JP4921134B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly to an indoor unit of a separation type air conditioner provided with an inverted V-shaped heat exchanger.

In Patent Literature 1, an indoor unit is provided with an inverted V-shaped heat exchanger, and a rear plate (cabinet), a blower support, a front drain pan, and a rear drain pan are all integrally formed at the same time, and the blower and nose blower systems are provided. There has been proposed an indoor unit of an air conditioner that can improve assembly accuracy and suppress noise (pishi noise) due to thermal expansion or the like.
Japanese Patent No. 3572249

  Here, the indoor unit of the conventional air conditioner is shown to Fig.6 (a) (b) (c). Usually, indoor units of air conditioners often plan a plurality of models with different cooling and heating capabilities for product disparity, and a plurality of different shapes are used for two to three types of casings having different outer dimensions. Multiple models will be planned by combining heat exchangers.

  FIG. 6A shows that a rear drain pan 101, a front drain pan 102, and a rear guider 103 are integrally formed on a rear plate 100 (cabinet) constituting a part of the housing, and four heat exchangers 105a are enclosed so as to surround the blower 104. ˜105d are arranged in an inverted V shape, and another auxiliary heat exchanger 105e is arranged on the rear side.

  FIG. 6B shows an example in which three heat exchangers 105 a to 105 c are arranged so as to surround the blower 104. In this example, the formation position of the rear drain pan 101 integrated with the rear plate 100 is different from that in FIG.

  Furthermore, FIG.6 (c) shows the example which has arrange | positioned three heat exchangers 105a-105c so that the air blower 103 may be enclosed similarly to FIG.6 (b). In this example, a spacer 106 is inserted between the heat exchanger 105a and the rear drain pan 101 in order to support the rear heat exchanger 105c.

  Generally, in air conditioners, when planning multiple models by combining multiple heat exchangers with different shapes, the indoor unit of Patent Document 1 produces molds for multiple cabinets (rear plates) according to the model. There is a need to. For example, in the indoor unit shown in FIGS. 6 (a) and 6 (b), the heat exchanger 105c shown in FIG. 6 (a) and the heat exchanger 105d shown in FIG. Is different. Therefore, the position of the rear drain pan and the shape of the rear guider are different, and the rear plate (cabinet) needs to have different shapes even if the outer dimensions of the product are the same.

  For this reason, for example, when planning 6 types of models by combining 3 types of heat exchangers with 2 types of products with different external dimensions, it is necessary to manufacture 6 types of back plate (cabinet) molds. It was.

  Further, as an improvement measure, as shown in FIG. 6C, a measure to suppress the mold cost of the rear plate (cabinet) 100 by attaching the spacer 106 and using the rear plate 100 and the rear drain pan 101 in common can be considered. . However, the rear guider 103 is provided integrally with the rear plate 100 (cabinet) on the rear side of the blower 104, and it is usual to devise various shapes of the rear guider 103 in order to optimize the air flow characteristics and noise. When different heat exchangers are attached to the same rear plate 105, the shape of the rear guider 103 cannot be adjusted according to the shape of the heat exchanger.

  Moreover, in the back plate (cabinet) like patent document 1, since the metal mold | die has integrally formed several components, it becomes a large and complicated metal mold structure, its manufacturing period becomes long, Since many complicated slide structures are included, troubles such as malfunction of the mold are likely to occur, and the cost of the mold is very expensive.

  In view of the above, an object of the present invention is to provide an air conditioner that enables a lineup of a plurality of products with a minimum number of rear plates and is excellent in air flow characteristics.

In order to achieve the above object, according to the present invention, a housing of an indoor unit is constituted by a front panel and a rear plate, an air suction port and an air outlet are formed in the housing, and air is blown into the housing. Close to the blower to form a blower, a heat exchanger arranged to surround the blower, a first rear drain pan that receives the dew condensation water of the rear heat exchanger, and an air passage leading to the outlet in the air conditioner having a stabilizer and rear guider disposed in the first drain pan after and said rear plate are formed integrally with the lower end position of the heat exchanger of the rear side is the first when located away than the rear drain pan, wherein the first after drain pan be separate, and a second drain pan for receiving dew condensation water of the heat exchanger of the rear side, the first Ru is a connectable to the upper pan after 1 And by, characterized in that can be commonly used and the back plate and the first rear drain pan.

