CN103946640B - Embedded air conditioner - Google Patents

Abstract

Unit main body is arranged in the ceiling of building, uses dividing plate to be to be configured with the supply fan room of pressure fan and be configured with the heat-exchanging chamber of indoor heat converter by the inside division of unit main body.Including the first access hole and the second access hole, wherein, described first access hole is arranged on the unit main body sidepiece relative with supply fan room, and described second access hole is arranged on the unit main body sidepiece relative with heat-exchanging chamber.

Description

Embedded air conditioner

technical field

The embodiment of the present invention relates to a built-in air conditioner, which is installed in the ceiling of a building, and blows the heat-exchanged air sucked in and heat-exchanged into the room through a blowing duct.

Background technique

A built-in air conditioner (ceiling embedded air conditioner) installed in the ceiling of a building is commonly used. An indoor heat exchanger and a blower are accommodated in the unit main body. For example, a suction port is opened on one side of the main body, and a blowing duct is connected to the other side. Driven by the blower, the air is sucked in from the suction port to exchange heat with the indoor heat exchanger, and the heat-exchanged air is blown out from the blowing duct to the room.

Such an air conditioner includes an electrical control unit that drives electrical components such as an electric expansion valve and a blower connected to the indoor heat exchanger through refrigerant pipes, and a control board on which the electrical control unit is mounted to form a circuit. The electrical control components and the control board mentioned above are housed in the electrical component box, but they inevitably generate heat during operation.

In this case, the temperature inside the electrical component box rises, and the internal components are adversely affected by the heat. Therefore, for example, in "Patent Document 1", an electrical box is attached to the outer surface of the unit main body. The electrical box includes a protruding portion having an air inlet and an air outlet, and the protruding portion protrudes from an opening provided on the outer surface of the unit body into an air blowing path of a blower fan inside the unit body.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2009-30829

Contents of the invention

The technical problem to be solved by the invention

However, since the installation site of the built-in air conditioner is in the ceiling where it cannot be visually confirmed from the room, in case a fire starts from the electrical box, in order to prevent the fire from spreading in the ceiling, it is ideal to put the electrical equipment Contained inside the main body of the unit.

In addition, as the refrigeration cycle operates, drain water is generated and dripped from the indoor heat exchanger. The above-mentioned drain is stored in a drain storage pan provided at the lower part of the indoor heat exchanger, and is usually treated by a drain pump provided in the drain storage pan.

When performing maintenance work on the above-mentioned drainage storage pan or the drainage pump, since there is no inspection port provided on the unit body, one side of the side plate constituting the unit body is all removed for maintenance. Therefore, it takes a lot of man-hours to perform maintenance treatment on the drain storage pan or the drain pump.

Under such circumstances, there is a demand for a built-in air conditioner in which the electric component box is housed in the unit main body and the maintenance work for the drain storage pan and the drain pump is simplified.

Technical solutions adopted to solve technical problems

In the built-in air conditioner of this embodiment, the unit main body is installed in the ceiling of a building, and the inside is partitioned into a blower room in which a blower is placed and a heat exchange room in which an indoor heat exchanger is placed.

A first inspection port is provided on the side of the unit body opposite to the blower chamber, and a second inspection port is provided on the side of the unit body opposite to the heat exchange chamber.

Description of drawings

Fig. 1 is a side view of the built-in air conditioner according to this embodiment.

Fig. 2 is a side view of a built-in air conditioner in a different form from Fig. 1 according to the present embodiment.

Fig. 3 is a perspective view of the built-in air conditioner according to the present embodiment with the lower panel of the unit main body removed.

Fig. 4 is a cross-sectional plan view of the built-in air conditioner according to the present embodiment.

Fig. 5 is a perspective view of the built-in air conditioner in which the first cover is opened according to the present embodiment.

Fig. 6 is a perspective view of a part of the unit main body with the first inspection port opened and the second cover plate removed in the present embodiment.

Fig. 7 is a perspective view of a part of the unit main body after the electrical component box is further removed from the state of Fig. 6 according to the present embodiment.

8 is a cross-sectional view showing a part of the unit main body of the electrical component box from the heat exchange chamber side through the partition plate according to the present embodiment.

Fig. 9 is a perspective view of a first cover plate in this embodiment.

FIG. 10 is a perspective view of a part of the unit main body showing the first inspection port and the electrical component box with the first cover removed according to the present embodiment.

FIG. 11A is a perspective view showing different engagement states of the first hook hole and the first claw according to the present embodiment.

FIG. 11B is a perspective view showing different engagement states of the first hook hole and the first claw according to the present embodiment.

Fig. 12 is a cross-sectional plan view showing an engaged state of the first hook hole with the first claw according to the present embodiment.

Fig. 13 is a perspective view of a part of the unit main body in which the first cover plate is attached to the first inspection port according to the present embodiment.

FIG. 14 is a partial perspective view of the unit main body showing the first cover after loosening the mounting screws according to the present embodiment.

15 is a perspective view of a part of the unit main body after the first cover plate is closed after connecting relatively thin power lines and signal lines to the electrical component box according to the present embodiment.

