 20c, a compressor 20
f, an outdoor unit control unit 20g, and the like. The outdoor heat exchanger 20b is configured by a refrigerant pipe having a large number of plate-shaped fins around it, and realizes heat exchange between the refrigerant and outdoor air. The propeller fan 20c constantly generates new air in the housing 20a by generating an airflow that flows from the back to the front.
It is provided in order to improve the heat exchange efficiency in the outdoor heat exchanger 20b.

The surface of the housing 20a where the outdoor heat exchanger 20b and the propeller fan 20c face the outside,
Each is provided with a finger 20d and a fan guard 20e. The fingerings 20d are provided so that the plate-shaped fins are not damaged by an unexpected external impact. Similarly, the fan guard 20e is provided for the purpose of protecting the propeller fan 20c from external impact.

The compressor 20f supplies a low-temperature low-pressure gas refrigerant to the compressor 20f.
The refrigerant is converted into high-temperature and high-pressure gas refrigerant and discharged, and plays the most central role in the components constituting the refrigerant circuit. Incidentally, the refrigerant circuit is the compressor 20f
In addition to the above, the indoor heat exchanger 13 and the outdoor heat exchanger 2
0b, a refrigerant pipe 21, an expansion valve, and a four-way valve (the expansion valve and the four-way valve are not shown) for regulating the flow direction of the refrigerant. The refrigerant circulates between the indoor unit 10 and the outdoor unit 20. It is a circuit to make it.

The outdoor unit controller 20g includes the propeller fan 20c, the compressor 20f, and the other outdoor units 2c.
It performs operation control and the like relating to various devices provided in the device 0, and includes various electric circuit elements.

The outdoor unit 20 includes the housing 2 in addition to the above.
A pedestal 20h is provided in order to support Oa and avoid the influence of external vibration and the like. The compressor 2
The wall of the casing 20a close to 0f is a panel 20i that can be removed for maintenance of the compressor 20f and the like.
It is provided with.

In the following, the operation of the air conditioner having the above configuration will be described separately for each of the heating operation and the cooling operation. First, during the heating operation, the refrigerant turned into a high-temperature and high-pressure gas by the compressor 20f is sent to the indoor heat exchanger 13 of the indoor unit 10 through the refrigerant pipe 21. In the indoor unit 10, the cross flow fan 1
Heat is given from the high-temperature and high-pressure gaseous refrigerant passing through the indoor heat exchanger 13 to the room air taken in from the suction grill 12b by 4. This allows the front panel 12
Warm air is blown out from the lower outlet 12c. At the same time, the high-temperature and high-pressure gas refrigerant is condensed and liquefied in the indoor heat exchanger 13, and becomes a high-temperature and high-pressure liquid refrigerant.

The high-temperature and high-pressure liquid refrigerant is supplied to the refrigerant pipe 2 again.
1 through the outdoor heat exchanger 20 in the outdoor unit 20
b. In the outdoor unit 20, a low-temperature and low-pressure liquid refrigerant passes through an expansion valve (not shown) and is decompressed into a low-temperature and low-pressure liquid refrigerant. The liquid refrigerant takes away heat. Low-temperature, low-pressure liquid refrigerant
This evaporates and becomes a low-temperature and low-pressure gas refrigerant. This is sent to the compressor 20f again, and the above process is repeated.

Next, during the cooling operation, the refrigerant flows through the refrigerant circuit in a direction opposite to the above. That is, the refrigerant converted into a high-temperature and high-pressure gas by the compressor 20f is sent to the outdoor heat exchanger 20b through the refrigerant pipe 21, and gives heat to the outdoor air to be condensed and liquefied to be a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant passes through an expansion valve (not shown), becomes low-temperature and low-pressure liquid refrigerant, and is sent to the indoor heat exchanger 13 again through the refrigerant pipe 21. The low-temperature and low-pressure liquid refrigerant here takes heat from room air to cool the room air, and the refrigerant itself evaporates and becomes a low-temperature and low-pressure gas refrigerant. This is again the compressor 20
f and the above process is repeated.

