JP4190668B2 - Receiver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid receiver suitable for an automobile air conditioner.
[0002]
[Prior art]
In general, a liquid receiver used in an air conditioner for an automobile has a function of removing small foreign matters and moisture mixed in the liquid phase refrigerant in addition to storing the liquid phase refrigerant condensed in the condenser. For example, Japanese Patent Laid-Open No. 9-324962 is known.
[0003]
As shown in FIG. 13, the outline of the liquid receiver is as follows. A desiccant 103 that absorbs moisture is disposed on the upper side of the liquid receiver body 101, and a filter 105 that removes small foreign matters mixed on the lower side is disposed. The liquid body 101 is attached to the header pipe 109 of the condenser 107.
[0004]
The liquid receiver main body 101 and the header pipe 109 communicate with each other via a refrigerant inlet 111 and a refrigerant outlet 113. When the liquid phase refrigerant from the refrigerant inlet 111 passes through the desiccant 103 and the filter 105, small foreign substances and Moisture and the like are removed and the refrigerant heads toward the refrigerant outlet 113.
[0005]
The filter 105 is fixedly supported by an opening closing member 115 provided at the bottom opening of the liquid receiver main body 101.
[0006]
As shown in FIG. 14, the opening closing member 115 includes a cylindrical body 117 and a lid portion 119.
[0007]
The cylindrical body 117 is further formed of a mounting portion 121 to which the lid portion 119 is detachably mounted, and a cylindrical support portion 123 that is integrally extended from the mounting portion 121 into the receiver body 101, The filter 105 is arranged in the support portion 123.
[0008]
[Problems to be solved by the invention]
The opening closing member 115 has the inner inner wall surface of the mounting portion 121 as a finished surface, and supports the filter 105 by the support portion 123 in addition to the main function of ensuring a reliable sealing performance with the lid portion 119. It has a shape that doubles as well.
[0009]
For this reason, for example, as shown by the phantom line, when the upper and lower dimensions of the filter 105 are lengthened to increase the volume, the support portion 123 must also be correspondingly extended, and the opening closing member 115 The overall shape becomes larger and larger.
[0010]
In addition, each of the opening closing members 115 corresponding to the size of the filter must be made, which is not desirable in terms of workability, and also causes an increase in cost.
[0011]
Accordingly, an object of the present invention is to provide a liquid receiver that can be reliably supported without being affected by the size of the filter without increasing the cost by a simple device.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a liquid receiver body (11) having a refrigerant inlet (16) and a refrigerant outlet (17) is inserted from one opening. and a desiccant (13) and a filter (15), closed by opening port closure member (33) with the open mouth of the receiver body (11), one end of the filter (15), said receiver A fixed plate (31) supported in the main body (11) and provided with an opening hole (37) through which the liquid refrigerant passes , and the other end of the filter (15) is connected to the opening closing member (33) . On the other hand, the opening hole (37) of the fixed plate (31) has a cylindrical part (55) having a predetermined predetermined insertion contact region into which the opening hole insertion part (57) provided in the filter (15) is inserted. ).
[0013]
Thus, the upper end of the filter is fixed plates, the lower end is supported independently by the opening port closing member.
[0014]
Accordingly, since the fixing plate can be independently adjusted with respect to the support surface of one open port closing member, for example, with respect to a filter that is elongated in the vertical direction to increase the volume. A reliable support state can be obtained. In this case, since the correspondence can be achieved by setting the mounting position of the fixing plate in accordance with the vertical dimension of the filter, the open port closing member is not enlarged. In addition, since the fixed plate has a simple plate shape, it is easy to process and there is no risk of increasing the cost.
[0016]
Further, since a predetermined insertion contact area continuous with the inner wall surface of the cylindrical portion is secured on the outer peripheral surface of the opening hole insertion portion of the filter, a reliable sealing state can be obtained. As a result, the liquid phase refrigerant reliably passes through the filter without passing outside.
[0017]
According to claim 2 of the present invention, the opening hole of the fixed plate is set to a hole diameter through which the desiccant container body can pass.
[0018]
As a result, when the desiccant container body is assembled into the receiver body, if the desiccant container body is inserted from one open port from which the opening closing member is removed, the opening plate passes through the opening hole without difficulty. It can be set on the top without any trouble.
[0019]
【The invention's effect】
As described above, according to the liquid receiver of the present invention, the upper end of the filter can be independently supported by the fixed plate and the lower end can be independently supported by the opening closing member. Therefore, it is possible to independently adjust the mounting position of the fixed plate with reference to the support surface of one open port closing member, so that the filter can be extended in the vertical direction to increase the volume. A reliable support state can be obtained.
[0020]
Moreover, since it can respond by setting the attachment position of a fixed plate according to the vertical dimension of a filter, the enlargement of the opening obstruction | occlusion member which supports the end of a filter is not caused. In addition, since the fixed plate has a simple plate shape, it is easy to process and there is no risk of increasing the cost.
[0021]
Further, a reliable sealing state can be obtained by the cylindrical portion having a continuous predetermined insertion contact region, and the liquid phase refrigerant can surely pass through the filter without passing outside.
