JP2013068332A - Indoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support structure capable of stably supporting an air cleaner that is a negative ion generator when the lateral dimension thereof is reduced.SOLUTION: The indoor unit for the air conditioner includes: an air passage which is formed in an indoor unit body and successively connects a suction port, an air filter, a heat exchanger, an indoor blower and an outlet port; a support frame assembly supporting the air filter; and an electric component box disposed adjacently to a side of the heat exchanger. The indoor unit further includes: an electric component box side cover which is provided at the air passage upstream side of the heat exchanger at a side of the electric component box; and an air cleaner which is temporarily held by hooking one end thereof on the electric component box side cover and then fixed at both the ends by sliding it in an anti-hooking direction to hook the other end on the support frame assembly.

Description

  The embodiment of the present invention relates to an indoor unit of an air conditioner including an air cleaner.

  Recently, air conditioner indoor units equipped with air purifiers are frequently used. This is provided with a negative ion generator that negatively charges dust contained in the air, and a ground potential is applied to the heat exchanger so that the negatively charged dust is captured and collected in the heat exchanger. Not only does it have an air-conditioning function, but it also increases the versatility by purifying the blown air.

  The charged particles that are not captured by the heat exchanger collide with the cross-flow fan of the indoor blower immediately after passing through the heat exchanger, so that the charged particles disappear. Charged particles are not emitted from the outlet, and wall contamination and the like can be prevented. Moreover, the dust adhering to the heat exchanger is naturally removed by an antifouling treatment for the heat exchanger, and is released to the outdoors together with the dew condensation water, so that it does not take time.

JP 2010-175201 A

  A suction port is provided over almost the width direction of the indoor unit main body, and a heat exchanger is provided over the entire width direction opposite to the suction port. The negative ion generator was initially provided over the entire width direction of the heat exchanger in order to apply negative ions to all the air sucked into the heat exchanger.

  However, recently, it has been found that it is not always necessary to provide an air cleaner as a negative ion generator over the entire width direction of the indoor unit body. That is, it is possible to apply negative ions to dust contained in the air sucked into the heat exchanger simply by disposing it facing one side of the heat exchanger.

  Therefore, it is desirable to have a support structure that can support the air purifier, which is a negative ion generator, in a widthwise direction without being unstable.

  In the present embodiment, a suction port, an air filter, a heat exchanger, an indoor blower, and an air passage that sequentially communicates the blowout port are formed in the indoor unit body, and a support frame assembly that supports the air filter, and the heat In an indoor unit of an air conditioner including an electrical component box adjacent to a side portion of the exchanger, an electrical component box side cover provided on the side of the electrical component box on the upstream side of the air flow path of the heat exchanger; A supporting piece projecting on the side of the electric component box side cover opposite to the electric component box side, and a front face of the supporting piece with a predetermined gap left and right. Temporary holding locking portion and fixing portion, engaging piece portion protruding from a side portion on the side cover side of the electrical component box and configured to slide and fit into the supporting piece portion, and the engaging piece Formed on the support portion and slid on the support piece. An engagement fixing portion that is engaged with the temporary holding locking portion and the fixing portion that are formed on the piece, and a side portion that is opposite to the side cover side of the electrical component box. An air purifier provided with a latching projection that slides and latches on a receiving arm formed in the support frame assembly, and the air purifier has one end on the side cover of the electric component box. Are temporarily held by engaging the engagement fixing portion with the temporary holding locking portion, and then slid in the counter-engagement direction to engage the other end portion with the support frame assembly. Both ends were fixed.