These operations are performed by the indoor unit control unit 15 and the outdoor unit 20 housed in the indoor unit 10.
It is controlled by the outdoor unit control unit 20g housed therein cooperating.

Hereinafter, the first characteristic portion (first embodiment) of the present invention will be described in more detail. Although the indoor unit 10 described above is provided with a ventilation device,
The mounting structure of the ventilation fan 18 constituting this ventilation device will be described in detail with reference to FIGS. In the first example of the first embodiment, the indoor unit 1
0, the indoor heat exchanger 13 and the cross flow fan 14
And the like occupy most of the central portion, and the indoor unit control section 15 is disposed at one of the side ends (the right side when viewed from the front in the illustrated example). In the present invention, the ventilation fan 18 fixed and integrated with the indoor unit control unit 15 is attached to the base 11 of the indoor unit 10.

A concave portion 15a is formed on the right side surface of the indoor unit control section 15 by devising the arrangement of internal components.
The ventilation fan 18 is fitted into the housing 5a by a conventional means such as a screw. Also, the recess 15
a has a through hole 15 serving as a passage for sucking air to be ventilated.
b is drilled, and the air inlet of the ventilation fan 18 is connected to the through hole 15b. This intake port and through hole 1
5b is a ventilation inlet 12 opening in the front panel 12.
A ventilation suction flow path is formed in communication with d. Note that a flat ventilation fan mounting plate is protruded from the indoor unit control unit 15 in place of the recess 15a described above, and the through-hole 1 is formed in the mounting plate.
The ventilation fan 18 may be fixed by drilling 5b.

On the other hand, one end of a ventilation hose 19 is connected to a discharge port of a ventilation fan 18 fixed to the indoor unit control section 15. The ventilation hose 19, together with a refrigerant pipe 21, a power cord 5 and a drain hose 6, not shown, passes through the sleeve 2 penetrating the wall 1 of the building, and is opened to the outside of the room. The air is discharged outside the room. In addition, ventilation hose 19
An outlet cover 30 is provided in a portion where the door opens outside to prevent rain and wind from entering. In FIG. 3, reference numeral 12e denotes a louver motor for operating a louver provided in the outlet 12c, and 14a denotes a cross flow fan
The reference numeral 18a in FIG. 4 denotes a power cord (harness).

By adopting such a structure for mounting the ventilation fan 18, the ventilation fan 18 which is a part to be maintained and the indoor unit control unit 15 are integrated. Needless to say, even in maintenance work required after installation, it is possible to handle attachment / detachment to / from the indoor unit 10 as an integral part. That is, the separation and integration of the indoor unit control unit 15 and the ventilation fan 18
0, so that the indoor unit 10
The workability of assembling and maintenance is improved and facilitated.
In addition, since the ventilation fan 18 has a simple structure and is integrated into the indoor unit control section 15 and is almost completely accommodated in the concave portion 15a, a reliable ventilation function can be obtained with a simple shape having little unevenness as a whole. It is also relatively easy to secure an installation space within ten limited spaces.

In FIGS. 2 to 4 described above, the ventilation fan 18 and the ventilation hose 19 are directly connected. However, in the second embodiment according to the first embodiment shown in FIG.
The adapter 23 is interposed in the connection part because the shape of the outlet of the ventilation fan 18 and the shape of the ventilation hose 19 are different. The adapter 23 is a supporting member common to the ventilation fan 18, that is, the recess 1 of the indoor unit control unit 15.
5a is fixed. The ventilation fan 18 and the adapter 23 are each fixed to the recess 15 a by a conventional means such as screwing a flange portion, and are connected in a state where the outlet of the ventilation fan 18 is fitted to the end of the adapter 23. In other words, the adapter 23 does not have a direct mounting relationship with the ventilation fan 18, and therefore, the adapter can be used even when there is no appropriate mounting portion on the ventilation fan 18 side. For this reason, an increase in the number of parts due to the use of the adapter 23 can be minimized, and only the ventilation fan 18 can be removed alone at the time of service such as parts replacement or maintenance. This also has the effect of making it easier. In addition, as the support member common to the ventilation fan 18 and the adapter 23, for example, the base 11 which is a main component of the indoor unit 10 can be used in addition to the indoor unit control unit 15 described above.