[0022]
Moreover, since the container body of the desiccant can be passed through the opening hole of the fixing plate without difficulty, it can be set on the fixing plate without any trouble.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
The first embodiment of the present invention will be specifically described below with reference to the drawings of FIGS.
[0024]
In FIG. 1, reference numeral 1 denotes a condenser, and 3 denotes a liquid receiver disposed on the side of the condenser 1.
[0025]
The condenser 1 is a subcooling unit integrated type as shown in FIG. 2, and is a cooling system in which a pair of left and right header pipes 5, 5 and a header pipe 5 and a header pipe 5 are alternately stacked in the vertical direction. It has the finned cooling tube 9 which comprises a core. The header pipes 5 and 5 are provided with partition plates 10 for inserting both ends of the cooling tube 9 and partitioning the condensing part 7a and the supercooling part 7b. Therefore, when a high-temperature and high-pressure gas-phase refrigerant sent from a compressor (not shown) is introduced from one header pipe 5 through the inlet pipe 5a and passes through the cooling tube 9, the gas-phase refrigerant is cooled and condensed. The condensed and liquefied liquid phase refrigerant is collected by the other header pipe 5 and then stored in the liquid receiver 3. The refrigerant that has been gas-liquid separated by the liquid receiver 3 and sent to the supercooling unit 7b is further cooled in the cooling tube 9 and sent from the outlet pipe 5b to an evaporator (not shown).
[0026]
As shown in FIG. 1, the receiver 3 has a desiccant 13 on the upper side and a filter on the lower side in a vertically long cylindrical receiver body 11 fixedly supported along the one header pipe 5. 15 are respectively arranged and communicated with the header pipe 5 through the refrigerant inlet 16 and the refrigerant outlet 17 so as to be separated into liquid and gas and temporarily store the liquid refrigerant.
[0027]
The desiccant 13 absorbs moisture in the liquid-phase refrigerant, and uses silica gel, molecular sieve, or the like, and is filled in a cylindrical container body 21 made of felt.
[0028]
The filter 15 has a shape in which a mesh member 27 made of a mesh that prevents passage of small foreign substances is attached to the peripheral wall surface of the cylindrical body 25 having the flange portion 23 on the upper side. A small foreign matter mixed in the liquid-phase refrigerant is removed when the liquid-phase refrigerant that has entered through the opening 29 is passed through the mesh member 27.
[0029]
The flange portion 23 above the filter 15 is supported by a fixing plate 31 that is independently supported in the receiver body 11, and the bottom portion of the filter 15 is supported by a lid portion 35 that constitutes an opening closing member 33. Has been.
[0030]
The fixed plate 31 is formed in a single disk shape, has an opening hole 37 through which a liquid-phase refrigerant passes in a central portion, and a peripheral edge that contacts the inner peripheral surface of the liquid receiver body 11 from the outside. Fixed and supported by caulking P.
[0031]
Therefore, as shown in FIG. 4, in the type in which the abutting surface 39 is brazed to constitute the liquid receiver body 11, there is obtained an advantage of preventing the brazed portion from opening.
[0032]
The opening hole 37 of the fixing plate 31 is made larger than the outer diameter of the container body 21 filled with the desiccant 13 so that the container body 21 can pass through the opening hole 37 without any trouble. Yes.
[0033]
Note that the fixing plate 31 is not necessarily attached to the caulking P. For example, as shown in FIG. 5 and FIG. 6, while the slit 41 having the same thickness of the fixing plate 31 into which the fixing plate 31 is inserted is provided on the peripheral wall surface of the receiver body 11 over a region of approximately 180 degrees, 31 may be provided with a semicircular arc-shaped flange 31 a facing the slit 41 so that the fixing plate 31 can be fixedly supported from the outside of the liquid receiver body 11.
[0034]
The opening opening blocking member 33 includes a mounting portion 43 and the lid portion 35 described above, and the mounting portion 43 is inserted into the bottom opening of the liquid receiver body 11 and brazed.
[0035]
The inner wall surface of the mounting portion 43 is made to have a finished surface that ensures sealing with the lid portion 35. Further, the opening 45 of the mounting portion 43 to which the lid portion 35 is mounted serves as an inlet / outlet for inserting the container body 21 and the filter 15 of the desiccant 13 into the receiver body 11 from below.
[0036]
The lid portion 35 is provided with an O-ring 40 along the circumferential groove 47 and has a knob portion 49.
[0037]
The lid portion 35 is supported by a detachable support washer 51 after completion of insertion into the mounting portion 43. After removing the support washer 51, the lid portion 35 can be removed by pulling downward with the knob portion 49. Become.
[0038]
The liquid receiver 3 configured as described above will be described. First, the mounting position from the support surface 35a of the lid portion 35 is set according to the size of the filter 15, and the fixing plate 31 is fixed to the liquid receiver body 11. After the support, the container body 21 of the desiccant 13 is first inserted from the opening 45 of the mounting portion 43, passed through the opening hole 37 of the fixing plate 31, and deviated from the opening hole 37 to be temporarily supported. Next, after inserting the filter 15 through the opening hole 37 and inserting it fully until the flange portion 23 comes into contact with the fixing plate 31, the lid portion 35 is subsequently inserted to support the lower side of the filter 15. Next, by attaching the support washer 51, the assembly of the container body 21 and the filter 15 of the desiccant 13 is completed.
