JP2014178069A - Outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure an insertion margin of a refrigerant pipe with respect to a flareless pipe joint in the field without carrying an exclusive tool for marking in mutually connecting refrigerant pipes of an outdoor unit and an indoor unit of an air conditioner by the flareless pipe joint.SOLUTION: In an outdoor unit 1 for an air conditioner, refrigerant pipes connecting the outdoor unit and an indoor unit are connected by a flareless pipe joint, and a piping cover is detachably attached to a piping connection part on the outdoor unit side. A gauge part 3 for measuring a suitable length of an insertion margin with respect to the flareless pipe joint of the refrigerant pipe P is provided in the piping cover 2.

Description

  The present invention relates to an outdoor unit of an air conditioner in which a refrigerant pipe connecting an outdoor unit and an indoor unit is connected by a flareless pipe joint, and more specifically, a gauge for measuring the length of a refrigerant pipe insertion into the flareless pipe joint. It is related with the outdoor unit of the air conditioner provided with the piping cover which has a part.

  The outdoor unit of the air conditioner and the indoor unit are connected to each other by a pipe joint. Normally, the joint of the air conditioner has one end of one refrigerant pipe flared and the other refrigerant is connected to the joint. A flare joint is used in which a flare nut and a union are screwed together in a state where the flare portion is pressed against a union attached to a pipe (see, for example, Patent Document 1).

  By the way, refrigerants called “R32” and “R1234yf” for air conditioners are attracting attention as next-generation refrigerants that can suppress greenhouse gases because of their low impact on global warming and excellent energy efficiency. .

  However, this type of next-generation refrigerant is flammable (or slightly flammable), and the current product safety standard (IEC) prohibits the use of flare joints that cause variations in processing by workers. Instead, it has been proposed to use a flareless pipe joint for a pipe joint of an air conditioner using a next-generation refrigerant having flammability (or slightly flammability).

  For example, as described in Patent Document 2, a flareless pipe joint is a pipe joint that allows pipes to be connected to each other without flaring the pipes. When tightened, the tightening ring bites into the outer peripheral surface of the pipe by the diameter reducing means and the pipe is locked, and the tightening ring comes into close contact with the outer peripheral surface of the pipe and the inner peripheral surface of the pipe joint body. It is a pipe joint in which the space between the main body and the pipe is sealed.

  However, in the case of a flareless pipe joint, there are the following precautions in connection work. That is, in order to prevent the refrigerant from leaking, it is necessary to fix the nut while the tip of one refrigerant tube is securely abutted against the abutting portion on the union side. It is not possible to directly check whether or not the pipes are in contact with each other, and once the nuts are tightened, it is not possible to confirm whether or not there is a deviation at the tip of the pipe.

  Then, patent document 3 is proposed as one of the methods of confirming whether the front-end | tip (insertion allowance) of piping is inserted in the union appropriately. According to this, by marking in advance with a dedicated jig at a position that serves as a guide for the insertion allowance of the refrigerant pipe, when the nut is tightened, it is determined whether or not the marking position is at the nut end. It is possible to know whether or not the refrigerant pipe has been properly inserted.

  However, in the invention described in Patent Document 3, it is necessary for the operator to prepare a marking-dedicated jig in advance. Marking cannot be performed at a position that is a guide for the insertion allowance.

  In addition, the refrigerant pipe has a gas side pipe and a liquid side pipe having different diameters, and two types of marking jigs must be prepared for each diameter.

Japanese Patent Laid-Open No. 2005-42858 JP 2003-232474 A JP 2003-278963 A

  Therefore, the problem of the present invention is that the refrigerant pipe connecting the outdoor unit and the indoor unit of the air conditioner is connected by the flareless pipe joint, and the refrigerant pipe for the flareless pipe joint is not required to carry the marking dedicated jig. The purpose is to be able to measure the insertion allowance.

  In order to solve the above-described problems, the present invention has several features described below. That is, in the outdoor unit of an air conditioner in which a refrigerant pipe connecting the outdoor unit and the indoor unit is connected by a flareless pipe joint, and a pipe cover is detachably attached to the pipe connecting part on the outdoor unit side. A gauge portion is provided for measuring the length of an appropriate insertion allowance of the refrigerant pipe with respect to the flareless pipe joint.

  Further, the piping cover and / or the gauge portion is provided with a marking instruction portion for marking with a predetermined marking means at a position of the insertion allowance with respect to the refrigerant pipe. .

