CN1108377A - Indoor unit of air conditioner - Google Patents

Abstract

The indoor unit of the air conditioner, its unit body 20 is made up of the assembly body of front panel 21 and rear panel 22, and this unit body interior accommodates and arranges heat exchanger 56 and air blower 50, by setting on above-mentioned front panel together with above-mentioned rear panel The air passage constituting portion 30 forming the air outlet air passage 29 is integrally connected with a pipe storage cover 31 for shielding auxiliary pipes 32 and the like connected to the above-mentioned heat exchanger, thereby providing a The indoor unit of the air conditioner that facilitates the piping connection work during the installation of the unit body and improves the installation work conditions.

Description

The present invention relates to an indoor unit of an air conditioner, and more particularly to an improvement of the unit body.

Generally used air conditioners are composed of an indoor unit installed in an air-conditioning room and an outdoor unit installed outdoors through refrigerant piping or the like. The unit body of the above-mentioned indoor unit is mostly installed and fixed on the wall of the air-conditioned room.

Fig. 7 is a schematic longitudinal sectional view of an existing indoor unit. As shown in Fig. 7, the unit body 3 is composed of a front panel 1 and a rear panel 2, and a heat exchanger 4 and a blower are arranged inside the unit body 3. 5.

The recent trend is that, as shown in FIG. 7 , the above-mentioned heat exchanger 4 is divided into a plurality and surrounds the above-mentioned air blower 5 composed of a circulation fan, but the rear plate 2 side of the air blower 5 has no heat exchanger 4 . That is, the heat exchangers 4 face each other in a bent state along the front and upper portions of the front panel 1 .

On the front panel facing the heat exchanger 4, air inlets (not shown) are provided on the front and upper sides thereof, and air outlets 6 for air-conditioned air are provided on the lower front side.

The rear plate 2 has a curved portion 2a formed along the shape of the air blower 5, and an air outlet air passage 7 communicating with the air outlet 6 is formed on the lower side thereof. The lowermost end thereof is bent backward, and pipes are accommodated in the pipe housing portion 8 on the back side.

There are many problems in the operation of the existing air conditioner with the above structure, especially when the indoor unit is installed and maintained.

That is, when the indoor unit is installed, the auxiliary piping 9 extending from the unit body generally extends from the right side of the unit body 3 and is connected to the external piping connected to the outdoor unit. Due to the influence of the wall surface, the left side has to be connected to the external piping.

When taking out from the right side (right piping), store the auxiliary piping 9 in the piping container 8 formed at the lower end of the rear plate 2, install the unit body 3, and then remove the auxiliary piping protruding from the right side. Just connect the tip to the external piping. However, when taking out on the left side (left piping), since the top end of the auxiliary piping 9 is located on the back side of the unit body 3, the connection work between the auxiliary piping 9 and the external piping must be performed on the back side of the unit body 3.

Therefore, when carrying out the connection operation, the upper part of the unit body 3 has to be hung on the mounting plate 10 first, and then the unit body 3 is rotated and lifted from the wall surface to form a gap with the upper part of the unit body 3 being hung. , put your hand into the gap for connection work.

As mentioned above, when the auxiliary piping is taken out from the left side of the unit body, the piping connection operation is complicated and labor-intensive. Moreover, since it is generally installed at a high place on the wall, it is not stable to stand during installation, and the workability is extremely poor.

On the other hand, the maintenance of the air conditioner should be carried out on a regular basis, which includes removing dust and mold stains attached to the heat exchanger and the blower fan. The dust removal operation of the heat exchanger 4 is relatively easy to carry out because the heat exchanger is exposed by removing the front panel.

However, blower 5 is in a state surrounded by heat exchanger 4 except blowing air passage 6, and this air passage is not so big that the hand of the operator can reach in, so above-mentioned heat exchanger 4 must be moved to Maintenance can only be carried out after the air blower 5 can be exposed, and the operation is troublesome. In addition, when the heat exchanger 4 is moved, the pipes of the heat exchanger may be deformed, cracks may be generated in the pipes, and the refrigerant may leak.

Have again, when the unit body 3 is installed and fixed on the air-conditioning room wall surface, the auxiliary installation plate will be installed and fixed on the wall surface in advance, and then the unit body is installed and fixed on the installation plate.

