JPH05223275A - Air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to maintain a stable air-conditioning effect by setting a depth dimension of an indoor unit so that it can be installed in a specified narrow place. CONSTITUTION:A depth dimension of an indoor unit 1 is set so that a blowoff port of air-conditioning air of the indoor unit 1 holds a required opening dimension in front of the position of the dimension from the back of the indoor unit 1 which exceeds a width dimension of curtain rails 37. Therefore the indoor unit 1 can be installed fitly in a narrow place between the upper part of a window and a ceiling inside a room of an apartment house, for instance, and even when curtains are provided double for the window, the blowoff port of the indoor unit 1 does not interfere with the curtain rails 37. Accordingly, blowoff and flow of the air-conditioning air are not hindered. Thereby a stable air-conditioning effect can be maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and in particular, it is suitable for installation conditions in a living environment, has good handleability in fitting a casing of an indoor unit and a discharge frame, and further controls operation by an optical signal. The present invention relates to an air conditioner having an operation function of performing.

[0002]

2. Description of the Related Art With the widespread use of air conditioners in general households, along with the improvement of performance that enhances the comfort of the living environment, the design, handleability, and efficient air conditioning effect of installation conditions have been improved. It came to be evaluated comprehensively on each side. In particular, it is desirable to install the air conditioner in a small living space such as an apartment or a condominium at a position where it has good balance with other indoor furnishings, does not get in the way, looks good, and has a good air conditioning effect. It is rare.

As a matter of course, the good handling property in maintenance also raises the evaluation as an excellent product. Conventionally, a technique described in JP-A-64-14528 is known for a fitting portion between a casing and a discharge frame that constitutes an air conditioner. According to the publication, there is a gap between the front panel (corresponding to the casing in this specification) and the stabilizer (corresponding to the discharge frame in this specification),
There is a problem that the indoor unit is exposed to dew by sucking in air that does not pass through the filter or entraining humid air. In order to prevent this, the above-mentioned Japanese Patent Laid-Open No.
In the technique described in Japanese Patent No. 4-14528, a filter having a protruding piece larger than the gap between the front panel and the stabilizer in the lower portion is adopted.

Further, as a problem related to the operation performance, the indoor unit of the air conditioner is often mounted at a high place at the end of the room. Therefore, it is common to use a wireless remote controller. In this case, a reception window is opened on the front surface and the bottom surface so that reception can be surely performed, and each of the reception elements is provided or a reflection mirror is provided to extend the wireless reception range to secure the wireless reception range specification of the air conditioner. As a conventional technique relating to this, for example, Japanese Patent Laid-Open No.
No. 0-140041 is known.

[0005]

The present invention (first invention)
The purpose (first purpose) of the compact indoor unit is that it can be installed in a narrow space such as between pillars of the living room, between the windows and the ceiling, or on the curtain equipment, and does not interfere with the air conditioning effect. To provide an air conditioner.

Next, as a second problem, the above-mentioned JP-A-64 is used.
Japanese Patent No. 14528 does not disclose anything about fitting the casing (front panel) and the discharge frame (stabilizer), and does not describe attaching or detaching the casing. The object (second object) of the present invention (second invention) is air that has good adhesion in the fitting between the casing that constitutes the indoor unit of the air conditioner and the discharge frame, and that is easy to attach and detach. To provide a harmony machine.

Next, as a third problem, due to the diversification of installation locations of air conditioners, only one receiving window is provided because of the structure of the air conditioner. It has become difficult to satisfy the reception specification range because the degree of freedom in color tone is required in terms of downsizing and design. Purpose of the present invention (third invention) (third purpose)
Is to provide an air conditioner that is excellent in design and interior design and that is equipped with a light receiving filter that can extend the wireless reception range.

[0008]

In order to achieve the above first object, the structure of the first invention in the air conditioner of the present invention is an air conditioner having an indoor unit and an outdoor unit. The conditioned air outlet of the unit
In order to maintain the required opening size in front of the position that exceeds the width of the curtain rail from the back of the indoor unit,
The depth dimension of the indoor unit is set.

Next, in order to achieve the above second object,
The most basic configuration of the second invention in the air conditioner of the present invention is a casing that constitutes an air conditioner, and a discharge frame provided at an upper portion of a blowout port on the front surface of the casing, and the casing is fitted with the casing. A contact surface that is in close contact with the discharge frame is provided, and a flexible claw portion is formed on one of the casing and the discharge frame, and a concave portion into which one end of the claw portion is fitted is provided on the other side. It is a thing.

In order to achieve the above second object,
A more specific configuration of the second invention in the air conditioner of the present invention is a casing in which an air conditioner and a discharge frame provided at an upper portion of a blowout port on the front surface of the casing are fitted to each other. The discharge frame is provided with an abutting surface in close contact with each other, the casing is provided with a claw portion with a tip end facing downward, and the discharge frame is provided with a first concave portion into which one end of the claw portion is fitted, and the casing. A second concave portion for alignment is provided in the vicinity of the claw portion, and a convex portion that fits into the second concave portion is provided in the vicinity of the first concave portion of the ejection frame.

