CN101484759B - Indoor unit of air conditioning system - Google Patents

Abstract

An indoor unit body (2) of an air conditioning apparatus having an openable lower surface contains an electrical parts box (13), a heat exchanger (7), a drain pan (10), and an air blower (3) inside. A dress panel (3) closes the opening section of the lower surface of the indoor unit body (2). The drain pan (10) has first insert metal parts (24) for fixing the drain pan (10) to the indoor unit body (2) and second insert metal parts (25) for attaching and fixing the electrical parts box (13) to the drain pan (10). The first insert metal parts (24) and the second insert metal parts (25) are electrically connected and integrally formed with the drain pan (10).

Description

The indoor unit of aircondition

Technical field

The present invention relates to for example indoor unit of ceiling-embedded air conditioner, particularly at the improvement of ground structure that is used to reduce the noise terminal voltage of electric part box.

Background technology

In the indoor unit of general ceiling-embedded air conditioner, the indoor unit main body is made of with the thermal insulation barriers that is installed in this shell inner surface the housing of the sheet metal system of the roughly whole opening in bottom, and described sheet metal is by being processed to form sheet metal.Be provided with heat exchanger, pressure fan, drain pan (drain pan) etc. in the indoor unit body interior.

Install in the bottom of drain pan by the synthetic resin material and form and, on above-mentioned decoration panel, have blow-off outlet and suction inlet through beautifying the decoration panel that fine finishining is made.The shutter that blows out wind direction that limits heat exchange air is installed in blow-off outlet, in suction inlet, is embedded by the filter that sucks grill bearing.

Between drain pan and decoration panel electric part box is set, it holds and is used for electronic unit of electrically controlling indoor unit etc.Above-mentioned drain pan is for example formed by the foamed styrene material, the sheet metal goods of above-mentioned electric part box for sheet metal is processed.Therefore, can not directly electric part box be installed on the drain pan.

Imbed the insertion accessory of sheet metal system and make their integrally formed each other technology when for example, in TOHKEMY 2001-235176 communique, having put down in writing foaming at drain pan.The part of above-mentioned insertion accessory is outstanding from drain pan, at this outstanding position screwed hole is set.In addition, also disclose the insertion connecting portion has been set on electric part box, in these parts, inserted the technology that logical screw is fixed.

But,, therefore, need take to reduce the countermeasure of noise terminal voltage because above-mentioned electric part box is made and accommodated electric component by metalwork.In TOHKEMY 2001-235176 communique, there is not the record of the reduction of relevant noise terminal voltage, generally speaking, one end of lead is linked to each other with electric part box, and make its midway portion be positioned between drain pan and the decoration panel, the other end is led to the outside and ground connection of indoor unit, be formed for reducing the earthy wiring of noise terminal voltage.

In addition, the assembling work of the indoor unit opposite states that indoor unit is placed as and is installed on the ceiling is carried out.That is, make, insert in turn to inside from peristome pressure fan, heat exchanger, drain pan, electric part box are installed as be down above the housing of indoor unit main body and lower aperture portion is placed on the operation post lastly, last, decoration panel is installed.

Owing to when forming above-mentioned earthy wiring, electric part box has been installed, therefore, has been needed hand to insert an end of lead is linked to each other with electric part box from peristome.At this moment, need dodge pressure fan, heat exchanger and the drain pan installed, have between them to insert lead and power tool carries out operation, this very bothers.

In addition, an end of lead is linked to each other with electric part box, then this electric part box insertion is installed in the housing.Yet, in this state, worry that lead hangs down and is wrapped in pressure fan and the heat exchange etc. from electric part box, therefore requires efforts.Need draw the middle part around lead at the regulation position, in a word, no matter which all is the operation that very bothers.

Summary of the invention

Therefore, the object of the present invention is to provide the indoor unit of aircondition, the earthy wiring operation that is used to reduce the noise terminal voltage when not needing to carry out the indoor unit assembling can realize the raising of assembling work.

