JP2001193958A - Indoor machine of air-conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce costs, time, or the like for producing a mold by enabling cabinet dimensions to be changed. SOLUTION: A cabinet 1 where the components of an indoor machine are subjected to interior finishing is set to separate structure that is composed by a three-piece resin forming member of three pieces of a split motor side injection molding part 2, a cross flow fan shaft side injection molding part 3, and a central casing part 4 that can be combined with both of them 2 and 3, the central casing part 4 is formed by extrusion molding, and the casing parts 4 with different dimensions are combined according to a model, thus manufacturing the cabinet 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation type air conditioner comprising an indoor unit and an outdoor unit, and more particularly to an indoor unit of an air conditioner having an improved cabinet structure of the indoor unit. .

[0002]

2. Description of the Related Art In general, an indoor unit of this type of a separation type air conditioner includes an evaporator as an indoor heat exchanger, a cross flow fan for sucking indoor air and blowing cooling air into a room, and a fan for the cross flow. A driving fan motor, a drain pan for receiving dew condensation, a control electrical box, and the like were installed in a cabinet as an assembly base, and the front open surface of the cabinet was covered with a front panel having an air inlet and an air outlet. It has a configuration.

The above-mentioned cabinets have different design specifications depending on the type of air conditioner, and have different lengths and the like depending on the size of the capacity. Conventionally, for example, as shown in FIG. Shaft support 2
6. Mounting part 27 for electrical box, mounting part 2 for front panel
Since it is composed of a synthetic resin injection-molded product integrally formed with 8 and the like, each time a new model is developed, it is necessary to newly design a molding die of the cabinet 1.

[0004]

However, in the case of such a cabinet 1 manufactured by the conventional injection molding method, a high mold manufacturing cost is required every time a product is developed, and since the cabinet 1 is an integrally molded product, the metal mold is expensive. It is unavoidable that the mold shape becomes complicated, and it takes a lot of time to create a design drawing. In addition, if it is necessary to change the dimensions of the cabinet at the trial production stage, for example, at the time of the examination of the air volume, etc., the trial production time and the cost required for the trial production will be added, and the product development cost will be even higher. There was a problem of getting on.

In addition, in the case of injection molding, since the size error of the molded product with respect to the design size increases as the size increases, the cabinet size that can be manufactured is naturally limited. In the case of the cabinet 1 used for a large model, It takes time and money to study a prototype for adjusting the fitting with other parts.

Further, in a state where the indoor unit is mounted on the wall surface, there is a possibility that dew may be formed when a temperature difference occurs before and after the central casing portion of the cabinet 1. In order to prevent such dew formation, In addition, a heat insulating material must be attached to the back surface of the central casing portion of the injection molded cabinet 1, which requires extra labor.

Further, as means for fixing to the wall surface of the indoor unit, a separately prepared mounting plate is fixed to the wall surface, and a hook integrally formed on the back side of the cabinet 1 is pulled to the mounting plate. Just by hanging, the indoor unit is fixed, but according to such conventional fixing means,
Since only the upper part of the indoor unit is supported and the lower part is a free end, there is also a problem that rattling occurs during operation.

According to the present invention, there is provided a structure in which a central casing portion of a cabinet is formed not by injection molding but by extrusion molding, and a motor side injection mold portion on both sides thereof and a cross flow fan shaft side injection molding portion are connected. Accordingly, it is an object of the present invention to provide an indoor unit of an air conditioner that solves the above-mentioned conventional problems.

[0009]

In order to achieve the above object, according to the present invention, there is provided a cabinet in which components of an indoor unit are installed, and this cabinet can be connected to a central casing portion and the central casing portion. In addition, a separate structure is formed by three resin molded members on both sides of the cabinet part, and the central casing part is formed by extrusion molding, and the cabinet parts on both sides are formed by injection molding.