The longitudinal cross-sectional view of the indoor unit of the air conditioner based on this embodiment. The front view of the air conditioner main body of the state which removed the front panel based on the embodiment. The partial front view of the electrical component box side cover based on the embodiment. The figure which temporarily fixed the air cleaner to the electrical component box side cover based on the embodiment, wired the air cleaner and the electrical component box, and attached the wiring cover. The perspective view of the front part of the state which attached the air filter support frame based on the embodiment. The perspective view of the front one part state of the state which made the air cleaner slide according to the embodiment, and was attached to the attachment part of the air filter support frame. The positional relationship figure of an air cleaner and a wiring cover before sliding an air cleaner based on the embodiment. The positional relationship figure of an air cleaner and a wiring cover after sliding the air cleaner based on the embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
1 is a longitudinal sectional view of an indoor unit of an air conditioner, FIG. 2 is a front view of a state in which a front panel is removed from the indoor unit, and FIG. 1 is a longitudinal sectional view taken along line AA of FIG. is there.
A wall-hanging indoor unit K that constitutes an air conditioner together with an outdoor unit (not shown) is generally mounted at a height of a wall of a living room. The indoor unit main body 1 includes a front panel 2 that constitutes an outer casing on the front surface, upper surface, lower surface, and both left and right sides, and a rear main body 3 that constitutes the inside of the front panel 2 and a casing on the rear portion.

  The front surface of the front panel 2 and both left and right side portions (not shown) are shielded by the panel. Further, a suction port 4 is opened in the upper surface portion of the front panel 2 and is always open. An opening for the blowout port is formed at the lower front portion of the front panel 2.

  A support frame assembly 6 is formed on the front surface of the rear body 3. The support frame assembly 6 has an upper surface formed in a frame shape and has a shape area that coincides with the suction port 4 of the front panel 2. The support frame assembly 6 is provided with an opening having the same area as the opening for the outlet of the front panel 2 at the lower front part. The support frame assembly 6 is formed integrally with the front panel 2 or separately and independently.

A vertical rail 7 is provided in the center of the front surface of the support frame assembly 6. The left and right sides of the vertical beam 7 are opened, and the left and right air filters F are detachably supported. (The air filter F is not shown in FIG. 2)
The air filter F has a mesh shape, and its lower end is supported by a receiving portion provided along the lower end of the support frame assembly 6. The upper end portion of the air filter F is inserted into an insertion portion provided along the upper end portion of the support frame assembly 6, and thus the air filter F is supported by the support frame assembly 6.

The support frame assembly 6 supports one side portion of an air cleaner S described later, and the other side portion of the air cleaner S is supported by an electric component box side cover 8 described later. F covers the front surfaces of the air cleaner S and the electrical component box side cover 8.
Further, the rear main body 3 supports a heat exchanger 9 and an indoor blower 10 and is provided with an outlet 5. When the indoor blower 10 is driven, a blower passage 12 is formed in the indoor unit main body 1 to sequentially communicate the suction port 4, the air filter F, the heat exchanger 9, the indoor blower 10, and the blowout port 5.

  The heat exchanger 9 is formed in a substantially inverted V shape by a front heat exchanger portion 9A and a rear heat exchanger portion 9B. The front heat exchanger portion 9A is formed in a curved shape, and the rear heat exchanger portion 9B is straight and inclined obliquely. The heat exchanger 9 communicates with a compressor, an outdoor heat exchanger, and the like housed in an outdoor unit (not shown) via a refrigerant pipe, and these constitute a refrigeration cycle.

  An indoor fan 10 is disposed between the front and rear heat exchanger portions 9A and 9B of the heat exchanger 9. The indoor blower 10 includes a fan motor disposed in a space at one end of the indoor unit body 1 and a cross-flow fan connected to a rotation shaft of the fan motor. The length of the cross flow fan in the axial direction is set to be the same as the length of the heat exchanger 9 in the width direction, and is arranged so as to face each other correctly.

  The lower end portion of the front heat exchanger portion 9A is placed on the front drain pan 13a, and the lower end portion of the rear heat exchanger portion 9B is placed on the rear drain pan 13b. The front and rear drain pans 13a and 13b are formed integrally with the rear main body 3, respectively, and drain water dripped from the front and rear heat exchanger portions 9A and 9B can be drained to the outside through a drain hose (not shown).

  The blowout port 5 is provided with an up / down air direction adjusting plate 14a, and a left / right air direction adjusting plate 14b is provided in the air passage 12 located in the back. The up-and-down air direction adjusting plate 14a can open and close the blow-out port 5 according to the rotation posture and set the blow-out direction of the heat exchange air according to operating conditions. The left / right wind direction adjusting plate 14b performs a so-called swing motion.