To achieve these goals, the indoor unit of the ceiling-embedded air conditioner of the present invention indoor unit body interior of opening below accommodates electric part box, heat exchanger, drain pan and pressure fan, cover peristome below the indoor unit main body by decoration panel, on drain pan, be provided for installing and fixing the second insertion accessory that first of drain pan inserts accessory and is used for installing and fixing with respect to drain pan electric part box with respect to the indoor unit main body, these first insertion accessories and second insert accessory under the state that is electrical contact with each other, and are integrally formed on the drain pan.

Description of drawings

Fig. 1 is the stereogram of indoor unit of the ceiling-embedded air conditioner of one embodiment of the present invention.

Fig. 2 is the stereogram that has decomposed the indoor unit main body of this embodiment.

Fig. 3 is the longitudinal sectional drawing of the indoor unit main body of this embodiment.

Fig. 4 is the plane of the indoor unit main body of the state that drain pan is installed of this embodiment.

Fig. 5 is the plane of this embodiment and then indoor unit main body that bell-mouthed state is installed.

Fig. 6 is the plane of the indoor unit main body of this embodiment and then state that electric part box is installed.

Fig. 7 is the partial perspective view of the indoor unit main body of the state that electric part box is installed of this embodiment.

Fig. 8 is the partial plan layout of the electric part box of this embodiment.

Fig. 9 is the partial perspective view of the electric part box of this embodiment.

Partial perspective view when Figure 10 normally uses for the horn mouth of this embodiment.

Figure 11 is the partial perspective view of the bell-mouthed slit portion of this embodiment when disconnecting.

Figure 12 is the partial perspective view of the bell-mouthed control of this embodiment when installing with electric part box.

The specific embodiment

Below, with reference to the accompanying drawings embodiments of the present invention are described.(be not shown in the component parts that is not endowed Reference numeral in the text description and constitute the position.In addition, also there is the situation of not giving component parts and constituting the part mark mark in loaded down with trivial details for fear of accompanying drawing)

Fig. 1 is the stereogram of the indoor unit 1 of ceiling-embedded air conditioner that one embodiment of the present invention is shown from below, and Fig. 2 is the exploded perspective view of indoor unit main body 2, and Fig. 3 is the profile of indoor unit main body 2.

The indoor unit 1 of aircondition comprises: indoor unit main body 2, and insert the installation peristome that is arranged on the ceiling floor from the indoor, and be fixed in the so-called ceiling back side via suspensions such as Hanging bolts; And decoration panel 3, be installed in this indoor unit main body 2 bottoms, and be exposed to the indoor from ceiling floor.

The whole openings of the lower face of above-mentioned indoor unit main body 2, portion and side surface part have the housing 4 of sheet metal system in the above, and described sheet metal forms by sheet metal is processed.Inner peripheral surface at this housing 4 is installed the thermal insulation barriers 5 that adopts moulding such as foamed styrene material, thereby indoor unit main body 2 forms heat insulation structural.

Central portion configuration pressure fan 6 in above-mentioned housing 4 inside surrounds this pressure fan 6 ground installation and overlooks the integrated indoor heat converter 7 that is square frame shape.As indoor heat converter 7, also can adopt by a pair of heat exchanger of overlooking the heat exchanger portion formation that is " L " font that forms.In the bight of indoor unit main body 2 drainage pump 9 is installed.

The lower aperture portion of above-mentioned housing 4 is covered by above-mentioned decoration panel 3.This decoration panel 3 for example can be by the synthetic resin forming materials and through beautifying fine finishining, and it is exposed to indoor from ceiling floor, and the installation of unit main body 2 side faces and ceiling floor is with the gap between the peristome in the covered chamber.

Above-mentioned pressure fan 6 comprises by suitable mode and is fixed on the housing 4 facial fan motor M and is installed in fan F on the rotating shaft of this fan motor M.Said fans F plays to follow to rotate and suck air and towards the multiple wing type fan of the air-supply effect that circumferentially blows out from the rotating shaft direction.

