JP2005180814A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner having an indoor unit body composed of a front panel and a rear body, with the rear body divided into two in simple arrangement so that a molding cycle and the cost of dies can be reduced. <P>SOLUTION: The indoor unit has inlets 2, 3 and an outlet 6 and is composed of a front panel 4 and a rear body 5. The rear body 5 is divided into two parts, i.e., an upper rear body section 5A and a lower rear body section 5B. The upper read body section has provided integrally therewith a back wall part; a heat exchanger mounting part; a front drain pan 17 and a rear drain pan 15 positioned respectively at the lower portions of front and rear heat exchanger parts; a lateral-flow fan; a fan motor mounting part; and a portion of an air passage 16 which is the exit side of the fan. The lower rear body section has provided integrally therewith a front air passage wall 16B leading from a nose in front of the lateral-flow fan to the outlet; a lower section of a rear air passage wall 16A leading from the underside of the back of the lateral-flow fan to the outlet; and a mounting part of a wind direction guide member that guides the direction of wind going out of the outlet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an improvement of an indoor unit body structure.

As an indoor unit that constitutes an air conditioner, recently, while securing the heat exchange area of the heat exchanger housed inside, the vertical size (height direction) size of the indoor unit body is reduced as much as possible and compressed. In order to remove the feeling, a heat exchanger formed in a substantially V shape in a side view is often used.
For example, in an indoor unit (indoor unit) of an air conditioner disclosed in [Patent Document 1], a heat exchanger is bent into a plurality of front heat exchanger portions and an upper end portion of the front heat exchanger portion. And a rear heat exchanger section that is formed in a slanting downward and straight shape. Depending on the model, the front heat exchanger section may be curved.
In any case, since the drain water adheres and flows down with the operation of the refrigeration cycle, it is necessary to dispose the drain pan at the lower portion to receive the drain water. Here, the height positions of the lower end of the front heat exchanger section and the lower end of the rear heat exchanger are extremely different, the position of the front drain pan that receives drain water flowing down from each is low, and the position of the rear drain pan is high.
JP 7-208757 A

By the way, the configuration of the indoor unit main body is roughly provided with a suction port and a blowout port, and is configured by combining a front panel and a rear main body. The rear main body includes the front drain pan and the rear drain pan, and an air passage that communicates the blower and the outlet.
The front panel and the rear main body are molded products made of a synthetic resin material. In other words, the resin material that has been melted with the mold assembled and pressed is poured into the gap formed in the mold under pressure, and is allowed to stand for a predetermined time to cool and solidify the resin material. Obtained by removing the mold.

The shape of the front panel is relatively simple and can be easily obtained as an integrally molded product. On the other hand, the rear main unit not only has a long shape in the vertical direction from the upper surface to the lower surface of the indoor unit main body. Since the bending direction of the air passage is different and the shape structure is complicated, it is difficult to form a complete integral molding.
In the above-mentioned [Patent Document 1], the rear main body is divided into a rear main body portion that forms a part of the air passage including the front drain pan, the rear drain pan, and the nose, and a pipe storage cover that forms the other portion of the air passage. An indoor unit main body having a casing that is divided and connected in advance and then assembled together with other components as a main body, and the drain generated in the indoor unit is guided to the drain pan and is seamlessly connected to the passage leading to the drain outlet Is obtained.

In the case of such a rear body, most of the rear body part, such as the front and rear drain pans, nose and blower mounting part, is formed, and the shape is complicated. It is difficult to mold with a mold that slides in one direction and pulls it out, and multiple molds that slide in another direction are incorporated into the mold, and these can be operated to enable integral molding. It was.
However, in the above molding method, in order to fill all the gaps with the material, it is necessary to inject the material with a large pressure and a large pressure as a whole. For this reason, the thickness of the molded product is larger than necessary. As a result, the material cost is high and the weight of the parts is increased. In addition, the mold becomes large and complicated, and the time spent for molding one piece increases, resulting in problems such as inability to increase productivity.
Further, as another rear main body, a configuration in which the front drain pan, the rear drain pan, and the air passage are formed as separate parts and combined and integrated later is also conceivable. In this case, there is an advantage that the mold is simplified and the cost of the mold is low, but on the other hand, a seam is generated in the water treatment structure and it is necessary to take complete measures against water leakage. The nature will decline.

