JP2880491B1 - Ceiling-mounted air conditioner - Google Patents

Abstract

A ceiling-embedded air conditioner capable of easily confirming the elevating operation even when operating the elevating operation of a suction grill away from a unit main body of an air conditioner. A ceiling-embedded air conditioner equipped with a decorative panel (1) having a suction grill (2) at a lower part of the unit body and a unit body having a heat exchanger and a blower embedded in or suspended from the ceiling. , A suction grille 2 that can be moved up and down, a remote controller 3 connected to the unit main body 1, and a means 3 a that indicates on the remote controller 3 that the suction grill 2 is moving up and down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-ceiling type air conditioner which cools or heats a room and buries an indoor unit body under the ceiling, or a ceiling-hanging type air conditioner in which the unit is hung from the ceiling. In particular, the present invention is suitable for cleaning, checking, or replacing a filter or a suction grill through which cold or hot air blown into a room passes.

[0002]

2. Description of the Related Art In a ceiling-embedded air conditioner in which a decorative panel is attached to a lower portion of a unit body, a rotating drum is provided, and the other end of a wire having one end wound around the rotating drum is connected to a suction grill. It is known that the suction grill is supported so as to be able to move up and down, and the suction grill and a filter supported by the suction grill are moved up and down by driving a motor.
No., published in Japanese Patent Application Publication No.

Further, by operating a remote controller (remote controller) or the like, the wire wound around the rotating drum provided on the decorative panel is paid out, the suction grill is lowered to a predetermined position, and the filter or the suction grill is cleaned and inspected. Or exchange is known as described in the publication.

[0004]

However, if the suction grille which wants to move up and down from the position where the remote control is operated cannot be visually recognized due to the structure of the building or the relationship between the product shelf and the like,
In the above-mentioned prior art, the operator moves away from the remote controller during operation, moves to a position where the suction grille can be seen, checks the position, and repeats this operation until the suction grill is lowered to a position where it is easy to work. .

If the wire is lowered over a predetermined distance, for example, the length of the wire supporting the suction grill, or if the descent operation is continued for a predetermined time or more, the wire may be entangled. Furthermore, if the suction grille is not visible when the suction grille is stored, there is a problem that the suction grille must be temporarily moved to a visible position in order to check whether the suction grille is stored during the work.

Further, non-azeotropic mixed refrigerants, especially R407C
When a refrigerant is used, the pressure under the same temperature condition increases,
When the operation is performed under the same conditions as in the past, the operation is performed at a higher pressure than in the past. Accordingly, there is a problem that the operating pressure further increases due to the clogging of the suction grille, and the cooling / heating capacity decreases, the reliability, and the compressor life decreases.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to easily confirm the elevating operation of the suction grill even when operating the elevating operation of the suction grill away from the unit body of the air conditioner. Is to provide.

Another object of the present invention is to provide a ceiling-mounted air conditioner which is easy to maintain and does not operate at a high pressure even when a non-azeotropic refrigerant, particularly R407C refrigerant is used. . The present invention solves at least one of the above problems.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a unit grille having a heat exchanger and a blower embedded in a ceiling or suspended from the ceiling, and a suction grille provided in a lower portion of the unit body. In the ceiling-mounted type air conditioner provided with a decorative panel having: a suction grille that can be raised and lowered, a remote controller connected to the unit body, and a means for displaying on the remote controller that the suction grill is being raised and lowered It is provided with.

[0010] Thus, even when the suction grille is not directly visible from the position where the remote controller is operated, the lifting operation of the suction grille can be confirmed. Therefore, even when the filter mounted on the suction grille is frequently cleaned, the operator does not need to leave the remote controller, so that maintenance is facilitated.

Further, according to the present invention, in the above-mentioned apparatus, as means for indicating that the suction grill is moving up and down,
It is desirable to provide an operation display section of the suction grill, and to blink the operation display section while the suction grill is moving up and down.
Further, in the above-mentioned invention, it is desirable that the descent distance of the suction grill is displayed as a means for indicating that the suction grill is moving up and down.

Further, the present invention relates to a ceiling-embedded unit having a decorative panel having a suction grill at a lower part of the unit body, wherein the unit body having a heat exchanger and a blower is buried in or suspended from the ceiling. Type air conditioner,
The suction grille, which can be moved up and down, a remote controller connected to the unit main body, and a plurality of display portions indicating suction grilles corresponding to a plurality of lowering positions of the suction grille. Are sequentially turned on and off from top to bottom, and when raising the suction grille, the display units indicating the suction grille are turned on and off sequentially from bottom to top. Thereby, the elevating operation of the suction grill is displayed as a moving image and the operation is simulated, so that not only the elevating operation but also the descent position can be known, so that the workability is further improved.

