JP4495005B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner that evaporates by draining drain water generated in an evaporator to a condenser.

  In the air conditioner constituting the refrigeration cycle, when drain water is drained inside, drain water generated from the evaporator is dropped into the condenser. The drain water is vaporized by touching a high-temperature heat exchanger.

In patent document 1, the retention part of drain water is formed between a radiation fin and a radiation fin, drain water is stored in a retention part, and it is made to vaporize by making it contact with condensed air for a long time. With this configuration, the drain water dripped into the condenser can be reliably vaporized without flowing down immediately through the gap between the heat dissipating fins.
JP 2001-116288 A

  By the way, when drain water is offset and dripped with respect to a condenser, the part which drain water accumulates in a retention part and the part which does not accumulate are made. At that time, there is a problem that a temperature difference occurs between the heat radiation fin on the side where the drain water is accumulated and the heat radiation fin on the side where the drain water is not accumulated, thereby impairing the original function of the condenser.

  Therefore, the present invention aims to provide an air conditioner that can drop drain water uniformly to a condenser with a simple configuration and evaporate the drain water more reliably without impairing the function of the condenser. And

In order to achieve the above object, in an air conditioner in which drain water generated in an evaporator is dropped onto a condenser and evaporated, a dropping tray for dripping the drain water uniformly onto the condenser, and the dropping tray Supply means for supplying the drain water, an evaporator is provided above the dropping tray, a drain pan is disposed below the evaporator, and the drain water is supplied to the condenser in the dropping tray. A plurality of water holes to be dripped are formed, a lid member for preventing drain water supplied to the dripping pan from overflowing is provided, the drain pan is a lid member, and on the bottom surface of the drain pan, A distribution member that guides drain water to each of the water flow holes is provided.

  The dropping tray has a supply port for supplying drain water from the supply means, and allows the drain water supplied from the supply port to drop from the water hole to the condenser. At this time, it arrange | positions so that a part of distribution member may pass a water flow hole. That is, the distribution member is in contact with the periphery of the water passage hole, or the distribution member is in proximity to the water passage hole (including non-contact and insertion). As a result, the drain water comes into contact with the distribution member and the surface tension is hardly generated and does not accumulate in the water passage hole. Further, the drain water flows through the distribution member and is thus surely guided to the water passage hole.

  The water passage hole is formed so that the opening area on the upper side is wider than the opening area on the lower side. Specifically, the upper surface side into which drain water flows is greatly opened, and is formed in a mortar shape so that the opening becomes narrower toward the condenser side, that is, the lower side. Due to this mortar shape, drain water tends to flow down along the slope of the water passage hole when dripping from the water passage hole, so that the surface tension becomes difficult to work at the opening on the lower surface side and drops smoothly.

  Further, the water passage holes are densely distributed in a far region compared to a region near the supply port. That is, as the distance from the suction port increases, the water holes are formed densely. Thereby, the drain water supplied by the supply means reaches a position far from the supply port without being dripped all at a position close to the supply port. Therefore, drain water can be uniformly dripped with respect to a condenser.

Moreover , a sealing member is provided between the lid member and the dropping tray, a guide wall is formed so that drain water flows from the supply port to the dropping tray, and the sealing member is in close contact with the guide wall. Thereby, even if drain water is ejected vigorously from the supply means, the drain water can be prevented from spilling from the dropping pan.

  As apparent from the above description, according to the present invention, the drain water can be guided by the presence of the distribution member so that the supplied drain water spreads uniformly over the dropping pan. In addition, since a part of the distribution member is arranged so as to pass through the water passage hole, the effect of the surface tension of the drain water in the water passage hole can be weakened, and even a small amount of drain water can be efficiently dropped onto the condenser. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view showing the overall configuration of an integrated air conditioner according to the present invention, FIG. 2 is a plan sectional view of the integrated air conditioner, and FIG. 3 is an external view of the integrated air conditioner as viewed from the front side. FIG. 4 is a perspective view of the external appearance of the integrated air conditioner as seen from the back side.