Fig. 16 is a perspective view of a part of the unit main body after the first cover is closed after connecting a normal thick power line and signal line to the electrical component box according to the present embodiment.

Fig. 17 is a front view showing a first cover plate according to a modified example of the present embodiment.

Fig. 18 is a perspective view of a part of the unit main body in which a first cover plate according to a modified example is attached to a first inspection port according to the present embodiment.

Fig. 19 is a perspective view of a part of the unit main body showing the first inspection port of the electrical component box according to the present embodiment.

FIG. 20 is a perspective view of a part of the unit main body showing the first inspection port with the electrical component box removed according to the present embodiment.

Fig. 21 is a perspective view of the electrical component box of the present embodiment alone.

Fig. 22 is a front view showing part of a unit main body of the temporarily fixed electrical component box according to the present embodiment.

FIG. 23 is a perspective view of a part of the unit main body viewed from the bottom to the top, showing the temporarily fixed electrical component box according to the present embodiment.

FIG. 24 is an enlarged longitudinal sectional view showing a main part for temporarily fixing the electrical component box to the unit main body according to the present embodiment.

detailed description

Hereinafter, this embodiment will be described based on the drawings.

Fig. 1 is a side view of the built-in air conditioner AC. Fig. 2 is a side view of a built-in air conditioner AC of a different example.

In any example, the built-in air conditioner AC is installed in the ceiling U of the building S where the room (indoor area to be air-conditioned) R is relatively large.

Specifically, a suspension fitting 2 is protruded from a side portion of the unit main body 1 , and a suspension bolt F suspended from a ceiling T of a building S is inserted into a hole provided in the suspension fitting 2 . In addition, a nut is screwed and inserted into the suspension bolt F, and the unit main body 1 is suspended together with the suspension fitting 2 .

The unit main body 1 has a thin rectangular box shape whose height dimension is shorter than the width direction (inward and outward direction of the paper) and depth direction (left-right direction of the paper). Below the ceiling decorative panel K is a room R where heat exchange is performed by a built-in air conditioner AC.

In the unit body 1 of any example, an indoor heat exchanger and an air blower which are not shown here are housed and arranged in the unit body 1 . The blowing duct 3 is connected to the front part a of the unit main body 1 . The blowing duct 3 extends from the unit main body 1 along the ceiling U of the building S, that is, between the ceiling decorative panel K and the ceiling T, and is connected to an unillustrated suction grill provided at a predetermined position of the ceiling decorative panel K. .

The air filter 4 is attached to the lower surface part b of the unit main body 1 shown in FIG. The air filter 4 described above covers the suction port provided in the unit main body 1 in a detachable manner. A suction grill G is provided on a part of the ceiling decorative panel K facing the air filter 4 .

The unit main body 1 shown in FIG. 2 is provided with a suction port in the back part c, and is connected to the suction duct 5 through an air filter here. The suction duct 5 extends along the ceiling U, and is connected to a not-shown blow-out grill provided at a predetermined position of the ceiling decorative panel K. As shown in FIG.

As for the built-in air conditioner AC, any one of the unit main body 1 shown in FIG. 1 and the unit main body 1 shown in FIG. 2 is selected according to the conditions of the installation site.

The built-in air conditioner AC configured in this way drives the compressor accommodated in the outdoor unit, circulates the refrigerant from the outdoor unit to the indoor heat exchanger, and evaporates or condenses the refrigerant in the indoor heat exchanger.

On the other hand, room R air is guided into the unit main body 1 from the suction port covered by the air filter 4 via the suction guide grill G or the suction duct 5 . Next, it flows through the indoor heat exchanger and exchanges heat with the refrigerant circulating inside.

The air sucked into the unit main body 1 is cooled or warmed by the action of the indoor heat exchanger. The above-mentioned heat-exchanged air such as cold air or warm air is blown out to the blowing duct 3 and then guided into the room R through the blowing grill. Therefore, cooling or heating of the room R is realized.

Hereinafter, the configuration of the built-in air conditioner AC will be described. Note that descriptions of the suction port, the air filter, and the suction duct are omitted.

Fig. 3 is a perspective view of the unit main body 1 showing the inside with the lower surface panel removed. FIG. 4 is a cross-sectional plan view of the unit body 1 .

The unit main body 1 is composed of four side plates, a top plate, and a lower surface plate, wherein the four side plates are arranged opposite to each other and arranged in a quadrangular frame shape, the above-mentioned top plate is provided across the upper edge of each side plate, and the lower The surface plate is provided over the lower edge of each side plate. An unillustrated blowing duct is connected to a part of the side plate, and a suction duct is connected to the opposite side surface or a suction port is provided in a part of the lower surface plate.

The interior of the unit main body 1 is divided into a blower chamber 10 shown on the left side in FIG. 3 and a lower side in FIG. 4 and a heat exchange chamber shown on the right side in FIG. 3 and an upper side in FIG. 11.

A blower 12 is arranged in the blower chamber 10 . This air blower 12 comprises: left and right two fan drive motors 13, the blower fan (for example the sirocco fan that is made up of about 50 fin groups) 14 that is connected in series with the respective rotating shafts of this fan drive motor 13, with each air blower The casing 15 covering the peripheral surface of each blower fan 14 is such that the axial side of the fan 14 is opened.