Further, the present invention provides a ceiling-embedded type having a decorative panel having a suction grill at a lower part of the unit body, wherein the unit body having a heat exchanger and a blower is embedded in or suspended from the ceiling. An air conditioner is provided with a suction grille that can be moved up and down, and raises the suction grill when the suction grill moves down a predetermined distance or for a predetermined time. With this, even if you neglect to check the descent operation of the suction grill and continue to instruct the descent,
For example, it is possible to prevent malfunction due to the suction grill arriving at the floor.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a state in which a suction grill of an embedded ceiling air conditioner according to an embodiment is lowered and an interior of the room, and FIG. 2 is a remote controller showing a state in which characters of up and down according to one embodiment are blinking. FIG. 3 is a front view showing a display unit of a remote controller displaying moving up and down operations according to another embodiment in a moving image, and FIG. 4 shows a descent distance of a suction grill according to still another embodiment. It is a front view showing the display of a remote control.

In FIG. 1, reference numeral 1 denotes a decorative panel of an indoor unit of a ceiling-mounted air conditioner. A heat exchanger, a drain pan, a blower, a fan, and a fan motor (not shown) are arranged inside the unit main body, and a decorative panel 1 is mounted below the unit so as to cover the opening.

In the center of the decorative panel 1, a suction grill 2 is supported by a wire 4 having one end wound around a rotating drum (not shown). A filter 5 is mounted on the upper part of the suction grill 2 so as to be detachable.

In order to stabilize the air conditioning performance of the air conditioner,
The filter 5 needs to be cleaned frequently. Therefore, it is necessary to make it possible for the suction grill 2 to be lowered by the lifting mechanism of the suction grill 2 to facilitate maintenance such as cleaning and replacement.

Further, as a refrigerant flowing through the heat exchanger,
When a non-azeotropic mixed refrigerant, particularly R407C, is used, the pressure under the same temperature condition becomes higher, and when the operation under the same condition as the conventional (refrigerant R22) is performed, the operation is performed at a higher pressure than the conventional one. Therefore, the operating pressure increases due to the clogging of the suction grill, and the cooling / heating capacity decreases, the reliability and the life of the compressor decrease. Therefore, it is necessary to perform cleaning and replacement more frequently.

As shown in FIG. 1, even when the suction grill 2 cannot be visually checked from the position where the operator operates the remote controller 3, the operator confirms the elevating operation without leaving the remote controller 3 during operation. In order to lower the suction grill 2 to an arbitrary position and perform the cleaning work, the characters of the up / down operation displayed on the remote controller 3 blink, a moving image display of the up / down operation, the descent distance of the intake grill, and the like are displayed.

Also, if the operator attempts to lower the suction grill 2 by more than the length of the wire 4 supporting the suction grill 2, if the operator lowers the suction grill 2 by a predetermined distance or a predetermined time, the rotating drum reverses, The suction grill 2 is raised. Therefore, the suction grill 2 does not reach the floor surface, and the wire 4 is not unnecessarily fed out or entangled.

After the suction grill 2 reaches an arbitrary position, the filter 5 can be removed from the suction grill 2 and cleaned or washed. Further, since the suction grill 2 is also detachable from the wire 4, it can be cleaned or washed. After the filter 5 is cleaned, it is installed on the suction grill 2 again, and the remote control 3 is operated to reverse the rotating drum.
The wire 4 is wound up, the suction grill 2 is raised, and a micro switch or the like attached to the decorative panel 1 (not shown)
, The suction grill 2 is raised until it is stored in a predetermined position of the decorative panel 1.

When the operator attempts to raise the wire 4 further, the blinking display indicating that the remote controller 3 is moving up and down is changed to merely light up, and the rotating drum for winding up the wire 4 is also stopped.

FIG. 2 shows an embodiment in which the character 3a for ascending and descending is displayed on the display section of the remote controller 3 during the ascending and descending operation and blinks. Indicates that the character 3a for ascending and descending is turned on. Thereby, it is possible to easily grasp whether or not the elevating operation is performed.

FIG. 3 shows an embodiment in which the elevating operation is shown on the display section of the remote controller 3 as a moving image 3b during the elevating operation. The display unit of the remote controller 3 is provided with a plurality of display units that indicate the suction grille as shown in 3b according to the plurality of lowered positions of the suction grille 2. The moving image means that when the suction grill 2 is lowered, the plurality of display units are sequentially turned on and off from top to bottom, and when the suction grill 2 is raised, the plurality of display units are sequentially turned on and off from bottom to top. Suction grill 2
Is displayed as if it were moving.

By showing the moving image, it is easy to see at a glance whether the vehicle is currently ascending or descending, and not only whether the vehicle is moving up and down but also the descending position is known, so that the workability is further improved.

FIG. 3 is provided with a display showing the model of the indoor unit, and a plurality of linear grills are provided below the indoor unit.
Is displayed. It is desirable that the lighting be repeated at a fixed cycle from top to bottom when the suction grille 2 descends, and be repeated at a fixed cycle from bottom to top when raised.