  In the integrated air conditioner, as shown in FIGS. 1 and 2, a cabinet 1 includes a compressor 2, a condenser 3, an evaporator 4, and a throttle mechanism (not shown), thereby forming a refrigeration cycle. Is done. The air conditioner performs a cooling operation for generating cold air to cool the room. Therefore, the air conditioner includes a blower fan 5 for the evaporator 4, an exhaust fan 6 for the condenser 3, an exhaust duct 7, and a suction pump 8 for processing drain water generated by the cooling operation. ing.

  The cabinet 1 has a structure surrounded by a front panel 10, a pair of left and right side plates 11, and a back plate 12, as shown in FIGS. The cabinet 1 is partitioned into an upper cooling chamber 13 and a lower exhaust heat chamber 14. The cooling chamber 13 and the exhaust heat chamber 14 are partitioned by a partition plate 15, and the upper and lower spaces are thermally insulated.

  The cooling chamber 13 accommodates the evaporator 4 and the blower fan 5, and the exhaust heat chamber 14 accommodates the compressor 2, the condenser 3, the exhaust fan 6, and the suction pump 8. In the cooling chamber 13, the evaporator 4 is disposed on the front side, and the blower fan 5 including a sirocco fan is disposed on the back side. In the heat exhaust chamber 14, the condenser 3 is disposed on the front side, and the exhaust fan 6 including a sirocco fan is disposed on the back side. Between the condenser 3 and the exhaust fan 6, the compressor 2 and the suction pump 8 are arrange | positioned at right and left, respectively. The condenser 3 is located below the evaporator 4, and the evaporator 4 and the condenser 3 are lined up and down.

  The front side of the cabinet 1 is opened, and this opening is covered with the front panel 10. The evaporator 4 and the condenser 3 face the opening, and a gap 16 is formed between the front panel 10 and the evaporator 4 and the condenser 3. A filter 17 is detachably attached to the gap 16.

  A front suction port 20 and an air outlet 21 are formed in the front panel 10. Further, a side suction port 22 is formed between the front panel 10 and the side plate 11. The front suction port 20 is located in the center of the front panel 10 and is arranged in the vertical direction. The front suction port 20 and the side suction port 22 communicate with the gap 16. The blower outlet 21 is located in the upper part of the front panel 10, and is opened toward the diagonally upward direction from the horizontal direction. The air outlet 21 is provided with a louver 23, and the louver 23 is swung by a motor. The blower outlet 21 communicates with the cooling chamber 13, and a ventilation path is formed from the front suction port 20 and the side suction port 22 through the evaporator 4 to the blower outlet 21. Thereby, the suction from the front surface of the cabinet 1 and the forward blowing can be realized.

  The exhaust heat chamber 14 projects to the back side of the cooling chamber 13, and an exhaust port 24 is formed on the upper surface of the exhaust heat chamber 14. One end of a bellows-like duct 7 is attached to the exhaust port 24. The other end of the duct 7 is attached to the opening of the wall 25, and the exhaust heat chamber 14 communicates with the outside via the duct 7. Therefore, in the exhaust heat chamber 14, a ventilation path is formed from the front suction port 20 and the side suction port 22 through the condenser 3 to the exhaust port 24. This ventilation path communicates with the duct 7 and communicates with the outside.

  One end of the duct 7 is rotatable and detachable with respect to the exhaust port 24. That is, the fan guard 27 is rotatably fitted in the exhaust port 24 formed in the casing 26 of the exhaust fan 6. A duct connector 28 is provided at one end of the duct 7. The duct connector 28 is detachably attached to the fan guard 27, but the duct connector 28 is attached so as not to rotate with respect to the fan guard 27. As the duct 7 and the fan guard 27 rotate integrally, the duct 7 and the cabinet 1 rotate relatively.

  The other end of the duct 7 is detachably attached to the opening of the wall 25. That is, the mounting panel 31 for mounting the duct 7 is fixed to the window frame using the window 30 in the opening. The window 30 may be either a raising / lowering window or a sliding window, and the length of the mounting panel 31 can be varied according to the size of the window 30.