More specifically, the indoor unit is installed in such a way that the rear plate 2 configured with the heat exchanger 4 and the blower 5 is installed and fixed on the mounting plate 10, and then the front panel 1 is hung on the rear plate 2.

In this way, due to the fitting relationship between the front panel 1 and the rear panel 2, the front panel is likely to partially float from the rear panel, therefore, the combination of the rear panel and the mounting plate 10 is weakened, and the rear panel itself sometimes partially floats. out of shape.

The blowing outlet 6 is provided with a wind direction adjusting plate 11, which can adjust the wind direction in the up-down direction and the left-right direction respectively. These wind direction adjustment plates 11 are arranged on 12a of the front and rear condensed water pans 12a, 12b that receive the condensed water generated by the heat exchanger 4.

Since the rear condensed water pan 12 is integrated with the rear plate 2, there is no problem in the installation work. However, the front condensed water pan 12a is equipped with the above-mentioned wind direction adjustment plate 11 on the lower side and cooperates with the thin heat exchanger. , so its depth direction is narrow, and it is obliquely inclined, therefore, it is very troublesome to assemble many parts of the wind direction adjustment plate 11 here.

During maintenance, even if the front panel 1 is detached, the above-mentioned front condensate pan 12a remains in place with the wind direction adjustment plate 11, so it is impossible to work through the air outlet 11.

In view of the above circumstances, a first object of the present invention is to provide an indoor unit of an air conditioner which can facilitate piping connection work during installation of the unit body and improve installation work conditions.

A second object of the present invention is to provide an indoor unit of an air conditioner capable of improving maintenance work conditions of a blower fan.

A third object of the present invention is to provide an air conditioner indoor unit in which the unit body can be more firmly attached to the mounting plate and the rigidity of the unit body can be increased.

A fourth object of the present invention is to provide an air conditioner indoor unit capable of improving the assembly work efficiency of the airflow direction adjustment plate located at the blower outlet and facilitating maintenance work using the blower outlet.

In order to achieve the first object of the present invention, the indoor unit of the air conditioner of the present invention has a unit body composed of an assembly of a front panel and a rear panel, and a heat exchanger and a blower are accommodated inside the unit body. On the front panel, there is an air duct forming part forming an outlet air duct together with the above-mentioned rear plate, and a piping storage cover for shielding the piping connected to the heat exchanger is integrally connected to the air duct forming part. .

In order to meet the above-mentioned second object, the further feature of the indoor unit of the air conditioner of the present invention is that, in the state where the above-mentioned front panel is detached from the above-mentioned rear panel, the size of the opening of the detached rear panel is the smallest to allow operation. The user can take out the blower fan if his hand reaches the maximum.

In order to satisfy the above-mentioned third object, the air conditioner indoor unit of the present invention is further characterized in that the pipe storage cover of the front panel has claws for mounting and fixing the unit body on the wall surface of the air-conditioning room.

In order to satisfy the above-mentioned fourth object, the indoor unit of an air conditioner according to the present invention is further characterized in that a wind direction adjustment plate for adjusting the wind direction of the blown air is provided on the air path forming portion of the front panel.

In order to meet the above-mentioned fourth object, another feature of the indoor unit of the air conditioner of the present invention is that the above-mentioned wind direction adjustment plate has an up and down direction air direction adjustment plate directly provided on the above-mentioned air passage constituting part, and an up and down direction air direction adjustment plate is provided on the up and down direction air direction adjustment plate. left and right direction wind direction adjustment plate.

In order to meet the above-mentioned fourth object, another feature of the indoor unit of the air conditioner of the present invention is that the above-mentioned wind direction adjustment plate has a left-right direction air-flow direction adjustment plate directly provided on the above-mentioned air passage constituting part, and The up and down direction wind direction adjustment plate.

If the air conditioner indoor unit having the above structure is used, the installation work of installing the unit body on the wall surface of the air conditioning room, the piping connection work, and the periodic necessary maintenance work can be easily performed.

Embodiments of the present invention will be described below with reference to the drawings.

In the attached picture:

Fig. 1 shows an embodiment of the present invention, which is a longitudinal sectional view of an indoor unit.

Fig. 2 is an exploded longitudinal sectional view of the indoor unit of this embodiment.

