JP6430169B2 - Air conditioner indoor unit - Google Patents

Description

  The present embodiment relates to an indoor unit of an air conditioner.

  An indoor unit of an air conditioner includes a heat exchanger inside, and air exchanged from the room is circulated through the heat exchanger to exchange heat, thereby obtaining an air conditioning effect. In recent indoor units, not only such an air conditioning function but also an additional function having a function of actively capturing and removing impurities contained in air sucked from the room has been proposed. In general, the air sucked from the room contains extremely fine dust, dust, pollen, germs, and the like (hereinafter collectively referred to as “dust”). Therefore, it is extremely effective to have a function of capturing and removing dust contained in the air sucked from the room by the indoor unit to clean the air.

  For example, an indoor unit of an air conditioner disclosed in Patent Document 1 includes a negative ion generator inside an indoor unit body. This negative ion generator has a negative ion electrode to which a high negative potential is applied, generates negative ions, and charges dust contained in air sucked from the room to a negative potential. On the other hand, the heat exchanger has conductivity, and a ground potential is applied as a counter electrode of the negative ion generator. Thereby, the heat exchanger sucks and captures dust charged to a negative potential.

  Further, the indoor unit configured as described above includes a control board storage unit that stores a control board on which electrical components that control the indoor unit are mounted. The control board storage unit is provided in the indoor unit main body. For example, it is installed on the right side of the heat exchanger as viewed from the front.

International Publication No. 2009/028634

  As described above, in the case where the control board storage unit is located on the right side of the heat exchanger when viewed from the front in the indoor unit main body, the horizontal length of the heat exchanger or negative ion generator In particular, since the length of the negative ion electrode in the left-right direction in the negative ion generator is limited, there is a problem that the dust collection efficiency cannot be improved.

  Therefore, by taking into account the location of the control board storage unit, the length of the negative ion electrode in the left-right direction in the negative ion generator can be increased, which in turn can improve the dust collection efficiency. Provide indoor units.

  The indoor unit of the air conditioner of the present embodiment includes an indoor unit body having a suction port on the upper surface part, a blower port on the lower surface part, and an air passage that allows communication between the suction port and the blower port inside, and the indoor unit The decorative panel provided on the front of the main unit and the air outside the indoor unit body that is provided in the ventilation path are sucked into the ventilation path from the suction port, and the air in the ventilation path is blown out of the indoor unit body from the outlet. A blower, an air filter that is provided in the ventilation path and captures dust in the air sucked into the ventilation path from the suction port, and is provided on the downstream side of the air filter in the ventilation path and has a high negative potential. A negative ion generator that has negative ion electrodes to which a voltage is applied and charges dust in the air flowing in the ventilation path to a negative potential, and is provided on the downstream side of the negative ion generator in the ventilation path; Have conductivity A heat exchanger for exchanging heat with the air flowing through the ventilation path while being applied with a ground potential as a counter electrode of the negative ion generator; and a control board housing portion containing a control board on which an electrical component is mounted and which controls the indoor unit . The negative ion generator is disposed opposite the front surface of the heat exchanger. The control board storage part was located in the front part of the indoor unit main body covered with the decorative panel, and was arranged with a space for air to flow between the back surface of the control board storage part and the front surface of the negative ion generator.

The indoor unit of the air conditioner which concerns on this embodiment is shown, the schematic perspective view in the state which open | released the decorative panel and removed the cover of the control board accommodating part and the communication adapter accommodating part Front view of the indoor unit with the decorative panel removed Longitudinal side view along line X3-X3 in FIG. Longitudinal side view along line X4-X4 in FIG. Transverse plan view along line X5-X5 in FIG.

  Hereinafter, an embodiment of an indoor unit of an air conditioner will be described with reference to the drawings. As shown in FIGS. 1 and 2, an indoor unit 1 of an air conditioner has a horizontally long box-like indoor unit body 2 with a horizontal width dimension that is longer than a vertical height dimension. 3 and FIG. 4, the heat exchanger 3 and the blower 4 are provided. The upper surface portion of the indoor unit body 2 is provided with a suction port 5 formed of an opening over substantially the entire upper surface. A blower outlet 6 including an opening is provided on the lower surface of the indoor unit body 2. Inside the indoor unit main body 2, a ventilation path 7 is formed to communicate between the suction port 5 and the blowout port 6.