  Furthermore, the gauge part includes an abutting part against which the tip of the refrigerant pipe is abutted, and a support part that supports the refrigerant pipe vertically with respect to the abutting part.

  The refrigerant pipe includes a gas side pipe and a liquid side pipe having different outer diameters, and the pipe cover has a first gauge part for the gas side pipe and a liquid side pipe as the gauge part. The second gauge portion is provided.

  The gauge portion is provided on the inner surface side of the pipe cover.

  The pipe cover is provided with an insertion hole for drawing the refrigerant pipe from the outside of the pipe cover toward the gauge portion.

  The gauge portion is provided as a recess on the outer surface side and the lower surface side of the pipe cover.

According to this, in the outdoor unit of the air conditioner in which the refrigerant pipe connecting the outdoor unit and the indoor unit is connected by the flareless pipe joint, and the pipe cover is detachably attached to the pipe connecting part on the outdoor unit side, Since the piping cover is provided with a gauge part for measuring the length of the appropriate insertion allowance for the flareless fitting of the refrigerant pipe, the operator can carry it on-site without carrying a marking-dedicated jig. Therefore, the length of the refrigerant pipe insertion allowance can be easily measured by the cage portion provided on the piping cover that is always removed when the air conditioner is installed.

  Further, the pipe cover and / or the gauge part is provided with a marking instruction part for marking with a predetermined marking means at a position of the insertion allowance with respect to the refrigerant pipe. At the same time, marking can also be performed properly.

  Further, the gauge portion includes an abutting portion against which the tip of the refrigerant tube is abutted, and a support portion that supports the refrigerant tube vertically with respect to the abutting portion, whereby the tip of the refrigerant tube The marking position can be easily measured accurately from the tip of the refrigerant tube by abutting against the abutting portion.

  The refrigerant pipe includes a gas side pipe and a liquid side pipe having different outer diameters, and the pipe cover has a first gauge part for the gas side pipe and a liquid side pipe as the gauge part. By providing the second gauge portion, it is stable without rattling when marking each refrigerant pipe.

  Since the gauge part is provided on the inner surface side of the pipe cover, the gauge part is not touched by eyes other than the operator.

  The pipe cover is provided with a drawing hole for drawing the refrigerant pipe from the outside of the pipe cover toward the gauge part, whereby the tip of the refrigerant pipe can be reliably drawn into the gauge part. .

  In addition, since the gauge portion is provided as a recess on the outer surface side and the lower surface side of the pipe cover, even when the gauge portion is provided on the outer surface side of the pipe cover, it is difficult to touch eyes other than the operator. be able to.

The disassembled perspective view of the outdoor unit of the air conditioner which concerns on embodiment of this invention. The (a) front view, (b) rear view, and (c) AA sectional view of the piping cover concerning a 1st embodiment of the present invention. The (a) rear view of the state which measured the refrigerant pipe using the measuring means of the piping cover of the said 1st Embodiment, and (b) AA sectional view taken on the line. The rear view which shows the modification of the piping cover of the said 1st Embodiment. The (a) front view which shows the state which provided the marking instruction | indication part in the piping cover of the said 1st Embodiment, (b) Rear view, and (c) AA sectional view taken on the line. The perspective view which showed typically the piping cover which concerns on 2nd Embodiment of this invention. The perspective view which showed typically (a) 1st modification of the piping cover of the said 2nd Embodiment, and (b) 2nd modification. The perspective view which showed typically the piping cover which concerns on 3rd Embodiment of this invention. (A) The perspective view which showed typically the modification of the piping cover which concerns on the said 3rd Embodiment, and (b) The detail drawing of a gauge part. The perspective view which shows the modification of the gauge part of this invention typically. (A) Sectional drawing seen from the front side of the modification of the said gauge part, (b) Sectional drawing which shows the modification of the position of a 1st gauge part. The perspective view which showed typically the piping cover which concerns on 4th Embodiment of this invention. (A) Sectional drawing of the state which decomposed | disassembled the component of the general flareless pipe joint, and (b) Sectional drawing of the connected state.

  First, referring to FIG. 13, a method for connecting refrigerant pipes using a flareless pipe joint will be described. First, the cap nut 600 and the sleeve 700 are attached to the outer surface of the refrigerant pipe P. Next, the tip of the refrigerant pipe P is inserted from the large diameter portion 520 of the nipple 500 and abuts against the end surface of the small diameter portion 510. Then, the cap nut 600 is tightened into the nipple 500. Then, the front sleeve 720 is pressure-bonded to the tapered surface 580 at the tip of the nipple 500, and the portion is sealed. Along with this, the sleeve 700 is pressed by the tapered surface 580 at the tip of the cap nut 600 and the nipple 500 to be reduced in diameter, bites into the outer surface of the refrigerant pipe P and seals the portion, and the refrigerant pipe P is a flareless pipe. It is fixed to the joint 100.