  The support frame assembly 6 is bent with a gap from the front face of the front heat exchanger section 9A, and the air filter F is also supported in a bent state along the front face of the front heat exchanger section 9A. The Further, the support frame assembly 6 is bent to face the upper surface of the rear heat exchanger section 9B with a gap, and the air filter F also has a gap on the upper surface of the rear heat exchanger section 9B. It is supported in a state of being bent so as to face each other.

  An electrical component box 15 is arranged side by side at a position adjacent to one side (right side) of the heat exchanger 9. The support frame assembly 6 covers a part of the front surface of the electrical component box 15 and the electrical component box side cover 8, and the panel surface is provided up to one side of the support frame assembly 6. Only the caution part 15a of the electrical component box 15 has the panel surface cut off so that the caution notice can be read.

  The electric component box 15 controls the heat exchange action of the heat exchanger 9 and switches the refrigeration cycle operation. Furthermore, the electrical component box 15 accommodates control electrical components that control the driving of the indoor blower 10, and also accommodates components that electrically control the air cleaner S and other electrical components.

Usually, the air conditioner indoor unit is divided into two parts, the heat exchanger is divided into two, and a dehumidifying valve is interposed in the middle of the refrigeration cycle, and a dehumidifying operation by reheating action and a weak cooling without a dehumidifying valve There are models that perform dehumidifying operation by operation. These models are composed of an indoor unit body having the same housing structure for sharing.
The dehumidifying valve is provided at a position that bisects the refrigerant flow path formed in the heat exchanger 9. During cooling operation and heating operation, it is fully open and does not have any effect, but during dehumidification operation, it becomes an expansion valve that throttles the refrigerant flow path, so that the heat exchanger 9 is divided into a heat exchanger and a reheater. Break down.

  The electrical component box side cover 8 is made of, for example, a synthetic resin component, has electrical insulation, and has a vent hole on the front surface. Originally, a dehumidifying valve is attached to the front side or the side of the heat exchanger 9 at the side of the electrical component box 15. And the front part in which this dehumidification valve is arrange | positioned is covered with the said electrical component box side cover 8. FIG.

  The electrical component box side cover 8 acts so that drain water generated on the surface of the dehumidifying valve flows down to the front drain pan 13a disposed at the lower part without dripping from the front side of the indoor unit into the room. This is to protect the hand from touching the side surface of the electrical component box 15 from the front side.

Here, an embodiment in which a dehumidifying valve is not provided is shown, and the electrical component box side cover 8 covers the left side portion of the electrical component box 15 with the front panel 2 opened. As described above, the one end side of the electric component box side cover 8 is arranged so as to be close to the end of the electric component box 15 on the heat exchanger 9 side, and the support frame assembly is arranged so that the surface is aligned with the front surface of the electric component box 15. 6 is supported.
The front surface of the electrical component box 15 is protected by the panel surface of the support frame assembly 6, and the right side surface portion of the electrical component box 15 is protected by the right side surface portion of the front panel 2.

  One side of the air purifier S is supported on the side of the electrical component box side cover 8 opposite to the electrical component box 15 side. The other side portion of the air cleaner S is supported by a receiving arm portion 17 provided integrally with the support frame assembly 6. The support structure for the air cleaner S will be described later.

  The air cleaner S is a negative ion generator that generates negative ions. Hereinafter, the air cleaner is referred to as a negative ion generator S. On the other hand, the ground potential is applied to the heat exchanger 9 as a counter electrode of the negative ion generator S.

  That is, the heat exchanger 9 has conductivity, and the fins of the front heat exchanger 9A and the rear heat exchanger 9B constituting the heat exchanger 9 are selected from conductive aluminum materials. The The front and rear heat exchanger sections 9A and 9B are connected to the ground potential so that the same potential as that of the counter electrode of the negative ion generator S is applied.

  The negative ion generator S is disposed in front of the front heat exchanger portion 9 </ b> A constituting the heat exchanger 9 with a gap between them, and in the air passage 12, upstream of the air passage 12 of the heat exchanger 9. Located on the side. On the other hand, the air filter F is located upstream of the air passage 12 of the negative ion generator S, and the heat exchanger 9 is arranged downstream of the air passage 12 of the negative ion generator S. .