In the above configuration, it is preferable to add the following configuration. First, on the back side of the casing part, a hook part to the installation plate is integrally formed, and the front and rear wall parts constituting the hook part are formed in a hollow shape. Secondly, a double wall portion is formed in the casing portion, and an opening on both sides of the double wall portion is sealed by left and right cabinet portions, thereby forming an air sealing layer therein.

Third, a flat wedge-shaped member which is formed integrally with a horizontal gutter-shaped back drain portion which is long on the left and right sides on the back side of the casing portion, and whose upper surface is an inclined surface which is inclined in a single flow in the left-right direction. Into the back drain section.

Fourthly, a groove having a groove width smaller than the diameter of a tapping screw having a predetermined dimension and opening to the front side of the casing portion is integrally formed on the front side of the casing portion to form an open front surface of the cabinet. The front panel is attached to the front of the cabinet by inserting the tapping screw into the front panel mounted on the cabinet and screwing the tapping screw into the groove.

Fifth, a pipe member storage space capable of collecting and storing a pipe and a drain hose is integrally formed on the back side of the casing.

Sixth, a groove having a groove width smaller than the diameter of a tapping screw having a predetermined dimension and being open to the lower surface side of the casing portion is integrally formed on the lower surface side of the casing portion, and the mounting plate is provided with the groove. The lower surface of the cabinet is fixedly supported on the mounting plate by inserting the tapping screw and screwing the tapping screw into the groove.

[0015] As described above, the cabinet part is constituted by three-part separate parts, and the central casing part of the three-part cabinet is formed by extrusion molding. Even in the middle, it is possible to respond to indoor units of different models simply by replacing the dimensions of the central casing part with those that have been changed to match the design dimensions, and it is not necessary to newly manufacture molds with different dimensions .

In the case where the hook is formed on the rear side of the casing, the hook is formed by extrusion molding.
It is formed in a groove shape extending in the length direction of the casing portion. Therefore, with the casing hooked on the mounting plate,
Since the cabinet can be slid in the left-right length direction, fine adjustment of the hooked cabinet in the left-right direction can be easily performed even when the mounting plate is fixed to the wall. Further, by forming the front and rear wall portions of the hook portion to have a hollow structure, the strength of the hook portion is improved.

In the case where a double wall portion is provided in a casing portion and an air encapsulation layer is formed in the double wall portion in an assembled state of a cabinet, when the temperature difference between the front and rear of the casing portion is large due to the heat insulating effect of the air encapsulation layer. The dew condensation which may occur in the above is prevented. This also eliminates the need for attaching the dew condensation preventing heat insulating material to the casing.

In the case where a back drain portion is integrally formed on the back side of the casing portion and a wedge-shaped member is inserted therein, when water condenses on the back surface of the casing portion and water drops, the condensed water is drained. The liquid flows partially on the wedge-shaped member and is guided to the drain pan, so that dripping to the outside of the machine is prevented.

In the case where the front panel is attached using the groove provided on the front side of the casing portion instead of the screw hole, the groove is formed in the length direction of the casing portion by extrusion. Therefore, the fixing position of the screw when the front panel is fixed has flexibility in the left-right direction, and the mounting adjustment can be easily performed.

In the case where the pipe member storage space is integrally formed on the rear side of the casing, the pipe and the hose group are neatly collected by storing the pipe and the drain hose in a bundled state in the space, Conventionally required pipe holding parts can be eliminated.

In the one in which the groove provided on the lower surface side of the casing part is used as a screw hole so that the mounting plate and the cabinet can be connected, not only the upper part of the cabinet is hooked on the mounting plate, but also the lower part is screwed. , The rattling of the indoor unit during operation can be suppressed. Also,
Since it is not a screw hole but a groove, the screwing position has flexibility in the left-right direction, so that the adjustment of the mounting position on the mounting plate of the cabinet is simplified.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. Although not shown, the indoor unit of the separation type air conditioner according to the present embodiment includes an evaporator as an indoor heat exchanger, a cross flow fan that sucks indoor air and blows cooling air into the room, and a fan. A configuration in which a driving fan motor, a drain pan for receiving dewed water droplets, an electrical control box, and the like are installed in a cabinet as an assembly base, and a front open surface of the cabinet is covered with a front panel having an air inlet and an air outlet. It has.

