JP2017145971A - Drain pipe for air conditioning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain pipe for air conditioning which prevents occurrence of dew condensation while inhibiting increase of costs.SOLUTION: A drain pipe for air conditioning 2 has: a primary side end part 6A connected to an indoor unit 1; and a secondary side end part 6B connected to a drain pipe 3 for draining drain water to an outdoor side. The drain pipe 2 is configured so that adiabaticity is enhanced from the secondary side end part 6B to the primary side end part 6A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning drain pipe connected to a drain pipe that discharges drain water generated in an indoor unit to the outside.

  In general, when the air conditioning is in a cooling operation, for example, drain water (also referred to as condensed water or condensed water) is generated in the indoor unit. Since the generated drain water is at a temperature lower than room temperature, condensation may occur on the surface of the air conditioning drain pipe depending on the humidity of the room. In order to prevent this, the air-conditioning drain pipe is made of a heat insulating material (for example, Patent Document 1).

Utility Model Registration No. 3150922

  The air-conditioning drain pipe having the above configuration is configured by covering a main pipe through which drain water flows with a heat insulating material having a uniform thickness, and thus has the same heat insulating property from one end to the other end in the longitudinal direction. For this reason, if the temperature of the drain water immediately after being discharged from the indoor unit is low, dew condensation may occur at the primary side end connected to the indoor unit side of the air conditioning drain pipe, and there is room for improvement. . Incidentally, it is conceivable to increase the heat insulating property of the air conditioning drain pipe over the entire length so as not to cause dew condensation, but it has the disadvantage of increasing the cost and is difficult to implement.

  In view of the above-described situation, the present invention provides an air-conditioning drain pipe that can prevent the occurrence of condensation while suppressing an increase in cost.

  In order to solve the above-described problem, the air conditioning drain pipe of the present invention includes a primary side end connected to the indoor unit and a secondary side end connected to a drain pipe for draining drain water to the outside. The air-conditioning drain pipe has a heat insulation property that increases from the secondary side end toward the primary side end.

  The temperature of the drain water immediately after being generated from the indoor unit is the lowest, and gradually increases with room temperature while flowing through the air conditioning drain pipe. Therefore, in order to make the heat insulation at the primary side end where the water temperature is the lowest and easy to condense, higher than the secondary end, keep the heat insulation high from the secondary end to the primary end. If this occurs, it is possible to prevent the occurrence of condensation. And it becomes advantageous in terms of cost compared with the structure which makes the heat insulation of the whole pipe | tube high by making heat insulation high from a secondary side edge part toward a primary side edge part.

  The air-conditioning drain pipe of the present invention includes a main pipe through which the drain water flows and a heat insulating cover that covers an outer periphery of the main pipe, and the heat insulating property of the heat insulating cover is from the secondary side end. You may be comprised so that it may become high toward a primary side edge part.

  As described above, if the heat insulating property of the heat insulating cover is configured to be increased from the secondary side end portion toward the primary side end portion, it is possible to effectively prevent the occurrence of condensation while suppressing high cost. be able to.

  The air-conditioning drain pipe of the present invention includes a main cover provided on the main pipe over the substantially entire length of the heat insulating cover, and a reinforcing cover that covers the main pipe, and the reinforcing cover includes the main pipe. The primary side end part side may be covered rather than the middle part between the primary side end part and the secondary side end part.

  As described above, the main cover provided over the substantially entire length of the main pipe is covered with the reinforcing cover on the primary side end side rather than the middle part between the primary side end part and the secondary side end part of the main pipe. By adopting a double heat insulating structure, it is possible to effectively prevent the occurrence of condensation while suppressing an increase in cost.

  In the air conditioning drain pipe of the present invention, the reinforcing cover may include a connection cover portion that covers a connection portion between the primary side end portion and the indoor unit.

  As described above, since the reinforcing cover includes the connection cover portion that covers the connection portion between the primary side end portion and the indoor unit, the occurrence of condensation can be effectively prevented.

  According to the present invention, it is possible to prevent the occurrence of condensation while suppressing the increase in cost by configuring the heat insulation property to increase from the secondary side end to the primary side end. An air conditioning drain pipe capable of being provided can be provided.

