JP5192558B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including a heat exchanger in a housing.

  In the air conditioner, the condensed water generated in the heat exchanger in the housing is received by a drain pan located below the heat exchanger, and drained out of the machine from the drain pan. Further, piping such as a U-bend pipe which is a meandering portion of the refrigerant pipe is exposed at the side of the heat exchanger, and these pipes are also condensed to generate condensed water. Therefore, drainage treatment of condensed water generated from these pipes is also performed.

  Conventionally, a side plate for receiving piping is provided at the side of the heat exchanger, and condensed water generated from the piping is guided to the side plate, guided to a drain pan, and drained outside the machine. Also, on the side of the heat exchanger, along with piping, an inlet side auxiliary pipe that guides the refrigerant to the heat exchanger, and the refrigerant from the heat exchanger to other refrigeration cycle components (compressor or outdoor heat exchanger). A supply outlet side auxiliary pipe is provided. Patent Document 1 shows an example in which these refrigerant inlet / outlet pipes and piping are arranged close to the side portion of the heat exchanger.

JP-A-2001-90986

  By the way, since the refrigerant inlet / outlet pipe is covered with a heat insulating material to prevent the condensation, the refrigerant inlet / outlet pipe has no risk of condensation on the surface of the heat insulating material. Since the pipes and the refrigerant inlet / outlet pipe are in close contact with each other, there is a risk that the condensed water (condensate) generated in the pipes will be transmitted to the surface of the insulation covering the refrigerant inlet / outlet pipe and leak outside the machine. is there.

  In particular, since the refrigerant inlet / outlet pipe is disposed on the rear plate side of the casing, it may leak along the indoor wall to which the indoor unit is attached.

  In view of the above, an object of the present invention is to provide an air conditioner having a structure that can prevent condensed water from leaking out of the apparatus due to contact between piping on the side of a heat exchanger and a refrigerant inlet / outlet pipe. Yes.

To achieve the above object, the present invention provides a heat exchanger in which a front-side heat exchanger and a rear-side heat exchanger are arranged in an inverted V shape in a side view in a housing, and the heat exchanger A pipe provided on the side and a side plate provided on the side of the heat exchanger so as to accommodate the refrigerant inlet / outlet pipe, and the pipe on the side of the heat exchanger and the refrigerant are provided on the side plate. A partition member made of a plate-like wall material for partitioning between the inlet / outlet pipes is provided, and the refrigerant inlet / outlet pipes are arranged along the side surfaces of the heat exchanger and covered with a heat insulating material, and the lowest position on the front side thereof Connected to the piping of the heat exchanger on the front side, led upward along the side surface of the heat exchanger on the front side, and arranged at a position higher than any of the piping at the uppermost position, the uppermost position disposed toward a horizontal or downward to the rear side of the housing from the front Partition member, the refrigerant inlet and outlet pipes from the uppermost position in the vertical direction before Symbol piping and the refrigerant entrance pipe is characterized in that it is disposed toward the rear side of the housing is a pipe.

  According to the above configuration, it is possible to avoid contact between the refrigerant inlet / outlet pipe and the piping by the partition member, so that the condensed water generated in the heat exchanger piping is drained out of the machine through the refrigerant inlet / outlet pipe. Can be prevented.

Here, the refrigerant inlet / outlet pipes are arranged along the side surface of the heat exchanger and covered with a heat insulating material, and at the uppermost position, the refrigerant inlet / outlet pipes are arranged at positions higher than any of the pipes, and the partition member is at least A configuration is adopted in which the pipes and the refrigerant inlet / outlet pipe are arranged from the uppermost position in the vertical direction toward the back side of the casing where the refrigerant inlet / outlet pipe is piped .

  According to the above configuration, in the portion of the refrigerant inlet / outlet pipe that is inclined downward from the highest position to the back side, the condensed piping and the refrigerant inlet / outlet pipe do not contact each other. It is possible to prevent leakage. The front side of the refrigerant inlet / outlet pipe is also inclined downward from the highest position, but even if this part comes into contact with the piping, the condensed water will flow out of the machine from the drain pan at the lower front, so there is no problem. .