FIG. 1 is an exploded view of the cabinet. As shown in this figure, the cabinet 1 has a separate structure which is divided into three parts in the longitudinal direction, a motor side injection molding part 2 as a right cabinet part, and a cross flow fan shaft side injection molding as a left cabinet part. It comprises a part 3 and a central casing part 4.

The casing portion 4 has a shape corresponding to the shape of the injection molding portions 2 and 3 on both sides thereof, and guides the intake air flow of the room air and the heat exchanged cooling air flow. A central recessed wall portion 5 for accommodating the evaporator and the cross flow fan, and a hook-shaped hook portion 6a extending substantially horizontally rearward from an upper end portion of the recessed wall portion 5
And, extending substantially horizontally rearward from the lower end of the recessed wall portion 5,
In addition, the bottom wall portion 7 having a substantially symmetric shape with the hook portion 6a is formed in a series. Unlike the injection molded members 2 and 3 on both sides, the casing portion 4 is made by extrusion molding, so that the casing portion 4 can be formed into an arbitrary length corresponding to the type of the air conditioner.

The motor-side injection molding section 2 and the cross-flow fan shaft-side injection molding section 3 are configured such that their ends facing the casing section 4 are fitted to the left and right end surfaces of the casing section 4, respectively. Reference numeral 6b denotes a hook provided on the rear side of the recessed wall 5 of the casing 4.

In the cabinet 1 having such a configuration, since a molded product obtained by extrusion molding is used for the central casing portion 4, for example, when used in a small model, as shown in FIG. The short casing part 2 is connected to the left and right injection molding parts 2 and 3, and when it is used for a larger model, as shown in FIG. The cabinet 1 corresponding to the indoor unit having the dimensions can be obtained. In addition,
2 and 3, the casing 4 is indicated by hatching.

FIG. 4 shows an enlarged cross section of the casing part 4, and FIG. 5 shows a state where the casing part 4 is attached to a wall surface. As shown in FIG. 5, the casing 4 of the cabinet 1 is fixedly supported by a mounting plate 9 fixed to a wall surface 8. That is, the mounting plate 9 extends the L-shaped hooking piece 9b from the upper end of the vertical plate portion 9a fixed in a state of being attached to the wall surface 8, and makes the lower end portion of the vertical plate portion 9a L-shaped. The hook 9c is formed by cutting and raising the upper hook 9b.
The casing 4 is fixedly supported on the mounting plate 9 by engaging the upper hook 6a of the casing 4 with the lower hook 6b and the lower hook 9c.

As described above, since each of the hooks 6a and 6b is integrally formed with the casing 4 made of an extruded product, a groove extending horizontally in the longitudinal direction of the casing 4 is formed. It has become. Therefore, in a state where the cabinet 1 is hooked and fixed on the installation plate 9, the cabinet 1 can be slid left and right while the cabinet 1 is hooked on the installation plate 9. That is, even when the mounting plate 9 is already fixed to the wall surface 8, fine adjustment in the left-right direction of the hooked cabinet 1 can be easily performed.
The front and rear wall portions 4a and 4b on both sides of the upper hooking portion 6a are each formed in a hollow shape.
The strength of a is improved.

FIG. 6 shows a first modification of the casing unit 4. In the casing part 4 shown in this figure, the central concave wall part 5 is formed as a double wall, and when the casing part 4 and the left and right injection molded parts 2 and 3 are connected, both sides of the double wall part 5 are formed. The opening is sealed by the left and right injection molded parts 2 and 3, and an air encapsulation layer 10 is formed therein.
Reference numeral 5a denotes a reinforcing rib integrally formed with a space between the front and rear wall portions of the double wall 5.