Above-mentioned indoor heat converter 7 is configured mutually opposed to each other with the blow-off direction (promptly circumferential) of fan F.The bottom of indoor heat converter 7 is inserted in the square frame shape drain pan 10 that is arranged in the housing 4, can receive the condensed water that produces when indoor heat converter 7 carries out heat exchange action.Above-mentioned drainage pump 9 is installed in the condensed water that is immersed in the drain pan 10.

Between decoration panel 3 and pressure fan fan F, be provided with horn mouth 12, surround by drain pan 10 around it.Horn mouth 12 is provided with: little and at the big tubaeform convergent part 12a of decoration panel 3 side diameters, the par 12b that is wholely set in convergent part 12a larger diameter side and at the slit portion 12c of the adjacent setting of par 12b one side at pressure fan fan F side diameter.

On the 12b of the par of above-mentioned horn mouth 12, electric part box 13 is installed.But this electric part box 13 comprises lower aperture and hold in inside be equipped with control with the casing 14 of the control substrate of electric component and freely openable cover the cover plate 15 of the lower aperture portion of this casing 14.Above-mentioned casing 14 and cover plate 15 are the processing metal thin plate and the sheet metal goods that obtain.

Larger diameter side at the convergent part 12a of horn mouth 12 is installed fan protector 16.By possessing this fan protector 16, even take off under the state of decoration panel 3 carrying out attended operation, the situation that hand directly contacts the fan F that constitutes pressure fan 6 can not take place yet, thereby guarantee security.

Above-mentioned decoration panel 3 possesses the panel body 3A that profile is a rectangle, offers rectangle suction inlet 17 at central portion.This suction inlet 17 is configured to and the roughly opposed area shape of the medial surface of above-mentioned drain pan 10, and, the suction grid 18 of supporting filter device can be installed with freely loading and unloading.

Above-mentioned suction grid 18 can keep the room air circulation at suction inlet 17 places, can hide the inside of housing 4 simultaneously again from suction inlet 17.When safeguarding, can dismantle simultaneously and suck grid 18 and filter, thereby can on indoor floor, clean filter and suction grid 18.

Air outlet 19 is provided with along each limit portion of above-mentioned suction inlet 17.With respect to width, each air outlet 19 forms the very elongated shape of length direction and is arranged on four positions.Each air outlet 19 is provided with towards the gap between the thermal insulation barriers of installing at drain pan 10 lateral surfaces and housing 4 medial surfaces 5, itself outwardly-bent formation.

The shutter R of louver body is installed, guiding heat exchange air blowing out on a large scale to decoration panel 3 peripheries on each air outlet 19.Peristome 20 is highly used in the adjustment that is respectively equipped with rectangle in four bights of panel body 3A, can be equipped with on these adjust highly with peristome 20 with freely loading and unloading and decorate gusset 21.

On the other hand, above-mentioned housing 4 is hung by 4 Hanging bolts that hang down from the beam that constitutes the ceiling back side.Specify, on the bight of housing 4 sides, install, Hanging bolt is inserted led to the deep hole d that on this hanging piece 22A, is provided with, and nut is screwed in the downside that this inserts logical part to the outstanding hanging piece 22A in the horizontal direction outside.

Like this, hanging piece 22A place nut above, housing 4 is hung by Hanging bolt 4 positions.In addition, by adjusting the screw thread binding site of nut, can adjust the suspension height of housing 4 with respect to Hanging bolt.Dismounting is decorated gusset 21 and is being adjusted highly with insertion instrument in the peristome 20, to carry out this operation.

Above-mentioned hanging piece 22A is made of the curved tabs portion of giving prominence to horizontal direction on the upper end of the fitment body 22 that forms roughly " コ " font.This fitment body 22 is installed on the housing 4 by modes such as spot welding.In addition, also have sheet portion in the bottom of fitment body 22, be referred to as to install and use accessory 22B to the horizontal direction bending.