Next, a description will be given of a second characteristic portion (second embodiment) of the present invention. The ventilation hose 19 described above
As shown in FIGS. 6 to 9 as a first example of the second embodiment, the ventilation hose 19 penetrates the sleeve 2 of the wall 1 and opens to the outside. The case 50 is attached to the. This case 50
The inner peripheral surface is a hollow cylindrical member having a substantially D-shaped cross section similar to that of the ventilation hose 19, and a positioning stopper 51 for restricting the insertion amount of the ventilation hose 19 is protruded from the inner peripheral surface. Is fitted and attached to the outer circumference of the.

An opening / closing valve 52 for opening / closing the outlet of the ventilation hose 19 is provided in the case 50.
The on-off valve 52 is rotatably supported by a rotating shaft 53 in the case 50, and is closed when the operation of the ventilation device is stopped and opened when the ventilation device is operated. The illustrated on-off valve 52 is configured to be closed by its own weight when the operation is stopped, and to be opened by an airflow generated by the operation of the ventilation fan 18 during the operation.
3 and is divided into a valve body 52a and a balancer 52b (see FIG. 9). In this case, the balancer 52 which is relatively short in the vertical direction is compared with the valve body 52a which is relatively long in the vertical direction and has a thin cross section.
The thickness of b is increased to adjust the upper and lower weight balance with respect to the rotating shaft 53. As a result, the on-off valve 52 closes by its own weight when the operation of the ventilator is stopped, and easily opens even with a slight airflow generated by the operation of the ventilator.

Further, on the inner surface of the case 50 described above,
Stoppers 54 and 55 for regulating the fully closed position and the fully open position of the on-off valve 52 are provided. The stopper 54 that defines the fully closed position is configured such that the on-off valve 52 that is suspended by its own weight
This restricts further rotation toward the ninth side. The stopper 55 that defines the fully open position regulates the maximum opening degree of the on-off valve 52 and regulates the opening and closing within 90 degrees from the fully closed position defined by the stopper 54. In other words, the stopper 55 restricts the on-off valve 52 from opening beyond the horizontal position. As a result, when the operation of the ventilator is stopped, the on-off valve 52 quickly moves to the fully closed position by its own weight. .

In order to protect the on-off valve 52 as described above, a lattice member 56 is provided at the outlet side opening of the case 50. In the illustrated example, one vertical lattice member 56 is provided at the center of the outlet of the case 50. However, the lattice member 56 prevents interference with the outside of the on-off valve 52.
Therefore, two or more grid members may be provided above and below, or one or more horizontal grid members may be provided alone. Needless to say, it is effective to install both the vertical and horizontal grid members.

As described above, the outdoor outlet where the ventilation hose 19 opens is covered by the outlet cover 30 bolted to the wall 1 together with the case 50 attached to the outlet tip (see FIGS. 6 and 7). ). This exit cover 30
Is designed to prevent the wind from flowing backward from the outlet opening of the ventilation hose 19, or to prevent rain or insects from entering, and a detailed configuration thereof will be described later. The room air exhausted by the operation of the ventilator pushes the open / close valve 52 and flows out of the case 50 as shown by a white arrow in FIG. 31
The air is exhausted through the room. The opening 31 is opened downward at a position lower than the opening position of the ventilation hose 19, and a lattice portion 32 having a large number of fine slits formed in the middle thereof.
Is provided. Reference numeral 33 in the drawing denotes an outlet passage of the refrigerant pipe 21, the electric wiring 5, and the drain hose 6 that has passed through the sleeve 2, and reference numeral 34 denotes a fixing bolt.

Since such an outlet cover 30 is attached, the influence of the wind blowing outside does not reach the opening of the ventilation hose 19 and the opening / closing valve in the case 50. , The on-off valve 52 operates in the closing direction in response to the reverse wind, so that the ventilation hose 1
There is no headwind to the inside of 9 and a whistling sound is emitted. Also, since the opening position of the opening 31 is lower than that of the ventilation hose 19, it is possible to prevent rainwater from entering the case 50. Further, by providing the grid portion 32 for narrowing the passage, it is possible to prevent insects and the like from entering from the exhaust passage.