As described above, if the casing portion 4 is formed as a double hollow extruded product, when the cabinet 1 is assembled, the air encapsulating layer 10 formed inside the double wall 5 has a heat insulating effect. In addition, it is possible to effectively prevent dew condensation which may occur when the temperature difference between the front and rear of the casing portion 4 is large. In addition, it is also possible to eliminate the heat insulating material that needs to be attached to prevent dew condensation.

FIGS. 7 and 8 show a second modification of the casing 4. In the casing part 4 shown in these figures, a horizontal gutter-shaped back drain part 11 long to the left and right is integrally formed on the back side of the recessed wall part 5, and a flat wedge-shaped member is formed on the bottom surface of the back drain part 11. 12 is inserted. The wedge-shaped member 12 is formed on an inclined surface such that the upper surface is inclined in a single flow in the left-right direction.

As described above, the casing 4 is connected to the back drain 1
1, when the dew forms on the back surface of the casing part 4, the condensed dew water flows down the upper surface of the wedge-shaped member 12 inserted into the back drain part 11 and is located below the same. To the drain pan.

FIG. 9 and FIG. 10 show a third modification of the casing part 4. The casing part 4 shown in these figures
In this example, a groove 13 opening to the front side is integrally formed at the lower end. This groove 13 has a groove width smaller than the diameter of the tapping screw 15 for attaching the front panel 14, and when the front panel 14 is mounted on the front of the cabinet 1, the screw insertion provided on the front panel 14 is inserted. Hole 16
And the tapping screw 15 is screwed into the groove 13.

In the case where the casing portion 4 is formed by an extruded product having the groove 13 at the lower end on the front side, the groove 13 can be used as a screw fastening portion when the front panel 14 is fixed. In this case, tapping screw 15
Into the groove 13 so that the tapping screw 15
Is fixed in a state of being cut into the casing part 4 which is a molded product, so that the front panel 14 is securely attached to the cabinet 1 firmly. In addition, since the groove is used instead of the screw hole, the fastening position of the screw is free in the left-right direction, so that fine adjustment at the time of attachment can be easily performed.

FIGS. 11 and 12 show the fourth portion of the casing 4.
Are shown. In the casing part 4 shown in these figures, a pipe member housing space 17 is integrally formed on the back side. That is, in the casing portion 4, the bottom wall portion 7 is extended rearward, and the vertical wall portions 18 a and 18 b are respectively extended from the rear end of the bottom wall portion 7 and the back surface of the recessed wall portion 5. A portion surrounded by the vertical wall portions 18a, 18b, the bottom wall portion 7, and the recessed wall portion 5 constitutes a conduit member storage space portion 17, and a space between opposing ends of the vertical wall portions 18a, 18b. The pipe member accommodating through groove 19 is formed.

The pipe member accommodating space 17 is provided with piping pipes 20 and 21 having heat insulating material wound therearound and the drain hose 2.
2 has an area that can be collected and stored. Further, the groove width of the pipe member housing through groove 19 is determined by the width of the pipe 2.
The pipe and the hose group are formed to be larger than any of the diameters of the pipes 0 and 21 and the drain hose 22, and the pipes and hoses are accommodated in the pipe member storage space 17 from the pipe member storage through groove 19 and stored well.

As described above, in the case where the casing portion 4 is constituted by an extruded product having the space portion 17 at the lower end portion,
Since the pipes 20, 21 and the drain pan 22 can be bundled in the pipe member storage space 17, the pipe retainer, which is conventionally an essential part, can be eliminated.

FIG. 13 and FIG.
Are shown. In the casing part 4 shown in these figures, a groove 23 that is opened on the lower surface side of the bottom wall part 7 is integrally formed. The groove 23 has a groove width smaller than the diameter of the tapping screw 24 for connecting the casing part 4 to the mounting plate 9. On the other hand, unlike the one shown in FIG. 5, the mounting plate 9 is formed in a U-shaped cross section extending to the bottom wall portion 7, and a screw insertion hole 25 is formed in the lower horizontal plate portion 9d. In this case, since the lower hook 6b is not required, it is not formed.