The casing 15 of the air blower 12 includes an air outlet body 15 a opened on the partition plate 8 . The blower fan 14 is driven to rotate by the fan drive motor 13 , air is sucked in from the axial direction of the blower fan 14 , and blown out from the circumferential air outlet body 15 a through the partition plate 8 to the heat exchange chamber 11 .

In the blower chamber 10 constituted in this way, an electrical component box 17 including an electrical control component for controlling all the electrical components housed in the unit main body 1 and an electrical control component mounted with the electrical component box 17 are installed as described later. To constitute the control board of the electrical circuit, etc.

An indoor heat exchanger 18 is disposed in the heat exchange chamber 11 . The indoor heat exchanger 18 is a fin-and-tube heat exchanger in which a plurality of fins are arranged side by side with narrow gaps therebetween, and refrigerant tubes penetrate the fins. It has a flat plate shape as a whole and is arranged obliquely.

One end portion of a refrigerant pipe constituting the indoor heat exchanger 18 is connected to a refrigerant pipe connection port 19 a provided on one side plate of the unit main body 1 . The other end of the refrigerant pipe is also connected to the refrigerant pipe connection port 19b provided on the same side plate of the unit main body 1 . The indoor heat exchanger 18 is connected to an unillustrated outdoor unit using a refrigerant pipe (air pipe) connected to the refrigerant pipe connection port 19a and a refrigerant pipe (liquid pipe) connected to the refrigerant pipe connection port 19b.

In addition, a drain storage pan not shown here is provided on the lower surface of the indoor heat exchanger 18 . The drain storage tray stores drain generated from the indoor heat exchanger 18 accompanying the operation of the refrigeration cycle. In addition, the drain pump 20 is arranged so as to be submerged in the drain in the drain storage pan, and forcibly discharges the drain accumulated in the drain storage pan.

The drain pump 20 is supported as described below and is connected to a drain pipe connection port 20a provided on the same side plate of the unit main body 1 as the side plate on which the refrigerant pipe connection ports 19a and 19b are provided. In addition, a drain discharge port 20b is provided, which is used when the drain is automatically drained from the drain storage pan to the outside by using a difference in height.

FIG. 5 is an external perspective view showing the built-in air conditioner AC in which the first cover plate 24 is opened to show the electric component box 17 . 6 is a partial perspective view of the unit main body 1 showing the electrical component box 17 with the first inspection port 21 opened from the side of the heat exchange chamber 11 and removing the second cover plate 25 to show the internal structure.

A first inspection port 21 and a second inspection port 22 are provided on one side plate of the unit main body 1 . The first inspection opening 21 is closed by the first cover plate 24 so that it can be opened and closed freely, and the second inspection opening 22 is closed by the second cover plate 25 that can be opened and closed freely.

FIG. 5 shows a state where the first inspection port 21 is opened by turning the first cover plate 24 , and the second inspection port 22 is closed by the second cover plate 25 . The electrical component box 17 is fitted into the first inspection port 21 . The front surface of the electrical component box 17 is an opening, and communicates with the first inspection port 21 . Therefore, the first cover plate 24 also has a function of opening and closing the opening of the electrical component box 17 .

As shown in FIG. 6 , the first inspection port 21 and the second inspection port 22 are provided facing respective side portions of the blower chamber 10 and the heat exchange chamber 11 divided by the partition plate 8 . Here, illustration of the first cover plate 24 that opens and closes the first inspection port 21 is omitted. The drain pump 20 described above and a float switch (not shown) are attached to the back side of the second cover plate 25 that opens and closes the second inspection port 22 .

As the second cover plate 25 is opened from the second inspection port 22, the drain pump 20 and the float switch are integrally removed from the drain storage pan. Therefore, maintenance work on the drain pump 20 and the float switch can be performed, and maintenance work can be performed on components arranged in the heat exchange chamber 11 other than the drain storage pan through the opened second inspection port 22 .

The electrical component box 17 is detachably attached to the unit body 1 as will be described later.

7 is a partial perspective view of the unit body 1 in a state where the electrical component box 17 is removed from the unit body 1 together with the first cover plate 24 .

As mentioned above, the electrical component box 17 is a box body with a front opening, side surfaces facing the opening, and side plates on the upper, lower, left, and right peripheral surfaces. In addition, the opening is appropriately provided so that cooling air can flow through the opening as the air blower 12 is driven. A control board is mounted on the side. The control board is equipped with electrical control components and connector groups for controlling the air blower 12 and all other electrical components accommodated in the unit main body.

In the state where the electrical component box 17 is fitted into the first inspection port 21, the side plate 17a on one side of the electrical component box 17 is in contact with the partition plate 8, but only the size of the side plate 17a is formed to be smaller than that constituting the other peripheral surfaces. The side panels are short in size.

On the other hand, in the vicinity of the end portion of the partition plate 8 on the side of the first inspection port 21 , a pair of long holes separated up and down, that is, wiring holes 27 a and 27 b are opened. The wiring holes 27 a , 27 b are provided at positions facing the side plate 17 a of the electrical component box 17 in a state where the electrical component box 17 is fitted into the first inspection port 21 .