  Here, when the cap nut 600 is tightened without inserting the tip of the refrigerant pipe P up to the end face of the small diameter portion 510 in the nipple 500, the sleeve 700 is fixed at a position close to the tip of the refrigerant pipe P. However, when the length from the sleeve 700 to the tip of the refrigerant pipe P is short, there is a problem that when the refrigerant pipe P is pulled after the flareless pipe joint is tightened, the refrigerant pipe P easily comes out of the pipe joint.

  The present invention focuses on the above-described problems, and an object thereof is to provide an outdoor unit of an air conditioner that can confirm the suitability of the length from the sleeve to the tip of the refrigerant pipe in the flareless pipe joint.

  Next, an example of an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the outdoor unit 1 of an air conditioner has a rectangular housing, and refrigerant pipes Pa and Pb are connected to the side surface (right side surface in FIG. 1) with the indoor unit. A pipe connection 10 is provided.

  In addition to the two-way valve 13 and the three-way valve 12 (pipe connection part) to which the liquid pipe and the gas pipe are connected, the pipe connection part 10 is also provided with a terminal block (not shown) to which a signal line is connected. . In this example, the pipe connection part 10 is provided so as to cut out the side surface of the casing of the outdoor unit 1 from the bottom to the top of the outdoor unit casing. In the present invention, the specific configuration of the pipe connecting portion 10 is an arbitrary matter.

  A pipe cover 2 </ b> A for covering the pipe connection portion 10 is detachably attached to the outdoor unit 1. In this embodiment, the piping cover 2A shown in FIG. 1 is divided into a terminal block cover portion, a two-way valve, and a three-way valve cover in the upper and lower parts, and one piping cover 2A is formed by combining them. However, the piping cover 2A may be integrated.

  Referring to FIG. 2, the pipe cover 2 </ b> A has an inner peripheral surface that is recessed from one surface to the other surface (from left to right in FIG. 2C). At the upper part of the surface of the pipe cover 2A (the front side in FIG. 2A), a handle portion 22 is provided for inserting a hand when the pipe cover 2A is attached or detached.

  An opening for inserting the refrigerant pipe P (liquid pipe Pa or gas pipe Pb) (see FIG. 3) toward the gauge portion 3 existing inside the concave portion 21 of the pipe cover 2A at the lower part of the surface of the pipe cover 2A. A portion 23, that is, an insertion hole is provided. In this example, the opening 23 is provided on the lower left side when the piping cover 2A is viewed from the front, and has a size that allows the two types of refrigerant pipes P, the liquid pipe Pa and the gas pipe Pb, to be inserted. .

  In the recess 21 of the piping cover 2A, a gauge portion 3 is provided for measuring the length of the insertion allowance when piping the refrigerant pipe P described above with a flareless fitting. The length of the insertion allowance is a lower limit value of the proper tightening amount, and refers to a range that is always located inside the flareless fitting if the cap nut tightening amount is within the proper range. The gauge part 3 includes an abutting part 31 against which the tip P1 of the refrigerant pipe P (see FIG. 3) is abutted, and a refrigerant pipe so that the axis of the refrigerant pipe P is orthogonal to the abutting surface of the abutting part 31. A wall portion 32 and a back wall 211 are provided as support portions for supporting P.

  As shown in FIG. 2 (c), the abutting portion 31 is formed of a rib that is erected almost vertically from the inner wall surface of the pipe cover 2 </ b> A, and the refrigerant pipe P is orthogonal to the abutting surface 311. Pressed. At this time, the tip P <b> 1 of the refrigerant pipe P is parallel to the abutting surface 311.

  In this example, the abutting surface 311 of the abutting portion 31 has an area larger than the cross-sectional area of the refrigerant pipe P, but has a size with which at least a part of the tip P1 of the refrigerant pipe P can abut. The size of the abutting surface 311 is not particularly limited.

  The wall portion 32 is formed of a rib that is erected substantially perpendicularly from the inner wall surface of the pipe cover 2A, and is orthogonal to the abutting surface 311 from one end side of the abutting portion 31 (left side in FIG. 2B). It extends downward.