  Further, the refrigerant inlet / outlet pipe is usually covered with a heat insulating material. In addition, the side plate is formed with a partition wall that is partitioned from another housing portion (for example, an electrical component housing portion) on the outer side thereof, and the refrigerant inlet / outlet covered with a heat insulating material between the partition wall and the partition member It can be set as the structure which clamps a pipe.

  According to the above configuration, since the partition member separates the piping of the heat exchanger and the refrigerant inlet / outlet pipe covered with the heat insulating material, the refrigerant inlet / outlet pipe is positioned and is displaced from the piping outlet portion of the housing. Therefore, the work such as correction of the refrigerant inlet / outlet pipe during product assembly can be omitted.

As the partition member, can it to configure a plate-like wall member separating the pipes for insulation and heat exchanger of the refrigerant inlet and outlet pipes.

More wall material of such a simple configuration, to prevent contact between the piping and the refrigerant inlet and outlet pipes of the side of the heat exchanger, condensed water generated in the pipes is prevented from leaking to the outside of the apparatus be able to.

  As described above, according to the present invention, the partition member can avoid the surface of the inlet / outlet pipe of the heat exchanger from coming into contact with the piping on the side surface of the heat exchanger, and the piping on the side of the heat exchanger It is possible to prevent the condensed water generated in the above process from being discharged outside the machine through the refrigerant inlet / outlet pipe.

It is a perspective view which shows the indoor unit of the air conditioner which is embodiment of this invention. It is a longitudinal cross-sectional view which shows the inside of an indoor unit. It is a perspective view which shows the state which removed the front panel of the indoor unit. It is a perspective view which shows the state which removed the filter unit from the state of FIG. It is a perspective view of a heat exchanger with a side plate. It is a front view of an air harmony machine in the state where a front panel was removed. It is a perspective view of the side plate of a heat exchanger. It is a perspective view of the side plate of the heat exchanger as a reference example .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, an indoor unit of a separate type air conditioner will be described as an example. In FIG. 1, the front panel 10 side is the front side, the back plate 7 side is the back side or the back side, and in the following description, the direction from the front panel 10 toward the back plate 7 is the front-rear direction, and the front panel 10 is the front side. The horizontal direction is the left-right direction.

  This type of air conditioner includes a heat exchanger housed in an indoor unit, a compressor, a four-way valve, an outdoor heat exchanger, and a throttle device (both not shown) housed in an outdoor unit (not shown). The refrigerant pipes are connected to form a refrigeration cycle, and various operation modes such as cooling, heating, and dehumidification can be executed.

  As shown in FIG. 2, the indoor unit includes a ventilation path 4 extending from the suction port 2 to the outlet 3 in the housing 1, and a heat exchanger 5 disposed on the upstream side of the wind flow in the ventilation path 4. And a blower fan (cross flow fan) 6 disposed on the downstream side of the wind flow with respect to the heat exchanger 5 in the ventilation path 4.

  As shown in FIG. 1, the housing 1 is formed in a box shape by combining a back plate 7, left and right covers 8, 9, a front panel 10 and a drain pan unit 11, and is made of a synthetic resin of an indoor unit. Constitutes the exterior.

  The rear plate 7 is formed in a box shape with an open front so as to hold a part of the cross flow fan 6 and the heat exchanger 5 inside the housing, and a refrigerant inlet / outlet pipe connected to the heat exchanger 5 on the rear side. A concave accommodating portion (not shown) for accommodating 13 is formed, and a flat portion attachable to the indoor wall is provided. On the front side of the back plate 7, a rear guider 12 that guides air blown from the cross flow fan 6 to the blowout port 3 is provided. Furthermore, the left and right side walls (not shown) of the back plate 7 rotatably support the rotating shaft portion of the cross flow fan 6.