  According to the above configuration, when the heat exchanger is installed on the rear plate integrally formed with the first rear drain pan, the lower end position thereof is separated from the first rear drain pan due to the shape of the rear heat exchanger. Since the second drain pan for receiving condensed water from the heat exchanger behind it is connected to the upper side of the first rear drain pan when in position, a common rear plate (cabinet) can be used regardless of the model. Can be used.

The rear guider includes a first rear guider on the outlet side and a second rear guider connected to the upstream side of the air passage of the first rear guider depending on the model, and the second rear guider includes the first rear guider. it is formed in the drain pan integrally after 2, wherein as the second rear drain pan covers the upper portion of the drain pan after the first, may be placed on the drain pan after the first. According to the above configuration, only by connecting the second rear guider to the first rear guider according to the model, it is possible to obtain optimum air flow characteristics and noise countermeasures. Moreover , a 2nd back drain pan can be installed according to the shape of a heat exchanger. Furthermore, the position of the drain pan is changed according to the model, and an optimum air flow characteristic can be obtained.

The rear guider includes a first rear guider of the air outlet side, and a second rear guider articulating the air passage upstream of the first rear guider according to the model, after the first rear guider is the first It may be formed integrally with the drain pan .

According to the above configuration, because it forms a first rear guider and the drain pan after the first to the rear plate together, the number of components is that a little.

  The second rear guider may be formed separately from the first rear guider and the first rear drain pan. Thus, only by connecting the second rear guider to the first rear guider according to the model, an optimum air flow characteristic and noise countermeasure can be obtained.

  Further, by integrally forming the front drain pan and the first rear drain pan, the number of parts can be reduced and the assembly man-hour can be reduced.

  Further, a flow channel for guiding the condensed water stored in the first rear drain pan to the front drain pan is formed on the rear plate. With this flow channel, the dew condensation water can flow from the first rear drain pan to the front drain pan and can be discharged from the front drain pan to the outside.

  In addition, a drain outlet that guides condensed water to the first rear drain pan can be formed in the second rear drain pan, and the condensed water accumulated in the second drain pan can be flowed to the first drain pan through the drain outlet.

  As described above, according to the present invention, even when a plurality of models in which different heat exchangers are combined on the same rear plate (cabinet), an optimum air flow characteristic is obtained in each model, and the total amount of generated gold is increased. Mold costs can be minimized.

  An embodiment of the present invention is shown in FIGS. FIG. 1 is a perspective view of an indoor unit of an air conditioner, a side sectional view of the indoor unit, and FIG. 3 is a perspective view of a cabinet (rear plate) and a rear drain pan. 4 and 5 are side sectional views of the housing of the indoor unit.

  As shown in FIG. 2, the indoor unit 1 has an air suction port 3 formed on the upper surface of a box-shaped housing 2 and an air outlet 4 formed on the lower front surface. Inside the housing 2, a heat exchanger 5 and a blower 6 are disposed in an internal air passage from the suction port 3 to the blowout port 4.

  The housing 2 holds a heat exchanger 5 and a blower 6 that are main members of the indoor unit on the front side, and a plate-like rear plate 2a attached to the indoor wall surface on the rear side, and a rear surface opened to the rear plate 2a. It is comprised from the box-shaped front panel 2b fitted.

  The front panel 2b has a suction port 3 formed on the upper surface thereof and a blower outlet 4 formed on the lower portion of the front surface. The blower outlet 4 is provided with a wind direction changing device 12 composed of a vertical louver and a horizontal louver, and a wind guide panel 7 pivotally supported around the first shaft 10 so as to be openable and closable around the first shaft 10.