  In the first embodiment, the gauge portion 3 is further provided with a guide portion 33 for stably introducing the refrigerant pipe P into the gauge portion 3. The guide portion 33 is composed of a rib extending so as to be orthogonal to the abutting surface 311 from one edge (the lower edge in FIG. 2C) of the opening 23.

  According to this, the refrigerant pipe P inserted from the opening 23 is rattled after the refrigerant pipe P is inserted by being guided into the gauge part 3 along the wall part 32, the back wall 211 and the guide part 33. The tip P1 can be brought into contact with the abutting surface 311. Further, even after the front end P1 is applied to the abutting surface 311, the marking position measurement and the marking process described later can be stably performed without rattling by the wall portion 32, the back wall 211, and the guide portion 33.

  Referring to FIG. 2 (b), a marking instructing section 4 is provided on the inner peripheral surface of the pipe cover 2A to perform a marking process on a predetermined portion of the refrigerant pipe P whose length is measured by the gauge section 3. ing.

  In this 1st Embodiment, the marking instruction | indication part 4 displays the arrow mark 41 stamped on the internal peripheral surface of 2 A of piping covers, and an operator that the location which the arrow mark 41 points out is a marking position. And a display unit 42. In this example, the display unit 42 is engraved as “marking position”, but may be other characters, numbers, symbols, or the like.

  In this example, the marking instruction part 4 is provided at a position having a length L from the abutting part 31 to the tip of the guide part 33. In this 1st Embodiment, the position used as length L is aligned so that it may become the same as the appropriate insertion allowance to the flareless pipe coupling at the time of connection by a flareless pipe coupling.

  According to this, as shown in FIG. 3, the operator picks up the pipe cover 2 </ b> A that must be once removed from the outdoor unit 1 when the air conditioner is installed, and the tip P <b> 1 of the refrigerant pipe P from the opening 23. Is inserted into the pipe cover 2A until it comes into contact with the abutting portion 31, and then a pen tip such as a marking pen is aligned with the marking instruction portion 4 with the tip P1 in contact with the marking on the surface of the refrigerant pipe P. By doing so, the insertion allowance can be easily marked.

  In the first embodiment, the gauge portion 3 is a case where the insertion allowance of the joint portion between the gas pipe (gas side pipe) and the liquid pipe (liquid side pipe) constituting the refrigerant pipe P is the same insertion allowance. As a result, only one location is provided on the piping cover 2A. However, when the insertion allowance is different between the liquid pipe and the gas pipe, the gauge portions 3 may be provided separately.

  FIG. 4 shows a first modification of the first embodiment. The pipe cover 2B of this modification is provided with a gauge part 3a dedicated to the liquid pipe Pa and a gauge part 3b dedicated to the gas pipe Pb, respectively. The pipe cover 2B is further provided with two marking instruction parts 4a and 4b corresponding to the gauge parts 3a and 3b.

  The gauge portion 3a dedicated to the liquid pipe Pa has an opening 23a and an abutting portion 31a formed corresponding to the liquid pipe Pa having a small diameter, and the marking instructing portion 4a (hereinafter referred to as the first marking) is formed from the abutting portion 31a. It is provided at a position where the distance to the instruction unit 4a) is L1.

  The gauge portion 3b dedicated to the gas pipe Pb has a large opening 23 and abutting portion 31b corresponding to the gas pipe Pb having a large diameter, and the marking instructing portion 4b (hereinafter, second marking) is formed from the abutting portion 31b. It is provided at a position where the distance to the instruction unit 4b) is L2.

  Next, a second modification of the first embodiment will be described with reference to FIG. The piping cover 2C of the second modified example is provided with one gauge portion 3 and two marking instruction portions 4a and 4b. Since the gauge part 3 is the same as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and specific description is abbreviate | omitted.

  The gauge portion 3 of the pipe cover 2C of the second modified example has a size that allows two types of refrigerant pipes, that is, the liquid pipe Pa and the gas pipe Pb, to be inserted, and can be inserted from the opening 23. In the second modification, the opening 23 is set to a distance L2 corresponding to the marking position of the gas pipe Pb, from the abutting portion 31 to the opening 23.

  A guide hole 24 for performing a marking process is further provided on the surface of the pipe cover 2C (the front side in FIG. 5A). The guide hole 24 is an opening used to draw a guide line on the surface of the liquid pipe 3a when the liquid pipe 3a is inserted, and the distance from the abutment portion 31 to the guide hole 24 is the same as that of the liquid pipe Pa. The distance L1 corresponding to the marking position is set.