Further, in order to achieve the third object, the configuration of the third invention in the air conditioner of the present invention is as follows:
In a filter that has a thin film that selectively passes light rays of a specific wavelength formed on the surface of a plate-shaped molded product made of transparent or translucent, milky white resin, the back surface of the light-receiving surface of the molded product is a lens The indoor unit is provided with a light receiving filter characterized by having a convex shape and a back surface being a rough surface.

[0012]

According to the first aspect of the present invention, for example, an indoor unit can be installed exactly in a narrow space between the window and the ceiling in the room of a condominium, and a double curtain is attached to the window. However, the air outlet of the indoor unit does not interfere with the curtain rail, and therefore, there is no hindrance to the blowing and distribution of the conditioned air, and a stable air conditioning effect can be maintained.

Next, according to the second aspect of the present invention, the claws provided on the casing and the recesses provided on the discharge frame enable close contact between the both in the depth direction and the vertical direction, and further, the projections provided in the vicinity thereof. Further, the fitting of the recesses allows the positioning in the left-right direction, thereby reducing the gap between the casing and the discharge frame. For this reason, it is possible to prevent dew condensation due to entrainment of humid air. In particular, since the tip of the claw provided on the casing is directed downward, the claw can be bent with respect to the attaching and detaching direction of the casing, and the attaching and detaching with the chassis to which the casing is attached and the discharge frame can be performed without destruction or deformation. It can be done easily.

Further, according to the third aspect of the invention, by making the back surface of the light receiving portion of the light receiving filter convex, the optical signal is easily introduced into the light receiving element provided on the back side substantially at the center of the convex shape of the light receiving portion. Also, by forming fine unevenness on the convex surface, light that does not reach the light receiving element by the lens effect alone will reach the light receiving element by diffuse reflection or diffusion. Optical signals can be received and the wireless reception range is expanded. further,
By providing the display unit with the material surface exposed, the light of the light emitter on the back side can be transmitted and emitted over the entire surface, and the operation state can also be displayed by the light receiving filter.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, each embodiment of the present invention will be described with reference to FIGS.
Will be described. [Embodiment 1] First, an embodiment of the first invention will be described with reference to FIGS. 1 to 5. 1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention, and FIG.
3 is a side sectional view showing an installed state of the indoor unit of FIG.
4 is an explanatory view showing an example of an installation position of the indoor unit, FIG. 4 is an explanatory view showing another example of the installation position of the indoor unit, and FIG. 5 is a side view of the installation example of FIG. 4. Here, FIG. 2 corresponds to a detailed view of a main part of FIG.

As shown in FIG. 1, the indoor unit 1 in the air conditioner of this embodiment is elongated and compact in size. That is, as shown in FIG. 3, the width dimension is 815 mm (the rear chassis portion 785 mm) that fits between the columns (3 shaku = half spaces) of the Japanese-style room. Especially as shown in FIG.
Since the remaining size of the Japanese-style room having a width of 1.5 is the half of the width provided with windows, the indoor unit of this embodiment having a size within the width of the half is not restricted by the installation place. Moreover, it has a slim size of 298 mm in height, and the installation property is further improved compared to the conventional one, and it can be installed neatly even in a narrow space such as on a large terrace window or a down ceiling. For example, as shown in FIGS. 4 and 5, the height from the floor surface to the ceiling surface is 2400
mm, window height 2000 mm, large terrace windows, condominium beams, etc. even if the wall surface width is 40 cm or less.

The indoor unit 1 shown in FIG. 1 is equipped with a wireless remote controller 22. By transmitting an optical signal from the remote controller 22, it is possible to perform operation, stop, and various other operations. Even when installed in a high place as described above, the operation can be easily performed. The optical signal receiving unit and the driving operation will be described later.

Further, the depth dimension of the indoor unit 1 is such that the width of the curtain rail 37 (from the front of the indoor unit is taken into consideration in consideration of the influence of the curtain when installed on a window whose wall width is 40 cm or less). It is set to a dimension larger than the depth of the curtain rail (for example, 179 mm). This will be described in more detail with reference to FIG. Figure 2
In the drawing, 2 is a chassis, 3 is a casing, 3a is a lower end portion of the casing, 4 is a suction grill, 41 is a fan, 5
Indicates a discharge frame. In the example shown in FIG. 2, two rows of curtain rails 37 are arranged in front of the window, and curtains 38 are double mounted. Two rows of curtain rails 37
Has a width of about 90 mm.

