JP5715864B2 - Receiver dryer - Google Patents

Description

  The present invention relates to a receiver dryer used for removing moisture in a refrigerant while storing the refrigerant used in an air conditioner for automobiles and the like.

  As the receiver dryer, as shown in FIG. 3, Patent Document 1 discloses a cylindrical main body 32, a header 33 attached to the lower end of the main body 32, and having a refrigerant inlet hole 33a and a refrigerant outlet hole 33b, and a refrigerant outlet. A receiver dryer 31 including a strainer 36 covering the hole 33b is described. With this configuration, moisture in the refrigerant flowing into the main body 32 from the refrigerant inlet hole 33a is absorbed by the desiccant 35 accommodated in the bag 34, and foreign matter is removed by the strainer 36.

  On the other hand, in order to make it easier to detect refrigerant leakage from air conditioners installed in vehicles, etc., a fluorescent agent is injected into the refrigerant pipe, and the fluorescent agent is circulated in the pipe together with the refrigerant. The leakage of the refrigerant is detected by visually observing the leaked fluorescent agent. Here, the fluorescent agent is accommodated in the receiver dryer bag together with the desiccant, and when the refrigerant passes through the receiver dryer, the fluorescent agent accompanies the refrigerant and circulates in the refrigerant pipe.

JP 2010-144935 A

  However, along with the space saving of vehicles, the receiver dryer is also becoming thinner, and when the fluorescent agent is built in the upper part of the receiver dryer, the fluorescent agent is not immersed in the liquid refrigerant and mixed with the refrigerant. As a result, there has been a problem that refrigerant leakage cannot be detected. In addition, if the fluorescent agent is forgotten to be stored in the bag 34, naturally the leakage of the refrigerant cannot be detected.

  Therefore, the present invention has been made in view of the problems in the above conventional receiver dryer, and can reliably immerse the fluorescent agent in the liquid refrigerant, and can improve the reliability of refrigerant leakage detection. An object of the present invention is to provide a receiver dryer capable of preventing forgetting to store a fluorescent agent in a bag.

To achieve the above object, the present invention includes a cylindrical body that inlet and outlet of the refrigerant is provided at one end, a receiver drier for removing moisture from the refrigerant while storing the refrigerant, the tube the inside Jo body are encapsulated bag containing the drying agent, wherein the bag, Yes forms a housing chamber partitioned storage fluorescent agent on the end of the entering outlet, said tube before Symbol bag in pre-integration stage to Jo body, characterized in that to enable confirmation of the presence of the fluorescent agent in the accommodating chamber by touch.

  And according to this invention, since the fluorescent agent was provided in the edge part by the side of the refrigerant | coolant in a bag, a fluorescent agent can be made to contact a liquid refrigerant reliably and the reliability regarding the leak detection of a refrigerant | coolant can be improved. it can. In addition, since the fluorescent agent is provided on the bag so that the presence of the bag can be confirmed from the outside, it is possible to prevent forgetting to put the fluorescent agent.

Further, by providing a storage chamber in the bag, the storage position of the fluorescent agent becomes clear and can be easily assembled to the receiver dryer, and after the fluorescent agent is stored, the portion is touched by hand from above the bag. Since the presence of the fluorescent agent can be confirmed, it is possible to prevent forgetting to put the fluorescent agent.

Further, the present invention is a receiver dryer that includes a cylindrical main body provided with an inlet / outlet of a refrigerant at one end, and removes moisture in the refrigerant while storing the refrigerant, bag containing the drying agent is sealed, wherein the bag is provided with a colored portion formed by impregnating a pre-Symbol bags with different color fluorescent material to the end of the entering outlet side, wherein the bag It is characterized in that the presence of the fluorescent agent can be visually confirmed by the colored portion at a stage before being incorporated into the cylindrical main body . According to the present invention, since the bag is directly impregnated with the fluorescent agent, the storage chamber is not necessary, and the presence of the fluorescent agent can be easily confirmed visually, and is easily assembled to the lower part of the receiver dryer. be able to.

  As described above, according to the present invention, it is possible to reliably immerse the fluorescent agent in the liquid refrigerant, to improve the reliability of the refrigerant leakage detection, and to prevent the fluorescent agent from being forgotten to be stored in the bag. It is possible to provide a receiver dryer that can be used.