  The present invention has been made based on the above circumstances, the purpose of which is that the indoor unit body is configured from the front panel and the rear body, the rear body is divided into two with a simple configuration, An object of the present invention is to provide an indoor unit for an air conditioner that can shorten the molding cycle and reduce the mold cost and cost.

In order to satisfy the above object, an indoor unit of an air conditioner according to the present invention includes a suction port and a blowout port as an indoor unit body, and includes an indoor unit body configured by a front panel and a rear body, and the interior of the indoor unit body. A heat exchanger comprising a front heat exchanger portion located on the front side of the indoor unit body and a rear heat exchanger portion located on the rear surface side, and these heat exchangers disposed in an inverted V shape in side view The cross-flow fan and the fan motor are arranged so that the air to be air-conditioned is sucked from the suction port and circulated through the heat exchanger, where heat is exchanged and then blown from the outlet through the air passage. In an indoor unit of an air conditioner equipped with a blower connected in a direction,
The rear main body is divided into an upper rear main body portion and a lower rear main body portion, and each of the upper rear main body portion includes a rear wall portion, the heat exchanger mounting portion, the front heat exchanger portion, and the rear heat exchanger portion. A front drain pan and a rear drain pan to be disposed at the lower portion, a cross-flow fan and fan motor mounting portion, and a rear fan passage wall upper portion of the blower are integrally provided, and the lower rear main body portion extends from the nose on the front side of the cross-flow fan to the outlet. The front air passage wall, the rear air passage wall lower part from the lower side of the cross flow fan back to the outlet, and the wind direction guide member mounting portion for guiding the direction of the air blown from the outlet are provided integrally.

  The present invention has an effect that the rear main body can be efficiently divided to shorten the molding time and reduce the mold cost and cost.

Hereinafter, an indoor unit of an air conditioner according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view in which an indoor unit of an air conditioner is partially cut away, and FIG. 2 is a cross-sectional view of the indoor unit.
In the figure, reference numeral 1 denotes an indoor unit main body. The indoor unit main body 1 includes a front panel 4 having an upper suction port 2 and a front suction port 3, a rear main body 5 having a suction port 6 to be described later, and these front panels. 4 and a side plate 1 </ b> A that is fitted to the left and right sides of the rear body 5.
The front panel 4 includes the upper suction port 2 into which the grill 7 is fitted, and the front suction port 3 that is opened and closed by a movable panel 8 that is provided with a support shaft at the lower end and is rotatable with the upper end as a free end. ing. A filter 9 is attached in the indoor unit main body 1 so as to face the upper suction port 2 from the front suction port 3. The filter 9 is detachably mounted from the lower end of a filter guide (not shown) provided at the lower end of the front suction port 3 and extends to the upper end of the filter guide provided at the rear side end of the upper suction port 2. Be present.

Furthermore, a heat exchanger 10 and a blower 11 are accommodated in the indoor unit main body 1, and an electrical component assembly 12 is attached to one side of the heat exchanger 10 and the blower 11. This electrical component assembly 12 has an electrical component box in which various control electrical components are accommodated, and a display unit attached to the front side, which is convenient for securing the size of the board and collecting electrical wiring. Good.
The heat exchanger 10 is formed in an inverted V shape when viewed from the side. Here, the front heat exchanger section 10A is curved, and the rear heat exchange is formed in a slanted and straight shape. It comprises a container part 10B. The front heat exchanger section 10 </ b> A is disposed to face the entire front suction port 3 and a part of the upper suction port 2, and the rear heat exchanger section 10 </ b> B faces the remaining part of the upper suction port 2. Arranged.