The indoor unit 1 includes a mounting plate 4 provided on the wall surface.
0 is installed via the claw portion 39. A space of about 50 mm is secured between the ceiling surface and the upper surface of the indoor unit 1. Due to this upper space, the flow of air to the suction port on the upper surface of the indoor unit 1 becomes smooth. The depth dimension from the wall surface behind the indoor unit 1 to the air outlet, that is, from the casing lower end 3a is 89 mm (82 mm from the rear surface of the indoor unit 1 to the air outlet), which is approximately the same as the width dimension 90 mm of the two rows of curtain rails 37. It is said that. Thus, even if the conditioned air is blown obliquely downward from the discharge port, for example, obliquely downward at an angle of 65 to 70 degrees in the embodiment, it does not hit the curtain. In short, the outlet of the conditioned air of the indoor unit 1
The depth dimension of the indoor unit 1 is set so that the conditioned air can be discharged to the front from the position of the dimension exceeding the width dimension of the two rows of curtain rails 37 from the rear surface of the indoor unit and the required opening dimension can be maintained.

Thus, even if the indoor unit 1 is installed above the two rows of curtain rails 37, the discharged air is supplied to the room without being blocked by the curtain 38, and the air conditioning effect can be improved. On the other hand, by ensuring a large depth of the indoor unit 1, the effective space of the heat exchanger can be expanded, and the heat exchange capacity can be improved, the laminar flow effect can be achieved, or the fan speed can be reduced, and as shown in FIG. The portion of the back nose 2a formed on the chassis 2 close to the fan 41 is located above the extension of the line 41b connecting the portion of the nose 5a close to the fan 41 and the fan center 41a (5 mm in the embodiment). Therefore, when the air conditioning capacity is the same, noise reduction of 3 to 4 dB can be realized as compared with the conventional case.

Next, an embodiment of the second invention will be described with reference to FIGS. 6 to 10. [Embodiment 2-1] FIG. 6 is a perspective view showing the appearance of an indoor unit of an air conditioner according to an embodiment of the present invention, and FIG.
FIG. 8 is a partial view of the casing and the discharge frame forming the fitting portion of the indoor unit of FIG. 6, and FIG. 8 is an enlarged cross-sectional view of the fitting portion of FIG. 7.

In the indoor unit 1 shown in FIG. 6, a heat exchanger, a fan, etc. are appropriately arranged inside. Chassis 2 as a base to mount these mechanical parts and electric parts
The casing 3, the discharge frame 5 and the like are fitted to the casing 3 by a method described later, and the casing 3 is attached with a suction grill 4 which can be opened and closed freely. Furthermore, casing 3
A cosmetic piece 8 having a light receiving portion for performing operation control by an optical signal and an operation display portion is attached to the.

The conditioned air of controlled temperature and humidity is
It is discharged into the room from the discharge port 20 which is a blowout port. It is the discharge frame 5 that forms the discharge port 20, and the casing 3
Are closely fitted to each other at the mating surface 7 on the front surface, both side flange portions 3b and the lower end portion 3a of the casing. The side flange portions 3b and the lower end portion 3a are fitted together by butting each molded product, but the mating surface 7 on the front surface is not only butted but also fitted closely by the fitting portion 6 having the fitting shape of this embodiment. It FIG. 7 shows a partial enlargement of the fitting portion 6.

As shown in FIG. 7, a fitting claw 6a has a claw tip portion 15 facing downward on the back side of the casing 3, and the notch 16 is provided so that the claw 6a can be bent in the front-back direction within elastic deformation. Is provided. Since the claw tip 15 is separated from the root of the claw 6a in the front-rear direction, it can be bent in the vertical direction within the elastic deformation, and at the time of fitting with the discharge frame 5, the meat formed on the upper surface of the discharge frame 5. It is inserted into the recessed portion 13 which is the first recessed portion provided in the thick portion 9. On the other hand, in the vicinity of the claw 6a, in the present embodiment, on the left and right sides of the claw 6a, recesses 17 relating to the second recess are provided, and the projections 12 provided on the ejection frame 5 are introduced. Here, the recessed portion 13 formed in the discharge frame 5 preferably has a shape that does not penetrate in the up-down direction. When the recessed portion 13 has a through hole shape instead of a recessed portion, discharge cool air enters the back side of the casing 3 through this through hole during cooling. It may be cooled by heat and may cause dew condensation, and if it is penetrated, it is necessary to seal this through hole with another component.

When the casing 3 and the discharge frame 5 shown in FIG. 7 are fitted together, the lower surface 18 of the casing 3 and the surface 14 of the discharge frame 5 are in close contact with each other on the front mating surface 7 shown in FIG. The lower surface 11 of the protrusion 12 formed on the casing 5 is the casing 3
Notch 1 formed below the recess 17 formed in the
By closely contacting one surface 17b of 7a, the casing 3
It is possible to realize close fitting at the mating surface 7 between the discharge frame 5 and the discharge frame 5.
A cross section of this close fitting is shown in FIG.