In such a configuration, the casing 4
When the is attached to the mounting plate 9, the tapping screw 24 is inserted into the screw insertion hole 25 of the mounting plate 9 after the upper hook 6 a of the casing portion 4 is engaged with the hook piece 9 b of the mounting plate 9. At the same time, the tapping screw 24 is screwed into the groove 23.

In the case where the casing portion 4 is formed of an extruded product having the groove 23 at the lower end as described above, the groove width is smaller than the diameter of the tapping screw 24. Bites into the casing 4 and is fixed. In this mounting state, the upper end of the casing portion 4 is hooked and engaged, and the lower end is fixed by the screw 24, so that the rattling of the indoor unit during operation can be suppressed. Further, since the screw 24 is screwed by the groove 23 unlike the screw hole, the screw fixing position is free in the left-right direction, so that fine adjustment at the time of mounting can be easily performed.

[0041]

As described above, according to the present invention, the cabinet has a separate structure in which the cabinet is divided into three parts, and the central casing part is formed by extrusion molding, and the cabinet parts on both sides are formed by injection molding. The size of the cabinet can be changed relatively easily, and it is not necessary to manufacture a new mold, so that the cost and time required for the manufacture of the mold can be greatly reduced, and a mold design drawing can be created. Can be reduced.

Further, it is possible to easily cope with a dimensional change in a prototype stage. In this case, since only the left and right dimensions of the product are changed, the air volume and the like of the indoor unit can be estimated by proportional calculation from the product dimensions. Therefore,
It is possible to reduce the time for studying prototypes. In addition, since the casing is formed by extrusion, there is an advantage that dimensional errors hardly occur even when the size of the product is increased.

Further, according to the present invention, since the hook on the mounting plate is also formed by extrusion, fine adjustment of the cabinet in the left and right direction is possible while the cabinet is hooked on the mounting plate. Becomes In addition, since the side walls of the hook portion have a hollow structure, the strength can be improved.

Further, according to the present invention, since a double wall portion is formed in the casing portion and both ends of the double wall portion are sealed to form an air sealing layer inside the double wall portion, Dew condensation on the front side of the casing can be prevented as much as possible by the heat insulating effect of the enclosing layer. In addition, the conventionally required heat insulating material for preventing dew condensation can be eliminated.

Furthermore, according to the present invention, since the back drain is integrally formed on the back side of the casing and the wedge-shaped member is inserted therein, the water droplets that have condensed on the back side of the casing are caused to flow in one direction. As a result, the water can be guided to the drain pan, and the condensation water can be prevented from dripping from the indoor unit to the outside.

In addition, according to the present invention, a groove is integrally formed on the front side of the casing portion, and a tapping screw is screwed into the groove to attach the front panel. Therefore, since the screw fastening portion for fixing the front panel is a groove formed by extrusion molding, the screw fastening position is free in the left-right direction, and mounting adjustment can be easily performed.

Further, according to the present invention, since the pipe member storage space is integrally formed on the rear side of the casing, the pipe pipe and the drain hose are collected and stored in this space, so that the rear of the casing can be stored. And the installation work on the installation plate can be done smoothly.
Also, the pipe retainer, which is one of the parts conventionally required, can be eliminated.

Further, according to the present invention, a groove is integrally formed on the lower surface side of the casing portion, and a tapping screw is screwed into the groove so that the lower surface of the cabinet is fixedly supported on the mounting plate. Therefore, when the screw is fixed to the mounting plate, the fixing position of the screw is free in the left-right direction, and the mounting adjustment can be easily performed. In addition, since the indoor unit is fixed firmly by the screw, the rattling of the indoor unit during operation can be reduced as compared with the case where only the hook is used.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a cabinet in an embodiment of the present invention.