  A duct holder 33 is fitted into the attachment port 32 of the attachment panel 31, and a duct connector 34 provided at the other end of the duct 7 is detachably attached to the duct holder 33. By attaching the duct connector 34 to the duct holder 33, the duct holder 33 is attached so as not to be detached from the attachment panel 31. A rain guard 35 is attached to the outdoor side of the duct holder 33 so that rain does not enter. Therefore, by removing the duct connector 34 from the duct holder 33, the duct 7 can be removed from the window 30, and the duct holder 33 can also be detached from the mounting panel 31. Here, when the duct 7 is removed, the attachment port 32 of the attachment panel 31 remains open, so that a cover for closing the attachment port 32 is provided on the attachment panel 31. In FIG. 1, reference numeral 36 denotes a ventilation hole to which a ventilation fan can be attached.

  A wheel 40 is attached to the bottom surface of the cabinet 1. Therefore, this air conditioner can be moved and can be moved indoors with the duct 7 being extendable. Further, by removing the duct 7, the air conditioner can be carried into another room and can be used in any place.

  By the way, in the evaporator 4, when performing heat exchange of indoor air, the water | moisture content in air will condense and drain water will generate | occur | produce. A drain pan 41 that receives drain water is provided below the evaporator 4, and a drip pan 42 is provided below the drain pan 41. The drain pan 41 is accommodated in the dropping tray 42, and the dropping tray 42 is attached to the cabinet 1. The drain water dripped onto the drain pan 41 flows down to the dropping tray 42 and further flows from the dropping tray 42 to the condenser 3. The drain water evaporates while cooling the condenser 3 when passing through the condenser 3. A drain tray 43 is provided below the condenser 3, and drain water that has flowed through the condenser 3 accumulates in the drain tray 43. The drain tray 43 is placed on the bottom of the heat exhaust chamber 14, and the drain tray 43 is formed with a drain hole 44 and plugged. When the stopper is removed, drain water is discharged.

  And in order to process the drain water collected in the drain pan 43, the drain water is again led to the condenser 3 by the suction pump 8, and is evaporated. The suction pump 8 is installed in the drain tray 43, the drain hose 45 is connected to the suction pump 8, and the drain hose 44 is connected to the dropping tray 42. The suction pump 8 sucks the drain water and sends it to the dropping tray 42. The drain water flows down from the dropping tray 42 and is evaporated by the heat of the condenser 3. Thus, by draining the drain water, waste water treatment can be performed inside without draining outside. In the middle of the drain hose 45, a cock for switching the flow path is provided, and a drain pipe 46 is connected. By turning the cock, the flow path is switched to a flow path that circulates toward the dropping dish 42 and a flow path that is drained toward the drain pipe 46.

  The air conditioner includes a control device that drives and controls the compressor 2, the blower fan 5, the exhaust fan 6, and the suction pump 8. A control device including a microcomputer is built in the cabinet 1 and executes various operations such as a cooling operation, a dehumidifying operation, and a ventilation operation in response to an operation signal from a remote controller (not shown) or an operation switch provided in the cabinet. In addition, the front panel 10 is provided with a display 50 made of LEDs or the like, and the control device controls the lighting of the display 50 according to various operations, or as a warning when the drain water is full. Control such as lighting or blinking of the display 50 is performed.

  In the cooling operation, room air is sucked from the front suction port and the side suction port by driving the blower fan 5, and passes through the evaporator 4 from the gap 16 of the front panel 10. At this time, the sucked air is cooled by the evaporator 4 and becomes cold air. The cold air is blown out into the room from the air outlet 21.

  On the other hand, by driving the exhaust fan 6, room air is sucked from the front suction port 20 and the side suction port 22 and passes through the condenser 3 from the gap 16 of the front panel 10. At this time, the sucked air is warmed by the condenser 3 and becomes warm air. The warm air passes through the duct 7 from the exhaust port 24 and is discharged outside the room.

  The drain water generated from the evaporator 4 by the cooling operation flows down and accumulates in the drain tray 43. When the drain water is accumulated up to a predetermined water level, the suction pump 8 is operated to draw up the drain water in the drain receiving tray 43 and guide it to the dropping tray 42. The drain water drawn up flows down along the surface of the condenser 3 and evaporates. The drain water that has not evaporated is collected in the drain tray 43, pumped up again, and circulated until it evaporates.

