JP3876864B2 - Indoor unit of air conditioner - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner attached to a wall surface in an air conditioning room.

  Some indoor units of a wall-mounted air conditioner include an ion generator for supplying negative ions into an air-conditioned room. The ion generator mainly includes an ion generation unit including a discharge electrode and a counter electrode, and a high voltage supply unit that supplies a predetermined voltage to the ion generation unit. Further, the wall-mounted indoor unit has at least a suction port formed in the front upper portion, a blowout port formed in the lower front portion, and a ventilation path formed in the indoor unit and connecting the suction port and the blowout port. It is comprised from the horizontally long substantially box-shaped casing, the heat exchanger arrange | positioned in the ventilation path, and the ventilation fan. The ion generator of the ion generator is arranged in the ventilation path or the outlet to cause the negative ions generated in the ion generator to accompany the air flow blown out from the outlet through the ventilation path into the air conditioning room. (For example, refer to Patent Document 1).

However, if the ion generating part is disposed in a place where the influence of the air flow is large, such as a ventilation path or an outlet, foreign substances such as dust are likely to adhere to the ion generating part. In addition, since the amount of air that passes through the ventilation path and is blown out from the outlet varies depending on the air conditioning operation load and operation control, the amount of ions generated in the ion generation unit becomes unstable due to this change.
JP 2003-156228 A

  An object of the present invention is to stabilize the amount of ions generated in an indoor unit of a wall-mounted air conditioner equipped with an ion generator.

An indoor unit of an air conditioner according to claim 1 is an indoor unit of an air conditioner attached to a wall surface in an air conditioning room, and includes a substantially box-shaped casing, a blower fan, and an ion generator. Yes. The casing has at least a suction port formed at the upper part of the front surface, an air outlet formed at the lower part of the front surface, and an air passage connecting the suction port and the air outlet inside. The blower fan is disposed in the ventilation path, sucks room air from the suction port, and blows it out from the blowout port. The ion generating device has an ion generating unit arranged at a position other than the ventilation path and the air outlet and arranged to discharge ions from the inlet .

  In the indoor unit of this air conditioner, since the ion generation unit is arranged at a position other than the ventilation path and the blowout port, the ion generation unit is not affected by the air flow flowing through the ventilation path and the blowout port. Can be generated. Thereby, the generation amount of ions can be stabilized.

  An indoor unit of an air conditioner according to a second aspect is the air unit according to the first aspect, wherein the ion generating part is arranged at a position away from the outlet.

  In the indoor unit of this air conditioner, since the ion generating part is arranged avoiding the position near the air outlet, the ion generating part is not affected by the air flow blown from the air outlet into the air conditioning room. Can be generated. Thereby, the generation amount of ions can be further stabilized.

  An indoor unit of an air conditioner according to a third aspect of the present invention further includes an electrical component box that is disposed on one side surface in the casing and on which various electrical components are mounted. The ion generating part is attached to the upper part or the front part of the electrical component box.

  In the indoor unit of this air conditioner, since the ion generator is attached to the upper part or the front part of the electrical component box arranged on one side of the casing, electric wiring for supplying voltage to the ion generator Thus, the workability of attaching the ion generating part can be improved and the cost can be reduced.

  According to a fourth aspect of the present invention, in the indoor unit of the air conditioning apparatus according to the third aspect, the ion generation device further includes a high voltage output unit that supplies a predetermined voltage to the ion generation unit. The high voltage output unit is provided in the electrical component box.

  In the indoor unit of this air conditioner, since the high voltage output unit is provided in the electrical component box, the entire ion generator can be integrated into the electrical component box, not only the ion generator, Improvement of workability and cost reduction of ion generator installation can be realized.

  The indoor unit of the air conditioner according to claim 5 is the position of the electrical component box arranged in one side of the casing when the casing is viewed from the front side. Extends to the side. Ions generated in the ion generator are released into the air-conditioning room from a portion on one side of the suction port.

  In the indoor unit of this air conditioner, ions generated in the ion generator are supplied to the air-conditioned room by using a part of the suction port. Is inconspicuous and the design is improved. Moreover, it is difficult for foreign matter such as dust to adhere to the ion generating part.

  As described above, according to the present invention, the following effects can be obtained.

  In the invention according to claim 1, since the ion generation part is arranged at a position other than the ventilation path and the blowout opening, the generation of ions in the ion generation part is not affected by the air flow flowing through the ventilation path and the blowout opening. Can be made to do. Thereby, the generation amount of ions can be stabilized.