  A filter support frame 9 that supports an air filter 8 (see FIGS. 3 and 4) is attached to the suction port 5. The filter support frame 9 has a curved shape that is convex upward in a side view, and is disposed in a form that covers the heat exchanger 3 from above to the front of the heat exchanger 3. The air filter 8 supported by the filter support frame 9 has air permeability and is detachably attached to the filter support frame 9. The air filter 8 is forward along the filter support frame 9 from above the heat exchanger 3. It is arrange | positioned in the form which covers the said heat exchanger 3 over. A gap is formed between the air filter 8 and the heat exchanger 3. In FIG. 1 and FIG. 2, the air filter 8 is omitted. The filter support frame 9 and the air filter 8 are also formed long in the left-right direction when viewed from the front.

  A decorative panel 10 (see FIG. 1) that opens and closes the front surface portion is attached to the front surface portion of the indoor unit body 2. The decorative panel 10 is made of, for example, a synthetic resin, and both left and right end portions are rotatably supported on the side surface portion of the indoor unit body 2.

  Two lower and upper louvers 11 are provided on the lower surface of the indoor unit body 2. The upper and lower louvers 11 have a rear end portion that is pivotably supported, and the front end portion is swung in the vertical direction to guide the wind blown from the outlet 6 in the vertical direction. In the indoor unit body 2, a plurality of left and right louvers 12 (only one is shown in FIGS. 3 and 4) are provided on the upper and rear sides of the upper and lower louvers 11. The plurality of left and right louvers 12 guide the wind blown from the blowout port 6 in the left-right direction by interlocking and swinging the tip portion in the left-right direction.

  The blower 4 is constituted by a cross-flow fan that is long in the left-right direction when viewed from the front, and is positioned above the blowout port 6 and is disposed at a substantially central portion of the indoor unit body 2. When the blower 4 is driven, the air outside the indoor unit body 2 is sucked into the ventilation path 7 from the suction port 5 and the air inside the ventilation path 7 is blown out of the indoor unit body 2 from the blowout port 6. .

  In this case, the heat exchanger 3 has a front side heat exchange part 13a and a rear side heat exchange part 13b, and these front side heat exchange part 13a and rear side heat exchange part 13b are connected at an upper part of the blower 4, It is arranged in a mountain shape when viewed from the side. In addition, the front heat exchanging portion 13a is bent at a front portion of the blower 4 and is curved in a “<” shape when viewed from the side. Similarly to the blower 4, the front heat exchange unit 13 a and the rear heat exchange unit 13 b are also formed long in the left-right direction when viewed from the front, and the front heat exchange unit 13 a and the rear heat exchange unit 13 b are arranged in the blower 4. Are arranged so as to cover from above and from the front.

  The front heat exchanging portion 13a and the rear heat exchanging portion 13b have a configuration in which a pipe 15 through which the refrigerant passes passes through a large number of fins 14 arranged in a facing state with a predetermined interval. In this case, each fin 14 is made of a conductive material such as aluminum. Therefore, the heat exchanger 3 is configured to have conductivity. The pipe 15 of the heat exchanger 3 is connected to a refrigeration cycle provided with a compressor (not shown).

  A negative ion generator 16 is attached to the back side of the filter support frame 9 so as to be positioned in front of the heat exchanger 3. The negative ion generator 16 includes an electrode support frame 17 made of a synthetic resin and a negative ion electrode 18 made of a metal plate attached to the back side of the electrode support frame 17, and is laterally viewed from the front. It is formed long. The negative ion generator 16 is disposed in the ventilation path 7 in the indoor unit body 2, downstream of the air filter 8 and upstream of the heat exchanger 3. A negative high potential (for example, −9 kV) is applied to the negative ion electrode 18 of the negative ion generator 16. And the heat exchanger 3 which has electroconductivity becomes a structure to which a grounding potential is applied as a counter electrode of the negative ion generator 16. In this case, the negative ion generator 16 and the heat exchanger 3 function as an air cleaner.

  As shown in FIGS. 1 and 2, a control board storage unit 20 and a communication adapter storage unit 21 are attached to the front side of the filter support frame 9. Among these, the control board storage part 20 is arranged at the center in the vertical direction when viewed from the front on the surface of the filter support frame 9 and to the right in the horizontal direction. The communication adapter storage portion 21 is disposed at the center in the vertical and horizontal directions when viewed from the front on the surface of the filter support frame 9. The control board storage unit 20 is disposed near the right side of the communication adapter storage unit 21.