  The left and right covers 8 and 9 (the right cover 8 and the left cover 9) of the housing 1 are disposed on both the left and right sides of the back plate 7. Piping that protrudes from the side of the heat exchanger 5 and the motor and electrical parts of the crossflow fan 6 in the space formed between the left and right side walls (not shown) of the back plate 7 and the left and right covers 8 and 9. The class 14 and the refrigerant inlet / outlet pipe 13 can be accommodated.

  In this example, as shown in FIG. 6, a motor housing portion 16 of the fan motor 15 is formed outside the right side wall in a front view, and an electrical component housing portion 17 is further formed on the right side thereof. Further, a side plate 18 that accommodates the piping 14 that protrudes from the side surface of the heat exchanger 5 and the refrigerant inlet / outlet pipe 13 from the front surface to the upper side of the motor housing portion 16 is provided.

  As shown in FIG. 2, the heat exchanger 5 is provided in the vicinity of the suction port 2 on the upstream side of the ventilation path 4. In the heat exchanger 5, a heat exchanger 5 a on the front side and a heat exchanger 5 b on the back side are arranged in an inverted V shape in a side view.

  In each of the heat exchangers 5a and 5b, the refrigerant tubes are arranged in a meandering manner, and a large number of fins are provided orthogonal to the refrigerant tubes. In this example, as shown in FIG. 5, a part of a meandering flow path is formed as the piping 14 projecting laterally from the side surface mounting plate 28 of each heat exchanger 5 a, 5 b, and the side surface mounting plate 28. A U-shaped bend pipe 14a protruding from the side, a U-shaped bend pipe 14b connecting refrigerant flow paths between adjacent heat exchangers 5a and 5b, and temperature detection for detecting the temperature of the heat exchanger 5 An element housing tube 14c is provided.

  Furthermore, the heat exchanger 5 (5a, 5b) is connected to an inlet pipe for flowing in the refrigerant before heat exchange and an outlet pipe from which the heat-exchanged refrigerant exits. In each pipe, the flow direction of the refrigerant is reversed between the cooling operation and the heating operation. For example, the phenomenon in which condensation occurs in the pipes of the present case is when the heat exchanger 5 acts as an evaporator. This is mainly during cooling operation, where 13b shown in FIG. 5 is the inlet side and 13a is the outlet pipe. Also, each pipe is for connecting to a piping pipe provided between the indoor unit and the outdoor unit at the time of installation, and is called an auxiliary pipe (an inlet side auxiliary pipe 13b, an outlet side auxiliary pipe 13a).

  Further, in the heat exchangers 5a and 5b, in order to form a plurality of flow paths, a Y-shaped branch pipe 19 that joins the refrigerant flow paths from the outlet side is provided. The branch pipe 19 is connected to the terminal of the auxiliary pipe 13a on the outlet side for supplying the refrigerant.

  Moreover, the inlet of the refrigerant pipe of the heat exchanger 5 is formed on the same side as the outlets of the heat exchangers 5a and 5b. The plurality of flow paths are converged on the inlet side of the refrigerant pipe, and one refrigerant pipe inlet is formed on the side surface portion of the heat exchanger 5. A U-shaped tube 20 is connected to the refrigerant tube inlet. The U-shaped pipe 20 is bent in an inverted L shape from the uppermost position of the piping 14, further bent in a U-shape at a lower position and extended upward, and its terminal is extended downward. It is connected to the terminal of the pipe 13b.

  The auxiliary pipe 13b on the inlet side and the auxiliary pipe 13a on the outlet side are arranged along the side surface of the heat exchanger 5 and are covered with the heat insulating material 36 so that the outer surface is not condensed. , 13b constitute a refrigerant inlet / outlet pipe 13. The refrigerant inlet / outlet pipe 13 is connected to the branch pipe 19 and the U-shaped pipe 20 of the piping 14 at the lowermost position thereof, and guided upward along the side surface of the heat exchanger 5. It arrange | positions in a position higher than it, and it curves so that it may go along the back side of the backplate 7 from the uppermost position. Arranged in parallel with the heat exchanger 5 along the back plate 7.

  In addition, in this example, as shown in FIG. 5, the example in which the refrigerant inlet / outlet pipe 13 is horizontally directed from the uppermost position toward the back side is shown, but the present invention is not limited thereto, and the arrangement may be made downward from the uppermost position. .