When the casing 3 is rotated in the direction of arrow A, the claw 6a of the fitting portion 6 is elastically deformed upward, so that this portion can be easily removed without damage. On the contrary, in the case of mounting, the fitting portion 6 is elastically deformed in the upward direction, and the claw tip portion 15 has the concave portion 13 of the discharge frame 5.
Easily introduced to. However, in the front-rear direction, the abutment surface 21 and the claw tip portion 15 make it possible to firmly and closely fit using the elastic deformation of the claw 6a. Further, the convex portion 1 of the discharge frame 5
Not only the fitting portion 6 is positioned in the left-right direction by the second member 2, but the casing 3 and the discharge frame 5 are fitted so that the lower surface 18 of the casing 3 is sandwiched by the convex portion 12 and the surface 14 in the vertical direction. Therefore, the upper and lower sides of both are the lower surface 1
The abutting portion 19 formed by 8 and the surface 14 enables close fitting.

Casing 3 usually formed by injection molding
The discharge frame 5 and the discharge frame 5 are often long in the lateral direction like an indoor unit of an air conditioner, and there is a fear of warpage after molding. However, according to the present embodiment, both of them are closely fitted even if there is some warpage. Therefore, the gap due to the warp between the casing 3 and the discharge frame 5 can be corrected. In this way, the abutting surfaces 21, 19 relating to the front-rear, left-right and up-down fitting surfaces.
Since the casing 3 and the discharge frame 5 are in close contact with each other, the conditioned air whose temperature and humidity are controlled is blown out without going around the gap between them as indicated by arrow B. As a result, cold air does not enter the casing 3, so that dew does not occur.

The structure of this embodiment is similar to the indoor unit 1
The number of the fitting portions 6 is determined by the size of the nozzles and the width dimension of the discharge port 20, and is not limited to one substantially central portion as shown in FIG. Further, in the case where there are a plurality of fitting portions, a corresponding effect can be obtained without the second concave portion and the convex portion that are fitted into the second concave portion.

[Embodiment 2-2] FIG. 9 is an enlarged sectional view of a fitting portion between a casing and a discharge frame according to another embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 8 are the same parts as those in the previous embodiment, and therefore their explanations are omitted. The embodiment shown in FIG. 9 is the reverse of the embodiment shown in FIG. 8 in the configuration of the claw portion 6a and the recessed portion 13. That is, the concave portion 13 ′ is provided on the upper portion of the discharge port 20 on the front surface of the casing 3, and the claw portion 6 a ′ is provided on the discharge frame 5. In this case, the claw tip portion 15 'of the claw portion 6a' formed on the discharge frame 5 faces upward, and the recessed portion 13 'of the casing 3 is formed so as to match this. According to the embodiment shown in FIG. 9, it is difficult due to the mold structure, but the same effect as that of the previous embodiment can be obtained.

[Embodiment 2-3] FIG. 10 is a partial view of a casing and a discharge frame forming a fitting portion of an indoor unit according to still another embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 7 are the same parts as those in the previous embodiment, and therefore their explanations are omitted. In the embodiment shown in FIG. 10, the casing 3
The convex portion 12 'is provided near the fitting portion 6 and the concave portion 17' is provided on the discharge frame 5 side. According to the embodiment shown in FIG. 10, the same effects as those of the previous embodiments can be obtained.

Next, an embodiment of the third invention will be described with reference to FIGS. 11 to 13. [Embodiment 3] FIG. 11 is a perspective view showing an embodiment of a makeup piece forming the light receiving display portion of the indoor unit of FIG. 6, and FIG. 12 is a diagram showing a result of studying the light receiving working distance.
FIG. 12 is a comparative explanatory diagram of the light receiving performance of the light receiving filter of FIG. 11 for each cross-sectional shape.

The decorative piece 8 shown in FIG. 11 is formed of a milky white resin 84 such as transparent or translucent, and has a light receiving surface 83 formed so that the light receiving element is arranged on the back side. The decorative piece 8 has an outer shape that fits the casing 3 (see FIG. 6) of the indoor unit, and a fitting portion for attachment and the like are also formed at the time of molding. Further, the surface 81 is covered with an appropriately toned ink or paint from the aspect of design, and has a display portion 82 in which the material surface is partially exposed.

The light receiving surface 83 is coated with a filter material so that light rays of a selected wavelength are transmitted, and the light receiving back surface 83a has a convex shape such as a cubic curved surface. Here, the coating material for the surface 81 and the light receiving surface 83 does not need to be a limited method, and painting, silk screen printing or the like can be considered. Further, an in-mold method of forming these coating materials on the surface of a film such as polyester in advance and transferring only the coating material to the molded article in the mold at the same time as molding, and a method such as hot stamping are also sufficiently applicable. ..

