JP4544419B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner (indoor unit), and more particularly to an air conditioner having a ventilation function for ventilating indoor air and outdoor air.

  In an air conditioner (indoor unit), generally, air sucked from an air suction port provided at the upper part is heat-exchanged to a predetermined temperature by a heat exchanger on the way, and air provided at the lower part by a crossflow fan It is structured to blow out from the air outlet toward the interior space.

  By the way, the room is often closed during use of the air conditioner. Therefore, if the user smokes or cooks indoors during use, the odor is likely to be trapped in the room and the user is likely to feel uncomfortable. Therefore, the user sometimes opens the window for ventilation, but if the window is opened, the cooled (or heated) air may escape to the outside.

  Thus, for example, an air conditioner has been proposed in which a ventilation unit is provided in a part of an indoor unit so that ventilation can be performed without opening a window. For example, Patent Document 1 discloses an air conditioner including a ventilation unit including an air supply passage and a ventilation passage in an upper portion of an indoor unit.

According to this, in the air conditioner operation also room air is ventilated at all times since the chamber is circulated fresh air, hard to remember extreme discomfort to the Riryo physical smoked cigarettes . In addition, the user is freed from work burdens such as opening windows.

  However, the air conditioner disclosed in Patent Document 1 has the following problems. That is, in this ventilation unit, it is necessary to open a drawing hole for pulling out the piping (power line, drain hose, etc.) for driving the air conditioner to the outside and two ventilation holes for the ventilation unit separately on the wall. The installation work is not only difficult, but it is difficult for residents in apartment buildings to use.

  Moreover, since the ventilation unit is installed in the upper part of the air conditioner, it is necessary to design the indoor unit itself for exclusive use, which increases the cost and the installation space. Further, since the fan of the ventilation unit is installed facing the front side of the indoor unit, the noise of the fan tends to leak into the room while the ventilation fan is driven.

JP-A-62-226843

  Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide an air conditioner having a ventilation function without increasing the size of an indoor unit.

In order to achieve the above-described object, the present invention has several features described below. First, the invention described in claim 1 has an air inlet and an air outlet, and a heat exchanger and a blower included in a refrigeration cycle in an air passage connecting the air inlet and the air outlet. There comprises an indoor unit casing disposed in an air conditioner ventilation unit replacing the indoor air is provided on one side surface of the heat exchanger in the indoor unit housing, the ventilation unit It includes an exhaust fan storage unit and an exhaust casing containing an exhaust passage path for exhausting indoor air communicating with the exhaust fan storage unit to the outdoor, outdoor air communicating with the air supply fan housing portion and the air supply fan housing section chamber and a supply air casing comprising supplying air supply communication path, the exhaust casing and the air supply casing, and their exhaust fan housing portion and the air supply fan housing section includes one of the side surfaces of the heat exchanger On a plane Juxtaposed me, and the exhaust passage and the aforementioned air supply passage are combined into so that the counter arranged across the partition wall, the said partition wall heat exchanger and the exhaust and supply air ventilation It is characterized in that a heat exchange means is provided.

Invention according to claim 2, in the first aspect, the side surface of the other side of the heat exchanger, electrical component box for controlling the above Symbol refrigeration cycle is supported, in the indoor unit casing It is characterized in that the air outlet is formed substantially at the center.

Invention of Claim 3 is provided with a pair of left and right heat exchanger holders for supporting the heat exchanger from both ends in the first or second aspect, and the ventilation unit is attached to one of the heat exchanger holders. The electrical component box is supported by one of the other heat exchanger holders.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the exhaust passage and the supply passage are formed in a U-shaped cross section having a bottom plate and a side plate rising from a side edge of the bottom plate. The bottom plate of one passage is used as the partition wall, and the open end side of the other passage is combined with the bottom plate of the one passage .

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the heat exchange means is made of a metal plate.

A sixth aspect of the present invention is characterized in that, in the fifth aspect , the metal plate is formed in a wave shape.

The invention according to claim 7, in any one of the above claims 1 to 6, the upper Symbol exhaust passage an exhaust port is provided an exhaust pipe is connected, the said air supply passage air supply pipe air supply ports connected is provided with, is characterized in that adjacent to the exhaust port and the intake port is the ventilation heat exchanger unit is provided.