  Under the heat exchanger 5a on the front side, a drain pan 25 having a U-shaped cross-section, which is a constituent member of the drain pan unit 11, is disposed. The right side portion of the drain pan 25 extends to the lower side of the side plate 18 and is set to a length that can receive condensed water from the side plate 18. A rear drain pan 26 formed on the rear side of the rear guider 12 of the rear plate 7 is disposed below the rear heat exchanger 5b. Although not shown, the drain pan 26 on the back side is also extended on the right side so as to receive condensed water dripping from the pipes on the side plate 18.

  As shown in FIG. 7, the side plate 18 is an integrally molded product made of synthetic resin, and is formed in an inverted V shape in a side view so as to follow the reverse V-shaped heat exchangers 5 a and 5 b in a side view. Yes. The side plate 18 is attached to the side surface mounting plate 28 of the heat exchanger 5 with screws or the like, and is also fixed to the back plate 7 with screws or the like, and is housed and fixed in the housing 1. The side plate 18 accommodates piping 14 such as a U-bend pipe 14 a protruding from the heat exchanger 5 and a refrigerant inlet / outlet pipe 13 on the surface side thereof. Further, since the side plate 18 is partitioned from the adjacent electrical component accommodating portion 17 (see FIG. 6), a partition wall 29 is erected on the electrical component accommodating portion side, and the condensed water generated in the piping 14 is on the electrical component side. It is divided so as not to flow out.

  Further, on the surface side of the side plate 18, as shown in FIG. 7, a left-side piping housing portion 18 a that houses piping 14 such as the U-bend pipe 14 a of the heat exchanger 5 and the refrigerant inlet / outlet pipe 13 are housed. The pipe accommodating part 18b and the partition member 30 which partitions both the accommodating parts 18a and 18b are provided.

  As shown in FIGS. 5 to 7, the partition member 30 is composed of a plate-like wall material having an L shape in plan view that partitions between the piping 14 such as the U-bend pipe 14 a and the refrigerant inlet / outlet pipe 13. The partition member 30 made of a plate-like wall material is parallel to the side surface mounting plate 28 and the partition wall 29 of the heat exchanger 5. Further, the rear end portion of the wall material is bent toward the piping housing portion 18a so that the piping 14 is prevented from contacting the refrigerant inlet / outlet pipe 13 as much as possible.

  The partition member 30 is located at the top of the side plate 18 whose front end is formed in a semicircular arc shape in a side view, and the partition member 30 is formed on the rear side of the side plate 18. Since the refrigerant inlet / outlet pipe 13 is connected to the branch pipe 19 and the U-shaped pipe 20 on the front side of the top of the side plate 18, it is difficult to provide the partition member 30, so the partition member 30 is at least behind the top of the side plate 18. Provided on the side. For this reason, the piping 14 of the heat exchanger 5 and the refrigerant inlet / outlet pipe 13 do not contact from the uppermost position to the back side of the refrigerant inlet / outlet pipe 13.

  The front side of the refrigerant inlet / outlet pipe 13 is inclined downward from the uppermost position, but in this part, even if the refrigerant inlet / outlet pipe 13 contacts the piping 14 and the condensed water is transmitted to the refrigerant inlet / outlet pipe 13, There is no problem because the water is drained to the drain pan 25 at the front lower side.

  The interval width of the pipe accommodating portion 18b formed by the partition member 30 and the outer partition wall 29 is set so as to sandwich the refrigerant inlet / outlet pipe 13 covered with the heat insulating material 36. Since the refrigerant inlet / outlet pipe 13 is sandwiched between the partition member 30 and the partition wall 29, the refrigerant inlet / outlet pipe 13 can be positioned.