8 is a partial cross-sectional view of the unit main body 1 showing the electric component box 17 fitted in the first inspection port 21 through the partition plate 8 from the heat exchange chamber 11 side.

Here, the relationship between the long hole dimensions of the plurality of wiring holes 27 a and 27 b provided in the partition plate 8 and the length of the side plate 17 a contacting the partition plate 8 of the electrical component box 17 is shown.

The upper and lower pair of wiring holes 27a and 27b have the same length dimension, but their positions are shifted from each other. That is, the wiring hole 27 a on the upper side is provided so as to be shifted to the first inspection port 21 and the second inspection port 22 side by a certain degree than the lower wiring hole 27 b.

In a state where the electrical component box 17 is removed from the first inspection port 21, the respective wiring holes 27a, 27b remain open. However, in the state where the electrical component box 17 is inserted into the first inspection port 21, most of the wiring holes 27a, 27b are closed by the side plate 17a of the electrical component box 17, and only the first inspection port 21, the second The end portion on one side of the inspection port 22 is slightly open.

Since the positions of the wiring holes 27a and 27b are shifted, the opening area of the remaining upper wiring hole 27a is larger than that of the lower wiring hole 27b.

Heat exchange chamber side electric components such as drain pump 20 , float switch, electric expansion valve (PMV) motor, heat exchanger temperature sensor, etc. are installed in heat exchange chamber 11 , and wiring is connected to them respectively. The electrical wiring connected to each electrical component is inserted through the wiring holes 27 a and 27 b provided in the upper and lower parts of the partition plate 8 , and is electrically connected to the inside of the electrical component box 17 .

In a state where the electrical component box 17 is not fitted into the first inspection port 21 , electrical wiring connected to each heat exchange chamber side electrical component is inserted through the upper and lower wiring holes 27 a, 27 b. Since each wiring hole 27a, 27b has an opening area larger than that of the wiring, insertion work is easy and operability is good.

After the insertion, the electrical component box 17 is inserted into the first inspection port 21, and after being fixed as described later, the electrical wiring that has been inserted through the wiring holes 27a, 27b is connected to the connector in the electrical component box 17. group connections. At this time, as shown in FIG. 8, each wiring hole 27a, 27b is closed by the side plate 17a of the electrical component box 17 so that the minimum opening area required for the insertion of an electrical wiring is reserved.

Therefore, during the actual refrigeration cycle operation, the air flowing from the heat exchange chamber 11 into the electric component box 17 can be suppressed to a minimum. Leakage of the heat exchange air after heat exchange with the indoor heat exchanger 18 is suppressed, and heat exchange efficiency can be improved.

In addition, the electrical wiring includes a power supply line requiring electric power for driving the motor such as the drain pump 20 and a signal line requiring weak electric power such as the heat exchanger temperature sensor. Therefore, electric wiring is divided into a power supply line and a signal line, and these are respectively inserted into the different wiring hole 27a or 27b. By doing so, the electrical control parts are less likely to be affected by noise, and quality can be improved.

Since the positions of the wiring holes 27a and 27b are staggered, when the electrical component box 17 is inserted into the first inspection port 21, the opening area of the remaining wiring holes 27a on the upper side is larger than that of the wiring holes on the lower side. The thread hole 27b has a large opening area. On the other hand, since the wire diameter of the power line is large and the wire diameter of the signal line is small, the power line is inserted through the upper wiring hole 27a and the signal line is inserted through the lower wiring hole 27b.

In addition, since the electrical component box 17 is detached from the first inspection port 21, it is possible to easily perform the insertion confirmation and maintenance work of the electrical wiring connected to the heat exchange chamber side components such as the drain pump 20 and the like. It goes without saying.

Next, the first cover plate 24 for opening and closing the first inspection port 21 will be described in detail.

FIG. 9 is a perspective view of the first cover plate 24 . FIG. 10 is a partial perspective view of the unit main body 1 showing the first inspection port 21 and the electrical component box 17 with the first cover plate 24 removed.

As shown in FIG. 9, the said 1st cover plate 24 has the folded-back part 24b which folds back with respect to the plate-shaped main board 24a along the peripheral edge part of this main board 24a. The side edge portion and the upper edge portion constituting the peripheral edge portion are straight to each other, but the other side edge portion opposite to the side edge portion is formed to be narrow at the top and stepped at the entire lower portion corresponding to the other side edge portion of the first inspection port 21. widened form.

In the lower edge part of the 1st cover plate 24, the 1st recessed part 24c and the 2nd recessed part 24d smaller than this 1st recessed part 24c are separately provided. In contrast, a third recess 21a is provided at the lower edge of the first inspection port 21, and the third recess 21a is located at a position opposite to the first recess 24c provided on the first cover plate 24, and faces oppositely. One side is sunken.

On one side edge of the folded portion 24b of the first cover plate 24, a first hook hole 28a and a second hook hole 28b in the shape of an elongated slit are provided vertically apart. On the side portion of the main board 24a opposite to the side edge on which the above-mentioned first hook hole 28a and the second hook hole 28b are provided, the first screw fixing made of long holes up and down is separately arranged up and down. The hole 29a and the second screw fixing hole 29b are used.