Fig. 3 is an exploded perspective view of the indoor unit of this embodiment.

FIG. 4(A) is a partial perspective view of the wind direction adjusting plate in this embodiment.

FIG. 4(B) is a partial side view of the wind direction adjustment plate.

Fig. 5 is a diagram of the installation structure of the upper and lower louvers of this embodiment.

Fig. 6 is a partial perspective view of a wind direction adjusting plate according to another embodiment.

Fig. 7 is a longitudinal sectional view of a conventional indoor unit.

FIG. 1 shows an assembled indoor unit of an air conditioner, and FIGS. 2 and 3 show exploded views of the indoor unit.

The unit body 20 is constituted by an assembly of a front panel 21 and a rear panel 22 . The front panel 21 is integrally formed of opposing side plate portions 23 , 23 and a plurality of bridge portions 24 .

In the interspace portion constituted by the bridge portions 24, an upper suction port 25a, a front suction port 25b, and a blower port 26 are respectively provided.

A suction grill 27 is attached to a position facing the upper suction port 25a and the front suction port 25b. A detachable filter 28 is inserted along the back side of the suction grill 27 and on the front side of the front panel 21 . That is, the filter 28 can be inserted into or withdrawn from the above-mentioned air outlet 26 provided on the front panel 21 .

A portion of the front panel 21 is extended as it is on both sides of the outlet 26 and along its lower edge, and becomes an air passage component 30 constituting an air outlet air passage 29 described below.

The piping storage cover 31 is composed of the air passage constituting portion 30 of the front panel 21 and the lower end face formed integrally with the air passage constituting portion 30 and extending rearward from the end of the air outlet 26 . The auxiliary piping 32 and the drain hose 33 are housed in the piping storage cover 31 .

A claw portion 34 is integrally provided at the tip end of the pipe storage cover 31 . The function of the claw portion 34 is, when the unit body 20 is installed on the wall surface K of the air-conditioning room, it is locked with the installation plate 35 which is pre-installed and fixed on the wall surface.

As shown in FIG. 2 , the lower end portion of the mounting plate 35 is bent forward, and a claw locking hole 36 is provided therein, and the claw 34 is locked therein. On the upper end portion of the mounting plate 35, a locking piece 38 that locks the locking portion 37 provided on the rear plate 22 from above is provided.

An airflow direction adjusting part 40 is provided at the position of the air outlet air passage 29 of the above-mentioned air passage configuration part 30 . The specific structure is shown in Fig. 4(A) and (B). On the air passage constituting part 30, a plurality of left and right wind direction adjustment plates are integrally formed at predetermined intervals, that is, left and right louvers 41 and frames 41a, and left and right louvers. 41 can be centered on the shaft 41b formed between the upper and lower frames, and can swing left and right through the hinge 41c provided on the shaft 41b.

These left and right louvers 41 form a pair structure with an approximately central portion as a boundary, and are connected by connecting rods 42a, 42b, respectively. The left and right louvers 41 connected by the connecting rods 42a, 42b are directed in the same direction in the moving directions of the connecting rods 42a, 42b, respectively.

In addition, a support plate 44 for pivotally supporting the vertical louver 43 , which is a vertical wind direction adjustment plate, is erected at the center of the frame 41 a of the wind direction adjustment unit 40 . The support plate 44 is bent forward into an inverted U shape, and a pivot hole 45 is provided at the top end.

As shown in FIG. 5 , a rod 47 is provided on the upper and lower louvers 43 , and a pin 46 inserted into the pivot hole 45 is protruded from the rod 47 . Also, rods 47 having pins 46 are provided on the left and right sides of the upper and lower louvers 43 , and the pins 46 are respectively inserted into the respective pivot holes 48 to pivotally support the upper and lower louvers 43 in a vertically rotatable manner.

As shown in FIGS. 1 to 3 , mounting portions 51 a and 51 b for supporting the air blower 50 are provided at both end portions of the rear plate 22 . The blower 50 includes: a drive motor 52 supported by the mounting portion 51a, a circulation fan 53 connected to the rotating shaft of the drive motor, and a bearing tool that pivotally supports the other end side shaft portion of the circulation fan and is installed on the mounting portion 51b. 54.