Therefore, above-mentioned installation is integrally formed on the housing 4 with hanging piece 22A with accessory 22B.This installation is used for above-mentioned decoration panel 3 and above-mentioned drain pan 10 are fixed on housing 4 with accessory 22B, will their installation exercise be elaborated in the back.

The first insertion accessory 24 and second inserts accessory 25 part separately and exposes below drain pan 10.That is, first part of inserting the accessory 24 and the second insertion accessory 25 is bearing in the mould of drain pan 10, and in foaming, buries (insertion) underground in drain pan 10.

Above-mentioned first inserts accessory 24 is used for drain pan 10 is fixed on housing 4.Above-mentioned second inserts accessory 25 is used for horn mouth 12 and electric part box 13 are installed in drain pan 10.To their installation exercise be elaborated in the back.

In the indoor unit 1 of ceiling-embedded air conditioner,, room air is attracted to suction inlet 17 via sucking grid 18 and filter by driving pressure fan 6 with this structure.Afterwards, suck by horn mouth 12 guiding and from the rotating shaft direction of pressure fan 6, to circumferentially blowing out.

Circulate to carry out heat exchange in indoor heat converter 7 to the room air that circumferentially blows out, when refrigerating operaton, become cold wind, when heating operation, become warm braw.Guide this heat exchange air along the indoor heat converter 7 and the gap of thermal insulation barriers 5 and it is blown to indoor from a plurality of air outlets 19 that form at decoration panel 3.

Therefore, from the air conditioner indoor unit 1 that is installed in the aircondition on the ceiling floor to the indoor heat exchange air that evenly blows out, thereby can bring into play effectively indoor air-conditioning effect.

Below, the assembly structure of indoor unit main body 2 is elaborated.

Fig. 4 is for being installed in drain pan 10 plane of the state on the housing 4, and Fig. 5 be and then the plane of horn mouth 12 is installed, and Fig. 6 is and then the plane of installation electric part box 13, and Fig. 7 is the electric part box 13 shown in Figure 6 and the partial perspective view of periphery thereof.

In above-mentioned fitment body 22, upside hanging piece 22A installs with accessory 22B base end part separately with downside and forms mutually the same width dimensions and self setting opposed to each other mutually.On hanging piece 22A, be provided with Hanging bolt and insert general deep hole d, and installation uses the part of accessory 22B with outstanding with the opposed mode of this deep hole d.

Overlapping by the bight and the above-mentioned installation that make decoration panel 3 with the protuberance of accessory 22B, and hold-down screw is slotting logical and stubborn solid in the screwed hole of setting mutually, thus panel body 3 is installed on the housing 4.Therefore, the protuberance of installing with accessory 22 can not form the obstacle of hanging piece 22A with respect to the Height Adjustment operation of Hanging bolt.

The first insertion accessory 24 and the second insertion accessory 25 are respectively sheet metal are carried out the sheet metal goods that bending machining forms.As previously mentioned, when the foaming of drain pan 10, insert each and insert accessory 24,25 and their major part is embedded in the drain pan 10, and a part is exposed from drain pan 10 shown in Fig. 4～Fig. 6 section line.

Only first of the bight, bottom right of Fig. 4～shown in Figure 6 insert first in accessory 24 and other bight and insert accessory 24 and have difference on the shape and size.Except this first insertion accessory 24, it all is identical that accessory 24 shape and size are each other inserted in first of other bight.

Insert left side that accessory 25 only is installed in Fig. 4～shown in Figure 6 up and down on the position with second, and be not present in about the right side on the position.Fig. 7 only amplifies and has shown second side of inserting accessory 25 is installed.