Since the first hooking hole 28a and the second hooking hole 28b are provided at the side edge of the folded portion 24b formed in a straight shape, the second hooking hole 28b is located directly below the first hooking hole 28a. On the other hand, since the side portion of the main plate 24a is formed in a stepped shape, the second screw fixing hole 29b is not located directly under the first fixing hole 29a, but is provided in a shifted position.

On the other hand, as shown in FIG. 10 , on one side edge of the first inspection port 21 in the unit main body 1 , a first claw 30 a and a second claw 30 b formed by cutting up protrude vertically.

In addition, at the position near the other side edge of the first inspection port 21, that is, the side surface of the unit main body 1, a pair of screw holes are arranged up and down, and the mounting screws (bottom mounting screws) are threaded and inserted into the pair of screw holes. Screws are not shown) 31.

Of the first cover plate 24 and the first inspection port 21 configured in this way, the first cover plate 24 is attached to the first inspection port 21 as follows.

11A and 11B are perspective views showing different states in which the first hook hole 28 a provided in the first cover plate 24 is engaged with the first claw 30 a. Fig. 12 is a cross-sectional plan view showing an engaged state between the first hook hole 28a and the first claw 30a.

Here, although not shown, the relationship between the first claw 30b and the second hook hole 28b is completely the same as the relationship between the first claw 30a and the first hook hole 28a, so description thereof will be omitted.

The first claw 30 a provided on the unit main body 1 engages with the first hook hole 28 a provided on the first cover plate 24 . Since the up-down dimension of the first hooking hole 28a is formed to be much longer than the up-down dimension of the first claw 30a, as shown in FIGS. It can freely move up and down within the range.

In addition, as shown in FIG. 12, the first claw 30a is formed by bending in two stages from the unit main body 1, and the width dimension of the first hook hole 28a is larger than the plate thickness of the first claw 30a with a margin. Therefore, the first cover plate 24 having the first hook hole 28 a can be turned relative to the unit main body 1 .

FIG. 13 is a partial perspective view of the unit main body 1 showing a state in which the first cover plate 24 is actually attached to the first inspection port 21 and rotated. 14 is a partial perspective view showing the unit main body 1 in a state where the first inspection port 21 is closed with the first cover plate 24 and the mounting screws 31 are loosened to be freely movable.

When the first cover plate 24 is installed on the first inspection port 21, the first hook hole 28a and the second hook hole 28b provided on the first cover plate 24 are inserted along one end edge of the first inspection port 21. The first claw 30a and the second claw 30b protrude. As shown in FIG. 13, the first cover plate 24 can rotate freely.

Then, the first cover plate 24 is rotated so that the first cover plate 24 is in close contact with the peripheral portion of the first inspection port 21 . Next, the mounting screws 31 are loosely screwed and inserted into the screw holes of the unit main body 1 through the first screw fixing holes 29 a and the second screw fixing holes 29 b provided in the cover plate 24 . As shown in FIG. 14, the 1st cover plate 24 loosely closes the part except a part (3rd recessed part 21a) of the 1st inspection port 21. As shown in FIG. In addition, by releasing the hand pressing the first cover plate 24 , the first cover plate 24 will stagger and fall due to its own weight.

In this state, the upper ends of the first hook hole 28a and the second hook hole 28b of the first cover plate 24 are engaged with the first claw 30a and the second claw 30b of the unit main body 1, and the first screw The upper ends of the fixing holes 29 a and the second screw fixing holes 29 b are engaged with the mounting screws 31 . Moreover, the 1st recessed part 24c provided in the lower edge part of the 1st cover plate 24, and the 3rd recessed part 21a provided in the lower edge part of the 1st inspection port 21 overlap each other with a gap.

That is, even if the first cover plate 24 is located at the lowermost position within the range of the first hook hole 29a and the second hook hole 29b, the first concave portion 24c will not completely cover the third part of the first inspection port 21. The recess 21a is closed. In addition, the 2nd recessed part 24d is provided only for avoiding the head part of the mounting screw fastened to the unit main body 1, and does not engage with a field wiring. The case where the first cover plate 24 is attached to the first inspection port 21 has been described above, but in the state where the necessary wiring processing has been performed in the electrical component box 17, wiring in the electrical component box 17 is performed at regular intervals. The same applies to maintenance work.

That is, it is necessary to open the first inspection port 21 during the maintenance work described above. Although the first inspection port 21 can be opened by rotating the first cover plate 24, the first hook hole 28a and the second hook hole 28b that are located on the first cover plate 24 can be kept locked on the The state shown in FIG. 13 of the first claw 30a and the second claw 30b of the unit main body 1 .

Therefore, without removing the first cover plate 24 from the first inspection port 21, wiring work and maintenance work can be performed, and operability can be improved.

After wiring in the electrical component box 17 is processed, the above-mentioned electrical wiring is inserted through the third recess 21a provided at the first inspection port 21 and the first cover plate 24 provided at the first inspection port 21 to close the first inspection port 21. An opposite portion of the concave portion 24c.