  In the invention according to claim 2, since the ion generation unit is arranged avoiding the position near the blowout port, the ion generation unit is not affected by the air flow blown from the blowout port into the air conditioning chamber. Can be generated. Thereby, the generation amount of ions can be further stabilized.

  In the invention according to claim 3, since the ion generation part is attached to the upper part or the front part of the electrical component box arranged on one side of the casing, the length of the harness for supplying voltage to the ion generation part The length can be shortened, and the workability of attaching the ion generating part can be improved and the cost can be reduced.

  In the invention according to claim 4, since the high voltage output unit is mounted in the electrical component box, the entire ion generator can be integrated into the electrical component box, and not only the ion generator but also the ion It is possible to improve the workability of attaching the generator and reduce the cost.

  In the invention according to claim 5, since the ions generated in the ion generating part are supplied into the air-conditioned room using a part of the suction port, the ion discharge port is provided on the appearance of the indoor unit. It is inconspicuous and the design is improved. Moreover, it is difficult for foreign matter such as dust to adhere to the ion generating part.

  Hereinafter, embodiments of an indoor unit of an air conditioner of the present invention will be described with reference to the drawings.

(1) Appearance of Air Conditioner FIG. 1 is a diagram showing an appearance of an air conditioner 1 in which an embodiment of an indoor unit of an air conditioner according to the present invention is adopted.

  The air conditioner 1 includes an indoor unit 2 attached to a wall surface in an air-conditioned room, an outdoor unit 3 installed outside the room, and a refrigerant pipe 4 that connects the indoor unit 2 and the outdoor unit 3. Equipment / valves housed in the units 2 and 3 and the refrigerant pipe 4 are connected to form a refrigerant circuit.

(2) Refrigerant Circuit of Air Conditioner FIG. 2 is a diagram showing a schematic refrigerant circuit of the air conditioner 1. The refrigerant circuit mainly includes an indoor heat exchanger 21, an accumulator 31, a compressor 32, a four-way switching valve 33, an outdoor heat exchanger 34, and an expansion valve 35.

  The indoor unit 2 mainly has an indoor heat exchanger 21 and performs heat exchange with indoor air. In addition, the indoor unit 2 is provided with an indoor fan 22 for sucking indoor air and performing heat exchange with the indoor heat exchanger 21 and then blowing the air into the room. The indoor fan 22 has an elongated cylindrical impeller 22a provided with a plurality of blades on the outer peripheral portion, and a fan motor 22b that rotationally drives the impeller 22a. Air is passed in the direction intersecting the rotation axis. A crossflow fan that blows out. The detailed configuration of the indoor unit 2 will be described later.

  The outdoor unit 3 mainly includes a compressor 32, a four-way switching valve 33 connected to the discharge side of the compressor 32, an accumulator 31 connected to the suction side of the compressor 32, and the four-way switching valve 33. It has a connected outdoor heat exchanger 34 and an expansion valve 35 connected to the outdoor heat exchanger 34. The expansion valve 35 is connected to the liquid refrigerant pipe 41 via the liquid side closing valve 36, and is connected to one end of the indoor heat exchanger 21 via the liquid refrigerant pipe 41. The four-way switching valve 33 is connected to a gas refrigerant pipe 42 via a gas side closing valve 37 and is connected to the other end of the indoor heat exchanger 21 via the gas refrigerant pipe 42. The refrigerant pipes 41 and 42 correspond to the refrigerant pipe 4 in FIG. In addition, the outdoor unit 3 is provided with an outdoor fan 38 for sucking outdoor air as a heat source from the outside and exchanging heat with the outdoor heat exchanger 34 and then blowing it outside. The outdoor fan 38 has an impeller 38a having propeller-shaped blades and a fan motor 38b that rotationally drives the impeller 38a, and is a propeller fan that blows air in the rotation axis direction.

(3) Configuration of indoor unit <Overall configuration of indoor unit>
As shown in FIG. 1, the indoor unit 2 includes a substantially box-shaped unit casing 23 that is long in the lateral direction when viewed from the front, and the indoor heat exchanger 21 and the indoor fan 22 described above are units of the indoor unit 2. It is accommodated in the casing 23. The unit casing 23 is attached to a wall surface in the air-conditioning room via an installation plate 53. In the following description, “left” and “right” mean “left” and “right” in the front view of the indoor unit 2, respectively. The indoor unit 2 supplies negative ions into the air-conditioned room by ionizing the air and the electrical component box 81 on which various electrical components constituting the indoor unit 2 are mounted in addition to the devices constituting the refrigerant circuit. And a negative ion generator 71.