  The control board storage unit 20 stores a control board 23 on which an electrical component 22 is mounted. The control board 23 has a control function for controlling the indoor unit 1. In this case, as shown in FIGS. 3 and 5, the control board storage unit 20 has a double structure of an outer case 24 made of metal, for example, aluminum, and an inner case 25 made of synthetic resin disposed in the outer case 24. It has become. The outer case 24 is composed of two parts, a base portion 24a and a cover portion 24b that is detachably attached to the base portion 24a. Therefore, the control board storage unit 20 is covered with the metal outer case 24. The inner case 25 is also composed of two parts, a base portion 25a and a cover portion 25b that is detachably attached to the base portion 25a. The control board 23 is attached to a base portion 25a made of synthetic resin.

  The communication adapter storage unit 21 is located on the left side of the control board storage unit 20 and is detachably attached to a base portion 26a made of synthetic resin and a front opening of the base portion 26a as shown in FIG. It consists of two parts, a synthetic resin cover 26b. In this case, the base portion 25a made of synthetic resin on the control board storage portion 20 side extends to the back side of the communication adapter storage portion 21 as shown in FIG. 5, and the base portion 26a of the communication adapter storage portion 21 is provided integrally. It has been. Therefore, the communication adapter storage unit 21 is composed of two parts, that is, a base part 26a that is a part obtained by extending the base part 25a that is a part to which the control board 23 is attached in the control board storage part 20, and a detachable cover 26b. ing.

  The communication adapter storage unit 21 and the control board 23 are electrically connected by a connection cable 27 (see FIG. 1). Both ends of the connection cable 27 have connectors for connection. In the control board 23, the connector 28 connected to the connector of the connection cable 27 is disposed on the left side, which is closer to the communication adapter storage unit 21. And in the communication adapter accommodating part 21, the communication adapter 29 for performing wireless communication with the external devices other than the indoor unit 1 of the air conditioner and the indoor unit 1 is detachably accommodated. In this case, as an external device, for example, various devices such as a refrigerator in a house in which the indoor unit 1 of an air conditioner is installed, a home appliance such as a television, an information terminal such as a personal computer, or a communication device can be considered.

  A switch storage unit 30 is provided on the right side of the communication adapter storage unit 21, and a switch board 32 on which an electrical component such as a reset switch 31 is mounted is stored in the switch storage unit 30. The communication adapter storage unit 21 and the switch storage unit 30 are configured to be simultaneously covered by the cover 26b of the communication adapter storage unit 21. The cover 26b is detachable with a single screw 33 (see FIG. 2). In this case, the control board storage unit 20 is disposed on the front surface of the indoor unit body 2 in the vicinity of the communication adapter storage unit 21, specifically, adjacent to the communication adapter storage unit 21 via the switch storage unit 30. Has been.

  Here, in FIG. 3, the control board storage unit 20 is positioned in front of the negative ion generator 16 and is disposed with a predetermined interval between the negative ion generator 16 and the front surface of the electrode support frame 17. ing. Further, the distance L1 between the negative ion electrode 18 in the negative ion generator 16 and the back surface of the control board storage unit 20 is the distance between the negative ion electrode 18 and the front surface of the front heat exchange unit 13a in the heat exchanger 3. It is set to be larger than L2 (L1> L2).

  When the decorative panel 10 is in the closed position, the control board storage unit 20 and the communication adapter storage unit 21 are also covered from the front by the decorative panel 10 (see the two-dot chain lines in FIGS. 3 and 4).

Next, the operation of the above configuration will be described.
When the operation of the indoor unit 1 is started, the blower 4 is driven and the heat exchanger 3 is moved in a state where the upper and lower louvers 11 located at the outlet 6 are rotated downward and the outlet 6 is opened. Is driven, and the negative ion generator 16 is energized.

  Among these, as the blower 4 is driven, indoor air outside the indoor unit body 2 is sucked into the ventilation path 7 from the suction port 5, and air in the ventilation path 7 flows from the outlet port 6 to the indoor unit body 2. It is blown out to the outside room. At this time, as the air passing through the ventilation path 7 exchanges heat with the heat exchanger 3, the cooled or heated air after the heat exchange is blown out from the outlet 6. At this time, relatively large dust contained in the air sucked into the ventilation path 7 from the suction port 5 is captured by the air filter 8.