First insert accessory 24 arbitrarily also with a part and above-mentioned hanging piece 22A and the opposed mode of base end part of installing with accessory 22B, outstanding laterally from the bight of drain pan 10.First protuberance that inserts accessory 24 is used under the corresponding state of base end part of accessory 22B with installation, and the screwed hole that is provided with is communicated with each other.

Logically twist admittedly in screwed hole separately by hold-down screw is inserted, make to be arranged on first on the drain pan 10 and to insert accessory 24 and be installed in the installation of housing 4 bottoms with on the accessory 22B.That is, as shown in Figure 4, drain pan 10 is fixed on the housing 4.

Insert accessory 24 in first of Fig. 4～bight, Fig. 6 bottom right and be provided with a pair of rectangle exposed division g discretely from the outstanding position of drain pan 10.Be provided with to the protuberance parallel-by-bit of other first insertion accessory 24 and drain pan 10 rectangle exposed division h.Be provided with hole portion on these exposed divisions g, h, this hole portion is for using the hole with the engaging that keeps first pin that inserts accessory 24 to engage when drain pan 10 foamings.

Insert on the accessory 24 in first of the top and the bottom, left side of Fig. 4～shown in Figure 6, have circular exposed division i in abutting connection with ground with rectangle exposed division h.As shown in Figure 7, on this exposed division i, be provided with hold-down screw 26.Said fixing screw 26 is used to make the protuberance that is arranged on the first insertion accessory 24 and the second insertion accessory 25 to interfix.

That is, in the inside of drain pan 10, first inserts accessory 24 and second inserts accessory 25 part separately and gives prominence to and overlap and closely contact.On these protuberances, be provided with the screwed hole that is interconnected, said fixing screw 26 inserted logical and stubborn solid at this place.Therefore, can firmly fix a part of respectively inserting accessory 24,25 each other.

Be installed in the upside of Fig. 4～shown in Figure 6 and insert accessory 25 to have changed on second of right side shown in Figure 7 with first mode of angle of inserting the installation direction of accessory 24.In addition, be installed in the downside of Fig. 4～shown in Figure 6 and insert accessory 25 along first installation direction that inserts accessory 24 in second of left side shown in Figure 7.

Like this, though two second insertion accessories 25 that use are different in the first installation attitude of inserting accessory 24 toward each other herein, but form with identical size shape.In addition, be provided with a plurality of screwed holes and insert at second exposed division that inserts accessory 25 and add the maintenance in man-hour and use the hole.

As shown in Figure 5, if make the par 12b of horn mouth 12 corresponding with the position that the second insertion accessory 25 of drain pan 10 exposes, the screwed hole that then is arranged on horn mouth par 12b is connected with second screwed hole that inserts accessory 25.By hold-down screw being inserted logical twisting admittedly in these screwed holes, horn mouth 12 can be fixed on the drain pan 10.

In this state, to insert screwed hole on the accessory 25 mutually opposed and greater than the through-hole part 27 of above-mentioned screwed hole diameter with being arranged on second possessing on the horn mouth 12.As Fig. 6 and shown in Figure 7, if make the casing 14 of electric part box 13 corresponding with 12b position, horn mouth par, then above-mentioned through-hole part 27 is mutually opposed with the screwed hole k on being arranged on casing 14.

Therefore, from the screwed hole k of casing 14,, hold-down screw is inserted logical and stubborn solid in the screwed hole of the second insertion accessory 25 via the through-hole part 27 of horn mouth 12.Thus, can casing 14 be installed on the drain pan 10 via horn mouth 12.In addition, screwed hole k is configured as step-like formation by casing 14 bottoms are shunk, and can increase the intensity of casing 14 bottoms.

Near the screwed hole k of casing 14, be provided with outstanding upward dodging and use teat m.These dodge with teat m for casing 14 is installed with horn mouth 12 tight state of contact under, be in and horn mouth 12 be installed in the second opposed position of hold-down screw head of inserting on the accessory 25.That is, can play the effect that what is called is dodged screw head.