FIG. 15 is a partial perspective view of the unit main body 1 in a state where the first cover plate 24 is closed after the relatively thin power line Da and the signal line C are connected to the electrical component box 17 . FIG. 16 is a partial perspective view of the unit main body 1 in a state where the first cover plate 24 is closed after the normal thick power line Db and the signal line C are connected to the electrical component box 17 .

In any case, after the wiring processing in the electrical component box 17 is completed, the first cover 24 is rotated so that the first cover 24 is in close contact with the unit main body 1 to close the first inspection port 21 . The mounting screws 31 are loosely screwed and inserted into the screw holes of the unit main body 1 through the first screw fixing holes 29 a and the second screw fixing holes 29 b provided in the first cover plate 24 .

In this state, the hand is released from the first cover plate 24, and the first cover plate 24 is lowered by its own weight. In any case, although the first recess 24c is aligned with the third recess 21a, when the relatively thin power line Da and signal line C shown in FIG. 15 are wired, the first cover 24 is almost the largest. The limit is lowered, and it is in contact with the electrical wiring Da and C. At this point, the mounting screws 31 are tightened.

When connecting the power supply line Db and the signal line C of a normal diameter shown in FIG. The descending amount of the first cover plate 24 is very little, the first claw 30a, the second claw 30b are positioned at the approximate middle part of the first hook hole 28a, the second hook hole 28b, and the mounting screw 31 is positioned at the first screw for fixing. The hole 29a and the substantially middle portion of the second screw fixing hole 29b. At this point, each mounting screw 31 is tightened.

In this way, the position of the first cover plate 24 can be automatically changed according to the difference of various thicknesses of field wiring passing through the first cover plate 24 . It is possible to omit the conventional work of inserting rubber gaskets into the wiring through holes or sticking heat insulators inserted into the slits after the wiring work is completed, and using other components to block the gap between the electrical wiring and the through holes. Cost reduction and operability improvement are realized.

In addition, depending on the maintenance work in the electrical component box 17, there is also a case where the work space cannot be ensured only by turning the first cover 24, and it is necessary to remove the first cover 24 to completely open the front opening of the electrical component box 17. Condition. However, since the mounting screws 31 for mounting and fixing the first cover plate 24 are small and easily lost, it is desirable to maintain the state of being screwed and inserted on the unit main body 1 .

FIG. 17 is a front view showing a modification example of the first cover plate 24Z for satisfying such requirements. FIG. 18 is a partial perspective view of the unit body 1 in a state in which the first inspection port 21 is opened using a first cover plate 24Z of a modified example.

The first hooking hole 28a and the second hooking hole 28b provided on the first cover plate 24Z and the first claw 30a and the second claw 30b provided on the unit main body 1 may have the previously described shapes and structures.

The first screw fixing holes 29aa and 29bb provided in the first cover plate 24Z are formed in a shape in which their lower ends are expanded. Specifically, large hole portions 100 , 101 are provided at lower end portions of the second screw fixing holes 29 aa , 29 bb. The diameter of the large hole portion 100 is set to be larger than the head diameter of the mounting screw 31 .

When the position of the first cover plate 24Z is shifted and positioned after field wiring, the mounting screws 31 are positioned closer to the lower ends of the first fixing holes 29aa, 29bb, that is, the large hole portions 100, 101. upper position. Therefore, by tightening the mounting screws 31, the first cover plate 24Z can be fixed.

At the time of maintenance work, after the mounting screws 31 are loosened, the first cover plate 24Z is pushed up. Thus, the mounting screw 31 faces the large hole portions 100, 101 of the first fixing holes 29aa, 29bb. As described above, the diameters of the large holes 100 and 101 are set to be larger than the diameters of the heads of the mounting screws 31 .

Therefore, as shown in FIG. 18 , the first cover plate 24Z can be pulled out and rotated from the mounting screws 31 without removing the mounting screws 31 . Then, what is necessary is just to pull out the first hooking hole 28a and the second hooking hole 28b from the first claw 30a and the second claw 30b, and the first inspection port 21 is completely opened. Therefore, maintenance work can be easily performed on the electric component box 17, and operability can be improved.

Next, the attachment structure of the electrical component box 17 to the unit main body 1 will be described in detail. FIG. 19 is a partial perspective view of the unit body 1 showing a state in which the electrical component box 17 is attached and fixed to the first inspection port 21 . FIG. 20 is a partial perspective view of the unit main body 1 showing the first inspection port 21 after the electrical component box 17 is attached. FIG. 21 is a perspective view of the electrical component box 17 alone.

First, the first inspection port 21 will be described. As shown in FIG. The above-mentioned pair of upper and lower wiring holes 27a and 27b are provided at the end of the spacer 8 . At the side edge of the first inspection port 21 on the side of the partition plate 8 , a first claw 30 a and a second claw 30 b are bent and formed vertically and separately.

The upper edge portion of the first inspection port 21 is a bent piece formed by bending, and a slit 32 serving as an elongated hole is provided along the bent piece. The remaining edge is in the above-mentioned step shape, or is formed with a concave portion.