It is sectional drawing which shows 1st Embodiment of the receiver dryer concerning this invention, Comprising: (a) shows the whole receiver dryer, (b) shows only a bag. It is sectional drawing which shows 2nd Embodiment of the receiver dryer concerning this invention, Comprising: (a) shows the whole receiver dryer, (b) shows only a bag. It is whole sectional drawing which shows an example of the conventional receiver dryer.

  Next, modes for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a first embodiment of a receiver dryer according to the present invention. The receiver dryer 1 is roughly divided into a covered cylindrical main body 2 and a lower end of the main body 2, and is provided with a refrigerant inlet hole 3a and a refrigerant. The header 3 includes an outlet hole 3b, a bag-like bag 4 enclosed in the main body 2, and a strainer 6 fixed to the header 3 so as to cover the refrigerant outlet hole 3b.

  The bag 4 contains a desiccant 5 for adsorbing and removing moisture in the refrigerant, and a storage chamber 4a is provided below the bag 4, and the fluorescent agent 7 is stored in the storage chamber 4a. The fluorescent agent 7 is provided in such a manner that the presence of the fluorescent agent 7 can be confirmed by touching the bag 4 from the outside by hand. For example, it can be formed into various shapes such as plates, grains, pellets, beads, powders, and pastes having moderate rigidity.

  The bag 4 has, for example, a structure in which a plastic nonwoven fabric is folded and stitched into a bag shape. A broken line in FIG. 1 indicates a seam allowance, which can be sewn with a sewing thread or joined by ultrasonic welding or the like.

  When assembling the receiver dryer 1, first, the desiccant 5 and the fluorescent agent 7 are accommodated in a non-woven fabric sewn in a bag shape, and the bag 4 including the desiccant 5 and the fluorescent agent 7 is formed by sewing with a sewing thread. Next, the main body 2 is supported with the opening facing upward, and the bag 4 is accommodated therein. At this time, the bag 4 is inserted into the main body 2 from the end opposite to the side of the storage chamber 4 a that stores the fluorescent agent 7. Finally, the header 3 to which the strainer 6 is caulked and the main body 2 are joined by arc-welding the engaging portion 9 to complete the receiver dryer 1.

  Thereafter, when the receiver dryer 1 is turned upside down during use or installation, the bag 4 descends due to free fall and is placed on the ceiling of the header 3 to be in the state shown in FIG.

  By providing the receiver dryer 1 having the above-described configuration in an automobile air conditioner or the like, the moisture in the refrigerant flowing into the main body 2 from the refrigerant inlet hole 3a is absorbed by the desiccant 5 accommodated in the bag 4, and the strainer 6 to remove foreign matter. Further, when the refrigerant passes through the inside of the main body 2 of the receiver dryer 1, the fluorescent agent 7 comes into contact with the liquid refrigerant C stored in the lower part of the inside of the main body 2, and the fluorescent agent 7 is accompanied by the refrigerant and passes through the refrigerant pipe. When the refrigerant circulates and leaks, the leakage of the refrigerant can be detected by visually observing the fluorescent agent 7 leaked at the same time.

  As described above, in the present embodiment, since the fluorescent agent 7 is provided in the lower portion of the bag 4, the fluorescent agent 7 can be reliably brought into contact with the liquid refrigerant C during use and can be accompanied by the refrigerant. Reliability for detection can be increased.

  Since the storage chamber 4a is formed in the lower part of the bag 4 and the fluorescent agent 7 is stored, the presence of the fluorescent agent 7 can be easily confirmed by touching the portion of the storage chamber 4a from above the bag 4. Furthermore, since the accommodation position of the fluorescent agent 7 becomes clear due to the presence of the accommodation chamber 4a, it is possible to prevent the bag 4 from being erroneously inserted into the main body 2 in the insertion direction.

  Next, a second embodiment of the receiver dryer according to the present invention will be described with reference to FIG. Since the basic configuration of the receiver dryer 11 is the same as that of the receiver dryer 1 in the first embodiment, the same components as those of the receiver dryer 1 are denoted by the same reference numerals and detailed description thereof is omitted.