  Further, in this case, a high negative potential (for example, −9 kV) is applied to the negative ion electrode 18 in the negative ion generator 16, and a ground potential is applied to the heat exchanger 3 as the counter electrode of the negative ion generator 16. The Based on this, negative ions are generated. Then, the generated negative ions charge the dust contained in the air flowing through the ventilation path 7 to a negative potential. The dust charged to a negative potential is attracted to and captured by the heat exchanger 3 maintained at a potential higher than the negative potential, in this case, the ground potential. Accordingly, fine particles of dust contained in the air flowing through the ventilation path 7 are also captured by the heat exchanger 3.

According to the above-described embodiment, the following operational effects can be obtained.
A negative ion generator 16 having a negative ion electrode 18 to which a high voltage of a negative potential is applied is provided in front of the heat exchanger 3, and the heat exchanger 3 is conductive and has a negative ion generator 16. A ground potential as a counter electrode is applied, and the negative ion generator 16 and the heat exchanger 3 function as an air purifier. For this reason, by the function of this air cleaner, the fine dust contained in the air which passes the ventilation path 7 can also be captured effectively.

  The control board storage unit 20 is positioned on the front surface of the indoor unit main body 2 covered with the decorative panel 10, and an interval in which air flows between the back surface of the control board storage unit 20 and the front surface of the negative ion generator 16 is provided. Arranged. According to this, compared with the case where the control board storage unit 20 is installed on the right or left side of the heat exchanger 3 in the indoor unit main body 2, the length in the left-right direction as viewed from the front of the negative ion generator 16 is increased. It becomes possible to lengthen the length. Thereby, the length of the negative ion electrode 18 in the left-right direction can be increased, and the dust collection efficiency can be improved. Further, as the area of the suction ventilation path on the back side of the control board storage unit 20 becomes smaller, the air velocity of the air passing therethrough increases, and the negative ion generator disposed on the back side of the control board storage unit 20 The air ventilation amount to 16 increases, and it becomes possible to improve air purification performance.

  The distance L1 between the negative ion electrode 18 in the negative ion generator 16 and the back surface of the control board storage unit 20 is greater than the distance L2 between the negative ion electrode 18 and the front surface of the front heat exchange unit 13a in the heat exchanger 3. Is set to be larger (L1> L2). According to this, although the outer case 24 of the control board storage unit 20 is made of metal, the discharge from the negative ion electrode 18 to the metal outer case 24 can be suppressed, and dust is collected in the outer case 24. And the dust collecting action on the heat exchanger 3 side can be enhanced.

  A filter support frame 9 that supports the air filter 8 is provided in front of the heat exchanger 3, and the negative ion generator 16 is attached to the back side of the filter support frame 9, and includes a communication adapter storage unit. 21 and the control board storage part 20 are attached to the surface side of the filter support frame 9. According to this configuration, the negative ion generator 16, the communication adapter storage unit 21 and the control board storage unit 20 are attached in advance to the filter support frame 9, and the filter support frame 9 is attached to the indoor unit body 2. By doing so, it becomes possible to improve the assemblability. Further, the distance L1 between the negative ion electrode 18 in the negative ion generator 16 and the back surface of the control board storage unit 20, and the distance between the negative ion electrode 18 and the front surface of the front heat exchange unit 13a in the heat exchanger 3. It becomes possible to easily and reliably maintain the distance relationship (L1> L2) of L2.

  The communication adapter storage unit 21 is located in the front part of the indoor unit body 2 that is opened and closed by the decorative panel 10 and is positioned in front of the heat exchanger 3 so that the center part of the indoor unit body 2 in the vertical direction and the horizontal direction when viewed from the front. Is arranged. According to this configuration, by opening the decorative panel 10, the communication adapter storage unit 21 is exposed at the center of the front surface of the indoor unit body 2, so that the communication adapter 29 is installed in the communication adapter storage unit 21. Workability can be improved. Further, since the communication adapter 29 is stored in the communication adapter storage unit 21 and there is no metal part or the like that hinders communication in front of the communication adapter 29, communication between the communication adapter 29 and an external device is not possible. It becomes possible to ensure performance.