It is a front view which shows the state by which the drain pipe for air conditioning of this invention was connected to the indoor unit. It is the enlarged front view made into the partial cross section of the drain pipe for air conditioning. It is the front view made into the partial cross section which shows the structure of the main pipe of the air-conditioning drain pipe. It is a front view which shows the state by which the drain pipe for air conditioning of another form was connected to the indoor unit. It is a front view which shows the state by which the drain pipe for air conditioning of another form was connected to the indoor unit. It is a front view which shows the state by which the drain pipe for air conditioning of another form was connected to the indoor unit.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a piping structure for discharging drain water accumulated in an indoor unit 1 installed indoors to the outside. This piping structure includes an air conditioning drain pipe 2 connected to the indoor unit 1 and a drain pipe 3 for receiving drain water from the air conditioning drain pipe 2 and discharging it to the outside.

  The indoor unit 1 is suspended and supported by a plurality of suspension bolts 4 (only one is shown in FIG. 1), and drain water is provided at one end (the right and left direction in FIG. 1) of the indoor unit 1 (the right end in FIG. 1). 1 protrudes to the right side in FIG. One end of an air conditioning drain pipe 2 is connected to the pipe 5.

  The air conditioning drain pipe 2 includes a main pipe 6 through which drain water flows and a heat insulating cover 7 that covers the outer periphery of the main pipe 6. As shown in FIGS. 2 and 3, the heat insulating cover 7 includes a main cover 8 (see FIG. 3) provided on the main pipe 6 and a reinforcing cover for enhancing the heat insulating properties of the covered portion by covering the main pipe 6. 9 (see FIG. 2). Joints 10 are provided at both ends of the main pipe 6. One joint 10 is inserted into the end of the pipe 5 (externally fitted), and then the joint 10 is fastened and fixed by the band 11. Further, the joint 10 at the other end is inserted into (attached to) the end of the drainage pipe 3 on the front side in the drainage direction, and then the joint 10 is fastened and fixed by the band 11. In addition, the joint 10 inserted in the edge part of the piping 5 is comprised by the joint bent so that it may change 90 degree | times from a horizontal direction upwards.

  As shown in FIGS. 1 and 2, the main pipe 6 includes a primary side end 6 </ b> A connected to the pipe 5 of the indoor unit 1, and a drainage direction front side of the drainage pipe 3 for draining drain water to the outside. A secondary side end 6B connected to the end, and an intermediate part 6C, which is an intermediate portion between the primary side end 6A and the secondary side end 6B, are provided. Further, as shown in FIG. 3, the main pipe 6 includes an inner film 12 that forms an inner surface through which drain water flows, an outer film 13 that is positioned outside, and a reinforcing core that is disposed between the films 12 and 13. And a material 14. The main cover 8 provided in the main pipe 6 is disposed between the inner film 12 and the outer film 13 and is disposed over the entire length of the main pipe 6. Further, the reinforcing cover 9 is covered on the primary end 6A side with respect to the intermediate portion 6C, which is an intermediate portion between the primary end 6A and the secondary end 6B of the main pipe 6. The main cover 8 is made of foamed polyethylene, and the core material 14 and the inner and outer films 12 and 13 are made of polyvinyl chloride. The main cover 8, the core material 14, and the inner and outer films 12 and 13 are formed. Various plastic materials can be used as the material.

  A portion of the main pipe 6 closer to the drain pipe 3 than the intermediate part 6 </ b> C is supported in a state of being lifted upward by a lifting tool 15. And the indoor unit 1 is equipped with the drainage pump (not shown) for sending out the drain water collected inside. Accordingly, the drain water can be moved to above the main pipe 6 by driving the drain pump. The drain water that has been lifted up above the main pipe 6 can fall at a gentle downward slope of the main pipe 6 and be sent to the drain pipe 3. The drain pipe 3 is made of vinyl chloride (may be various synthetic resins) and has a gentle downward slope toward the outdoor side, so that drain water moves slowly and is discharged outside the room.