<Unit casing>
As shown in FIG. 1 and FIGS. 3 to 6, the unit casing 23 mainly includes a casing body 51 and a front panel 52. Here, FIG. 3 is a side view of the indoor unit 2. FIG. 4 is a side sectional view of the indoor unit 2. FIG. 5 is a view taken in the direction of arrow A in FIG. FIG. 6 is a diagram showing a state in which the front panel is removed in FIG.

  The casing body 51 is configured by combining an upper casing 54 and a lower casing 55 vertically. As shown in FIGS. 3 and 4, the upper casing 54 is disposed so as to cover the upper portion, the front portion, and the side portion of the indoor heat exchanger 21 having a substantially inverted V-shaped cross section when viewed from the side. The upper part of the unit casing 23 is configured. The lower casing 55 supports the indoor fan 22 disposed on the lower side of the indoor heat exchanger 21 and the electrical component box 81 disposed on the right side of the indoor heat exchanger 21, and also supports the indoor fan 22 and the electrical component box 81. The indoor heat exchanger 21 is fixed in a supported state, and constitutes the lower part of the unit casing 23.

The upper casing 54 is open on the lower surface side and the rear surface side, the lower surface side is closed by the lower casing 55, and the rear surface side is closed by the installation plate 53. A front surface 54a of the upper casing 54 is provided with an opening 54b including a plurality of lattice-shaped openings. The front of the opening 54b is covered with the front panel 52, so that air in the air-conditioned room sucked from the suction port 52a provided in the upper part of the front panel 52 is taken into the unit casing 23 through the opening 54b. It has become. The top surface 54c of the upper casing 54 is provided with a suction port 54d composed of a plurality of slit-shaped openings. Thereby, the air in the air-conditioned room is also drawn from the top surface 54c of the indoor unit 2. The opening 54b and the suction port 54d are provided with a suction filter (not shown) for removing dust contained in the air when the air in the air-conditioned room is sucked into the unit casing 23. . Further, an ion emission port 54e formed of a plurality of slit-shaped openings is formed on the front surface 54a of the upper casing 54 so as to correspond to the position of the electrical component box 81 stored in the unit casing 23 on the right side of the opening 54b. Has been. In addition, the ion emission port 54e is not located in the vicinity of the opening 54b, but is spaced from the right end of the opening 54b to the right. Specifically, the ion discharge outlet 54e is spaced its lateral direction length L ₁ or more spacing L _2. The ion discharge port 54e is an opening for discharging negative ions supplied from the negative ion generation device 71 into the air conditioning chamber through the right end portion of the suction port 52a.

  The lower casing 55 is open on the top surface side and the rear surface side, the top surface side is closed by the upper casing 54, and a part on the rear surface side is closed by the installation plate 53. On the front surface 55a of the lower casing 55, there is provided a blower outlet 55b having an elongated opening on the left and right. The blower outlet 55b is formed in the unit casing 23, and is connected to the inlets 52a and 54d via the ventilation path S which consists of the space in which the indoor heat exchanger 21 and the indoor fan 22 are accommodated. Thereby, the air in the air-conditioned room sucked from the suction ports 52a and 54d is introduced into the ventilation path S, passes through the indoor heat exchanger 21, is pressurized by the indoor fan 22, and is air-conditioned through the air outlet 55b. It has been blown into the room. In addition, the blower outlet 55b is provided with a louver 55c for changing the air direction of the air blown into the air-conditioned room. The lower casing 55 is modularized as a lower unit 56 together with various devices and piping including the indoor heat exchanger 21, the indoor fan 22, and the electrical component box 81.

The front panel 52 is attached to the front side of the casing body 51 so as to be positioned above the lower casing 55 in a front view, and constitutes the upper front of the indoor unit 2. The suction port 52a is provided in the upper part of the front panel 52, and consists of an elongated opening on the left and right. Here, the suction port 52a extends rightward to a position where the ion emission port 54e of the upper casing 54 is formed. That is, the length L ₃ in the left-right direction of the suction port 52 a is longer than the length L ₄ in the left-right direction of the opening 54 b formed in the front surface 54 a of the upper casing 54.