  The air guide panel 7 is positioned in the substantially horizontal direction in its open posture, and can blow the air blown out from the air outlet 4 substantially horizontally or obliquely upward. The wind guide panel 7 is divided into a cover panel 8 and an extension panel 9, and the cover panel 8 is pivotally supported around the second shaft 11 so as to be openable and closable with respect to the extension panel 9. And the wind from the blower outlet 4 can be guide | induced to the perpendicular downward direction by the open attitude | position of the cover panel 8. FIG.

  The heat exchanger 5 is arranged in an inverted V shape so as to surround the blower 6 from three directions. The heat exchanger 5 is provided with a plurality of heat exchangers depending on the model. In the example of FIG. 4, three heat exchangers 5 a to 5 c are arranged in an inverted V shape so as to surround the blower 6 from the front and rear and the upper side, and further, on the back side of the rear heat exchanger 5 c, The two auxiliary heat exchangers 5d are arranged in parallel to the rear heat exchanger 5c.

  On the other hand, in the heat exchanger 50 shown in FIG. 5, four heat exchangers 50a to 50d are arranged so as to surround the blower 6, and an auxiliary heat exchanger 50e is further arranged on the back side thereof. Therefore, the heat exchanger 5 shown in FIG. 4 and the heat exchanger 50 shown in FIG. 5 are different in the height position of the rear heat exchanger. The lower end portion of the rear heat exchanger 5c shown in FIG. 4 is at an upper position as compared with the rear heat exchanger 50d shown in FIG. Therefore, the rear drain pan 18 shown in FIG. 5 cannot be used as it is. A countermeasure in this case will be described later.

  Each heat exchanger 5 is formed in a rectangular parallelepiped shape from a heat medium tube and a large number of fins, and is connected to another heat exchanger at the ends of the heat medium tube to constitute a part of the refrigeration cycle. ing.

  2 and 4, a switching valve (not shown) is provided between the rear heat exchangers 5c and 5d and the front heat exchangers 5a and 5b, and the rear heat exchanger is used during the dehumidifying operation. 5c, 5b is used as a condenser, and the air from which moisture has been removed by the front heat exchangers 5a, 5b is warmed using the exhaust heat of the rear heat exchangers 5c, 5d and discharged from the outlet 4. Thermal dehumidification is also possible.

  Further, a front drain pan 17 for storing condensed water from the heat exchanger 5a is provided below the front heat exchanger 5a. In addition, a first rear drain pan 18 that stores condensed water from the heat exchanger 5c is provided below the rear heat exchanger 5c. The front drain pan 17 and the first rear drain pan 18 are integrally formed by support plates 24 at both ends thereof.

  The front drain pan 17 and the first rear drain pan 18 are of a known structure formed in a bowl shape, and the rear end portion thereof is joined to the lower end portion of the rear plate 2a and is formed integrally with the rear plate 2a. However, a receiving portion 28 that supports a back surface rib 25 of a second rear drain pan 19 described later is formed inside the rear drain pan 18.

  Further, a stabilizer 15 is integrally formed on the lower surface of the front drain pan 17 so as to approach the blower 6. A rear guider 16 is formed on the front side of the first rear drain pan 18 by approaching the blower 6. An internal air passage is formed between the stabilizer 15 and the rear guider 16.

  The blower 6 is a cross-flow fan, and the axial direction of the rotation shaft is the left-right direction. The blower 6 is disposed closer to the outlet 4 than the heat exchanger 5 in the internal air passage.

  The rear guider 16 includes a first rear guider 16a on the outlet side and a second rear guider (tongue) 16b connected to the upstream side of the air passage of the first rear guider 16a depending on the model. The rear guider 16 is formed in an arc shape in accordance with the blowing direction of the internal air passage.

  The first rear guider 16 a is formed integrally with the first rear drain pan 18. That is, the rear plate 2a, the first rear drain pan 18 and the first rear guider 16a, and further the front drain pan 17 and the stabilizer 15 are integrally formed.