According to the onset bright, by incorporating ventilation unit in the space next to the heat exchanger holder of the heat exchanger, the heat exchanger as long as the type of air conditioner for supporting the heat exchanger holder, in particular A ventilation unit can be incorporated without designing a special casing. Further, by supporting the electrical component box on the other heat exchanger holder, the indoor unit housing has a symmetrical structure, and as a result, an air outlet is formed in the center, and the design is neatly organized.

Further, by the supply passage is provided for taking fresh air in the exhaust passage and the outdoor for exhausting dirty air in the chamber to chamber to further heat exchange them air without changing the temperature of the room, the air Circulation can be performed.

In addition, a casing formed in a so-called U-shaped cross section having side walls extending substantially vertically from the both end edges of the bottom plate to the open end is made to match two open spaces by matching one open portion with the other open portion. Can be easily formed.

Also, by the part of the partition wall partitioning the supply air passage and the exhaust passage to a good metal plate thermal conductivity such as copper plate or aluminum plate, without using a dedicated heat exchanger, heat exchange with a metal plate can do. Moreover, heat exchange efficiency can be improved more by making a heat exchange board into a waveform and increasing a surface area.

Further, since the ventilation heat exchange means adjacent to the air supply and exhaust ports (heat exchanger) is disposed, for the supply air can immediately heat exchanger in the ventilation unit, and the air supply Heat exchange efficiency is good because heat exchange is possible with a high temperature difference in the exhaust. In addition, condensation in the ventilation unit can be prevented.

Next , embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an air conditioner (indoor unit) according to an embodiment of the present invention with a decorative panel removed.

  The air conditioner (indoor unit) 1 includes a base panel 100 that is attached to a wall surface via a mounting bracket (not shown), and a decorative panel 200 that is attached to the base panel 100 so as to cover from the upper surface to the front surface of the base panel. All are made of synthetic resin moldings.

  The base panel 100 is entirely formed in an L-shaped cross section, and stores a cross flow fan (not shown) as a blower fan, a heat exchanger unit 2, a drain pan (not shown), and the like. A pair of heat exchanger holders 3 and 3 for supporting the heat exchanger unit 2 are provided at both ends of the base panel 100, and the heat exchanger unit 2 is spanned between the heat exchanger holders. .

  In this example, the heat exchanger unit 2 is formed by connecting three heat exchanger units 21 to 23 in combination in a substantially lambda (Λ) shape, and is attached so as to cover the cross flow fan.

  The front side heat exchanger units 21 and 22 and the back side heat exchanger unit 23 are connected to each other by a wind shielding plate 24 at the top. The wind shielding plate 24 is provided to prevent the sucked air from bypassing the heat exchanger unit 2, and also functions as a filter guide for an air filter disposed at the upper part of the heat exchanger 2. Yes.

  Next to one heat exchanger holder 3 (right side in FIG. 1) of the base panel 100, there is provided an electrical component box 4 in which various power supply devices and electronic components for driving the indoor unit 1 are stored. Yes. Next to the other heat exchanger holder 3 (left side in FIG. 1) of the base panel 100, a ventilation unit 300 for ventilating indoor air is provided.

  On the lower surface side of the base panel 100, an air outlet 110 is formed for sending air toward the room by the blowing action of the cross flow fan. The air outlet 110 is provided with a diffuser (both not shown) that opens toward the floor during rapid heating or rapid cooling operation, for example, in addition to the upper and lower wind direction plates and the left and right wind direction plates for changing the air blowing direction. Good.

  A decorative panel 200 is attached to the base panel 100 so as to cover the heat exchanger unit 2. The decorative panel 200 is fixed to the upper end of the base panel 100 via a locking claw (not shown) provided on the rear end side, and configures the appearance of the indoor unit 1.

  According to this example, the decorative panel 200 is provided with an air inlet 210 over almost the entire surface. The air inlet 210 may be formed in a grill bar shape, and the opening area thereof is preferably larger than the upper projected area of the heat exchanger unit 2. An air filter (not shown) that captures dust in the air is detachably provided inside the air inlet 210 of the decorative panel 200.