  The reinforcing cover 9 further includes a connection cover portion 9B that covers a connection portion between the primary side end portion 6A of the main pipe 6 and the indoor unit 1. The connection cover portion 9B is integrally formed so as to extend in the horizontal direction by changing approximately 90 degrees from the end portion of the main body cover portion 9A in the vertical direction covering the main pipe 6 side in the vertical direction, and covers the pipe 5 and the joint 10. ing. The reinforcing cover 9 is made of foamed polyethylene, but may be made of other materials. By covering the primary side end 6A of the main pipe 6 with the reinforcing cover 9 in this manner, the heat insulation at the primary side end 6A where the water temperature is the lowest and condensation is likely to occur is higher than that of the secondary side end 6B. The heat insulating property is increased from the secondary side end 6B toward the primary side end 6A. Thereby, generation | occurrence | production of condensation can be prevented. In addition, by increasing the heat insulation from the secondary side end 6B to the primary side end 6A, it is advantageous in terms of cost compared to a configuration in which the heat insulation of the entire pipe is increased. Further, the main cover 8 provided over the entire length of the main pipe 6 is provided with a reinforcing cover 9 on the primary side rather than the intermediate part 6C which is an intermediate part between the primary side end 6A and the secondary side end 6B of the main pipe 6. By covering the side end portion 6A side to form a double heat insulating structure, it is possible to effectively prevent the occurrence of condensation while suppressing an increase in cost. Furthermore, since the reinforcing cover 9 further includes a connection cover portion 9B that covers the connection portion between the primary side end portion 6A and the indoor unit 1, the occurrence of condensation can be effectively prevented.

  The reinforcing cover 9 having the above-described configuration may be configured in a cylindrical shape, or may be configured in two so as to be attached to the primary side end portion 6 </ b> A of the main pipe 6. Further, the reinforcing cover 9 may be attached in the form of a tape having a thickness by being wound around the primary side end portion 6A of the main pipe 6. Moreover, the indoor unit 1 side end of the connection cover part 9B shown in FIG.1 and FIG.2 is contact | abutted and closed by the side wall 1A of the indoor unit 1, and the drain pipe 3 side end of 9 A of main body cover parts is from other parts. Further, the diameter of the reinforcing cover 9 is in contact with the outer surface of the main pipe 6 without a gap, and both ends of the reinforcing cover 9 are closed. Furthermore, a gap is not generated between the inner surface of the end of the reinforcing cover 9 on the indoor unit side and the outer surface of the pipe 5 and between the inner surface of the end of the reinforcing cover 9 on the drain pipe 3 side and the outer surface of the main pipe 6. Then, tape is wound around both ends of the reinforcing cover 9 from above.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. For example, as shown in FIGS. 4 to 6, one end of the air-conditioning drain pipe 2 that extends linearly in the horizontal direction is connected to the pipe 5 of the indoor unit 1 by the joint 10. The other end of the air conditioning drain pipe 2 (the end on the far side in the drainage direction) is connected to the drain pipe 3 arranged so as to face downward by a joint 10 that changes the direction by 90 degrees. The air conditioning drain pipe 2 has a gentle slope so that drain water flows to the right side of FIG. The joints 10, 10 may be provided at both ends of the main pipe 6, or may be another one that is not integrated with both ends of the main pipe 6. Moreover, the main pipe 6 is comprised from what does not have a heat insulating material, and is comprised with various plastic materials or various metal materials. The main pipe 6 includes a primary side end 6A connected to the indoor unit 1 side, a secondary side end 6B connected to the drain pipe 3 for draining to the outdoor side, a primary side end 6A and a secondary side end 6A. And an intermediate portion 6C, which is an intermediate portion between the secondary side end portion 6B. The main cover 6 is covered with a heat insulating cover 16 over almost the entire length. The heat insulating cover 16 is formed on the tapered surface 16A so that the volume covering the main pipe 6 decreases toward the drain pipe 3 side (the thickness decreases toward the drain pipe 3 side). Accordingly, the heat insulation is increased from the secondary end 6B of the main pipe 6 toward the primary end 6A. With this configuration, it is possible to prevent dew condensation from occurring on the primary side end 6A of the main pipe 6. In addition, by forming the heat insulating cover 16 in a tapered shape having the tapered surface 16A, it is advantageous in terms of cost compared to a case where the heat insulating cover 16 has the same thickness so as to increase the heat insulating property of the entire pipe.

  In FIG. 5, since parts other than the heat insulating cover 16 shown in FIG. 4 are the same, the same reference numerals are given and the description is omitted. Then, four heat insulating covers 17A, 17B, 17C, and 17D are covered over almost the entire length of the main pipe 6. The four heat insulating covers 17A, 17B, 17C, and 17D are made thinner as the heat insulating covers located on the drain pipe 3 side as shown in FIG. Therefore, in FIG. 5, the heat insulating cover 17A located at the left end has the highest heat insulating property, and the heat insulating cover 17D located at the right end has the lowest heat insulating property. In this way, the primary side end of the main pipe 6 is covered with the heat insulating covers 17A, 17B, 17C, and 17D so as to increase the heat insulation performance from the secondary side end 6B of the main pipe 6 toward the primary side end 6A. It is possible to prevent condensation from occurring in the portion 6A. Moreover, the four heat insulating covers 17A, 17B, 17C, and 17D are arranged so as to be closer to the drainage pipe 3, so that the four pipes are made of the same thickness so as to increase the heat insulating property of the entire pipe. Compared to the configuration, it is advantageous in terms of cost.