  A step-shaped engagement receiving portion 29 is formed at the upper end of the first rear guider 16a so that the lower end portion 30 of the second rear guider (tongue portion) 16b can be engaged and placed thereon.

  Further, a drain port 21 is formed at the end of the first rear drain pan 18. The first rear drain pan 18 is inclined in the longitudinal direction toward the drain port 21 in FIG. 3, and the flowing water channel 20 communicating from the drain port 21 to the front drain pan 17 is integrated with the support plate 24, that is, the rear plate 2a. Is formed. The flowing water channel 20 guides the condensed water stored in the first rear drain pan 18 to the front drain pan 17.

  On the other hand, a second rear guider (tongue) 16b and a second rear drain pan 19 attached according to the model are provided. FIG. 4 illustrates an example in which the second rear guider (tongue) 16b and the second rear drain pan 19 are integrated. In this example, a plurality of ribs 25 are formed on the back surface of the second rear drain pan 19 at intervals in the left-right direction. An engagement recess is formed at the lower end of the rib 25, and the engagement recess engages with a projection 28 formed inside the first rear drain pan 18, and a second is formed above the first rear drain pan 18. A rear drain pan 19 is placed.

  Note that the second rear drain pan 19 is inclined in the longitudinal direction toward the drainage portion 22 in FIG. 3, and the condensed water of the second rear drain pan 19 is sent from the drainage portion 22 to the first rear drain pan 18 or the flowing water channel. 20 is led to the front drain pan 17.

  In the example of FIG. 5, the second rear drain pan 19 is not necessary, but only the second rear guider (tongue) 16b is manufactured, and the lower end 30 of the second rear guider (tongue) 16b is attached to the first rear guider (tongue) 16b. It is engaged and placed on the upper end engagement receiving portion 29 of the rear guider 16a.

  The support plate 24 may be integrally formed with a support portion that supports a motor (not shown) that rotationally drives the blower 6.

  As shown in FIG. 2, a filter 26 that removes dust from the sucked air is disposed in the suction port 3 of the housing 2. Further, a filter cleaning device 27 is provided that removes dust adhering to the filter 26 with a brush and suction means while moving the filter 26.

  4 and 5 show an example in which heat exchangers having different shapes are attached to the rear plate 2a having the same shape in the above configuration. FIG. 4 shows an example in which three heat exchangers 5a to 5c are arranged in an inverted V shape so as to surround the blower 6 from the front and rear and the upper side. On the other hand, FIG. 5 is an example in which four heat exchangers 50 a to 50 d are arranged so as to surround the blower 6. In both, in the heat exchangers 5c and 50d on the rear side, the size of the heat exchanger of FIG. 4 is set to be shorter. Therefore, in the model of FIG. 4, the integrally molded product of the second rear guider (tongue) 16 b and the second rear drain pan 19 is attached to the upper side of the first rear drain pan 18.

  On the other hand, in the indoor unit 1 shown in FIG. 5, since the lower end position of the rear heat exchanger 50d is the lower side, the heat exchanger 50d is mounted on the first rear drain pan 18. Then, a separately molded second rear guider (tongue) 16b is attached to the first rear guider 16a.

  As described above, the rear plate 2a can be commonly used only by making the second rear guider (tongue) 16b and the second rear drain pan 19 different. In addition, the second rear guider (tongue) 16b can be adjusted to an individual shape according to the shape of the heat exchanger, and an optimum air flow characteristic can be obtained for each model. Further, it is not necessary to use the spacer 106 shown in FIG.

  Further, since the second rear guider (tongue) 16b and the rear drain pan 19 are considerably smaller than the rear plate 2a, the mold production period is short and the mold cost can be kept low. For example, in the case of planning a total of six models by combining two types of product external dimensions and three types of heat exchangers, six types of back plate molds were conventionally required. It is only necessary to add two types of rear plate (cabinet) molds and rear drain pan or rear guider molds according to the external dimensions of the rear panel. Furthermore, since the shape of the rear guider can be adjusted according to the shape of the heat exchanger for each model, an optimal air flow characteristic can be obtained for each model.