The outlet cover 30 is a member attached so as to cover the outlet of the ventilation hose 19. The outlet cover 30 has a cover body 36 having a ventilation hole 35 provided with a lattice portion 32. And a waterproof hood 37 that covers the ventilation port 36. The cover body 36 is fixed to the outer surface of the wall 1 with a plurality of bolts 34, and a waterproof hood 37 is fixed to the cover body 36 with screws 38.

The vent 36 of the outlet cover 30 is located substantially on the extension of the outlet opening of the ventilation hose 19 in a predetermined mounting state. The waterproof hood 37 attached so as to cover the ventilation port 36 forms a downward opening 31 as an exhaust passage for room air exhausted by the ventilation fan 18. The outlet cover 30 configured as described above is similar to the one shown in FIG.
As shown in FIGS. 10 and 11, a string member may be fixed to the wall 1 by bolting as shown in FIG. 10 as a second example of the second embodiment. Specifically, it may be fixed to the refrigerant pipe 21 covered with the heat insulating material 4 by using a belt 39 having a plurality of locking projections 39a near both ends. The belt 39 used here is made of a relatively flexible material such as polypropylene or nylon. The belt 39 can pass through the opening of the lattice portion 32 even at the top of the thickest locking projection 39a, and the locking projection 39a gradually increases from the end side to the center side. It is composed of an inclined surface 39b and a vertical surface 39c (see FIG. 12). Therefore,
The belt 39 relatively easily passes from the inside (wall 1 side) to the outside of the outlet cover 30, while the vertical surface 39 c passes through the lattice section 32 from the outside to the inside.
Is locked by the surrounding wall of the vehicle. Therefore, the lattice part 3
The fixing force of the outlet cover 30 can be easily increased by pulling the belt 39 passing through the belt 2 toward the user.

Thus, in another mounting example of the outlet cover 30, by using the above-mentioned belt 39, the locking projections 39 a at both ends of the belt 39 wound around the refrigerant pipe 21 are locked to the peripheral wall of the lattice portion 32. Thus, the outlet cover 30 is fixed to the refrigerant pipe 21 so as to be hung thereon, and is suitable for a case where a bolt hole cannot be formed in the wall 1. Moreover, the refrigerant pipe 21 has relatively high rigidity and is sufficient for holding the lightweight outlet cover 30 because it is usually a resin molded product. In this case, the waterproof hood 37 is attached by fastening the screw 38 after fixing the cover main body 36 to the refrigerant pipe 21. In addition, as the string member for fixing the outlet cover 30 to the refrigerant pipe 21, besides the above-described belt 39, a wire coated with vinyl or the like can be used.

Next, a third example of the second embodiment shown in FIG. 13 will be described. Here, the cover body 3
6, the mounting direction of the waterproof hood 37 is variable. This is because the drawing direction of the refrigerant pipe 21 and the like that has exited the sleeve 2 is not always downward, and for example, when the refrigerant pipe 21 is drawn out sideways, the outlet passage 33
Opening is also horizontal. However, since the waterproof hood 37 needs to always have the opening directed downward for that purpose, the opening direction of the waterproof hood 37 is made variable from the viewpoint of sharing parts. In the example shown in FIG.
The joint surface between the cover body 36 and the waterproof hood 37 is provided with a concave portion 40a and a convex portion 40b each having a pitch of 90 degrees. The concave portion 40a and the convex portion 40b are fitted to each other, and by changing the fitting position, the cover body 3
6, only one opening direction of the waterproof hood 37 can be selected from four directions, up, down, left, and right. That is, the opening of the waterproof hood 37 can always be directed downward even if the outlet cover 30 opens the outlet passage 33 in any of up, down, left, and right directions. In addition, the fitting of the concave portion 40a and the convex portion 40b facilitates the positioning of the waterproof hood 37 and makes it difficult for the waterproof hood 37 to be displaced. Reference numeral 38 in the figure indicates a fixing screw.