The operation of the indoor unit of the air conditioner configured as described above will be described.
When the air conditioning operation start signal such as the cooling operation or the heating operation enters the control unit from the remote controller, the refrigeration cycle operation is started and a drive signal is sent to the indoor blower 10. Further, the vertical air direction adjusting plate 14a is rotated in a posture adapted to the air conditioning operation, and the outlet 5 is opened.

  The room air is sucked into the indoor unit body 1 from the suction port 4 and guided along the air blowing path 12. First, the air filter F is circulated, and dust contained in the room air is captured. Some dust passes through the air filter as it is, but negative ions are charged by the negative ion generator S here.

  And it is guide | induced to the front side heat exchanger part 9A and the back side heat exchanger part 9B which comprise the said heat exchanger 9. FIG. A ground potential is applied to the front and rear heat exchanger sections 9A and 9B, and dust charged with negative ions is adsorbed. The cleaned indoor air exchanges heat with the heat exchanger 9, and the indoor air becomes cold if the cooling operation mode is selected, and changes to warm if the heating operation mode is selected.

  The heat exchange air is guided along the blower air passage 12 and is guided from the blowout port 5 to the left / right airflow direction adjusting plate 14b and the up / down airflow direction adjusting plate 14a to be blown into the room. When the cool air is blown out into the room, the room temperature is lowered and the air is cooled. When the warm air is blown into the room, the room temperature rises and performs a heating action.

  In any case, when the indoor air sucked into the indoor unit body 1 flows through the air filter F, the negative ion generator S, and the heat exchanger 9, all dust contained in the indoor air is captured. Cleaned heat exchange air is always blown into the room to clean the room.

Next, a support structure for the negative ion generator S will be described.
FIG. 3 is an enlarged view of a part of the electrical component box side cover 8. FIG. 4 is a view showing a state in which one side portion of the negative ion generator S is attached to the electrical component box side cover 8 and temporarily held.

  As shown in FIG. 3, a supporting piece 20 is integrally provided on the side of the electrical component box side cover 8 opposite to the electrical component box 15. The supporting piece 20 is a small protruding piece of substantially the same size in the vertical and horizontal directions that protrudes from a substantially central portion in the vertical direction of the electrical component box side cover 8. The front and rear thickness dimensions are secured to some extent, and screw holes 21 as fixing portions and protrusions 22 as temporary fixing locking portions are provided on the front surface with a predetermined gap between them.

As shown in FIG. 4, one side portion of the negative ion generator S is supported by the supporting piece portion 20 of the electric component box side cover 8.
That is, the negative ion generator S is composed of an electrode part Sa and a power supply part Sb that is connected to and electrically connected to the electrode part Sa, and the electrode part on the side opposite to the electrical component box side cover 8. A latching projection 23 projects laterally on the side of Sa, and an engagement piece 24 projects laterally on the side of the power supply Sb on the side of the electrical component box side cover 8. .

  The electrode portion Sa includes a negative ion generating electrode and a counter electrode that is a wire-like ground electrode, and the negative ion generating electrode and the counter electrode are attached to an electrode case (both not shown), and are used to hold the cover. 25 covers and protects.

  The negative ion generating electrode has a plurality of needle electrodes protruding in a direction perpendicular to the longitudinal direction with a predetermined interval along the longitudinal direction. The counter electrode is, for example, in the form of a wire, has the same overall length as the negative ion generating electrode, and only the both side end portions are attached to and supported by the electrode case.

  The electrode case retains its strength and has a shape capable of efficiently discharging negative ions from the negative ion generating electrode. The presser cover 25 presses the counter electrode against the electrode case and regulates deformation such as loosening of the counter electrode. In particular, since a high voltage is applied to the negative ion generating electrode, the electrode case and the presser cover 25 are made of ABS resin, which is a flame-retardant resin.

  An end portion of the electrode portion Sa in which the negative ion generating electrode and the counter electrode are attached to the electrode case is inserted and fitted into a connecting portion protruding from the side surface of the power source portion Sb, so that the electrode portion Sa and the power source The part b is electrically connected, and the negative ion generator S is assembled integrally.