  According to this, the electrical component box 4 and the ventilation unit 300 are relatively disposed on both sides of the base panel 100 with the heat exchanger 2 interposed therebetween, so that the air outlet 110 is formed in the center of the indoor unit 1. Thus, the indoor unit 1 has a symmetrical structure and can be neatly organized in terms of design.

  In the present invention, the configurations of the base panel 100 and the decorative panel 200 may be arbitrary as long as the heat exchanger 2 is supported by the heat exchanger holders 3 and 3, and specific configurations thereof are possible. Description of is omitted.

  Next, the ventilation unit 300 will be described with reference to FIGS. The ventilation unit 300 includes an exhaust unit 310 that exhausts a part of the air sucked from the air suction port 210 to the outside, and an air supply unit 330 that supplies the outdoor air to the room through the indoor unit 1. The ventilation unit 300 is made of a synthetic resin molded product.

  As shown in FIGS. 3 and 4, the ventilation unit 300 includes three casing members, an exhaust casing 320, an air supply casing 340, and a lid casing 350. The exhaust casing 320 and the air supply casing 340 are formed in a U-shaped cross section (a shape having side walls extending substantially vertically from both end edges of the bottom plate toward the open end), and the air supply casing 340 is formed at the bottom of the exhaust casing 320. By combining the open ends, an exhaust path and an air supply path are formed independently inside.

  The exhaust casing 320 includes a fan housing portion 322 in which the exhaust fan 360 is housed, an exhaust passage 323 through which the air sucked by the exhaust fan 360 passes, and an exhaust port 324 through which the air that has passed through the exhaust passage 323 is discharged. The exhaust passage is formed on one surface across the partition wall 50.

  The fan storage portion 322 is formed in a cylindrical shape that can store the exhaust fan 360, and an air inlet 325 is provided at the center thereof. The intake port 325 is formed coaxially with the rotation axis of the exhaust fan 360, and by driving the exhaust fan 360, a part of the air sucked from the air suction port 210 is sucked from the intake port 325.

  The exhaust fan 360 has a base plate 361 that is fitted along the periphery of the fan housing portion 322, and a drive motor 362 is integrally attached to the center of the base plate 361. A radial fan 363 is integrally attached to the rotation shaft of the drive motor 362. The fan storage portion 322 is closed by the base plate 361 to form a sealed space.

  One end of the exhaust passage 323 is opened at a substantially right angle toward the fan housing portion 322, and the other end extends downward along the partition wall 50 and is connected to the exhaust port 324. An opening 326 in which the ventilation heat exchanger 370 is accommodated is formed at substantially the center of the exhaust passage 323, and the exhaust side heat exchange chamber 371 of the ventilation heat exchanger 370 is stored therein.

  The exhaust port 324 is formed toward the back side (wall surface side) of the ventilation unit 300. A connection pipe 324a connected to an exhaust pipe (not shown) is connected to the exhaust port 324 via a joint member 324b.

  The fan storage portion 322, the exhaust passage 323, and the exhaust port 324 are recessed portions surrounded by side walls that stand vertically along the peripheral edge of the partition wall 50, and a sealed space is formed by covering the lid casing 350 thereon. It is formed.

  The lid casing 350 is made of a plate-like body attached along one side surface (left side surface in FIG. 3) of the exhaust casing 320. The lid casing 350 is provided with two port members 351 and 352 that match the exhaust port 324 and the air supply port 346, and each port member 351 and 352 matches the exhaust port 324 and the air supply port 346. Thus, a cylindrical shape is formed.

  Next, the air supply casing 340 has a fan storage part 342 in which the air supply fan 380 is stored, an intake passage 343 through which air sent out from the fan storage part 342 flows, and air toward the interior of the indoor unit 1. A discharge outlet 344 is provided. The air supply passage is formed on the other surface of the exhaust passage with the partition wall 50 interposed therebetween.