A lower bent piece 33 is formed by bending along the lower end of the partition plate 8 , and a plurality of, for example, two holes 34 , 34 are provided there. A hooking protrusion 35 protruding toward the blower chamber 10 side is integrally provided on a part of the lower bent piece 33 separated from the holes 34 , 34 . A plurality of burring holes 36 , 36 serving as positioning holes are provided on the hooking protrusion 35 .

The lower portion of the unit main body 1 separated from the lower portion of the first inspection port 21 is a bent piece portion 37, and the above-mentioned lower surface plate constituting the unit main body 1 can be attached thereto.

As shown in FIG. 21 , the electrical component box 17 has an opening on the front surface, a side plate is provided at a position facing the opening, and side plates are provided on the upper, lower, and left and right sides of the side plate. . The width dimension of some side plates 17a is formed shorter than the width dimension of other side plates. The control board on which the electric control components are mounted is fitted into the side plate facing the opening, etc., as described above.

A protrusion 38 formed by bending integrally with the side plate 17 b is provided on a part of the front surface of the side plate 17 b forming the upper side of the electrical component box 17 . The protrusion 38 has a length and thickness capable of being inserted into the slit 32 provided in the unit main body 1 .

In addition, the protrusion 38 is provided with a temporary fixing hole 39 constituted by a long hole, and the temporary fixing hole 39 is formed in a length dimension capable of inserting the hooking protrusion 35 provided on the unit main body 1 .

A plurality of, for example, two screw holes 40 , 40 are provided on the side plate 17 c forming the lower side of the electrical component box 17 . The screw holes 40 , 40 are located at positions facing the holes 34 , 34 provided in the lower bending piece 33 of the partition plate 8 in a state where the electrical component box 17 is fitted into the first inspection port 21 .

The electrical component box 17 configured in this way is fitted into the first inspection port 21 . Therefore, as shown in FIG. 19, the protrusion 38 provided on the upper side plate 17b of the electrical component box 17 is inserted into the slit 32 located on the upper edge of the first inspection port 21, and the bending piece of the unit main body 1 is used. The portion 37 supports the side plate 17 c constituting the lower side portion of the electrical component box 17 .

The side plate 17 a of the electrical component box 17 is in contact with the partition plate 8 , and the screw holes 40 provided on the lower side of the electrical component box 17 face the holes 34 , 34 provided on the lower side of the partition plate 8 . Therefore, by screwing and inserting the mounting screws 41 into the screw holes 40 through the holes 34 , the electrical component box 17 can be mounted in a state in which the first inspection port 21 is completely closed.

That is, by inserting the protruding portion 38 of the electrical component box 17 into the slit 32 provided at the upper edge of the first inspection opening 21 , positioning for closing the first inspection opening 21 with the electrical component box 17 can be achieved. In addition, the electrical component box 17 can be fixed to the first inspection port 21 using a plurality of, for example, two mounting screws 41 .

The electric component box 17 can be fixed using a small number of mounting screws 41 without spending man-hours for installing it, so that work time can be shortened and operability can be improved.

As described above, since the opening of the electrical component box 17 is completely open, it is only necessary to close the front opening of the electrical component box 17 with the first cover plate 24 after performing necessary wiring work.

In addition, although the electrical component box 17 is temporarily installed in a position to close the first inspection port 21, the electrical component box 17 may interfere with the operation during the wiring work, or the electrical component box 17 may be damaged during the maintenance work. The case where the parts box 17 interferes with the operation, etc.

FIG. 22 is a partial front view of the unit main body 1 after the electrical component box 17 is temporarily fixed. FIG. 23 is a partial perspective view of the unit main body 1 of the temporarily fixed electrical component box 17 viewed from below. FIG. 24 is an enlarged vertical cross-sectional view of a main part in which the electrical component box 17 is temporarily fixed to the unit main body 1 .

In the case where the operation is obstructed when the electrical component box 17 is in the normal position closing the first inspection port, the electrical component box 17 is moved to the temporary fixing position.

Specifically, after the mounting screws 41 are removed, the lower side plate 17c of the electrical component box 17 can be lifted from the electrical component box 17 by picking up the electrical component box 17 to stagger the position to the rear of the first inspection port 21 and form an inclined posture. The lower bending piece portion 37 of the unit main body 1 is detached. With the electrical component box 17 held in an inclined posture, the protrusion 38 provided on the upper side is pulled out from the slit 32 of the first inspection port 21 .

The extracted electrical component box 17 is turned so that the opening faces the blower chamber 10 side. Next, the temporary fixing hole 39 provided on the protruding part 38 is engaged with the hooking protruding part 35 provided on the lower bending piece 33 of the partition plate 8 . 22 and 23 , the electric component box 17 not only protrudes from the lower part of the unit main body 1, but also is hung on the protrusion 35 for hooking.

As shown in FIG. 24 , since a plurality of burring holes 36 as positioning holes are provided upward on the protruding portion 35 for hooking, when the protruding portion 38 of the electrical component box 17 is moved beyond the burring holes 36 Hook up after the inner side. Even if the electrical component box 17 tries to move inadvertently, the convex portion of the burring hole 36 restricts the movement and suppresses the risk of falling.

In this way, the electrical component box 17 completely opens the first inspection port 21, and wiring work and maintenance work can be easily performed. However, the electrical component box 17 moves only to the vicinity of the first inspection port 21 .