  On the side of the electrode part Sa opposite to the power source part Sb, the hooking projection 23 is projected, which is hooked on a receiving arm part 17 (to be described later) of the support frame assembly 6. To do. The engaging piece 24 protrudes from a side of the power supply Sb opposite to the electrode Sa.

  The engagement piece 24 is shaped to slide into the front surface of the support piece 20 provided integrally with the side portion of the electric component box side cover 8. However, the axial length is about half of the axial length of the support piece 20, and a space for the support piece 20 to enter the power supply Sb is secured.

  Further, the engagement piece 24 is provided with a hole 26 which is an engagement fixing portion. When the negative ion generator S is temporarily held, the hole 26 is provided in the support piece 20. The protrusion 22 is fitted and engaged. That is, before attaching the support frame assembly 6, the electrical component box 15 and the electrical component box side cover 8 are attached to predetermined positions, and then the negative ion generator S is placed on the supporting piece 20 of the electrical component box side cover 8. The engaging piece 24 is fitted.

  Specifically, the engaging piece 24 that protrudes from the power source Sb of the negative ion generator S is fitted into the supporting piece 20 of the side cover 8 of the electrical component box, and once the hole 26 of the engaging piece 24 is supported. It fits into the projection 22 of the piece 20 for locking. As a result, the position of the negative ion generator S does not change easily during wiring work, and it can be temporarily held securely.

  In this state, a lead wire (not shown) is drawn out from the power source Sb, extended into the electrical component box 15 through the upper back side of the electrical component box side cover 8, and electrically connected to predetermined electrical components in the box. To do. At this time, the lead wire that electrically connects the electrical component box 15 and the power source Sb of the negative ion generator S is slackened so as to maintain a sufficient margin.

Then, a wiring cover 27 that protects the surface of the lead wire is attached between the electrical component box 15 and the negative ion generator S. The wiring cover 27 is attached to the gap between the electrical component box side cover 8 and the heat exchanger 9.
After the negative ion generator S is temporarily held on the electric component box side cover 8, the support frame assembly 6 is attached to a predetermined position.

FIG. 5 is a partial external view of the indoor unit main body 1 in a state where the negative ion generator S is temporarily held on the side cover 8 of the electric component box and then the support frame assembly 6 is attached to the rear main body 3.
In the support frame assembly 6, the receiving arm portion 17 is formed. The receiving arm portion 17 has a hole portion facing the hooking projection portion 23 protruding from one side portion of the negative ion generator S temporarily held. In this state, as shown by an arrow in the figure, the negative ion generator S is slid to the left in the figure.

FIG. 6 is a partial external view of the indoor unit body 1 showing a state after the negative ion generator S is slid.
The hooking projection 23 protruding from one side of the negative ion generator S is inserted into and supported by a hole provided in the receiving arm portion 17 of the support frame assembly 6. The engaging piece 24 of the negative ion generator S slides on the supporting piece 20 of the side cover 8 of the electrical component box, and the hole 26 provided here is a protrusion provided on the supporting piece 20. It exits from the portion 22 and faces the screw hole 21.

  From this, a small screw 28 as a stopper is screwed into the screw hole 21 through the hole 26, and the engaging piece 24 of the negative ion generator S is supported by the electric component box side cover 8. Fix to the piece 20 for use. The negative ion generator S is supported on both the left and right sides and does not move.

That is, even if the air filter F is attached to the support frame assembly 6 and the front panel 2 is attached to the rear body 3, the position of the negative ion generator S does not shift and it operates safely. The negative ion generator S can be supported by a simple operation of simply stopping the machine screw 28, and workability is improved.
The position of the negative ion generator S with respect to the heat exchanger 9 can always be kept constant, and an air cleaning function is ensured. The same is true after the service, and the air cleaning ability can be kept constant before and after the service.

  FIG. 7 is a diagram showing the relationship between the wiring cover 27 and the negative ion generator S when the negative ion generator S is temporarily held on the side cover 8 of the electrical component box. FIG. 8 is a diagram showing the relationship between the wiring cover 27 and the negative ion generator S when the negative ion generator S is held in the normal position.