The light receiving back surface 83a has a rough surface of 5 μm or more, and the light receiving surface 8 of the molded decorative piece 8 is formed.
The selected light ray that has passed through 3 is diffusely reflected and diffused when it is emitted from the front surface of the light receiving back surface 83a, so that a part of the light that leaves the light receiving element 90 (see FIG. 13) also reaches. This rough surface is a means for making light that cannot be condensed even with the convex shape of the light receiving back surface 83a reach the light receiving element 90.

Although it is desirable that the resin 84 be transparent,
When light from a light emitting body such as a light emitting diode (LED) located on the back side of the display unit 82 is emitted to the front surface of the display unit 82, a slight diffusing agent is contained in the resin 84 to allow uniform transmission. It emits light and the design is greatly improved. This diffusion effect also contributes to diffusion of an optical signal of a specific wavelength that has entered from the light receiving surface 83, and promotes light transmission to the light receiving element 90 as well as roughening the surface of the light receiving back surface 83a. It is needless to say that this diffusing agent is a material that is compatible with or uniformly dispersible in the resin 84 and is selected depending on the material of the resin 84.

Further, roughening the back surface of the display portion 82 is also one means for uniform transmission and emission. Further, the number of the display portions 82 is not limited, and it is possible to freely select the number of the display portions 82 to be formed according to the driving state by printing the surface 81 or the like. The display content is also formed near the display unit 82 by printing or the like.

In this way, various thin films of specific wavelength transmission type are formed on the light receiving surface 83 by silk screen printing,
In addition, FIG. 12 shows an example of the result of transmission confirmation when the surface state of the light receiving back surface 83a having a convex shape such as a cubic curved surface of the light receiving surface 83 is made a mirror surface and a rough surface. 12
Shows the light receiving working distance (m) on the horizontal axis and the ink type on the vertical axis, and shows a comparison between the mirror surface and the rough surface of the light receiving back surface for each ink. Here, the light-receiving working distance is the distance from the remote controller to the light-receiving surface of the indoor unit when the indoor unit is operated by remote control with the makeup piece 8 actually installed in the indoor unit. The resin 84 to be formed is a transparent AS resin containing a diffusing agent. As is clear from this result, the light receiving performance is significantly improved when the back surface 83a is roughened regardless of the ink type.

This rough surface condition is uniform and the surface roughness is 5 μm.
The above is effective, and preferably 10 μm to 50 μm
Is good. This state will be described with reference to FIG. Figure 1
3 (a), (b), and (c) are light receiving back surfaces 83a, respectively.
The decorative piece 8 having a flat surface 85, a convex surface 86, and a rough convex surface 87 is shown. An ink layer 88 in consideration of color tone is formed on the surface, and a thin film 89 that selectively transmits light rays of a specific wavelength is formed on the light receiving surface 83.

In the case of FIG. 13A, the light beam o having a specific wavelength reaches the light receiving element 90, but the light beam p does not.
In the case of (b), not only the light ray o but also the light ray p reaches the light receiving element 90 by the convex surface 86 of the light receiving back surface 83a, but it may not reach like the light ray q. This is determined by the curvature of the light receiving back surface 83a and the distance from the light receiving element 90. However, even with the ray q (c)
In the case of, when light is emitted from the back surface by the rough convex surface 87, there are, for example, light rays q1 and q2 diffused on the rough surface, in addition to the light ray q refracted by the convex curvature.
Here, a part q1 thereof can reach the light receiving element 90.

As described above, the light receiving performance is significantly improved by not only the light condensing effect by the convex back surface but also the diffusion effect by the rough surface. Although FIG. 13 shows the light entering at right angles to the light receiving filter, various light entering angles are conceivable in practical use, and this effect can be expected sufficiently. Further, even when the light receiving back surface 83a cannot be formed in a convex shape, some effect can be expected by roughening the flat surface.

According to the present embodiment, in an electric product such as an air conditioner which is operated by an optical signal, a filter constituting the receiving portion thereof, which is the makeup piece 8 in the present embodiment,
The light of a specific wavelength that has passed through the light receiving surface 83 forming this receiving portion is not only condensed by the convex shape of the cubic curved surface formed by the light receiving rear surface 83a, but even if it is condensed, it depends on the incident angle. Also receives light that does not reach the light receiving element 90.
There is an effect that the rough surface of the surface a diffusely reflects and diffuses the light so that it can be received.

Further, by incorporating a diffusing agent in the resin 84, not only the above effect is promoted, but also in the part integrally molded as the decorative piece 8, the part such as the display part 82 where the material surface is exposed is exposed. By providing the light, the light of the light emitting body such as the LED located on the back side can be uniformly transmitted and emitted to the front surface. Therefore, even the operating state can be displayed by the light receiving filter, and the light receiving filter and the operation display panel can be integrally formed.