  The surface of the pipe cover 2C (the front side in FIG. 5A) is further provided with a first marking instruction part 4a for the liquid pipe Pa in accordance with the position of the guide hole 24, and the opening edge of the opening 23 A marking instructing portion 4b for the gas pipe Pb is also provided.

  According to this, when the liquid pipe Pa is inserted into the gauge part 3, a pen such as a marking pen is inserted into the guide hole 24 of the first marking instruction part in a state where the liquid pipe Pa is abutted against the abutting part 31. By simply inserting the tip and moving it to the left and right according to the guide hole 24, the position of the insertion allowance can be easily marked on the surface of the liquid pipe Pa.

  Further, when the gas pipe Pb is inserted, the pen tip is moved left and right along the edge of the opening 23 in a state where the gas pipe Pb is abutted against the abutting portion 31, so that the surface of the gas pipe Pb is moved. The position of the insertion allowance can be easily marked.

  Next, with reference to FIG. 6, a pipe cover 2D according to a second embodiment of the present invention will be described. The piping cover 2D of the second embodiment has basically the same shape as that of the first embodiment described above, and the same reference numerals are given to portions that are considered to be the same or the same.

  A gauge portion 3 is provided inside the concave portion 21 of the pipe cover 2D. In the gauge part 3, the abutting part 31 is composed of the back wall 211 itself of the pipe cover 2 </ b> D, and the guide plate 34 is erected almost vertically from the bottom wall 213 orthogonal to the back wall 211.

  The bottom wall 213 is provided with two markings 4a and 4b. The first marking 4a is provided at a distance L1 away from the back wall 211 along the guide plate 24, and the second marking 4b is located at a distance L1 away from the back wall 211 along the guide plate 34 (guide). The tip of the plate 34 is provided. Note that by providing a line corresponding to the marking 4a as in the guide plate 34 of FIG. 6, the marking position can be measured and the marking process can be performed more easily.

  According to this, while pressing the tip of the liquid pipe Pa or the gas pipe Pb against the back wall 211 along the guide plate 34, marking is performed on the surface of the liquid pipe Pa or the gas pipe Pb according to the marking instruction portions 4a and 4b. Processing can be performed, and the marking position can be accurately measured from the tip of the refrigerant pipe with a simpler configuration.

  In addition to this, as a method of using the back wall 211 as an abutment surface, as shown in FIG. 7A, a refrigerant pipe is fitted to the corners of the side wall 212 and the bottom wall 213 orthogonal to the back wall 211. You may make the front-end | tip of a refrigerant pipe contact | abut to the back wall 211, making it contact | abut.

  At this time, the first marking 4a for the liquid pipe Pa and the second marking instruction portion 4b for the gas pipe Pb are provided at a predetermined distance from the back wall 211 as a reference, so that the liquid pipe Pa can be easily provided. The marking process can be performed on two types of refrigerant pipes, namely, the gas pipe Pb.

  Further, as shown in FIG. 7B, a first guide hole 24a and a second guide hole 24b are provided in a part of the bottom wall 213 in accordance with the marking instruction portions 4a and 4b, so that the pipe guide 2D is provided. Marking processing may be performed by inserting a pen tip such as a marking pen from the bottom of each of the guide holes 24a and 24b.

  By the way, since the gauge part 3 of 1st and 2nd embodiment mentioned above is provided in the bottom part side (bottom wall 213) of the piping cover 2, it is easy to get dirty by rain wind etc. by all means. Therefore, in the piping cover 2E of the third embodiment shown in FIG. 8, the gauge portions 3a and 3b are disposed on the upper side of the piping cover 2E.

  That is, the gauge portions 3a and 3b of the third embodiment are integrally formed along the upper wall 214 of the pipe cover 2E, and one gauge portion 3a is disposed along one side wall 212, and the other The gauge portion 3b is disposed along the other side wall 212 opposite to the one side wall 212.

  Next, FIG. 9 shows a modification of the third embodiment. As shown in FIG. 9A, the pipe cover 2F includes one gauge portion 3 along a corner portion on the upper surface side. In the gauge part 3, the abutting part 31 is formed from the back wall 211 itself of the pipe cover 2F, and a wall part 32 having an L-shaped cross section is provided so as to face the upper wall 215 and the side wall 212.

  On the bottom surface of the wall portion 32, two guide holes 34a and 34b for marking are provided. One guide hole 34a is provided at a distance L1 away from the abutting portion 31 according to the marking position of the liquid pipe Pa, and the other guide groove 34b is located at the marking position of the gas pipe Pb from the abutting portion 31. Is provided at a position separated by a distance L2. The guide holes 34 a and 34 b may be provided on the side surface of the wall portion 32.