[0059]

According to the indoor unit and the air conditioner of the present invention described above, the following effects can be obtained. (1) Since the indoor unit control unit and the ventilation fan, which are the target parts of the maintenance service, are integrated, the attachment and detachment to the indoor unit can be performed simultaneously and easily, which has a great effect on improvement of workability. . (2) A reliable ventilation function can be obtained with a simple structure, and an increase in the number of mounting parts can be suppressed. In addition, it is easy to secure an installation space in the indoor unit, and there is an effect that the degree of freedom in design is increased. (3) When an adapter is required between the ventilation fan and the ventilation hose, the adapter can be easily attached even if there is no attachment part on the ventilation fan side, so the restriction on the selection of the ventilation fan is reduced, and the design is reduced. This has the effect of increasing the degree of freedom. (4) The number of parts required for mounting the adapter can be minimized, and the ventilation fan can be removed alone during maintenance, which is excellent in terms of workability.

(5) By providing the outlet cover,
Since the on-off valve is sufficiently protected against invasion of outdoor wind, rainwater and insects, the indoor unit and the air conditioner are excellent in reliability and durability. In addition, even before installing the outlet cover, the lattice member provided in the case allows
The on-off valve is protected from interference with foreign objects such as tools. (6) Since a string-like member such as a band is used for fixing the outlet cover to the refrigerant pipe, it is not necessary to make a hole in the wall. (7) Since the opening direction of the opening of the waterproof hood with respect to the cover main body is made variable, the opening of the waterproof hood can always be directed downward even if the mounting direction of the cover main body changes according to the situation at the site. Therefore, parts can be shared and the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a partial sectional perspective view showing an embodiment of an indoor unit and an air conditioner according to the present invention.

FIG. 2 is a sectional view of a main part according to a first example of the first embodiment of the present invention.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a perspective view showing an example of a mounting structure of a ventilation fan according to a first example of the first embodiment of the present invention.

FIG. 5 is a diagram showing a second example of the first embodiment of the present invention.

FIG. 6 is a view according to a second embodiment of the present invention, and is a cross-sectional view of a main part showing a configuration around an outdoor outlet side distal end portion of a ventilation hose.

FIG. 7 is a sectional view of FIG. 8 as viewed from the front.

FIG. 8 is a front view showing a configuration of a case.

FIG. 9 is a view according to a second embodiment of the present invention, and is a cross-sectional view showing a state in which a case having an on-off valve is attached to the tip of a ventilation hose.

FIG. 10 is a diagram according to a second embodiment of the present invention, and FIG.
It is principal part sectional drawing which shows the modification (2nd Example) of (a).

FIG. 11 is a partial sectional perspective view of FIG. 10;

12A and 12B are diagrams showing a configuration of a band used in FIGS. 10 and 11, wherein FIG. 12A is a plan view and FIG. 12B is a front view.

FIG. 13 is a perspective view showing a configuration example of an outlet cover including a waterproof hood and a cover main body, and showing an example of a mounting structure of a waterproof hood in which an opening direction of an opening portion is variable (the second embodiment). 3 Examples).

FIG. 14 is a cross-sectional view showing an outline of a conventional ventilation device.

FIG. 15 is an exploded perspective view showing an example of a conventional adapter mounting structure between a ventilation fan and a ventilation hose.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Indoor unit 11 Base 12 Front panel 12a Transparent part 12b Suction grill (suction port) 12c Blow outlet 12d Ventilation suction port 13 Indoor heat exchanger 14 Cross flow fan (fan) 15 Indoor unit control part 16 Installation plate 17 Air filter 18 Ventilation Fan 19 Ventilation hose 20 Outdoor unit 20b Outdoor heat exchanger 20c Propeller fan (outdoor fan) 20f Compressor 20g Outdoor unit control unit 21 Refrigerant piping 22 Remote controller (operation unit) 23 Adapter 30 Outlet cover 31 Opening 36 Cover body 37 Waterproof Hood 50 Case 52 On-off valve