FIG. 4 is an embodiment showing an example in which a display unit 3c for indicating the descent distance of the suction grill 2 is provided on the display unit of the remote controller 3 during the elevating operation. The descending distance is sequentially changed according to the descending and rising positions of the suction grill 2.

As described above, since the suction grill 2 can be moved up and down safely and accurately and the filter 5 can be kept clean at all times, it is advantageous in terms of hygiene and there is no increase in flow path resistance due to clogging of the filter 5 and the like. In addition, since the air conditioning performance is stabilized, it can be advantageous for energy saving.

[0029]

As described above, according to the present invention, the suction grill can be raised and lowered and the remote control indicates that the suction grill is being raised and lowered, so that the suction grill cannot be directly viewed from the position where the remote control is operated. Even in this case, the lifting operation of the suction grill can be confirmed. Therefore, maintenance is easy even when the filter is frequently cleaned.

Further, according to the present invention, a plurality of displays are provided corresponding to a plurality of lowering positions of the suction grill, and when the suction grill is lowered, the plurality of displays are turned on and off sequentially from top to bottom. When raising, the plurality of display units are sequentially turned on and off from the bottom to the top, so that the elevating operation of the suction grill is simulated. Therefore, the workability can be further improved because the position of the descent as well as the descent is known.

Further, according to the present invention, the suction grill is raised when the suction grill is lowered for a predetermined distance or for a predetermined time. Therefore, even if the user does not check the descent operation of the suction grill and continues to instruct the descent, the malfunction may occur. Can be prevented.

As described above, it is possible to obtain a ceiling-mounted air conditioner that can easily confirm the elevating operation even when the elevating operation of the suction grill is operated away from the unit main body. Further, since maintenance is easy, it is possible to obtain a ceiling-mounted air conditioner that does not operate at a high pressure even when a non-azeotropic mixed refrigerant, particularly R407C refrigerant is used.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a suction grill of an embedded ceiling air conditioner according to an embodiment is lowered, and the inside thereof.

FIG. 2 is an exemplary front view showing a display unit of the remote controller in a state where characters of up and down according to the embodiment are blinking;

FIG. 3 is a front view showing a display unit of a remote controller that displays a lifting operation according to another embodiment in a moving image.

FIG. 4 is a front view showing a display unit of a remote controller displaying a descent distance of a suction grille according to still another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Makeup panel, 2 ... Suction grill, 3 ... Remote control, 3a ... Display part which blinks the character of raising / lowering, 3b ... Display part which displays a raising / lowering operation | movement in animation, 3c. .. A display unit for indicating the descent distance of the suction grille, 4... Wires, 5.

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yoshiki Hata 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Hitachi, Ltd. Air Conditioning Systems Division (72) Inventor Toshinori Fukazawa 390 Muramatsu, Shimizu-shi, Shizuoka Hitachi Shimizu Engineering Co., Ltd. (72) Inventor Koichi Tokushige 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Air Conditioning Systems Division, Hitachi, Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) F24F 11/02

Claims (5)

(57) [Claims] 1. A ceiling-embedded air conditioner having a unit body having a heat exchanger and a blower buried in or suspended from a ceiling, and having a decorative panel having a suction grill at a lower portion of the unit body. 5. The ceiling-mounted device according to claim 1, further comprising: the suction grille, which can be moved up and down, a remote controller connected to the unit main body, and means for displaying on the remote controller that the suction grill is moving up and down. Type air conditioner. 2. The ceiling-mounted device according to claim 1, wherein an operation display section of the suction grill is provided on the remote controller, and the operation display section blinks while the suction grill is moving up and down. Type air conditioner. 3. The air conditioner according to claim 1, wherein a descent distance of the suction grill is displayed on the remote controller. 4. A ceiling-embedded air conditioner having a unit body having a heat exchanger and a blower embedded in or suspended from a ceiling, and a decorative panel having a suction grill at a lower portion of the unit body. In the above, it is provided with the suction grill which can be moved up and down, a remote controller connected to the unit main body, and a plurality of display portions indicating the suction grill corresponding to a plurality of lowered positions of the suction grill. When lowering, the plurality of display units indicating the suction grille are sequentially turned on and off from top to bottom, and when raising the suction grille, the plurality of display units indicating the suction grille are sequentially turned on and off from bottom to top. A ceiling-mounted air conditioner characterized by being made to work. 5. A ceiling-embedded air conditioner having a unit body having a heat exchanger and a blower embedded in a ceiling or suspended from the ceiling, and having a decorative panel having a suction grill at a lower portion of the unit body. The air conditioner according to any one of claims 1 to 3, further comprising the suction grille that can be moved up and down, wherein the suction grill is moved up when the suction grille moves down a predetermined distance or a predetermined time.