An auxiliary heat exchanger portion 10C is provided along the upper front surface of the front heat exchanger portion 10A and the upper surface of the rear heat exchanger portion 10B, and the subcooling auxiliary is provided along the lower front surface of the front heat exchanger portion 10A. A heat exchanger unit 10D is provided. And the air cleaner 13 is detachably attached between the auxiliary heat exchanger part 10C on the front surface of the front heat exchanger part 10A and the auxiliary heat exchanger part 10D for supercooling.
The blower 11 is arranged between the front heat exchanger part 10A and the rear heat exchanger part 10B constituting the heat exchanger 10 and covered with the front and rear heat exchanger parts 10A and 10B. The The blower 11 is composed of a fan motor and a cross flow fan fitted to the rotation shaft of the fan motor, and the axial length of the cross flow fan is the longitudinal length of the front and rear heat exchanger units 10A and 10B. And are arranged so as to face each other.

The rear main body 5 has an inclination substantially coincident with the lower end inclination of the rear heat exchanger section 10B and the auxiliary heat exchanger section 10C, and includes a rear drain pan 15 so as to surround these lower end sections. The rear body 5 is formed with a rear air passage wall 16 </ b> A that is bent from the rear drain pan 15 along the back side of the blower 11 and reaches the outlet 6.
Further, the rear main body 5 has an inclination substantially coincident with the lower end portions of the front heat exchanger portion 10A and the subcooling auxiliary heat exchanger portion 10D, and is provided with a front drain pan 17 so as to surround these lower end portions. A nose 18 is provided on the front side of the blower 11 of the front drain pan 17 in the rear body 5, and a front air passage wall 16 </ b> B extending from the nose 18 to the outlet 6 is formed. The front air passage wall 16B and the rear air passage wall 16A form an air passage 16 that communicates from the blower 11 to the outlet 6.

A vertical louver 20 and a horizontal louver 21 which are wind direction guide members are attached to the outlet 6. In other words, the vertical louvers 20 are provided on the back side of the outlet 6 and are arranged side by side with a predetermined interval, and all the louvers are connected to the louver drive mechanism so as to be simultaneously rotated in the same direction. Is done. Two horizontal louvers 21 are provided on the same surface as the front panel 4, and are connected to a drive mechanism and controlled to rotate.
Next, the rear main body 5 will be described in detail.

3 is a perspective view showing only the rear main body 5 taken out, FIG. 4 is a sectional view of the rear main body 5, and FIG.
The rear main body 5 is divided into an upper rear main body portion 5A and a lower rear main body portion 5B, and is molded as described later by a molding press using a mold corresponding to each. And the indoor unit main body 1 will be comprised with the front panel 4 and the both-sides board part 1A in the state which was assembled integrally and was completed as the rear main body 5. FIG.

The upper rear main body 5A includes a front drain pan 17 positioned below the front heat exchanger 10A constituting the heat exchanger 10, a rear drain pan 15 positioned below the rear heat exchanger 10B, and the blower. A rear side air passage wall 16A upper part constituting the air passage 16 which is the blowout side 11 is integrally provided.
Further, on both side portions of the upper rear main body portion 5A, guide rod portions 22A and 22B for communicating the front drain pan 17 and the rear drain pan 15 are provided, and drain water received by the rear drain pan 15 is received by the guide rod portions 22A, 22A, It can be led to the front drain pan 17 through 22B. In the front drain pan 17, a drain nipple 23 is integrally projected on the lower surface of the side portion facing the right guide rod portion 22A in the drawing. In a state where the indoor unit is attached to the wall surface as a product, a drain hose is connected to the drain nipple 23, and this drain hose extends through the wall surface to the outside.

  In particular, the upper end edge of the guide rod 22A on the right side in the drawing shown in FIGS. 3 and 5 is a semicircular portion formed in a substantially semicircular shape, and receives the rotation shaft of the fan motor constituting the blower 11. ing. These guide rod portions 22A, 22B, the front drain pan 17 and the rear drain pan 15 surround the cross-flow fan constituting the blower 11. The fan motor is disposed in a further right space portion of the right guide rod portion 22A in the figure, and the electric component assembly 12 is disposed from the upper rear body portion 5A to the lower rear body portion 5B. A ventilation unit (not shown) is disposed in a further left space portion of the left guide rod portion 22B in the drawing, and receives one support shaft of the cross-flow fan.