By in casing 14, holding control with substrate and cover plate 15 is installed is assembled electric part box 13.Subsequently, fan protector 16 is installed, and as mentioned above, decoration panel 3 is installed on the indoor unit main body 2, form indoor unit 2 thus.This indoor unit 2 moved into erecting yard and hang and get final product by Hanging bolt.

As described above, insert on the accessory 25 because the electric part box 13 of sheet metal system adopts hold-down screw to be installed in second of sheet metal system, therefore, they are in the state that conducts each other.All be that first of sheet metal system is inserted accessory 27 and the second insertion accessory 25 is inserted in the drain pan 10 each other, and the contact of protuberance each other, electric conducting state be in.

In addition, these first protuberances that insert the accessory 24 and the second insertion accessory 25 are closely fixed by hold-down screw 26 each other.Therefore, each inserts accessory 24,25 and is inserted in the drain pan 10, and forms more reliable electric conducting state by hold-down screw 26 each other.

First installation of inserting accessory 24 and sheet metal system installs and fixes via hold-down screw with accessory 22B and is in the state that conducts each other.Because the bottom that is formed on the fitment body 22 of sheet metal system with accessory 22B is installed, and, form hanging piece 22A at an upper portion thereof, therefore, installation is in electric conducting state with accessory 22B and hanging piece 22A.

The fitment body 22 that will possess these hanging pieces 22A and install with accessory 22B is fixed on the housing 4 of sheet metal system, and integral body is in electric conducting state.Above-mentioned hanging piece 22A is hung by metal Hanging bolt and is in the state that conducts each other.Above-mentioned Hanging bolt is arranged on the beam that constitutes ceiling floor etc. and goes up and be in ground state.

Therefore, by unit main body in the assembly room 2 and installation decoration panel 3, indoor unit 1 is accomplished as product, if it is moved into the scene and hang on Hanging bolt, then must form the grounding path that inserts ground connection such as accessory 24,25, housing 4 and Hanging bolt from electric part box 13 via first, second.

Therefore, by adopting the structure as present embodiment, do not need the lead that is used to form the earthy wiring that reduces the noise terminal voltage in the past, thereby can reduce the parts expense, and can omit the operation that connects a wire to electric part box, thereby can improve operability, help reducing cost.

In addition, form separately, therefore, can change rigging position according to the styles design of drain pan 10 because the first insertion accessory 24 and the second insertion accessory 25 do not form one.That is, insert the accessories 24 and the second insertion accessory 25, then also applicable to the drain pan of other shape and structure if prepare a plurality of first.

Below, the casing 14 that constitutes electric part box 13 is elaborated.

Fig. 8 is the plane of the part of the casing 14 that will be contained in inner electric component and omit, and Fig. 9 is for being contained in the stereogram that inner electronic unit also is illustrated at the same area place of casing 14.

Electric part box 13 has formed and has compared the longer rectangle of length direction with width.Terminal disc base 28 is equipped with in bottom in casing 14 1 sides.Specify, terminal disc base 28 is mounted with the state from casing 14 bottoms to the oblique inclination of side, and has the gap between casing 14 bottoms and terminal disc base 28, forms double-decker.

Particularly as shown in Figure 9, a plurality of terminal discs 29 and cable holding appliance 30 etc. are installed on the terminal disc base 28 additional ground connection mark 31 on the mutual position of these installing components.In addition, the position is provided with the screw that is made of flange hole (burring) and inserts general hole 32 near ground connection mark 31, on casing opposed with it 14 bottoms above-mentioned screwed hole k is set.

In the bight of above-mentioned casing 14 and from installation site to casing 14 bottoms of terminal disc base 28 notch 33 is set.When casing 14 is installed, insert general hole 32 under the situation of careful toner screw, hold-down screw being inserted the try to get to the heart of a matter screw of seat 28 of terminal as long as take out this screw j from notch 33.