  The fan storage portion 342 is formed in a cylindrical shape that can store the air supply fan 380, and an air inlet 345 is provided at the center thereof. The air inlet 345 is formed coaxially with the rotation axis of the air supply fan 380 and communicates with the air supply port 346 for taking in outside air. By driving the air supply fan 380, the air sucked from the air supply port 346 is sucked into the air inlet 345.

As shown in FIG. 2, the exhaust-side intake port 325 is opened toward the back-side heat exchanger unit 23 with the top portion (wind shield plate 24) of the Λ-type heat exchanger 2 interposed therebetween. The air before passing through the back side heat exchanger unit 23 through the port 210 is sucked.

  The supply fan 380 has a base plate 381 that is fitted along the periphery of the fan housing 342, and a drive motor 382 is integrally attached to the center of the base plate 381. A radial fan 383 is integrally attached to the rotation shaft of the drive motor 382. The fan storage portion 342 is closed by the base plate 381 to form a sealed space. In this example, the air supply fan 380 and the exhaust fan 360 have the same shape and configuration.

  One end of the air supply passage 343 is connected to the fan housing chamber 342 of the air supply fan 380, and the other end extends upward along the partition wall 341 and is connected to the discharge port 344. In this supply passage 343, the intake side heat exchange chamber 372 of the ventilation heat exchanger 370 is stored.

  As shown in FIG. 2, the discharge port 344 is opened toward the front side heat exchanger unit 22 with the top portion (wind shield plate 24) of the Λ-type heat exchanger 2 interposed therebetween. According to this, the intake port 345 and the discharge port 344 are arranged separately on the front side and the back side across the top of the heat exchanger 2, so that the discharged air is directly sucked into the intake port 325. There is nothing.

  The intake casing 340 is used as a lid for closing the other surface of the exhaust casing 320 by being integrally attached to the other surface of the exhaust casing 320. At this time, a filter chamber 346 into which the air supply filter 347 is inserted is formed between the exhaust casing 320 and the air supply fan storage 342 of the air supply casing 340.

  The filter chamber 346 is formed with a predetermined width by a spacer 348 provided on the back surface (the side in FIG. 3) of the air supply fan storage portion 342 being in contact with the exhaust casing 320, and the air supply filter 346 can be inserted therein. It is attached with.

  As shown in FIG. 5, the heat exchanger 370 for ventilation is formed with two heat exchange chambers 371 and 372 with a partition plate 373 disposed in the center, and one heat exchange chamber 371 is on the exhaust side and the other is The heat exchange chamber 372 is on the air supply side. The ventilation heat exchanger 370 is made of a metal material having a high thermal conductivity such as aluminum, and each of the heat exchange chambers 371 and 372 is provided with a large number of heat exchange fins.

  According to this, heat is taken away from the air flowing through the exhaust side heat exchange chamber 371 by the fins, and the deprived heat is propagated from the fins to the other supply side heat exchange chamber 372 via the partition plate 373, Heat is exchanged with the air flowing through the air supply passage 343 from the fins on the heat exchange chamber 372 side.

  Referring to FIG. 2 again, three screw fixing portions 301 for attaching the ventilation unit 300 along the heat exchanger holder 3 of the heat exchanger 2 to the side surface (supply casing 340 side) of the ventilation unit 300. , 302, 303 are provided.

  On the other hand, the heat exchanger holder 3 is provided with three screw holes 31 to 33 corresponding to the screw fixing portions 301 to 303. By screwing them in a state where they are aligned with each other, ventilation is performed. A unit 300 is attached to the heat exchanger holder 3.

  The ventilation unit 300 is provided with guide ribs 304 as positioning means when attached to the heat exchanger holder 3. The guide rib 304 is formed in an L-shaped cross section and is formed along the end portion 121 of the panel side plate 120 of the base panel 100.

  According to this, the attachment positioning of the ventilation unit 300 can be easily performed by attaching the guide rib 304 of the ventilation unit 300 along the end portion 121 of the panel side plate 120.

  Finally, by connecting an exhaust pipe and an air supply pipe (both not shown) to the exhaust port 324 and the air supply port 326, all the piping can be drawn out to the outside with one wall hole.

  Next, an example of the ventilation procedure of the ventilation unit 300 will be described with reference to FIG. When a ventilation button provided on a remote controller or the like is operated while the air conditioner 1 is operating or stopped, a control unit (not shown) issues a drive start command to the ventilation unit 300.