  With respect to the upper rear body portion 5A, the lower rear body portion 5B includes a lower portion of the rear air passage wall 16A connected to the upper portion of the rear air passage wall 16A provided in the upper rear body portion 5A, and A pipe cover 24 bent in a substantially horizontal direction from the outlet 6 is integrally formed. The lower rear main body portion 5B includes the front air passage wall 16B, and the front air passage wall 16B overlaps the lower surface of the front drain pan 17 of the upper rear main body portion 5A in an assembled state. A nose 18 that is bent along the end of the front drain pan 17 and is formed at a predetermined interval from a part of the peripheral surface of the cross-flow fan of the blower 11 is integrally provided at the upper end of the front air passage wall 16B. . The lower end portion of the front air passage wall 16B faces the lower end portion of the rear air passage wall 16A, and the outlet 6 is formed by these.

And the support part 20a of the vertical louver 20 which is a wind direction guide member which guides the direction of the wind which blows off from the blower outlet 6 is attached to the lower side rear-flow-path wall 16A lower part of the said lower rear main-body part 5B. Furthermore, the support part 21a of the two horizontal louvers 21 which are a wind direction guide member is provided in the lower part of 16 A of back side air passage walls.
The upper rear side of the lower part of the lower rear body part 5B that faces the lower side of the upper part of the rear air passage 16A of the upper rear body part 5A has an appropriate number of engaging protrusions a and engaging fitting recesses b. When the upper rear main body portion 5A and the lower rear main body portion 5B are joined together, the engagement portions a and b are overlapped and engaged with each other, so that a continuous rear air passage wall 16A is formed. Configure.

As shown in FIG. 1, the indoor unit body 1 having the rear body 5 configured as described above receives a command signal for air conditioning operation, and the movable panel 8 constituting a part of the front panel 4 is partially shown in FIG. 1. The upper end is turned by a predetermined angle with the upper end as a free end and stopped. Then, the compressor in the outdoor unit is driven to start the refrigeration cycle operation, the air cleaner 13 is activated, the blower 11 is driven, and the cross-flow fan performs a blowing action.
The room air is sucked into the indoor unit main body 1 from the front suction port 3 and the upper suction port 2 and passes through the filter 9 to filter dust mixed in the room air. A part of the air is subjected to dust collection and deodorization treatment by the air purifier 13, and exchanges heat with each other through the front heat exchanger portion 10 </ b> A and the rear heat exchanger portion 10 </ b> B constituting the heat exchanger 10. .

The heat-exchanged air is guided to the air blowing path 16 via the cross flow fan of the blower 11. Then, the air is guided by the nose 18 and guided along the air blowing path 16, and blown out from the blowout port 6 to harmonize the air in the room. When the air is blown out from the air outlet 6, the air blowing direction is guided to the vertical louver 20 and the horizontal louver 21.
Further, in the heat exchanger 10, the moisture in the room air is condensed along with the heat exchange action during the cooling operation, whereby water droplets adhere. Over time, the water droplets become enlarged and become drain water dripping. The drain water that adheres to the rear heat exchanger section 10B and flows down is received by the rear drain pan 15 and guided to the front drain pan 17 via the guide rod sections 22A and 22B. The drain water that adheres and flows down to the front heat exchanger section 10 </ b> A is received by the front drain pan 17 and merges with the drain water guided from the rear drain pan 15. These drain waters are discharged from the drain nipple 23 to the outside by a drain hose.

The ventilation unit performs a ventilation action of drying and sterilizing the interior of the indoor unit body 1 during the refrigeration cycle operation or after the end of the operation, or discharging indoor air to the outside or introducing fresh outside air into the room.
Next, a method for manufacturing the upper rear main body 5A and the lower rear main body 5B that constitute the rear main body 5 of the indoor unit of the air conditioner that operates in this manner will be described.
FIG. 6 (A) is a diagram for explaining a mold configuration and a mold drawing direction when the upper rear main body 5A is manufactured by a molding press, and FIG. 6 (B) is a lower press main body 5B by a molding press. It is a figure explaining the metal mold | die structure in the case of manufacture, and a metal mold | die extraction direction.