<Electrical component box>
As shown in FIGS. 3, 6, and 7, the electrical component box 81 is a box on which various electrical components constituting the indoor unit 2 are mounted. Here, FIG. 7 is a perspective view showing the electrical component box 81 and the negative ion generator 71. In this embodiment, the electrical component box 81 is provided with the lower box portion 82a having a substantially rectangular shape in a side view of the indoor unit 2 and the upper box portion 82b having a substantially L shape in a side view. The box body 82 is configured by doing so. A portion of the lower box portion 82a near the front surface 55a of the lower casing 55 is chamfered along the shape of the front surface 55a. A flat surface 82c is formed on the front side of the upper box portion 82b. The flat surface 82c is formed so as to correspond to the ion emission port 54e of the upper casing 54. Various electric components are mounted inside the box body 82.

<Negative ion generator>
The negative ion generator 71 mainly includes a negative ion generator 71a and a high voltage output unit 71b that supplies a predetermined voltage to the negative ion generator 71a. The negative ion generator 71a is a device including a discharge electrode, a counter electrode, and the like, and is disposed on the flat portion 82c. The high voltage output unit 71b is a device that converts power supplied from a control P plate or the like mounted on the electrical component box 81 into a predetermined voltage and supplies it to the negative ion generation unit 71a. It arrange | positions at the rear surface side of the generation | occurrence | production part 71a. The negative ion generating part 71a and the high voltage output part 71b are connected via an electrical wiring 71c including a lead wire, a ground wire and the like. The high voltage output unit 71b is connected to a control P board or the like mounted on the electrical component box 81 by electrical wiring (not shown).

  As described above, in the indoor unit 2 of the present embodiment, the negative ion generator 71a is not located in the airflow path S or the outlet 55b but in front of the electrical component box 81 in the unit casing 23. It is arranged at a place where there is no air flow, such as a portion (specifically, flat portion 82c). Moreover, since the negative ion generator 71a is disposed in the vicinity of the electrical component box 81, the distance of the electrical wiring 71c from the high voltage output unit 71b is short. Further, a high voltage output unit 71 b is provided in the electrical component box 81, and the entire negative ion generator 71 is integrated with the electrical component box 81.

(4) Operation of Air Conditioner Next, the operation of the air conditioner 1 will be described. When the air conditioning operation is started, the four-way switching valve 33 and the like are appropriately operated according to the operation mode such as the cooling operation and the heating operation, and the compressor 32, the indoor fan 22, and the outdoor fan 38 are activated. Thereby, the refrigerant circulates in the refrigerant circuit, and the air in the air-conditioned room is guided from the suction ports 52a and 54d to the ventilation path S in the unit casing 23 in which the indoor heat exchanger 21 and the indoor fan 22 are arranged. Then, the air guided to the ventilation path S is subjected to heat exchange in the indoor heat exchanger 21, and then is pressurized by the indoor fan 22 and blown out from the air outlet 55b into the air-conditioned room. Here, the air sucked from the suction port 52a is led to the ventilation path S after passing through the opening 54b.

  When the negative ion generating device 71 is operated during the air conditioning operation as described above, a predetermined voltage is supplied from the high voltage output unit 71b to the negative ion generating unit 71a, and discharge occurs at the electrode of the negative ion generating unit 71a. Arise. By this discharge, the air in the vicinity of the negative ion generator 71a is ionized to generate negative ions. Negative ions generated in the negative ion generator 71a are supplied into the air-conditioned room from the right end portion of the suction port 52a through the ion discharge port 54e. That is, most of the suction port 52a is used as a suction port for room air guided to the ventilation path S, and only the right end portion is used as a negative ion supply port.

  Thus, the negative ion generation part 71a is arranged not in a place where an air flow exists such as the ventilation path S or the outlet 55b but in a place where no air flow exists on the front side of the electrical component box 81. Furthermore, the place where the negative ion generation part 71a is arranged is a place that is not affected by the air flow blown into the air-conditioned room, such as in the vicinity of the outlet 55b. For this reason, in the negative ion generation part 71a, since it can generate | occur | produce a negative ion, without being influenced by the airflow like the ventilation path S and the blower outlet 55b, or the airflow blown into the air-conditioning room | chamber interior, a negative ion can be generated. The amount of generated is stable.

(5) Features of the indoor unit The indoor unit of the present embodiment has the following features.

(A)
In the indoor unit 2 of the air conditioner 1 of the present embodiment, the negative ion generator 71 has a negative position at a position other than the ventilation path S and the outlet 55b (specifically, the flat portion 82c at the front portion of the electrical component box 81). Since the ion generating part 71a is disposed, the negative ion generating part 71a can generate negative ions without being affected by the air flow flowing through the ventilation path S and the outlet 55b. . In addition, since the negative ion generator 71a is disposed at a position away from the air outlet 55b, the negative ion generator 71a receives negative ions without being affected by the air flow blown from the air outlet 55b into the air conditioning chamber. Can be generated. Thereby, the generation amount of ions can be stabilized.