Therefore, after the above-mentioned work is finished, the temporary fixing hole 39 of the protruding portion 35 is pulled out from the protruding portion 35 for hooking, and the electrical component box 17 can be reinstalled until the first inspection port 21 is completely closed. at the specified location.

Since the temporary fixing position of the electrical component box 17 is located near the first inspection port 21, the reinstallation work of the electrical component box 17 can be easily performed, and operability can be improved.

As mentioned above, although this embodiment was described, the above-mentioned embodiment is only an illustration, and it does not intend to limit the scope of invention. These new embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the gist. These embodiments and modifications thereof are included in the scope or spirit of the invention, and are included in the invention described in the claims and the scope equivalent thereto.

(Symbol Description)

S building

U in the ceiling

1 unit body

12 blower

10 Blower room

18 Indoor heat exchanger

11 heat exchange chamber

8 partitions

21 First inspection port

22 Second inspection port

17 Electrical Parts Box

24 First cover

25 Second cover

20 Drain pump

27a, 27b Holes for wiring

32 slits

38 Projection for hooking

39 Temporary fixing hole

Claims (6)

1. an embedded type air conditioner, it is characterised in that include:

Unit main body, this unit main body is arranged in the ceiling of building；

Dividing plate, the inside division of described unit main body is heat exchange in the configuration supply fan room of pressure fan and disposed chamber by this dividing plate The heat-exchanging chamber of device；

First access hole and the second access hole, wherein, described first access hole be arranged on relative with described supply fan room described in The sidepiece of unit main body, described second access hole is arranged on the sidepiece of the described unit main body relative with described heat-exchanging chamber；

Electric part box, this electric part box can detachably embed described first access hole, and be positioned at described supply fan room, Electric controling part and control substrate are housed；And

First cover plate, this first cover plate can freely open, closes described first access hole with closing,

Described first cover plate has recess,

Described first access hole has towards the side depression formation contrary with the recess of described first cover plate and covers with described first The recess of plate across recess overlapping with gap,

In the state of close contact in the circumference making described first cover plate and described first access hole, make described first cover plate with By the diameter of the power line in described gap accordingly slidably.

2. embedded type air conditioner as claimed in claim 1, it is characterised in that

Described unit main body has hook at a lateral margin of described first access hole, at the lateral margin of the side contrary with this lateral margin There is near portion screw hole,

Described first cover plate has the size hook hole longer than described hook at a lateral margin, in the side contrary with this lateral margin Sidepiece has the fixing hole being made up of elongated hole,

Engage with described hook hole and screw is via described fixing hole loosely screwed described screw hole at described hook In the state of, free relative to described unit main body with the first access hole described in described first cover closure and described first cover plate Mobile.

3. embedded type air conditioner as claimed in claim 1 or 2, it is characterised in that

Can freely open, the back side of close described second access hole the second cover plate with closing draining pump is installed.

4. an embedded type air conditioner, it is characterised in that include:

Unit main body, this unit main body is arranged in the ceiling of building；

Dividing plate, the inside division of described unit main body is heat exchange in the configuration supply fan room of pressure fan and disposed chamber by this dividing plate The heat-exchanging chamber of device；

First access hole and the second access hole, wherein, described first access hole be arranged on relative with described supply fan room described in The sidepiece of unit main body, described second access hole is arranged on the sidepiece of the described unit main body relative with described heat-exchanging chamber；With And

Electric part box, this electric part box can detachably embed described first access hole, and be positioned at described supply fan room, Electric controling part and control substrate are housed,

Being provided with two distribution holes portion on described dividing plate, the two distribution hole portion is for for from being configured at described heat exchange The distribution that the electric component of room is connected in described electric part box is inserted,

The part in said two distribution hole portion is closed by the sidewall of described electric part box,

The distribution hole portion of the open area ratio the opposing party in the distribution hole portion of the side in the portion of said two distribution hole opens Open area is big.

5. embedded type air conditioner as claimed in claim 4, it is characterised in that the said two distribution length dimension phase in hole portion With the side in the portion of said two distribution hole is arranged towards described first access hole side skew.

6. an embedded type air conditioner, it is characterised in that include:

Unit main body, this unit main body is arranged in the ceiling of building；

Dividing plate, the inside division of described unit main body is to be configured with the supply fan room of pressure fan and be configured with Indoor Thermal by this dividing plate The heat-exchanging chamber of interchanger；

First access hole and the second access hole, wherein, described first access hole is arranged on the described unit at described supply fan room The sidepiece of main body, described second access hole is arranged on the sidepiece of the described unit main body at described heat-exchanging chamber；

Slit, this slit is disposed along the edge of described first access hole；And

Electric part box, electric controling part and control substrate are housed by this electric part box, and described electric part box has There is the teat can be inserted freely into, releasably engage with described slit, being embedded into described first access hole, and pass through spiral shell Nail is fixed on unit main body, thus is installed on described supply fan room,

Described unit main body is additionally provided with hook teat,

Being additionally provided with interim fixing hole portion on the described teat of described electric part box, this interim fixing hole portion can be with certainly It by hook, is releasably temporarily fixed on described hook teat.