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kei Matsuda 3-1-1 Asahimachi, Nishibiwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Air Conditioning Works of Mitsubishi Heavy Industries, Ltd. 3-chome No. 1 Mitsubishi Heavy Industries, Ltd. Air Conditioner Works

Claims (9)

[Claims] 1. A fan for sucking indoor air from an inlet and blowing out air from an outlet, an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from an outdoor unit, and a ventilation fan. A ventilating device including a ventilation hose connected to the ventilation fan, for sucking indoor air and exhausting the air to the outside, and an indoor unit control unit including various electric circuit elements, wherein the indoor unit control unit includes the ventilation fan. And fix
An indoor unit, wherein the indoor unit control unit and the ventilation fan are integrated. 2. An outdoor unit comprising: an outdoor heat exchanger; a compressor for delivering a high-temperature and high-pressure gaseous refrigerant to the heat exchanger; and an outdoor unit controller comprising various electric circuit elements. A fan for sucking indoor air and blowing it out from an outlet, an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from an outdoor unit, a ventilation fan and ventilation connected to the ventilation fan A ventilation unit that includes a hose and sucks indoor air and exhausts the air outside the room; and an indoor unit control unit that includes various electric circuit elements and that intermittently operates the ventilation unit. The indoor unit control unit includes the ventilation fan. An air conditioner, comprising: an indoor unit in which the indoor unit control unit and the ventilation fan are integrated with each other. 3. A fan for sucking indoor air from an inlet and blowing it out from an outlet, an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from an outdoor unit, and a ventilation fan. The ventilation fan includes a ventilation hose connected to the ventilation fan via an adapter, and a ventilation device that sucks room air and exhausts the air outside the room; and an indoor unit control unit including various electric circuit elements. An indoor unit, wherein each adapter is fixed to a common support member. 4. An outdoor unit comprising: an outdoor heat exchanger; a compressor for delivering a high-temperature and high-pressure gaseous refrigerant to the heat exchanger; and an outdoor unit controller comprising various electric circuit elements. A fan for sucking indoor air and blowing it out from an outlet, an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from an outdoor unit, a ventilation fan and ventilation connected to the ventilation fan A ventilator that has a hose and sucks indoor air and exhausts it to the outside; and an indoor unit controller that is made up of various electric circuit elements and intermittently operates the ventilator. The ventilating fan and the adapter are common to each other. And an indoor unit fixed to the supporting member. 5. An outdoor unit comprising an outdoor heat exchanger, a compressor for delivering a high-temperature and high-pressure gaseous refrigerant to the heat exchanger, and an outdoor unit control section comprising various electric circuit elements. A fan for sucking room air and blowing it out from an outlet, an indoor heat exchanger for exchanging heat between the room air and a refrigerant supplied from an outdoor unit, a ventilation fan for sucking room air, and the ventilation fan A ventilating device comprising a ventilation hose connected to the ventilation hose for guiding and sucking the indoor air to the outside, and an indoor unit comprising an indoor unit controller comprising various electric circuit elements, The air conditioner includes a cover main body provided with a vent at the outdoor outlet where the ventilation hose opens, and having a vent, and a waterproof hood covering the vent and forming an opening downward. An air conditioner characterized by providing an outlet cover. 6. The air outlet has a plurality of openings formed in a lattice shape, and the outlet cover is fixed to the refrigerant pipe using a string-shaped member that passes through the opening and is wound around the refrigerant pipe. The air conditioner according to claim 5, wherein: 7. The cord-shaped member is a band having a plurality of locking projections near both ends, and the locking projections are locked and fixed to a peripheral wall of the opening. 7. The air conditioner according to 6. 8. The air conditioner according to claim 5, wherein the waterproof hood is variably attached to the cover main body in an opening direction of the opening. 9. The waterproof hood is configured such that a concave portion and a convex portion provided at a 90-degree pitch on the joint surface of the cover body and the waterproof hood are fitted to each other, and the opening direction is selected from four directions, up, down, left, and right. The air conditioner according to claim 8, wherein the air conditioner is configured to be capable of being operated.