  In the dehumidifying operation, the compressor 2, the blower fan 5, the exhaust fan 6, and the suction pump 8 are driven and controlled as in the cooling operation. However, the drain water collected in the drain tray 43 is not circulated, but the drain water is discharged from the drain pipe 46 by the operation of the cock. In this case, the duct 7 is removed. The air dehumidified through the exhaust heat chamber 14 is exhausted from the exhaust port 24 into the room. Therefore, dehumidification can be performed without changing the indoor temperature.

  In the ventilation operation, the compressor 2, the blower fan 5 and the suction pump 8 are stopped, and only the exhaust fan 6 is driven. Indoor air sucked from the front of the cabinet 1 is discharged from the heat exhaust chamber 14 through the duct 7 to the outside. At this time, outdoor air enters from the ventilation hole 36 of the wall 25, and ventilation of the room is performed.

  Next, the drain pan 41 and the dropping pan 42 will be described. 5 is a front sectional view showing the configuration of the drain pan and the dropping pan, FIG. 6 is a front sectional view showing the configuration of the drain pan and the dropping pan, FIG. 7 is a plan view of the drain pan, and FIG. 8 is a front sectional view of the drain pan. 9 is a plan view of the dropping tray, and FIG. 10 is a front sectional view of the dropping tray.

As shown in FIGS. 5 and 6, the drain pan 41 is attached to the dropping tray 42, and the drain pan 41 serves as a lid of the dropping tray 42. The drain pan 41 is arranged below the evaporator 4, for supporting the evaporator 4. The dropping tray 42 is disposed immediately above the condenser 3. Thereby, the condenser 3 and the evaporator 4 are thermally insulated. Further, the claw portion 66 formed on the side surface of the drain pan 41 is engaged with the notch hole 79 formed on the side surface of the dropping tray 42 so that both are integrated. This notch hole 79 also serves as an overflow drain for the dropping tray 42.

  As shown in FIGS. 7 and 8, the drain pan 41 is formed in a box shape that is long on the left and right sides with an open top surface. The drain pan 41 and the drain water generated from the evaporator 4. A drain water receiving portion 61 for receiving the water.

  The placement unit 60 is formed along the wall surfaces on the left and right sides and the back side, and is a flat surface inclined toward the drain water receiving unit 61. The drain water receiving portion 61 is formed one step lower than the placement portion 60. The bottom surface of the drain water receiving portion 61 is inclined toward a certain point, and a drop port 62 is formed at the lowest point.

  The drop port 62 is formed in a cylindrical shape and protrudes downward from the bottom surface. The lower end of the drop port 62 is cut obliquely so that a water film cannot be formed by surface tension at the exit of the drop port 62.

  A support member 63 that supports the evaporator 4 is formed in the drain water receiving portion 61. A plurality of support members 63 are formed in a rib shape along the longitudinal direction of the drain pan 41, and each support member 63 is arranged in a staggered pattern. The height of the support member 63 is the same as the placement unit 60. Thereby, since the evaporator 4 is supported not only by the mounting part 60 but by the support member 63, it is fixed without tilting. The support member 63 also plays a role of guiding drain water flowing down from the evaporator 4 toward the drop port 62.

  On the bottom surface of the drain pan 41, two legs 64 that support the drain pan 41 and a plurality of distribution members 65 for maintaining the strength of the drain pan 41 itself are formed. The legs 64 are formed along the lateral direction at the left and right end portions of the drain water receiving portion 61.

  The distribution members 65 are rectangular ribs when viewed from the front, and are formed in two rows along the longitudinal direction outside the bottom surface of the drain water receiving portion 61. The lower end of the rib 65 is horizontal and is almost the same height as the lower end of the leg. The rib 65 can provide a reinforcing effect on the weight of the evaporator 4.

  Next, as shown in FIG. 9 and FIG. 10, the dropping dish 42 is formed in a box shape that is long on the left and right with the upper surface opened, and has a stepped portion 77 on which the drain pan 41 is placed. The step portion 77 is formed along the wall surfaces on the left and right sides and the back side, and is formed one step higher in order to place the placement portion 60 of the drain pan 41.