  Further, in this example, since the side plate 18 is formed in a semicircular arc shape when viewed from the side, a semicircular arc receiving portion (not shown) is formed on the back surface of the side plate 18, and one of the fan motors 15 of the cross flow fan 6. It also functions as a motor cover that covers the part. That is, the side plate 18 accommodates the piping 14 and the refrigerant inlet / outlet pipe 13 protruding from the side of the heat exchanger 5, and constitutes a part of the motor accommodating portion 16 on the back side thereof, and the fan motor 15. It also functions as a motor cover that covers about 1/3 of the front upper side.

  As shown in FIG. 1, the air inlet 2 is formed in the top surface portion of the housing 1 surrounded by the front panel 10 and the back plate 7, and the air sucked into the ventilation path 4 of the housing 1 on the back surface side thereof. An air filter 21 for removing dust from the air is disposed.

  Further, as shown in FIG. 2, a cleaning unit 24 including a brush 22 and a dust box 23 for cleaning the air filter 21 is provided from the housing 1 between the front panel 10 and the internal heat exchanger 5. Built-in detachable. The air filter 21 is incorporated in the guide path of the cleaning unit 24 and is movable along the suction port 2. The air filter 21 can be taken out from the front side by opening the front panel 10.

  The drain pan unit 11 includes a peripheral member 31 that forms the air outlet 3 at the center, a horizontal louver 32 that is rotatably provided in front of the air outlet 3 and closes the front opening in a closed posture, and a rear side of the horizontal louver 32. And a plurality of vertical louvers 34 slidably disposed behind the horizontal louver 32 and arranged in the outlet 3 to rectify the wind from the cross flow fan 6.

  The lower member 35 of the peripheral member 31 constitutes the lower exterior of the housing 1, and its rear end portion is locked to the front side portion of the back plate 7, and the peripheral member 31, that is, the drain pan unit 11 is screwed. Is fixed to the back plate 7 of the housing 1 and can be removed by loosening screws during maintenance of the cross flow fan 6. The upper surface of the lower member 35 is a blowing guide surface that is gently inclined downward and forward so as to be continuous with the rear guider 12 of the back plate 7.

  The cross flow fan 6 includes a plurality of blades having a predetermined length arranged in a cylindrical shape to form an impeller, and rotational shafts provided at both left and right ends thereof are rotatably supported on left and right side walls of the housing 1. The air sucked from the heat exchanger side is blown toward the blowout port 3 along the ventilation path wall from the bottom to the front. A fan motor 15 is disposed on the right side of the cross flow fan 6 when viewed from the front.

  In the above configuration, the heat exchanger 5 of the indoor unit acts as an evaporator during the cooling operation (or during the dehumidifying operation). The refrigerant pipe is cooled by the refrigerant flowing into the heat exchanger 5, and condensation is formed on the fins of the heat exchanger 5 and the surfaces of the pipes 14 protruding sideways from the heat exchanger 5. Condensed condensed water falls to the lower drain pan 25 and is drained outside the apparatus. Condensed water condensed on the piping 14 on the side of the heat exchanger 5 also falls along the side plate 18 to the drain pan 25. Further, among the piping 14 on the side of the heat exchanger, condensed water is also generated from the piping located on the rear rear side with respect to the uppermost position, and these condensed water is transferred to the rear side through the side plate 18. It falls on the drain pan 26 (see FIG. 2) and is discharged out of the machine.

  At this time, since the piping 14 and the refrigerant inlet / outlet pipe 13 are disposed close to the side plate 18, the piping 14 may come into contact with the heat insulating material 36 of the refrigerant inlet / outlet pipe 13. Since the partition member 30 made of a plate-like wall material is formed on the rear side from the position, it is possible to avoid contact between the piping 14 and the refrigerant inlet / outlet pipe 13 or the heat insulating material covering the refrigerant inlet / outlet pipe. . Therefore, it is possible to prevent the condensed water generated in the piping 14 of the heat exchanger 5 from being discharged outside the apparatus through the heat insulating material 36 of the refrigerant inlet / outlet pipe 13.