A rear condensate pan 55 that supports the lower end of the back surface of the heat exchanger 56 and receives condensate from the heat exchanger is provided integrally with the rear plate 22 on the upper portion of the rear plate 22 .

On the other hand, the rear panel 22 has a cross-sectional shape curved along the shape of the circulation fan 53 , and has a stepped portion 22a at its lower end that engages with the top end of the air passage constituting portion 30 of the front panel 21 .

As shown in FIG. 3 , a front drain pan 57 is bridged over the front ends of the mounting portions 51 a and 51 b. There is a predetermined distance between the front condensed water pan 57 and the above-mentioned stepped portion 22a, and in the assembled state, it abuts against the upper end edge of the air outlet 26 provided on the front panel 21 .

Therefore, the air passage constituting portion 30 of the front panel 21 and the outlet air passage 29 are formed on the lower surface of the front drain pan 57 . The front drain pan 57 is provided in a state inclined forward, and supports the front lower end of the heat exchanger 56 .

The above-mentioned heat exchanger 56 is a so-called fin-tube heat exchanger, that is, a plurality of fins are arranged side by side with narrow intervals, and the heat exchange tubes are passed through these fins at the same time, and U-shaped fins are used at both ends of the fins. The connecting pipe portion connects adjacent heat exchange pipes to form a serpentine refrigerant conduction portion.

When the heat exchanger is formed, one side of each fin is cut at a predetermined position (here, three places), and after the heat exchange tube is penetrated and fixed, it is bent with the cut part as a boundary. The formed heat exchanger 56 is composed of heat exchangers divided into four parts up and down with the bent part deformed from the cut part as the boundary, and each heat exchanger is bent to each other through end plates not shown in the figure. state constitutes a unity.

After the heat exchanger 56 is bent, part of it is arranged on the above-mentioned front and rear condensate pans 55, 57, and in a state where its end plates are fixed to the upper parts of the mounting parts 51a, 51b, except for the air outlet duct 29, it surrounds The circulation fan 53 of the blower 50 mentioned above. In addition, the heat exchanger 56 is installed at a position facing the upper suction port 25a and the front suction port 25b provided on the front panel 21 described above.

When adopting the indoor unit of the above structure, due to the operation of the refrigerating cycle and the action of the blower 50, the indoor air is sucked in, passes through the grille 27 and the filter 28, and is drawn through the upper suction port 25a and the front suction port 25b provided on the front panel 21. It is sucked into the unit main body 20 and exchanged heat by the heat exchanger 56 .

The air after the heat exchange, i.e. the air after air conditioning, is guided by the air outlet ventilation channel 29, and is blown out from the air outlet 26 to the room. At this time, the blowing direction can be arbitrarily set by the left and right louvers 41 and the upper and lower louvers 43 .

By adopting the above-mentioned indoor unit, when performing installation work or maintenance with the left piping, there are the following advantages.

That is, when the installation work is performed with the left piping, first the installation plate 35 is installed and fixed on the wall surface K of the air-conditioning room, and the rear plate 22 on which the heat exchanger 56 and the blower 50 are housed is installed there. In this state, because the front panel has not yet been mounted on the rear panel 22, the piping storage cover 31 has not yet covered the auxiliary piping 32 protruding from the heat exchanger 56, so the auxiliary piping 32 can be easily connected to the unattended piping. Connect to the external piping shown in the figure. In addition, the condensed water pipe 33 can also be conveniently connected to the front and rear condensed water pans 57 , 55 so as to protrude from the lower end of the rear plate 22 .

Therefore, according to the indoor unit of the present invention, even if the connection between the auxiliary piping 32 such as the left piping and the external piping is located on the back side of the unit main body 20, the rear plate 22 can be fixed on the mounting plate 35 first. , and perform the necessary piping connections visually. Even when you have to work under unstable conditions such as high places on the wall of the air-conditioning room, it can be carried out conveniently and quickly.

After the piping operation is completed, the front panel 21 is installed on the rear panel 22 to assemble the unit body 20, so the piping storage cover 31 of the front panel 21 can cover the above-mentioned piping 32, 33, so it has the same function as the conventional product.