Next, the case of operating this air conditioner will be described with reference to FIGS. 14 to 17. [Fourth Embodiment] FIG. 14 is an operation diagram of an air conditioner according to one embodiment of the present invention, FIG. 15 is a system diagram of a refrigeration cycle of an air conditioner according to one embodiment of the present invention, and FIG. FIG. 17 is a block diagram showing a control system of an air conditioner according to an embodiment of the present invention, and FIG. 17 is a flowchart showing a control procedure of the control system of FIG.

First, the structure of the air conditioner of this embodiment will be described with reference to FIGS. 15 and 16. FIG. 15 shows a refrigeration cycle system diagram, in which a four-way valve 33 is connected to a compressor 31, followed by an outdoor heat exchanger 35, a pressure reducer 36, an indoor heat exchanger 34, a four-way valve 33, and a compressor 31. One cycle constitutes a refrigeration cycle. As a blower, the outdoor fan motor 3
2 and the indoor fan motor 30. Moreover, in order to detect the temperature of each part, the room temperature detection part 27, the indoor heat exchange temperature detection part 28, and the outdoor heat exchange temperature detection part 29 are provided. The flow of the refrigerant during cooling is indicated by a solid line, and the flow of the refrigerant during heating is indicated by a broken line.

Next, the configuration of the control system will be described with reference to the block diagram of FIG. The air conditioner 23 of this embodiment includes a control unit 2 that controls the main body such as an indoor unit and an outdoor unit.
4, the remote controller control unit 2 provided in the remote controller 22.
2a connected to the operation / stop button 25 and the preheat button 26, the light emitting portion 22b of the optical signal connecting the remote control 22 and the indoor unit, the light receiving portion of the makeup unit 8 (see FIG. 6) provided in the indoor unit 80, room temperature detector 2
7, indoor heat exchange temperature detection unit 28, outdoor heat exchange temperature detection unit 29
Detection units, the indoor fan motor 30, the compressor 3
1, an outdoor fan motor 32, a four-way valve 33, and other controlled objects.

Next, the operation of the present air conditioner during heating will be described with reference to the flowchart of FIG. 17 in addition to FIGS. In the following description, step numbers shown in FIG. 17 are written in parentheses. Run / stop button 2 on remote control 22
5 or the input of the preheat button 26 is performed by the remote controller control unit 22.
The light signal is transmitted from the light emitting unit 22b as an optical signal according to a predetermined rule by a, and is transmitted to the light receiving unit 80.

The control section 24 decodes the signal from the light receiving section 80, and checks whether or not the operation / stop button 25 or the preheat button 26 is input (S1). If there is no input, it is judged whether or not it is in the preheating mode, and if it is in the preheating mode, the process branches to (S2). If there is a signal from the light receiving unit 80 and the result of decoding the signal is the input of operation / stop, it is judged whether or not the operation is stopped (S3), and when the operation is not stopped, that is, when the operation is stopped. Shuts down the control target parts such as the compressor 31, the indoor fan motor 30, and the outdoor fan motor 32 (S4).

When the operation is stopped, it is judged whether or not the preheating operation is being performed (S5). When the preheating operation is being performed, the compressor 31 is OF
It is judged whether it is F (S6), and when it is OFF, the compressor 3
It is determined whether or not a stop time (OFF time) of 1 is a predetermined time 1, for example, a time (for example, about 3 minutes) during which the pressures between the high and low pressure portions of the refrigerant of the refrigeration cycle described above are substantially balanced ( S7). When the OFF time of the compressor 31 has not reached the predetermined time 1, the indoor fan 30 is instructed to rotate with a slight wind (such as S in the fan step), and the air is immediately blown to the pressure between the high and low pressure portions of the refrigeration cycle. Promotes balance (S8).

Next, the indoor heat exchange temperature is detected by the indoor heat exchange temperature detecting section 28, and the indoor heat exchange temperature is monitored until the indoor heat exchange temperature falls below a predetermined temperature 1 (S9). 33 is turned on and switched to balance the pressure between the high and low pressure parts of the refrigeration cycle (S10). By doing so, when the four-way valve 33 is switched while the pressure difference between the high and low pressure portions is large, it is possible to prevent the sound generated due to the sudden change in the flow of the refrigerant due to the high and low pressure difference. Next, the four-way valve 33 is turned off to bring it into a heating state (S12), and the outdoor fan motor 32, the compressor 31, and the indoor fan motor 30 are turned on to start heating operation (S1).
3 to S15). S5 of a series of heating operation start operations
If the result of the determination in S7 to S7 is NO, the normal heating operation start operation from S13 is performed.