FIG. 2 is a schematic front view showing a cabinet corresponding to a small indoor unit.

FIG. 3 is a schematic front view showing a cabinet corresponding to a large indoor unit.

FIG. 4 is a vertical sectional side view showing a casing portion.

FIG. 5 is a vertical side view showing a state where the casing is attached to a wall surface.

FIG. 6 is a longitudinal sectional side view showing a first modification of the casing part.

FIG. 7 is a longitudinal sectional side view showing a second modification of the casing unit.

FIG. 8 is a perspective view thereof.

FIG. 9 is a longitudinal sectional side view showing a third modification of the casing part.

FIG. 10 is an enlarged sectional view of a main part thereof.

FIG. 11 is a longitudinal sectional side view showing a fourth modification of the casing part.

FIG. 12 is an enlarged sectional view of a main part thereof.

FIG. 13 is a longitudinal sectional side view showing a fifth modification of the casing part.

FIG. 14 is an enlarged sectional view of a main part thereof.

FIG. 15 is a perspective view showing a cabinet in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet 2 Injection molding part at motor side 3 Injection molding part at cross flow fan shaft side 4 Casing part 4a Front wall part 4b Rear wall part 5 Recessed wall part 6a Upper hook part 9 Mounting plate 10 Air sealing layer 11 Back drain part 12 Wedge shape Member 13 Groove 14 Front panel 15 Tapping screw 17 Pipe member storage space 20 Piping pipe 21 Piping pipe 22 Drain hose 23 Groove 24 Tapping screw

Claims (7)

[Claims] 1. A cabinet in which components of an indoor unit are provided. The cabinet is composed of a central casing portion and three resin molding members on both sides of the cabinet portion that can be connected to the central casing portion. An indoor unit for an air conditioner, wherein the separated casing has a separated structure, the central casing is formed by extrusion molding, and the cabinets on both sides are formed by injection molding. 2. The casing according to claim 1, wherein a hook portion to the mounting plate is integrally formed on a back side of the casing portion made of the extruded product, and front and rear wall portions constituting the hook portion are formed in a hollow shape. Indoor unit of air conditioner. 3. A double-walled portion is formed in a casing portion formed of an extruded product, and both side openings of the double-walled portion are sealed by left and right cabinet portions, and an air sealing layer is formed therein. The indoor unit of an air conditioner according to claim 1 or 2, wherein the indoor unit is configured to be formed. 4. A horizontal gutter-shaped back drain portion which is long in the left and right direction is integrally formed on the back side of a casing portion formed of an extruded product, and the upper surface is an inclined surface which is inclined in a single flow in the left and right direction. The indoor unit for an air conditioner according to any one of claims 1 to 3, wherein a flat wedge-shaped member is inserted into the back drain portion. 5. A cabinet having a groove width smaller than the diameter of a tapping screw having a predetermined size and having a groove opening to the front side of the casing section is integrally formed on the front side of the casing section made of an extruded product, and is formed integrally with the casing section. The front panel is configured to be attached to the front surface of the cabinet by inserting the tapping screw into a front panel mounted on an open front and screwing the tapping screw into the groove. 4. An indoor unit of the air conditioner of any one of 4. 6. A pipe member storage space that can collectively store a pipe pipe and a drain hose is formed integrally with a back side of a casing part formed of an extruded product.
5. The indoor unit of any of the air conditioners of item 5. 7. A mounting plate having a groove width smaller than a diameter of a tapping screw having a predetermined dimension and opening to a lower surface side of the casing portion is integrally formed on a lower surface side of a casing portion formed of an extruded product. By inserting the tapping screw through, and screwing the tapping screw into the groove,
The indoor unit of an air conditioner according to any one of claims 1 to 6, wherein a lower surface of a cabinet is fixedly supported by the installation plate.