  According to this, two types of refrigerant pipes can be measured with one gauge portion 3. In addition, the 2nd guide hole 4b can also be abbreviate | omitted by designing so that the distance from the abutting part 31 to the opening edge of the wall part 32 may be set to L2.

  Next, with reference to FIG. 10 and FIG. 11, the modification of the gauge part 3 is demonstrated. In the gauge part 3c, a first gauge part 3a for measuring a small diameter liquid pipe Pa is integrally formed at the bottom of the second gauge part 3b for measuring the large diameter gas pipe Pb.

  The first gauge portion 3a is formed to have a length L1 and a width W1, and the length of the insertion allowance can be measured by pressing the liquid pipe Pa against the abutting portion 31a. The 2nd gauge part 3b is formed so that it may become width W2 by length L2, and can measure the length of the insertion allowance of gas pipe Pb by pressing gas pipe Pb against butting surface 31b. After the measurement, the marking process can be performed at an appropriate position by performing the marking process along the opening edge.

  In this example, the first gauge portion 3a is arranged at the lower center of the second gauge portion 3b as shown in FIG. 11 (a). However, as shown in FIG. 11 (b), the second gauge portion 3a is arranged. You may arrange | position along the any one side of 3b.

  Moreover, although the gauge part 3 (3a-3c) of the said 1st-3rd embodiment has been provided in the recessed part 21 of the piping cover 2, as shown in FIG. 12, it integrates with the exterior of the piping cover 2F. It may be formed.

  That is, the gauge portion 3D has a support portion 32d in which a part of the bottom wall 213 of the pipe cover 2F is cut out in a semicircular shape in accordance with the shape of the pipe P, and abutment portion on one end side of the support portion 32d. 31d is provided.

  According to this, the other end side is opened toward the side wall 212 side, and marking is performed on the pipe P along the notch edge 35, so that the pipe P can be simply as in the first to third embodiments. Can be easily marked.

  In each embodiment mentioned above, in order to make it easy to insert the refrigerant pipe P in a stable state, the gauge portion 3 is formed in a quadrangular cross section, but other than this, it may be a triangular shape or a round shape. As long as the refrigerant pipe P can be inserted and brought into contact with the abutting surface 31, the shape thereof may be arbitrarily changed according to the specification.

  In addition, although the example which changes a marking position with the liquid pipe Pa and the gas pipe Pb was shown, when changing the kind of refrigerant | coolant, since the case where a joint with a different kind is used is considered, a gage part should be provided according to the kind of refrigerant | coolant, respectively. It may be.

1 Outdoor unit (air conditioner)
2 (2A to 2F) Piping cover 21 Recessed portion 23 Opening portion 3 (3a to 3d) Gauge portion 31 Abutting portion 32 Wall portion 33 Guide portion 34 Guide plate 34a, 34b Guide hole 4 Marking instruction portion

Claims (7)

In the outdoor unit of the air conditioner in which the refrigerant pipe connecting the outdoor unit and the indoor unit is connected by a flareless pipe joint, and a pipe cover is detachably attached to the pipe connecting part on the outdoor unit side.
An outdoor unit of an air conditioner, wherein a gauge portion for measuring a length of an appropriate insertion allowance of the refrigerant pipe with respect to the flareless pipe joint is provided on the pipe cover.   The pipe cover and / or the gauge part is provided with a marking instruction part for marking with a predetermined marking means at a position of the insertion allowance with respect to the refrigerant pipe. The outdoor unit of the air conditioner described in 1.   The said gauge part is provided with the abutting part by which the front-end | tip of the said refrigerant | coolant pipe | tube is abutted, and the support part which supports the said refrigerant | coolant pipe | tube perpendicularly | vertically with respect to the said abutting part. The outdoor unit of the air conditioner described in 2.   The refrigerant pipe includes a gas side pipe and a liquid side pipe having different outer diameters, and the pipe cover has a first gauge part for the gas side pipe and a liquid side pipe as the gauge part. The outdoor unit of the air conditioner according to any one of claims 1 to 3, wherein a second gauge portion is provided.   The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein the gauge portion is provided on an inner surface side of the pipe cover.   The outdoor unit for an air conditioner according to claim 5, wherein the pipe cover is provided with an insertion hole for drawing the refrigerant pipe from the outside of the pipe cover toward the gauge part.   The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein the gauge portion is provided as a recess on an outer surface side and a lower surface side of the pipe cover.

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