  Further, since the rear plate 2a is integrally formed with a flow channel 20 that guides the condensed water of the first rear drain pan 18 to the front drain pan 17, the first drain drain pan 18 passes through the flow channel 20 to the front drain pan 17. Condensed water can be allowed to flow, and these condensed water can be discharged together.

  Further, since the second rear drain pan 19 is formed with a drain port 22 that guides condensed water to the first rear drain pan 18, the condensed water of the second rear drain pan 19 passes through the drain port 22 to the lower first drain pan 19. Then, it flows into the rear drain pan 18, and further flows into the front drain pan 17 from the drain port 21 of the first drain pan 18 through the flow channel 20, and is drained outside.

  Also, the first rear drain pan 18 is not integrally provided on the rear plate 2a, and the second rear drain pan and the second rear guider (tongue) 16b are integrated into a shape corresponding to each heat exchanger. You can also. In this case, since the first rear drain pan 18 is not provided on the rear plate 2a, the mold structure of the rear plate 2a can be further simplified, and an optimum air flow characteristic according to the heat exchanger can be obtained.

  As described above, even in a plurality of models having different combinations of the heat exchangers 5 and 50 and the rear plate 2a, the condensed water generated in the rear drain pan 18 or 19 is surely passed through the front drain pan 17 without splashing water. Waste water can be treated outdoors.

  In addition, this invention is not limited to the said embodiment, Of course, many correction changes can be added within the scope of the present invention.

The perspective view of the indoor unit of the air conditioner which concerns on this invention Side cross-sectional view of indoor unit Perspective view of cabinet (rear plate) and rear drain pan Side cross-sectional view of indoor unit Side sectional view of an indoor unit equipped with a heat exchanger different from FIG. (A) (b) (c) is side sectional drawing which shows the indoor unit of the conventional air conditioner

Explanation of symbols

1 Indoor unit 2 Housing 2a Rear plate (cabinet)
2b Front panel 3 Suction port 4 Outlet 5 Heat exchanger 6 Blower 7 Air guide panel 8 Cover panel 9 Extension panel 10 First shaft 11 Second shaft 15 Stabilizer 16 Rear guider 16a First rear guider 16b Second rear guider ( Tongue)
17 Front drain pan 18 First rear drain pan 19 Second rear drain pan 20 Flow channel 24 Support plate 26 Filter 27 Filter cleaning devices 50a to 50d Heat exchanger

Claims (3)

The housing of the indoor unit is composed of a front panel and a rear plate, and an air suction port and an air outlet are formed in the housing, and a blower that blows air is disposed in the housing so as to surround the blower. A heat exchanger, a first rear drain pan that receives the dew condensation water of the rear heat exchanger, and a stabilizer and a rear guider that are arranged close to the blower to form an air passage leading to the air outlet. In the air conditioner
The first drain pan after and said rear plate are formed integrally, when the lower end position of the heat exchanger of the rear side is in a position away than drain pan after the first, after the first the drain pan be separate, and, second rear drain pan for receiving dew condensation water of the heat exchanger of the rear side, by Rukoto is capable connected to the upper side of the first rear drain pan, wherein An air conditioner characterized in that the first rear drain pan and the rear plate can be used in common . The rear guider is provided with a first rear guider of air outlet side, and a second rear guider articulating the air passage upstream of the first rear guider according to the model, the second rear guider is, the second The first rear drain pan is formed integrally with a rear drain pan, and the second rear drain pan is placed on the first rear drain pan so as to cover an upper portion of the first rear drain pan . Air conditioner. The rear guider includes a first rear guider on the air outlet side and a second rear guider connected to the upstream side of the air passage of the first rear guider depending on the model, and the first rear guider is connected to the first rear guider. The air conditioner according to claim 1 or 2, wherein the air conditioner is formed integrally with a drain pan .

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