First, a mold configuration for manufacturing the upper rear main body portion 5A and a mold drawing direction will be described with reference to FIG.
The upper rear main body portion 5A is completed in a state where the upper rear main body portion 5A is slanted and laid down. A first mold Ka called a so-called core is movably supported on one side with a broken line in the figure as a boundary, and a second mold called a cavity is formed on the upper half facing the first mold Ka. The mold Kb is fixedly supported. Further, a third mold Kc called a slide core is movably supported on a part of the first mold Ka. In the figure, the third mold Kc is not embedded in the first mold Ka, but is movable sideways by a predetermined distance.

  In this way, the upper rear body portion 5A is molded using a molding press machine including the three molds Ka to Kc. Specifically, the first mold Ka is incorporated into the third mold Kb, and the first and third molds Ka and Kc are movablely joined in a state where a predetermined pressure is applied to the second mold Kb. Let After this state, the synthetic resin material melted in the gap formed between the first to third molds Ka to Kc is injected and filled by applying pressure from the cavity side.

After that, it is allowed to cool for a predetermined time and left to stand until the synthetic resin material is solidified. After a predetermined time has elapsed, the third mold Kc is moved laterally with respect to the first mold Ka to remove the mold, and then the first mold Ka is moved away from the second mold Kb. Then, the product adhering to the first mold Ka in the separated state is subjected to mold release operation, and the product is taken out from the mold.
Accordingly, the upper side portion of the front drain pan 17, the rear drain pan 15, and the rear air passage wall 16 </ b> A, which is a part of the air passage 16, is configured as the second die Kb with respect to the die release direction of the first die Ka. . Similarly, the drain nipple and the exhaust nipple (both not shown) constituting a part of the ventilation unit are also configured in the second mold Kb with respect to the mold releasing direction of the first mold Ka.

Next, a mold configuration for manufacturing the lower rear body portion 5B and a mold drawing direction will be described with reference to FIG.
As shown by the broken line in the figure, a first mold Kd called a core is movably supported on the lower left side with the vertical direction of the substantially central part as a boundary, and the upper right facing the first mold Kd. A second mold Ke called a so-called cavity is fixedly supported on the part side.
A third mold Kf called a so-called slide core is movably supported on the left part of the drawing of the first and second molds Kd, Ke, and a so-called slide core is shown on the right part of the figure. A so-called fourth mold Kg is movably supported, and the third and fourth molds Kf and Kg are movable laterally by a predetermined distance.

In this way, the lower rear body portion 5B is molded using a molding press machine including the four molds Kd to Kg. Specifically, the third mold Kf and the fourth mold Kg are incorporated into the first mold Kd, and these molds Kd, Kf, Kg are applied to the second mold Ke by applying a predetermined pressure. Movable joining. After this state, the synthetic resin material melted in the gaps between the first to fourth molds Kd to Kg is injected and filled by applying pressure from the cavity side.
After that, it is allowed to cool for a predetermined time and left to stand until the synthetic resin material is solidified. After the predetermined time has elapsed, the third mold Kf and the fourth mold Kg are moved to the opposite side with respect to the first mold Kd and the second mold Ke, respectively, and die removal is performed. Thereafter, the first mold Kd is moved away from the second mold Ke, and the product adhering to the first mold Kd in the separated state is released, and the product is taken out of the mold.

Therefore, the front side air passage wall 16B including the nose 18 constituting the air passage 16 is constituted by the first mold Kd and the second mold Ke with respect to the mold releasing direction of the third mold Kf. A support portion 21a of the horizontal louver 21 is formed on the front air passage wall 16B on the air passage 16 side in the direction in which the first die Kd is removed from the second die Ke and the third die Kf. .
Further, the lower portion of the rear air passage wall 16A including the pipe cover 24 that constitutes the air passage 16 is configured in the direction in which the first die Kd and the second die Ke are removed from the fourth die Kg. The A support portion 20a of the vertical louver 20 is formed on the lower portion of the rear air passage wall 16A in the direction in which the first mold Kd and the second mold Ke are removed from the fourth mold Kg.