[0039]
At this time, since the fixing plate 31 supporting the upper side of the filter 15 is independent, the mounting position can be adjusted independently with reference to the support surface 35a of the lid portion 35. As a result, for example, a reliable support state can be obtained for the filter 15 which is elongated in the vertical direction to increase the volume. At this time, the opening closing member 33 that supports the lower side does not need to be large and does not increase in size. Further, since the fixed plate 31 has a simple plate shape, it is easy to process and there is no risk of increasing the cost.
[0040]
In the case of this embodiment, as shown in FIG. 7, the same effect can be expected as a filter 15 having a laminated structure in which disc-like felts 53 are stacked in multiple stages.
[0041]
On the other hand, according to the liquid receiver 3 assembled as described above, when the liquid phase refrigerant from the refrigerant inlet 16 passes through the desiccant 13 and the filter 15, respectively, the moisture contained in the liquid phase refrigerant and Small foreign matter is removed, and it goes to the refrigerant outlet 17.
[0042]
8 and 9 show a second embodiment of the fixed plate 31 and the filter 15.
[0043]
That is, the opening hole 37 of the fixed plate 31 is formed in the shape of the cylindrical portion 55 rising upward, and the opening hole insertion portion 57 that is fitted and inserted into the cylindrical portion 55 is provided at the center portion on the upper surface side of the filter 15. It is to make.
[0044]
Since the other components are the same as those in the first embodiment, the same reference numerals are used and detailed description thereof is omitted.
[0045]
Therefore, according to the second embodiment, in addition to the effects of the first embodiment, a certain sealing region is ensured by the predetermined predetermined insertion contact region between the opening insertion portion 57 and the cylindrical portion 55. Therefore, the liquid phase refrigerant from the refrigerant inlet 16 does not pass through the filter 15 but surely passes through the inside. For this reason, the small foreign material mixed in the liquid phase refrigerant can be surely removed.
[0046]
In this case, as shown in FIG. 10, the outer peripheral edge of the fixed plate 31 may have a shape having a bent portion 59 that is bent downward.
[0047]
Therefore, according to this embodiment, the contact area with the inner wall surface of the receiver body 11 is expanded by the bent portion 59, and a reliable caulking P state is obtained.
[0048]
In the case of the second embodiment described above, as shown in FIGS. 11 and 12, the same effect can be expected even if a spiral filter 15 having a felt 63 wound around a core 61 is employed. . Note that the condenser 1 of FIG. 2 can be used upside down.
[Brief description of the drawings]
FIG. 1 is a sectional view of a liquid receiver according to the present invention attached to a header pipe of a condenser.
FIG. 2 is an overall perspective view of a liquid receiver attached to a header pipe of a condenser.
FIG. 3 is an explanatory view showing a state in which a desiccant container body, a filter, and a lid are removed from the receiver body.
FIG. 4 is an explanatory view showing a caulking state of a fixed plate.
FIG. 5 is an explanatory diagram in which a fixed plate is supported by a slit.
6 is a cross-sectional view showing a state in which the support of the fixed plate in FIG. 5 is completed.
FIG. 7 is an explanatory diagram in which a felt type laminated structure filter is supported by a fixed plate and a lid.
FIG. 8 is an explanatory view showing a second embodiment in which the opening hole of the fixing plate is a cylindrical body, and an opening hole insertion portion is provided in the center of the upper surface of the filter to be fitted into the cylindrical body.
FIG. 9 is an explanatory view showing a support completion state of the filter of FIG. 8;
FIG. 10 is an explanatory view similar to FIG. 8 in which the outer peripheral edge of the fixed plate is bent to expand the support area.
FIG. 11 is an explanatory diagram illustrating a filter having a spiral structure using felt in the second embodiment.
12 is a schematic plan view of FIG. 11 viewed from above. FIG.
FIG. 13 is a cross-sectional view of a liquid receiver showing a conventional example.
FIG. 14 is an explanatory view showing a support state of a conventional filter.
[Explanation of symbols]
11 Receiver Body 13 Desiccant 15 Filter 16 Refrigerant Inlet 17 Refrigerant Outlet 31 Fixing Plate 33 Opening Port Blocking Member

Claims (2)

A receiver body (11) having a refrigerant inlet (16) and a refrigerant outlet (17) is provided with a desiccant (13) and a filter (15) inserted from one open port, and the receiver closed by the main body (11) opening port closing member open port (33), one end of the filter (15), said supported on receiver body (11), opening the liquid phase refrigerant passing through holes ( 37), the other end of the filter (15) is supported by the opening closing member (33) , while the opening hole (37) of the fixing plate (31) A liquid receiver comprising a cylindrical portion (55) having a predetermined continuous insertion contact region into which an opening insertion portion (57) provided in the filter (15) is inserted .   2. The liquid receiver according to claim 1, wherein the opening hole (37) of the fixing plate (31) is set to a hole diameter through which the container body (21) of the desiccant (13) can pass.

Images