  The receiver dryer 11 is roughly divided into a covered cylindrical main body 2, a header 3 attached to the lower end of the main body 2, having a refrigerant inlet hole 3 a and a refrigerant outlet hole 3 b, and a bag shape enclosed in the main body 2. Bag 14 and a strainer 6 fixed to the header 3 so as to cover the refrigerant outlet hole 3b.

  The bag 14 has a structure in which a plastic non-woven fabric is folded and stitched into a bag shape. The bag 14 encloses a desiccant 5 for adsorbing and removing moisture in the refrigerant and impregnating the lower part 14a with the fluorescent agent 17 directly. Yes. Note that the color of the fluorescent agent 17 is different from the color of the bag 14. In FIG. 2, the broken line indicates the seam allowance of the bag 14, which can be sewn with a sewing thread or joined by ultrasonic welding or the like.

  When assembling the receiver dryer 11, first, the desiccant 5 is accommodated in a non-woven fabric sewn in a bag shape, and the bag 14 having the desiccant 5 is formed by sewing with a sewing thread, and the lower part 14 a is impregnated with the fluorescent agent 17. Let Next, the main body 2 is supported with the opening facing upward, and the bag 14 is accommodated therein. At this time, the bag 14 is inserted into the main body 2 from the end opposite to the side impregnated with the fluorescent agent 17. Finally, the header 3 to which the strainer 6 is caulked and the main body 2 are joined by arc-welding the engaging portion 9 to complete the receiver dryer 11.

  Thereafter, when the receiver dryer 11 is turned upside down during use or installation, the bag 14 descends due to free fall and is placed on the ceiling portion of the header 3 to be in the state shown in FIG.

  The receiver dryer 11 having the above configuration is also provided in an automobile air conditioner or the like, so that moisture in the refrigerant flowing into the main body 2 from the refrigerant inlet hole 3a is absorbed by the desiccant 5 contained in the bag 14. The foreign matter is removed by the strainer 6. Further, when the refrigerant passes through the inside of the main body 2 of the receiver dryer 11, the fluorescent agent 17 comes into contact with the liquid refrigerant C stored in the lower part of the inside of the main body 2, and the fluorescent agent 17 is accompanied by the refrigerant and passes through the refrigerant pipe. When the refrigerant circulates and leaks, the leakage of the refrigerant can be detected by visually observing the fluorescent agent 17 leaked at the same time.

  As described above, in the present embodiment, since the fluorescent agent 17 is provided in the lower portion of the bag 14, the fluorescent agent 17 can be reliably brought into contact with the liquid refrigerant C and used with the refrigerant during use. Reliability for detection can be increased.

  Further, since the lower part 14a of the bag 14 is impregnated with the fluorescent agent 17 having a color different from that of the bag 14, the presence of the fluorescent agent 17 can be easily confirmed by visual observation, and the accommodation position becomes clear. It is also possible to prevent the insertion direction from being erroneously inserted into the main body 2.

  Furthermore, in the present embodiment, the storage chamber 4a of the bag 4 in the first embodiment is also unnecessary, which leads to a reduction in the manufacturing cost of the bag 14.

DESCRIPTION OF SYMBOLS 1 Receiver dryer 2 Main body 3 Header 4 Bag 4a Storage chamber 5 Desiccant 6 Strainer 7 Fluorescent agent 9 Engagement part 11 Receiver dryer 14 Bag 14a Lower part 17 Fluorescent agent

Claims (2)

A receiver dryer that includes a cylindrical main body provided with a refrigerant inlet and outlet at one end and removes moisture in the refrigerant while storing the refrigerant,
The said tubular body and bag containing the drying agent is sealed,
The bag is formed with a storage chamber for compartmentalizing and storing the fluorescent agent at the end on the entrance / exit side,
In pre-integration stage to the tubular body before Symbol bags, receiver drier, characterized in that it possible confirm the presence of the fluorescent agent in the accommodating chamber by touch. A receiver dryer that includes a cylindrical main body provided with a refrigerant inlet and outlet at one end and removes moisture in the refrigerant while storing the refrigerant,
A bag containing a desiccant is enclosed in the cylindrical main body,
Wherein the bag is provided with a colored portion formed by impregnating a pre-Symbol bags with different color fluorescent material to the end of the entering outlet side,
In pre-integration stage to the tubular body of the bag, features and, Relais receiver dryer that was possible to confirm the presence of the fluorescent agent by visual observation by the colored portion.

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