  The communication adapter storage unit 21 includes a synthetic resin cover 26b covering the front opening of the communication adapter storage unit 21. According to this, since the communication adapter housing portion 21 is covered with the cover 26b, it is possible to prevent a user from inadvertently touching an electrical component such as the communication adapter 29 and to protect the communication adapter 29 from dust and the like. be able to. Further, since the cover 26b is made of synthetic resin, communication between the communication adapter 29 and the external device can be prevented. Furthermore, when the communication adapter 29 is not installed in the communication adapter storage unit 21, the connector for connecting the communication adapter in the communication adapter storage unit 21 can be protected from dust and the like.

  The control board storage unit 20 and the communication adapter storage unit 21 are disposed in the vicinity of the front surface of the indoor unit body 2. According to this, since the positions of the control board storage unit 20 and the communication adapter storage unit 21 are close, electrical connection between them can be easily performed. Moreover, since the length of the connection cable 27 that electrically connects them can be shortened as much as possible, there is also an advantage that it is difficult for noise to enter. In the present embodiment, the control board storage unit 20 and the communication adapter storage unit 21 are arranged so as to be adjacent to each other via the switch storage unit 30, but there is no switch storage unit 30 and communication with the control board storage unit 20 is performed. It is also possible to arrange the adapter housing portion 21 so as to be directly adjacent. Therefore, the fact that the control board storage unit 20 and the communication adapter storage unit 21 are disposed in the vicinity includes cases where there is a case where there is a switch storage unit 30 between them.

  As described above, the indoor unit of the air conditioner according to the present embodiment has the control board storage unit positioned on the front surface of the indoor unit main body covered with the decorative panel, and the back surface of the control board storage unit and the negative ions An air flow interval was placed between the front face of the generator. According to this, the length in the left-right direction seen from the front of the negative ion generator is made longer than the case where the control board storage unit is installed on the right or left side of the heat exchanger in the indoor unit main body. It becomes possible. Thereby, the length of the negative ion electrode in the left-right direction can be increased, and the dust collection efficiency can be improved.

  This embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is an indoor unit of an air conditioner, 2 is an indoor unit body, 3 is a heat exchanger, 4 is a blower, 5 is a suction port, 6 is a blowout port, 7 is a ventilation path, 8 is an air filter, and 9 is Filter support frame, 10 is a decorative panel, 13a is a front heat exchange part, 13b is a rear heat exchange part, 16 is a negative ion generator, 18 is a negative ion electrode, 20 is a control board storage part, and 21 is a communication adapter storage part. , 22 is an electrical component, 23 is a control board, 24 is an outer case (made of metal), 25 is an inner case (made of synthetic resin), 27 is a connection cable, 29 is a communication adapter, and 30 is a switch housing.

Claims (3)

An indoor unit main body having a suction port on the upper surface part, a blower port on the lower surface part, and an air passage that allows communication between the suction port and the blower port inside;
A decorative panel provided on the front surface of the indoor unit body,
A blower that is provided in the ventilation path and sucks air outside the indoor unit main body from the suction port into the ventilation path, and blows out air in the ventilation path from the outlet to the outside of the indoor unit body;
An air filter that captures dust in the air that is provided in the ventilation path and is sucked into the ventilation path from the suction port;
A negative ion electrode that is provided downstream of the air filter and is applied with a negative negative high voltage is charged in the air passage to charge negative dust in the air flowing in the air passage. A negative ion generator,
Heat exchange with air flowing in the ventilation path, provided on the downstream side of the negative ion generator in the ventilation path, having electrical conductivity and being applied with a ground potential as a counter electrode of the negative ion generator A heat exchanger to
A control board storage unit that stores a control board on which electrical components are mounted and controls the indoor unit,
The negative ion generator is disposed opposite the front surface of the heat exchanger;
The control board storage unit is positioned on the front surface of the indoor unit main body covered with the decorative panel, and an air flow interval is provided between the back surface of the control board storage unit and the front surface of the negative ion generator. An indoor unit of an air conditioner characterized by being arranged.   The distance between the negative ion electrode and the back surface of the control board housing part in the negative ion generator is set to be larger than the distance between the negative ion electrode and the front surface of the heat exchanger. The indoor unit of the air conditioner according to 1. A filter support frame is provided on the front side of the indoor unit main body so as to be positioned in front of the heat exchanger and detachably support the air filter,
The indoor unit of an air conditioner according to claim 1 or 2, wherein the negative ion generator is attached to a back surface side of the filter support frame, and the control board storage portion is attached to a front surface side of the filter support frame. .

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