  A supply port 70 connected to the suction pump 8 serving as supply means via a drain hose 45 is provided on the back surface of the dropping tray 42. The supply port 70 is formed to protrude in a cylindrical shape. The dropping tray 42 is partitioned into a water receiving portion 78 that receives drain water from the drain pan 41 and a water supply portion 71 through which drain water that has entered from the supply port 70 flows.

  A guide wall 73 is formed so that drain water flows from the supply port 70 to the water supply unit 71. The guide wall 73 is curved so as to change the flowing direction. A seal member 76 is provided between the drain pan 41 and the drip pan 42. The sealing member 76 having elasticity is attached to the lower side of the bottom surface of the drain pan 41 and is in close contact with the guide wall 73. Thereby, even if the drain water supplied from the suction pump 8 spouts vigorously, it can be prevented from spilling from the drip pan 42 beyond the guide wall 73.

  A plurality of water passage holes 72 are formed on the bottom surface of the water supply unit 71. The water passage holes 72 are formed densely with distance from the supply port 70. In addition, the rib 65 of the drain pan 41 is disposed on the water passage hole 72. The rib 65 abuts on the periphery of the water passage hole 72, and a part of the rib 65 protrudes from the water passage hole 72. Due to the protruding rib 65, the surface tension of the drain water in the water passage hole 72 becomes weak, and it becomes easy to drip without forming a water film.

  Further, the water passage hole 72 is formed such that the upper opening area is wider than the lower opening area. That is, the water passage hole 72 is a mortar-shaped hole. Due to this mortar shape, when the supplied drain water is dripped from the water passage hole 72, the force that the drain water tries to flow down along the slope works, so that the action of the surface tension can be weakened. A film cannot be formed and can be dropped efficiently.

  The water receiving portion 78 is divided by a high wall 75 and a low wall 74. A drop hole 81 is formed on the bottom surface of the water receiving portion 78. The drop hole 81 is formed in an elliptical shape and has a larger area than the water passage hole 72. Further, the inclined surface at the lower end of the drop port 62 faces the high wall 75 side, and the low wall 74 serves as a partition from the water supply unit 71.

  An overflow portion 80 having a water passage hole 72 on the bottom surface is provided around the water receiving portion 78 and the water supply portion 71 so that drain water may overflow. Thus, for example, even if the water receiving portion 78 and the water supply portion 72 of the water supply portion 71 are blocked by dust or dust and the drain water overflows, the drain water is discharged from the water passage hole 72 of the overflow portion 80 provided in the periphery. Drip into the condenser 3.

  With the above configuration, the drain water dripped from the evaporator 4 to the drain pan 41 gathers in the dropping port 62 through the drain water receiving portion 61 and flows down to the dropping tray 42. At this time, the drain water flowing down from the drop port 62 flows down along the low wall 74 side of the drop port 62. Therefore, when the drain water flowing down from the drop port 62 falls, it does not rebound and exceed the high wall 75.

  Even if drain water accumulates in the water receiving part 78, since the wall on the water supply part 71 side is the low wall 74, the drain water may spill into the water supply part 71 and drop from the water passage hole 72 of the water supply part 71. it can. Thereby, the drain water flowing down from the drop port 62 can be efficiently guided to the condenser 3.

  The drain water that has flowed down to the dropping tray 42 flows down to the condenser 3 from a drop hole 81 formed below the drop port 62. The drain water that has not been vaporized by the heat of the condenser 3 flows down to the drain tray 43.

  The drain water collected in the drain tray 43 is pumped up by the suction pump 8 and flows into the dropping tray 42 from the supply port 70. The drain water that has flowed in hits the guide wall 73. At this time, since it is covered with the drain pan 41, the drain water does not get over the guide wall 73 and leak to the outside of the dropping tray 42. The drain water is guided to the guide wall 73 and flows toward the water supply unit 71. The drain water that has flowed into the water supply unit 71 is guided along the rib 65 to the water passage hole 72. At this time, since the drain water does not have surface tension, the drain water does not form water droplets but flows into the water passage holes 72.