In addition, when the front panel 21 is installed, the claw portion 34 provided at the top end of the pipe storage 31 is locked in the claw portion locking hole 36 provided on the mounting plate 35. Compared with the structure on the mounting plate, it can be installed and fixed more firmly, and can reliably limit the floating of the unit body 20 from the wall.

Because the entire wind direction adjustment part 40 composed of the left and right louvers 41 and the upper and lower louvers 43 is arranged on the air passage forming part 30 of the front panel 21 forming the air outlet air passage 29, it is different from the conventional product in the lower part of the condensed water pan. Compared with the structure with the wind direction adjustment plate, the assembly operation is more convenient.

Furthermore, when the front panel 21 is detached, the above-mentioned airflow direction adjustment part 40 integrated therewith is detached at the same time. The heat exchanger 56 will be exposed, and of course the dust attached to it can be removed. There are no obstacles, so the blower fan 53 can be easily maintained from here.

In addition, the opening area of the above-mentioned opening part A must be able to reach in even a small operator's hand in order to facilitate the maintenance and maintenance of the fan 53 . Although the opening A does not need to be too large, it is preferable to set it within a range where the circulation fan can be taken out so that the circulation fan can be taken out from the opening A and the operator can carry out the work.

In the above-mentioned embodiment, the wind direction adjustment part 40 composed of the left and right louvers 41 and the support plate 44 is directly provided on the air passage forming part 30, so that the upper and lower louvers 43 are supported on the above-mentioned support plate 44, but it is not necessary to do this. limit.

For example, as shown in FIG. 6, the rod 47 of the upper and lower louvers 43A may be pivotally supported on the front panel 21, and the left and right louvers 41A may be pivotally supported on one side of the upper and lower louvers. At this time, when the front panel 21 is removed, the wind direction adjustment plate 40A is also removed, and the opening of the rear panel is exposed.

As mentioned above, according to the present invention, the front panel is provided with the air passage constituting part which forms the outlet air passage together with the rear plate, and the piping storage cover is integrally connected to the air passage constituting part, so the following effects are obtained. It facilitates the piping connection work when installing the unit body, and improves the installation work even if it is taken out from the left side.

At the same time, because the size of the opening of the rear panel separated from the front panel is the minimum that can be inserted into the operator's hand, and the maximum that can be taken out of the blower fan, it has the following effects, especially improving the blower that is prone to dust and mildew. Fan maintenance work.

In addition, since the piping storage cover on the front panel is provided with claws for mounting and fixing the unit body on the wall surface of the air-conditioned room, there is an effect that even if the assembly of the rear panel and the front panel is poor, the The engagement of the claws on the front panel also securely mounts and fixes the unit body, increasing its rigidity.

In addition, since the wind direction adjusting plate for adjusting the air direction of the blown air is provided on the air duct constituent part of the front panel, the following effects can be achieved. Maintenance work becomes convenient.

Claims (6)

1. An indoor unit of an air conditioner, the unit body is composed of an assembly of a front panel and a rear panel, and a heat exchanger and a blower are accommodated inside the unit body, and it is characterized in that, on the front panel, a There is an air passage constituting part forming an outlet air passage together with the rear plate, and a pipe storage cover for shielding the pipes connected to the heat exchanger is integrally connected to the air passage constituting part. 2. The indoor unit of an air conditioner according to claim 1, wherein the air blower can pass through the air duct in a state where the front panel is detached from the rear panel. 3. The indoor unit of an air conditioner according to claim 1, wherein the piping storage cover of the front panel is integrally provided with claws for attaching and fixing the unit body to the wall surface of the air-conditioning room. 4. The indoor unit of an air conditioner according to claim 1, wherein a wind direction adjustment plate for adjusting the wind direction of the blown air is provided on the air passage constituting portion of the front panel. 5. The indoor unit of an air conditioner according to claim 4, wherein the air direction adjustment plate includes an up and down air direction adjustment plate directly provided on the forming part of the air duct, and an up and down air direction adjustment plate provided on the up and down direction adjustment plate. Left and right wind direction adjustment boards on the board. 6. The indoor unit of an air conditioner according to claim 4, wherein the air direction adjustment plate includes a left and right air direction adjustment plate directly provided on the air passage constituting part, and a left and right air direction adjustment plate provided on the left and right air direction adjustment plate. The up and down direction wind direction adjustment board on the board.

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