(B)
In the indoor unit 2 of the air conditioner 1 of the present embodiment, the electrical component box in which the negative ion generator 71a of the negative ion generator 71 is disposed on one side surface (right side in the present embodiment) in the unit casing 23. 81, the length of the electrical wiring 71c for supplying a voltage to the negative ion generator 71a can be shortened, and the workability of attaching the negative ion generator 71a is improved and the cost is reduced. Can be realized.

  Further, since the high voltage output portion 71b of the negative ion generator 71 is provided in the electrical component box 81, the entire negative ion generator 71 can be integrated with the electrical component box 81, and negative ion generation is achieved. Improvement in workability and cost reduction of not only the portion 71a but also the negative ion generator 71 can be realized.

(C)
In the indoor unit 2 of the air conditioner 1 of the present embodiment, the ion emission port 54e is arranged so as to correspond to a part of the suction port 52a (in this embodiment, the right end of the suction port 52a), and minus Since negative ions generated in the ion generator 71a are supplied into the air-conditioned room using a part of the suction port 52a, the ion discharge port 54e is not conspicuous in the appearance of the indoor unit 2, and the design Improved. Moreover, it is difficult for foreign matter such as dust to adhere to the negative ion generating portion 71a.

(6) Other Embodiments While the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments and can be changed without departing from the scope of the invention. It is.

  For example, since the electrical component box 81 of the above embodiment is a tall box having the upper box portion 82b, the negative ion generating portion 71a is arranged at the front portion of the electrical component box 81. When using a low electrical component box, it may be arranged at the top of the electrical component box. Even in this case, the amount of negative ions generated in the negative ion generator 71a can be stabilized.

  Further, in the case where the tall electrical component box 81 as in the above embodiment is used, the negative ion generation part 71a may be arranged on the upper part of the upper box part 82b. Also in this case, since an ion discharge port having the same shape as the suction port 54d is provided on one side surface of the suction port 54d, the negative ion generation unit can be disposed away from the ventilation path S and the blower port 55b. The amount of negative ions generated in 71a can be stabilized.

  By using the present invention, the amount of ions generated can be stabilized in an indoor unit of a wall-mounted air conditioner equipped with an ion generator.

It is a figure which shows the external appearance of the air conditioning apparatus by which one Embodiment of the wall surface mounting structure of the indoor unit concerning this invention was employ | adopted. It is a figure which shows the schematic refrigerant circuit of an air conditioning apparatus. It is a side view of an indoor unit. It is side surface sectional drawing of an indoor unit. It is A arrow directional view of FIG. It is a figure which shows the state which removed the front panel in FIG. It is a perspective view which shows an electrical component box and a negative ion generator.

Explanation of symbols

2 indoor unit 22 indoor fan 23 unit casing 52a inlet 55b outlet 71 negative ion generator 71a negative ion generator 71b high voltage output unit 81 electrical component box S ventilation path

Claims (5)

An indoor unit (2) of an air conditioner attached to a wall surface in an air conditioning room,
A substantially box having at least a suction port (52a) formed in the upper front portion, a blowout port (55b) formed in the lower front portion, and a ventilation path (S) for connecting the suction port and the blowout port therein. Shaped casing (23);
A blower fan (22) that is disposed in the ventilation path and sucks indoor air from the suction port and blows out the blowout port;
An ion generator (71) having an ion generator (71a) arranged to discharge ions from the suction port at a position other than the ventilation path and the air outlet;
An indoor unit (2) of an air conditioner comprising:   The indoor unit (2) of the air conditioner according to claim 1, wherein the ion generation part (71a) is disposed at a position away from the air outlet (55b). It further includes an electrical component box (81) disposed on one side of the casing (23) and mounted with various electrical components,
The ion generator (71a) is attached to the top or front of the electrical component box,
The indoor unit (2) of the air conditioning apparatus according to claim 2. The ion generator (71) further includes a high voltage output unit (71b) for supplying a predetermined voltage to the ion generator (71a),
The high voltage output unit is provided in the electrical component box (81).
The indoor unit (2) of the air conditioning apparatus according to claim 3. The inlet (52a) extends laterally to the position of the electrical component box (81) disposed on one side of the casing when the casing (23) is viewed from the front side.
Ions generated in the ion generator (71a) are supplied from the portion on the one side surface of the suction port into the air conditioning room,
The indoor unit (2) of the air conditioning apparatus according to claim 3 or 4.

Images