  The drain water has a large amount of water on the side close to the water supply port 70, and the amount of water decreases as it goes away. However, since the water passage holes 72 are formed on the side farther than the side near the water supply port 70, the condenser 3 The amount dripped onto the liquid does not change. That is, the dropping tray 42 can uniformly drop the drain water onto the condenser 3.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. For example, in the present invention, the rib shape is formed along the longitudinal direction of the drain pan, but may be formed in a pin shape. In this case, the rib is disposed so as to be inserted into the water passage hole when the drain pan is accommodated in the dropping pan. Thereby, the surface tension of the drain water is weakened by the pin, and an effect that the drain water is easily dropped can be obtained.

  Further, although the rib is arranged so that a part thereof is applied to the water passage hole, the rib may be arranged so as to cross the water passage hole. Moreover, a clearance gap may be formed between the lower end of a rib and the surface of a water supply part, for example, where a rib and a water flow hole do not contact. Further, a plurality of ribs may be provided instead of two. Thereby, drain water can be guide | induced to more water flow holes, and surface tension can be weakened.

  Moreover, in this invention, although a supply port exists in the back surface of a dropping tray, you may provide in one side surface. In this case, since the supplied drain water does not spill from the guide wall, no sealing member is provided above the supply port. Therefore, cost reduction can be achieved.

  Moreover, it is good also as a structure where the drain pan and the dropping pan were isolate | separated. In this case, a lid member that covers the upper surface of the dropping tray may be provided, and a distribution member may be provided on the lid member.

  Moreover, you may supply drain water directly to a dripping pan from a drain pan. In this case, the drain water from the evaporator may be temporarily stored in the drain pan. By temporarily storing drain water in the drain pan, it is possible to give a momentum to pour into the dropping pan, and to drain the drain water evenly into the dropping pan.

  Furthermore, although this invention uses the suction pump for an integrated air conditioner, it is not this limitation in particular. For example, it can be used for a refrigerator equipped with a refrigeration cycle as in an air conditioner, or a washing machine for pouring remaining hot water in a bath.

Side surface sectional view which shows the whole structure of the integrated air conditioner which concerns on this invention Plan sectional view of integrated air conditioner The perspective view which looked at the appearance of the integrated air conditioner from the front side The perspective view which looked at the appearance of an integrated air conditioner from the back side Front sectional view showing the configuration of the drain pan and drip pan Front sectional view showing the configuration of the drain pan and drip pan Top view of drain pan Front sectional view of drain pan Top view of dripping pan Front cross-sectional view of dripping pan

Explanation of symbols

3 Condenser 4 Evaporator 41 Drain pan 42 Drip pan 60 Placement part 61 Drain water receiving part 62 Drop port 63 Support member 64 Leg 65 Rib 66 Claw part 70 Supply port 71 Water channel 72 Water passage hole 73 Guide wall 74 Low wall 75 High Wall 76 Sealing member 77 Stepped portion 78 Receiving portion 79 Notch hole 80 Overflow portion 81 Falling hole

Claims (6)

In an air conditioner that drops and evaporates drain water generated in an evaporator to a condenser, a dropping tray for uniformly dropping the drain water to the condenser, and supplying the drain water to the dropping tray Supply means , an evaporator is provided above the dropping tray, a drain pan is disposed on the lower side of the evaporator, and a plurality of water passage holes for dropping the drain water into the condenser are provided in the dropping tray. A lid member is provided to prevent the drain water supplied to the dripping pan from overflowing, the drain pan is a lid member, and the drain water is placed on the bottom surface of the drain pan. An air conditioner characterized in that a distribution member for guiding the air is provided. The distribution member is a rib formed on the bottom surface of the drain pan, and the rib is arranged along a direction in which drain water entering from the supply port flows, and the rib spreads the drain water over the entire dropping plate. The air conditioner according to claim 1 . The air conditioner according to claim 1 or 2 , wherein a part of the distribution member is disposed so as to pass through the water passage hole. The supply port for supplying drain water is formed in the drip pan, and the water passage holes are densely distributed in a region far from the region near the supply port. Air conditioner. The guide wall is formed so that drain water flows from the supply port to the dropping tray, a sealing member is provided between the dropping tray and the lid member, and the sealing member is in close contact with the guide wall. The air conditioner in any one of 1-4 . The air conditioner according to any one of claims 1 to 5 , wherein the water passage hole is formed such that the upper opening area is wider than the lower opening area.

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