After hanging indoor unit main body 2 on Hanging bolt, the necessary height and position that is through with is adjusted operation, just takes off and sucks grid 18 and filter, and electric part box 13 is exposed.And then, remove the cover plate 15 of electric part box 13, the electric component that is contained in the casing 14 and terminal disc 29 etc. are exposed.

At least, above-mentioned terminal disc 29 is installed electric power use or the signal conductor terminal, and carry out the operation of electrical connecting wire on controlling with electric component.Though these operations are to carry out under the state of looking up electric part box 13,, by the seat 28 of trying to get to the heart of a matter with respect to the oblique inclination mounting terminal in casing 14 bottoms, can easily carry out operation, thereby can improve operation.

Below, horn mouth 12 is described.

When Figure 10～Figure 12 is respectively normal use, when slit portion disconnects and the partial perspective view of the horn mouth 12 of control when installing with electric part box.

As shown in figure 10, the above-mentioned slit portion 12c with rectangle cutting-in is set in above-mentioned horn mouth 12.If this slit portion 12c is applied to a certain degree powerful, then the part of horn mouth 12 can rupture, but does not still keep intact just often not rupturing.Air quantity when therefore, horn mouth 12 can be guaranteed to use.

For example, under situation about having selected, need append to install to possess and control the control electric part box 40 of using substrate option styles such as outdoor unit increase indoor unit quantity.At this moment, as shown in figure 11, above-mentioned slit portion 12c is applied to a certain degree powerful, remove the part (when slit portion disconnects) of end side from slit portion 12c.

In this state, on the extended line of par 12b, exist certain intervals and the parallel a plurality of ribs 35 that are provided with to expose.There is narrow and small gap between the leading section of these ribs 35 and the par 12b plate face,, can be pressed into lead 36 by rib 35 by lead 36 is inserted in this gap

As shown in figure 12, prepare as selecting with the control of keeping with electric part box 40, make its with rib 35 above the opposed while, the slit portion 12c after making it embed incision.And then, utilize hold-down screw, will control with shunt electric part box 40 by bolting and be fixed on (when control is installed with electric part box) on the horn mouth 12.

That is, the simple operation by slit portion 12c is disconnected need not to increase number of components, and the control electric part box 40 of selecting usefulness just can be installed.Above-mentioned rib 35 possesses at the control pedestal of spare parts kit 40 and the guidance part of lead 36, thereby can easily tackle the option style.

In addition, the invention is not restricted to above-mentioned embodiment, the implementation phase, can in the scope that does not break away from its aim, structural element be out of shape and specialize.And,, can form every invention by disclosed a plurality of structural elements in the above-mentioned embodiment are carried out appropriate combination.

Industrial applicibility

According to the present invention, the earthy wiring operation for reducing the noise terminal voltage when not needing to carry out the assembling of indoor unit can improve assembling work.

Claims (3)

1. the indoor unit of a ceiling-embedded air conditioner is characterized in that, possesses:

The indoor unit main body, lower aperture, and accommodate electric part box, heat exchanger, drain pan and pressure fan in inside;

Decoration panel covers the peristome below this indoor unit main body;

First inserts accessory, is arranged on the above-mentioned drain pan, is used for installing and fixing above-mentioned drain pan with respect to above-mentioned indoor unit main body; And

Second inserts accessory, is used for installing and fixing above-mentioned electric part box with respect to above-mentioned drain pan;

The above-mentioned first insertion accessory and above-mentioned second inserts accessory and is electrically connected to each other, and integrally formed with above-mentioned drain pan.

2. the indoor unit of ceiling-embedded air conditioner according to claim 1 is characterized in that,

Above-mentioned first inserts accessory and above-mentioned second inserts accessory part coincidence separately, and this coincidence position is fixed by hold-down screw.

3. the indoor unit of ceiling-embedded air conditioner according to claim 1 and 2 is characterized in that,

On the above-mentioned second insertion accessory, be mounted with horn mouth.

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