  In FIG. 6, since parts other than the heat insulating cover 16 shown in FIG. 4 are the same, the same reference numerals are given and the description is omitted. Then, four heat insulating covers 18A, 18B, 18C, and 18D having the same thickness are covered over almost the entire length of the main pipe 6. The four heat insulating covers 18A, 18B, 18C, and 18D are made of a heat insulating material having a larger heat insulating coefficient as it is located on the drain pipe 3 side. Accordingly, in FIG. 6, the heat insulating cover 18A located at the left end has the highest heat insulating property, and the heat insulating cover 18D located at the right end has the lowest heat insulating property. In this way, the primary side end of the main pipe 6 is covered with the heat insulating covers 18A, 18B, 18C, and 18D so as to increase the heat insulation performance from the secondary side end 6B of the main pipe 6 toward the primary side end 6A. It is possible to prevent condensation from occurring in the portion 6A. In addition, by configuring the four heat insulating material covers 18A, 18B, 18C, and 18D so as to be located closer to the drain pipe 3, the same heat insulating coefficient is set so as to increase the heat insulating property of the entire pipe. This is advantageous in terms of cost compared to the case where the four heat insulating covers are provided. 4 to 6, the total lengths of the heat insulating covers 16, 17 </ b> A,..., 18 </ b> A are not limited to those shown in the drawings. That is, it may be a full length that also covers the joint 10 on the right side of the figure, or may be a little shorter than the full length shown in the figure, depending on the total length of the main pipe 6, the environment in which the main pipe 6 is installed, etc. The total length of the insulation cover will be set.

  In the above embodiment, the air-conditioning drain pipe 2 is disposed so that the drain water is once lifted as shown in FIG. 1 or guided with a gentle downward slope as shown in FIG. 4, but the drain water from the indoor unit 1 is directly below. You may arrange | position the drain pipe 2 for an air conditioning in an up-down (vertical) attitude | position so that it may guide.

  Moreover, in the said embodiment, although it comprised so that heat insulation might become high toward the primary side edge part 6A from the secondary side edge part 6B of the main pipe 6 using a heat insulating material, for example, the inner side which comprises the main pipe 6 A heat insulating layer having a hollow space between the film (inner tube portion) 12 and the outer film (outer tube portion) 13 is provided, and the heat insulating layer is directed from the secondary end 6B to the primary end 6A of the main pipe 6. Thus, the heat insulating property may be increased.

  DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 1A ... Side wall, 2 ... Air-conditioning drain pipe, 3 ... Drain pipe, 4 ... Suspension bolt, 5 ... Piping, 6 ... Main pipe, 6A ... Primary side end, 6B ... Secondary side end, 6C ... intermediate portion, 7 ... heat insulating cover, 8 ... main cover, 9 ... reinforcing cover, 9A ... main body cover portion, 9B ... connection cover portion, 10 ... joint, 11 ... band, 12 ... inner film, 13 ... outer film, 14 ... Core material, 15 ... Suspension tool, 16 ... Heat insulation cover, 16A ... Tapered surface, 17A, 17B, 17C, 17D ... Heat insulation cover, 18A, 18B, 18C, 18D ... Heat insulation cover

Claims (4)

  An air conditioning drain pipe having a primary side end connected to an indoor unit and a secondary side end connected to a drain pipe for draining drain water to the outside, from the secondary side end A drain pipe for air conditioning, characterized in that heat insulation is increased toward the primary side end.   A main pipe through which the drain water flows, and a heat insulating cover that covers the outer periphery of the main pipe, such that the heat insulating property of the heat insulating cover increases from the secondary side end to the primary side end. It is comprised, The drain pipe for air conditioning of Claim 1 characterized by the above-mentioned.   The heat insulating cover includes a main cover provided on the main pipe over substantially the entire length, and a reinforcing cover that covers the main pipe, and the reinforcing cover includes a primary side end portion and a secondary side end portion of the main pipe. The air-conditioning drain pipe according to claim 2, wherein the air-conditioning drain pipe is covered on the primary side end side with respect to the middle part between the two.   The air conditioning drain pipe according to claim 3, wherein the reinforcing cover includes a connection cover portion that covers a connection portion between the primary side end portion and the indoor unit.

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