  When the exhaust unit 310 receives a drive start command, the exhaust fan 363 of the exhaust unit 310 is activated. By driving the exhaust fan 360, a part of the air sucked from the air suction port 110 is sucked from the exhaust port 325.

  The air taken in from the exhaust port 325 is blown out in the radial direction from the center of the exhaust fan 360 and is introduced into the exhaust passage 323 as it is. At this time, heat is exchanged when passing through the exhaust-side heat exchange chamber 371 of the ventilation heat exchanger 370 provided in the exhaust passage 323.

  The heat-exchanged air flows through the exhaust passage 323 to the lower side of the ventilation unit 300 and is exhausted from an exhaust port 324 provided on the back side. Air exiting the exhaust port 324 is discharged to the outside through an exhaust pipe (not shown).

  When the other air supply unit 330 receives the drive command, the air supply fan 380 of the air supply unit 300 is activated, and outdoor air is sucked from an air supply port 326 connected to an air supply pipe (not shown).

  The air that has entered the air supply unit 310 from the air supply port 326 is first removed of dust contained in the air by the air supply filter 347 and taken into the air supply fan 380 from the air inlet 345.

  The air that has entered the air inlet 345 is blown out in the radial direction from the center of the air supply fan 380, and is directly introduced into the air supply passage 343. At this time, the air passing through the supply passage 343 is heat-exchanged with the exhaust-side air by passing through the supply-side heat exchange chamber 372 of the ventilation heat exchanger 370 provided in the middle.

  The heat-exchanged air is lifted up to the upper side through the air supply passage 343 and then discharged from the discharge port 344 toward the upper surface side of the front-side heat exchanger 32 of the indoor unit 1. The discharged air is heat-exchanged through the heat exchanger 3 and then blown out from the air outlet 110 into the room.

  Note that the ventilation procedure of the ventilation unit 300 may be performed while the indoor unit 1 is being driven, or may be performed while the indoor unit 1 is stopped. Further, only one exhaust unit 310 of the ventilation unit 300 may be driven, or only the air supply unit 330 may be driven.

  Next, a modified example of the ventilation unit 300 will be described with reference to FIGS. 7 and 8. In addition, the same referential mark is attached | subjected to the location considered to be the same as that of the said embodiment, or the description is abbreviate | omitted.

  In the ventilation unit 300, a part of the partition wall 50A (shaded portion in FIG. 7) that partitions the air supply passage 323 and the exhaust passage 343 is formed of a metal plate having a high thermal conductivity such as an aluminum alloy. In this example, the metal partition wall 50A is integrally molded with another synthetic resin housing, but may be attached with screws or the like.

  According to this, as shown in FIG. 8A, heat exchange is performed between the air flowing through the air supply passage 323 and the exhaust flowing through the exhaust passage 343 through the metal partition wall 50A. Heat exchange can be performed efficiently without providing a dedicated heat exchanger.

  Moreover, as a more preferable aspect, as shown in FIG.8 (b), it is good to make the partition plate 70B into a waveform. According to this, since the partition plate 70B has a wave shape, the surface area of the partition plate 70B increases, and the heat exchange efficiency can be further increased.

  In heat exchange, it is preferable that the temperature difference between the supply air and the exhaust is large. However, since the heat exchanging portion of the partition wall 50 (50A, 50B) is located at a substantially middle point between the exhaust passage 323 and the air supply passage 343, a part of the air supply and exhaust before reaching the heat exchange portion. There is a risk of heat exchange by the housing or the like. In addition, condensation may occur on the surface of the heat exchange unit 300.

  Therefore, as shown in FIG. 9, a ventilation heat exchanger 370 </ b> A is preferably provided adjacent to the exhaust port 324 of the exhaust passage 323 and the air supply port 326 of the air supply passage 343. The configuration of the ventilation heat exchanger 370A is basically the same as that of the heat exchanger 370 of the above-described embodiment.