Here, the OFF time of the compressor 31 is monitored as in S7, and it is determined by switching the four-way valve 33 whether or not the pressure between the high and low pressure portions of the refrigeration cycle should be balanced. It is possible to prevent useless switching of the four-way valve (steps S8 to S12). Further, as described in S10, since the four-way valve switching is performed according to the indoor heat exchange temperature, it is possible to prevent the noise generated when switching the four-way valve while the pressure difference between the high and low pressure portions of the refrigeration cycle is large.

Next, the operation when the operation button is the preheat button will be described with reference to steps S16 to S29. If the result of decoding the signal from the light receiving unit 80 is the input of preheating, it is first determined whether or not preheating is being performed (S16). If preheating is in progress, the preheating mode is turned off (S17). When not in preheating, the room temperature detector 27 detects the room temperature,
When the room temperature is equal to or higher than the predetermined temperature 2, the process branches to step S29 (S18). When the room temperature does not reach the predetermined temperature 2, the outdoor heat exchange temperature detection unit 29 detects the outdoor heat exchange temperature, and when the outdoor heat exchange temperature exceeds the predetermined temperature 3, step S2
It branches to 9 (S19). The outdoor heat exchange temperature is a predetermined temperature 3
In the following cases, it is determined whether or not the OFF time of the compressor 31 has exceeded the predetermined time 1, and when it does not reach the predetermined time 1, the process branches to step S29 (S20).

When the OFF time of the compressor 31 is equal to or longer than the predetermined time 1, the indoor heat exchange temperature is detected, and it is determined whether the indoor heat exchange temperature is equal to or lower than the predetermined temperature 4 (S21).
In the following cases, the outdoor fan motor 32 is turned on (S2
2), otherwise, the outdoor fan motor 32 is turned off (S23). In this way, since the outdoor fan motor 32 is controlled by the indoor heat exchange temperature, before the predetermined time 3 of compressor operation required for protection of the compressor 31 is reached,
Even when the indoor heat exchange temperature reaches the target temperature, that is, the predetermined time 4, the outdoor fan motor 32 is turned off, and the overload protection of the compressor 31 and power consumption can be suppressed. Further, when the outdoor fan motor has a speed of 2 speed or more, the outdoor fan motor can be made to operate at a high speed when the indoor heat exchange temperature takes too long to reach the predetermined time 4.

Next, the compressor 31 is turned on (S24),
The operations of S21 to S24 are performed until the predetermined time 3 required for protection of the compressor 31 is reached (S25). Further, the operations of S21 to S25 are performed until the indoor heat exchange temperature reaches the predetermined temperature 4 (S26). When Steps S25 and S26 are satisfied, that is, when the compressor 31 operates for a predetermined time 3 or more and the indoor heat exchange temperature reaches the predetermined temperature 4 or more, the compressor 31 and the outdoor fan motor 32 are turned off.
F, and preheating is interrupted (S27 and S28). next,
The preheating mode is turned on, and a series of preheating operations is completed (S2
9).

The operation of the air conditioner 23 realized by the above flow chart will be described with reference to the operation diagram of FIG. Range 1 shown in FIG. 14 shows a state in which the preheat operation is performed by the preheat button, but it can be seen that the indoor heat exchange temperature is maintained at the predetermined temperature or higher by the operation of the compressor.
The range 2 represents a case where the indoor heat exchange temperature reaches a predetermined temperature relatively quickly due to the operation of the compressor, but the outdoor fan motor is turned off and the indoor heat exchange temperature rises as shown by the broken line. It can be seen that the power saving is achieved along with the prevention of overload protection of the compressor.

Range 3 shows a state in which a heating operation command is received by the operation / stop button when the compressor is stopped during preheating operation, but the indoor fan motor is rotated and then the four-way valve is switched to change the high / low pressure of the refrigeration cycle. Since the pressure between the parts is balanced, the compressor can be started up smoothly without waiting for the pressure between the high and low pressure parts of the conventional refrigeration cycle to balance (the operation indicated by the broken line). It can be seen that the speed is faster than before (up until now, the rising edge is like a broken line). Range 4 shows the preheating operation when the outdoor heat exchange temperature or the room temperature is high. At this time, it can be seen that the compressor is not operated to save power.

[0056]

As described in detail above, the present invention has the following effects. (1) According to the first aspect of the invention, a compact indoor unit that can be installed in a narrow space such as between pillars of a living room, between a window and a ceiling, or on a curtain facility, and does not interfere with the air conditioning effect. The air conditioner can be provided.

(2) According to the second aspect of the invention, an air conditioner is provided which has good adhesion between the casing constituting the indoor unit of the air conditioner and the discharge frame, and which can be easily attached and detached. Can be provided.

(3) According to the third aspect of the present invention, it is possible to provide an air conditioner that is excellent in design and interior design and that has a light receiving filter capable of expanding the wireless reception range.

[Brief description of drawings]

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

FIG. 2 is a side sectional view showing an installed state of the indoor unit shown in FIG.

FIG. 3 is an explanatory diagram showing an example of installation positions of indoor units.