  With the engagement piece 24 of the negative ion generator S temporarily held on the support piece 20 of the electric component box side cover 8, the upper end of the electric component box side cover 8 is extended from the upper end of the negative ion generator S. It is necessary to connect the lead wire to the electrical component box 15 through the gap between the rear surface of the unit and the heat exchanger 9 to perform electrical wiring. The lead wire is protected by the wiring cover 27.

  The negative ion generator S and the wiring cover 27 are each provided with a double insulation structure. In order to maintain a double insulation structure even after the negative ion generator S is slid as shown in FIG. 8, before the slide, the negative ion generator S and the wiring cover 27 are mutually connected as shown in FIG. Are overlapped with each other (dimension d) and covered with the wiring cover 27 from above the negative ion generator S.

Then, in order to hold the negative ion generator S in the normal position, even if it is slid as shown in FIG. 8, the overlapping portion W (dimension m) between the negative ion generator S and the wiring cover 27 is slight. But it remains and the lead is never exposed.
The lead wire is accommodated in the negative ion generator S and the wiring cover 27 with a margin. Even if the negative ion generator S is slid, the lead wire is not stretched, and safety is always ensured.

  By sliding the negative ion generator S, a hole 26 provided in the engagement piece 24 of the negative ion generator S and a screw hole 21 provided in the support piece 20 of the side cover 8 of the electric component box are provided. The positions coincide with each other, and a machine screw 28 as a stopper is screwed into this position. Therefore, the negative ion generator S is securely held with a simple configuration.

  As mentioned above, although this embodiment was described, the above-mentioned embodiment is shown as an example and does not intend limiting the range of embodiment. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Indoor unit main body, 4 ... Suction port, F ... Air filter, 9 ... Heat exchanger, 10 ... Indoor fan, 5 ... Air outlet, 12 ... Air flow path, 6 ... Support frame assembly, 17 ... Receiving arm part, 15 ... Electric parts box, 8 ... Electrical parts box side cover, 20 ... Supporting piece part, 21 ... Screw hole (fixing part), 22 ... Protrusion part (temporary fixing locking part), S ... Air cleaner (negative ion) Generator), 23... Projection for latching, 24... Piece for engagement, 26... Hole (engagement fixing portion), 27.

Claims (3)

In the indoor unit main body, a suction port, an air filter, a heat exchanger, an indoor blower, and an air passage that sequentially communicates the blowout port are formed, a support frame assembly that supports the air filter, and a side portion of the heat exchanger In an air conditioner indoor unit equipped with an electrical component box adjacent to
At the side of the electrical component box, an electrical component box side cover provided on the air passage upstream side of the heat exchanger;
A supporting piece projecting from the side of the electric component box side cover opposite to the electric component box side, and a temporary piece provided on the front side of the supporting piece with a predetermined gap left and right. A holding locking portion and a fixing portion;
An engagement piece projecting from a side portion on the side cover side of the electrical component box and configured to slide and fit into the support piece, and the support piece formed on the engagement piece An engagement fixing portion that is engaged with the temporary holding locking portion and the fixing portion that are formed on the supporting piece portion by sliding to the opposite side of the electrical component box side cover side An air purifier provided with a latching projection that projects from the side of the support frame and slides onto the receiving arm formed in the support frame assembly.
The air cleaner is temporarily held by engaging one end of the air component side cover with the engagement fixing portion and the temporary holding locking portion, and then slid in the counter-engagement direction. The air conditioner indoor unit is characterized in that both ends are fixed by hooking the other end to the support frame assembly. A lead wire that is electrically connected to a power supply unit of the air cleaner and an electrical component in the electrical component box extends into the electrical component box through an upper back surface of the side cover of the electrical component box, and the lead The indoor unit of an air conditioner according to claim 1, wherein the surface of the wire is protected by a wiring cover configured so that the lead wire is not exposed even if the air cleaner is slid. In the state in which the engagement fixing portion formed on the engagement piece portion of the air cleaner is engaged with the fixing portion of the supporting piece portion of the side cover of the electrical component box, The indoor unit for an air conditioner according to claim 1, wherein the indoor unit is fixed by being interposed.

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