  According to this, the outdoor air (supply air) and the indoor air (exhaust air) are heat-exchanged by the ventilation heat exchanger 370A adjacent to the exhaust port 324 and the air supply port 326. The temperature difference is large and the heat exchange efficiency is good. In addition, since the air supplied to the ventilation unit 300 can be immediately heat-exchanged, it is possible to prevent condensation on the surface of the ventilation unit 300.

  The present invention has been described above by taking the indoor unit of the split type and ceiling wall type air conditioner in which the outdoor unit and the indoor unit are separated as an example, but the present invention is not limited to this. The present invention includes, for example, a floor-rise air conditioner, an integrated air conditioner in which an indoor unit and an outdoor unit are housed in a single housing, a gas combustion air conditioner, and a hot water circulation air conditioner in terms of heat sources. It can be widely used for an air conditioner having an air filter such as a machine.

The disassembled perspective view of the air conditioner (indoor unit) which concerns on one Embodiment of this invention. The disassembled perspective view of the state which removed the ventilation unit from the indoor unit. The exploded perspective view of a ventilation unit. The exploded perspective view of a ventilation unit. Explanatory drawing for demonstrating the heat exchanger for ventilation. Operation | movement explanatory drawing explaining the ventilation path | route of a ventilation unit. Explanatory drawing explaining the 1st modification of a ventilation unit. (A) is explanatory drawing explaining the partition wall of the said 1st modification, (b) is explanatory drawing explaining the modification of a partition wall. Explanatory drawing explaining the 2nd modification of a ventilation unit.

1 Air conditioner (indoor unit)
2 heat exchangers 3, 3 heat exchanger holders 50, 50A partition wall 100 base panel 120 panel side plate 200 decorative panel 210 air inlet 300 ventilation unit 310 exhaust unit 320 exhaust casing 330 air supply unit 340 air supply casing 350 lid casing 360 Exhaust fan 370, 370A Ventilation heat exchanger 380 Air supply fan

Claims (7)

An indoor unit housing having an air inlet and an air outlet, in which a heat exchanger and a blower included in a refrigeration cycle are arranged in an air passage connecting the air inlet and the air outlet. , in the air conditioner ventilation unit replacing the indoor air is provided on one side surface of the heat exchanger in the indoor unit housing,
The ventilation unit includes an exhaust casing exhaust fan housing portion and including an exhaust passage path for exhausting the communicating room air to the outdoor to the exhaust fan storage unit, the outdoor communication with the air supply fan housing portion and the air supply fan housing section and a supply air casing comprising supplying air supply through passage of air into the room,
In the exhaust casing and the air supply casing, the exhaust fan storage portion and the air supply fan storage portion are juxtaposed along a plane including one side surface of the heat exchanger, and the exhaust passage and the air supply and the passage are combined into so that the counter arranged across the partition wall, characterized in that the said partition wall ventilation heat exchange means for the exhaust and supply air heat exchanger is provided Air conditioner. Characterized in that the side surface of the other side of the heat exchanger in the electrical component box for controlling the above Symbol refrigeration cycle is supported, the air outlet substantially in the center of the indoor unit casing is formed The air conditioner according to claim 1. The heat exchanger includes a pair of left and right heat exchanger holders that support the heat exchanger from both ends, the ventilation unit is supported by one of the heat exchanger holders, and the electrical component box is the other heat exchanger holder. The air conditioner according to claim 1, wherein the air conditioner is supported by the air conditioner. The exhaust passage and the air supply passage are formed in a U-shaped cross section having a bottom plate and a side plate rising from a side edge of the bottom plate. The bottom plate of one passage is used as the partition wall, and the other plate is connected to the bottom plate of the one passage. The air conditioner according to any one of claims 1 to 3, wherein the open ends of the passages are combined . The air conditioner according to any one of claims 1 to 4, wherein the heat exchange means is made of a metal plate. The air conditioner according to claim 5, wherein the metal plate is formed in a wave shape. The upper Symbol exhaust passage an exhaust port is provided an exhaust pipe is connected, the said air supply passage and air supply ports supply pipe is connected is provided adjacent to the exhaust port and the intake port the air conditioner according to any one of claims 1 to 6, characterized in that is provided above the ventilation heat exchanger unit Te.

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