FIG. 4 is an explanatory diagram showing another example of the installation position of the indoor unit.

5 is a side view of the mounting example of FIG. 4. FIG.

FIG. 6 is a perspective view showing an external appearance of an indoor unit of an air conditioner according to an embodiment of the present invention.

7 is a partial view of a casing and a discharge frame that form a fitting portion of the indoor unit of FIG.

8 is an enlarged cross-sectional view of the fitting portion of FIG.

FIG. 9 is an enlarged cross-sectional view of a fitting portion between a casing and a discharge frame according to another embodiment of the present invention.

FIG. 10 is a partial view of a casing and a discharge frame forming a fitting portion of an indoor unit according to still another embodiment of the present invention.

11 is a perspective view showing an embodiment of a makeup piece forming a light receiving display section of the indoor unit of FIG.

FIG. 12 is a diagram showing the examination result of the light receiving working distance.

13 is a comparative explanatory diagram of the light receiving performance of the light receiving filter of FIG. 11 for each cross-sectional shape.

FIG. 14 is an operation diagram of the air conditioner according to the embodiment of the present invention.

FIG. 15 is a system diagram of a refrigeration cycle of an air conditioner according to an embodiment of the present invention.

FIG. 16 is a block diagram showing a control system of an air conditioner according to an embodiment of the present invention.

17 is a flowchart showing a control procedure of the control system of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 3 Casing 5 Discharge frame 6 Fitting part 6a, 6a 'Claw 7 Mating surface 8 Decorative piece 11, 14 Surface 12 Convex part 13, 13'17, 17' Recessed part 15, 15 'Claw tip part 16, 17a Notch portion 19, 21 Abutting surface 20 Discharge port 22 Remote control 80 Light receiving portion 82 Display portion 83 Light receiving surface 83a Light receiving back surface 84 Resin 86 Convex surface 87 Rough convex surface 89 Thin film 90 Light receiving element

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeaki Tezuka 709 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi 2 709, Hitachi Tochigi Electronics Co., Ltd. (72) Inventor Shoichi Ozodo Tomita 800, Ohira-cho, Shimotsuga-gun, Tochigi Address Hitachi Co., Ltd.Tochigi Plant (72) Inventor Atsushi Otsuka 800 Oita Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Address: Hitachi Ltd. Tochigi Plant (72) Inventor Hiroyuki Shono 800, Tomita, Ohira-machi, Shimotsuga-gun, Tochigi Prefecture Shares Hitachi, Ltd. Tochigi factory

Claims (9)

[Claims] 1. In an air conditioner having an indoor unit and an outdoor unit, a required opening size is provided in front of a position where a conditioned air outlet of the indoor unit exceeds a width dimension of a curtain rail from a rear surface of the indoor unit. An air conditioner characterized in that the depth dimension of the indoor unit is set so that 2. A casing, which constitutes an air conditioner, and a discharge frame provided at an upper portion of an outlet on a front surface of the casing are fitted with each other, and the casing and the discharge frame are provided with contact surfaces that are in close contact with each other. An air conditioner characterized in that a flexible claw is formed on one of the casing and the discharge frame, and a recess into which one end of the claw is fitted is provided on the other side. 3. A casing, which constitutes an air conditioner, and a discharge frame provided at an upper portion of an outlet on a front surface of the casing are fitted with each other, wherein the casing and the discharge frame are provided with contact surfaces that are in close contact with each other, The casing is provided with a claw portion whose tip portion faces downward, the discharge frame is provided with a first concave portion into which one end of the claw portion is fitted, and a second concave portion for alignment is provided near the claw portion of the casing. The air conditioner is provided with a convex portion that is fitted into the second concave portion in the vicinity of the first concave portion of the discharge frame. 4. The air conditioner according to claim 2, wherein the claw provided on the casing has a notch so that the claw can be bent in the elastic deformation in the front-rear direction. .. 5. The air conditioner according to claim 3, wherein a cutout portion having one surface with which the lower surface of the convex portion of the discharge frame can come into close contact is formed below the first concave portion of the casing. 6. A filter comprising a plate-shaped molded article molded of a transparent or translucent, milky-white resin, on the surface of which a thin film for selectively passing light rays of a specific wavelength is formed. A light receiving filter having a lens-shaped convex back surface and a rough back surface. 7. The display unit having an exposed surface of the material is provided separately from the light receiving surface so that the light of the light emitting body located on the back side of the plate-shaped molded article can be transmitted. Light receiving filter. 8. The resin forming the plate-shaped molded article is
8. The light receiving filter according to claim 6, wherein the resin contains a substance having an effect of diffusing light. 9. An air conditioner characterized in that the indoor unit is provided with the light-receiving filter according to any one of claims 6 to 8 so as to be able to receive a light beam of a specific wavelength from a light-emitting unit of a remote control unit. ..