  Further, since the refrigerant inlet / outlet pipe 13 on the side of the heat exchanger 5 is sandwiched and positioned between the partition member 30 and the outer partition wall 29, a pipe outlet (not shown) of the housing 1 is arranged. Therefore, it is possible to eliminate work such as piping correction of the inlet / outlet pipe 13 during product assembly. That is, if the position accuracy of the branch pipe 19 connected to the refrigerant inlet / outlet pipe 13 is low, a change in the flow rate of the branched refrigerant may occur, and a desired capability may not be obtained. Therefore, the piping layout of the branch pipe 19 becomes important. In this example, since the refrigerant inlet / outlet pipe 13 is positioned between the partition wall 29 and the partition member 30, a desired cooling / heating capacity can be obtained.

Note that the present invention is not limited to the above-described embodiment, and it is needless to say that many modifications and changes can be made within the scope of the present invention. For example, the partition member 30 is not limited to the plate-like wall material shown in FIG. 7, and may be any member as long as the partition member is disposed toward the back side of the housing. As a reference example, as shown in FIG. 8, a protrusion 30 a that partitions between the heat insulating material 36 of the refrigerant inlet / outlet pipe 13 and the piping 14 of the heat exchanger 5 is illustrated.

  Further, the partition member 30 may be provided not only on the rear side but also on the front side from the top of the side plate 18. By doing in this way, even if the refrigerant inlet / outlet pipe 13 is not bent along the top of the side plate 18 and the descending portion of the refrigerant inlet / outlet pipe 13 exists in front of the top, the piping 14 is connected to the refrigerant inlet / outlet pipe. Since the condensed water generated in the piping 14 does not contact the refrigerant inlet / outlet pipe 13 or the heat insulating material, the reliability is improved.

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Inlet 3 Outlet 4 Ventilation path 5 Heat exchanger 5a Front side heat exchanger 5b Rear side heat exchanger 6 Blower fan 6a Rotating shaft (motor shaft)
7 Back plate 8 Right cover 9 Left cover 10 Front panel 11 Drain pan unit 12 Rear guider 13 Refrigerant inlet / outlet pipe 13a Outlet side auxiliary pipe (refrigerant outlet during cooling operation)
13b Auxiliary pipe on the inlet side (refrigerant inlet during cooling operation)
14 piping 14a U bend pipe 14b transfer bend pipe 14c temperature detecting element accommodating pipe 15 fan motor 16 motor accommodating part 17 electrical component accommodating part 18 pipe guide side plate 18a piping accommodating part 18b pipe accommodating part 19 branch pipe 20 U-shaped pipe 21 Air filter 22 Brush 23 Dust box 24 Cleaning unit 25 Drain pan 26 Rear side drain pan 28 Mounting plate 29 Partition wall 30 Partition member 30a Partition projection 31 Peripheral member 32 Horizontal louver 33 Current plate 34 Vertical louver 35 Lower member 36 Thermal insulator

Claims (2)

A heat exchanger in which a heat exchanger on the front side and a heat exchanger on the back side are arranged in an inverted V shape in a side view in the housing, and piping and refrigerant inlet / outlet provided on the side of the heat exchanger A side plate provided on the side of the heat exchanger to accommodate the pipe,
The side plate is provided with a partition member made of a plate-like wall material that partitions between the piping on the side of the heat exchanger and the refrigerant inlet / outlet pipe,
The refrigerant inlet / outlet pipe is arranged along the side surface of the heat exchanger and covered with a heat insulating material, and is connected to piping of the heat exchanger on the front side at the lowermost position on the front side, and the heat exchanger on the front side It is led upward along the side surface of, and is arranged at a position higher than any of the pipes at the uppermost position, and is arranged horizontally or downward from the uppermost position on the back side of the housing,
It said partition member, before Symbol pipes and air conditioner, wherein the refrigerant inlet and outlet pipes from the uppermost position in the vertical direction of the refrigerant inlet and outlet pipes are disposed toward the rear side of the housing is a pipe.  The refrigerant inlet / outlet pipe is covered with a heat insulating material, and a partition wall is formed on the outer side of the side plate and is partitioned from another accommodating portion, and the refrigerant is covered with the heat insulating material between the partition wall and the partition member. The air conditioner according to claim 1, wherein the air inlet / outlet pipe is sandwiched.

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