In this way, the rear main body 5 is divided into an upper rear main body portion 5A and a lower rear main body portion 5B, and the upper rear main body portion 5A has a rear drain pan 15, a front drain pan 17, guide rod portions 22A, 22B, and A drain water treatment structure including a drain nipple 23 and the like, a support structure that supports the heat exchanger 10, a fan motor and a cross-flow fan support structure that constitute the blower 11, and a rear air passage wall 16 </ b> A that constitutes the air duct 16. Everything is provided in one piece.
The lower rear main body 5B has a wind direction such as a front air passage wall 16B extending from the nose 18 to the air outlet 6, the air passage 16 constituting the lower portion of the rear air passage wall 16A, and the vertical / horizontal louver support portions 20a and 21a. All of the attachment structure of the guide member are integrally provided.

  When the upper rear body 5A and the lower rear body 5B were actually manufactured and their respective weights were measured, the upper rear body 5A was approximately 900 g, and the lower rear body 5B was approximately 450 g. On the other hand, the portion described in the prior art has a weight corresponding to the upper and rear main body portions of the present invention of about 1300 g, and if the structure of the present invention is employed, the weight can be reduced.

  In this way, the rear main body 5 is divided into the upper rear main body portion 5A and the lower rear main body portion 5B, and the upper rear main body portion 5A is provided with all the water treatment structures. In addition to ensuring reliability and miniaturizing the components of the rear body, the mold structure can be simplified, the mold capacity can be reduced, and the molding cycle can be shortened by shortening the time for cooling and solidification. Can be planned. In particular, since all the wind direction guide members can be attached to the lower rear main body portion 5B, it is easy to manage the assembly, leading to cost reduction.

The external appearance perspective view which partially cut off the indoor unit of the air conditioner which shows embodiment of this invention. Sectional drawing of the outline of the indoor unit based on the embodiment. The perspective view of the rear main body based on the embodiment. Sectional drawing of the rear main body based on the embodiment. The disassembled perspective view of the rear main body based on the embodiment. The figure explaining shaping | molding of the upper rear main-body part and lower rear main-body part based on the embodiment.

Explanation of symbols

  2 ... Upper suction port, 4 ... Front suction port, 4 ... Front panel, 6 ... Outlet port, 5 ... Rear body, 10 ... Heat exchanger, 11 ... Blower, 1 ... Indoor unit body, 5A ... Upper rear body portion 5B: Lower rear main body part, 15 ... Rear drain pan, 17 ... Front drain pan, 16 ... Air duct, 20 ... Vertical louver, 21 ... Horizontal louver.

Claims (1)

An indoor unit body having a suction port and a blowout port, which is composed of a front panel and a rear main body, and disposed in the indoor unit main body, has an inverted V shape in a side view, and is located on the front side of the indoor unit main body A heat exchanger composed of a front heat exchanger section and a rear heat exchanger section located on the rear surface side, and disposed so as to be covered by these heat exchangers, and sucks air in the air-conditioned room from the suction port The air conditioner room is provided with a cross-flow fan and a fan in which a fan motor is connected in the axial direction so as to be circulated through the heat exchanger and heat-exchanged here and then blown from the outlet through the air passage. In the machine
The rear body is divided into an upper rear body part and a lower rear body part,
A front drain pan and a rear drain pan, a cross-flow fan and a fan motor mounting portion disposed on the lower rear body portion, the heat exchanger mounting portion, the front heat exchanger portion and the rear heat exchanger portion, respectively, on the upper rear main body portion. And the rear side air passage wall upper part of the blower is provided integrally,
The lower rear main body has a front air passage wall extending from the nose on the front side of the cross flow fan to the outlet, a lower portion of the rear air passage wall extending from the lower back of the cross flow fan to the outlet, and a wind blown from the outlet. An indoor unit for an air conditioner, wherein a mounting portion for a wind direction guide member for guiding a direction is provided integrally.

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