JP6399890B2 - Receiver dryer - Google Patents

Description

  The present invention relates to a receiver dryer for storing a refrigerant circulating in a refrigeration cycle and for separating and removing moisture in the refrigerant by gas-liquid separation.

  Conventionally, a receiver tank, an accumulator, and the like have been used to store a refrigerant circulating in the refrigeration cycle and to separate and remove moisture by gas-liquid separation. The present applicant, for example, as a receiver tank of this type, in Patent Document 1, for example, a covered cylindrical main body, a columnar header that seals a lower opening of the main body, and a dry sealed in the main body and header We have applied for a receiver dryer consisting of a bag containing a drug.

JP 2010-144935 A

  When assembling the receiver dryer shown in Patent Document 1, first, a bag containing desiccant is inserted into the body, the lower end portion of the main body is placed on the stepped portion of the header, and then the stepped portion is arc welded. This completes the receiver dryer.

  In the receiver dryer shown in Patent Literature 1, the desiccant-containing bag is arranged in a free state without being fixed in the tank body, and the positioning effect of the desiccant-containing bag in the tank body is weak. For this reason, at the time of welding the fuselage and the header, if welding is performed with the bag containing the desiccant in contact with the inner peripheral surface of the header (or strainer), the heat at the time of welding to the bag containing the desiccant is the fuselage, There is a concern that the material may be transmitted directly from the header or strainer, and the material of the bag with desiccant cannot be used, such as a material with low heat resistance. .

  Furthermore, when a receiver dryer is used in an environment with a lot of vibration such as a vehicle air conditioner, the bag containing the desiccant in the tank body fluctuates (moves) due to vibration applied to the receiver dryer, and the inner peripheral surface of the tank body Not only is there a possibility that the bag containing the desiccant may be damaged by rubbing the bag containing the desiccant, but if the bag containing the desiccant fluctuates and deviates from the center of the tank body, the bag containing the desiccant and the inner wall of the fuselage The part which the space | interval becomes narrow locally arises, The subject that the flow of the refrigerant | coolant in a fuselage | body body worsened and gas-liquid separation property fell remained.

  Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and can easily and stably position a desiccant-containing bag placed in a tank body while keeping the component cost low. An object of the present invention is to provide a receiver dryer that can prevent fluctuations in a bag containing a desiccant.

In order to achieve the above object, a receiver dryer according to the present invention has a tank body comprising a bottomed cylindrical body having one end opened, a header that seals the opening of the body, and an opening in the header. A receiver dryer comprising a refrigerant inflow hole and a refrigerant outflow hole, and a desiccant-containing bag disposed in the tank body, wherein the desiccant-containing bag is positioned and held in the center of the space in the tank body The member is provided ,
The bag mounting member includes a horizontal plate in which a seam allowance of the desiccant-containing bag is inserted to form a slit for holding the desiccant-containing bag, and is bent from both longitudinal end portions of the horizontal plate. A pair of rising curved plates in contact with the inner peripheral surface, and locking pieces that are horizontally bent inward from the tips of the rising curved plates, and the locking pieces are arranged on the outer peripheral surface of the header. It is characterized by being locked in the locking groove formed in the above.

  Further, in the receiver dryer according to the present invention, the desiccant-containing bag is made of a flexible material having a high flexibility, and a seam allowance and an excess portion formed at the lower end of the desiccant-containing bag are inserted into the slit. The desiccant-containing bag is held in the slit.

  Moreover, the receiver dryer according to the present invention is characterized in that the bag mounting member is bent at both lateral sides of the horizontal plate to form a pair of reinforcing pieces.

  According to the receiver dryer of the present invention, when welding the fuselage and the header, the bag containing the desiccant in the tank body is positioned at the center of the tank body away from the inner peripheral surface of the fuselage. This makes it difficult for the heat to be transmitted from the body to the desiccant-containing bag, and the adverse effect of the desiccant-containing bag due to heat can be suppressed. Moreover, by holding the desiccant-containing bag on the bag mounting member at the center of the space in the body, it is possible to extend the entire length of the desiccant-containing bag as long as possible. The width can be reduced. Thereby, the refrigerant | coolant flow in a fuselage | body (3) becomes smooth, and can improve a gas-liquid separability.

  In addition, it is possible to prevent the bag containing the desiccant from being damaged by rubbing against the inner peripheral surface of the fuselage due to vibrations, etc., and to prevent fluctuations such as the bag containing the desiccant being displaced from the center of the fuselage. The flow of the refrigerant in the inside is not deteriorated. Moreover, the desiccant-containing bag can be attached simply by inserting the seam allowance and excess part of the desiccant-containing bag into the slit formed in the bag attaching member and holding the desiccant-containing bag against the bag attaching member. And the assembly work can be simplified.

  Moreover, by forming a pair of reinforcing pieces on the horizontal plate, the strength of the bag mounting member can be increased and the earthquake resistance can be improved.

It is a longitudinal cross-sectional view of the receiver dryer which shows the Example of this invention. It is an AA line expanded sectional view of Drawing 1 showing an example of the present invention. It is the BB sectional drawing of FIG. 2 which shows the Example of this invention. It is a top view of the bag attachment member which shows the Example of this invention. It is CC sectional view taken on the line of FIG. 4 which shows the Example of this invention.

  Hereinafter, a receiver dryer 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  1 to 5 show a receiver dryer 1 according to an embodiment of the present invention. As shown in FIG. 1, the receiver dryer 1 includes a tank body 2 including a body 3 and a header 4, and a tank body 2. It is composed of a built-in component such as a bag body 7b containing a desiccant 7a (hereinafter collectively referred to simply as a bag 7 containing a desiccant).

  The tank body 2 includes a bottomed cylindrical body 3 having an open lower end, and a header 4 that is welded to the body 3 via a welded portion 10 and seals the opening end of the body 3. The body 3 and the header 4 are both made of a metal such as an aluminum alloy.

  The header 4 is formed in a circular shape when viewed from the bottom, and the header 4 is formed with a refrigerant inflow hole 8 and a refrigerant outflow hole 9 penetrating in the vertical direction. The upper part of the refrigerant outflow hole 9 is made of, for example, stainless steel. A strainer 26 composed of the mesh member 25 is fixed to the header 4 by a crimping portion 26a. Further, the upper portion of the header 4 is formed with a step portion 5 by a small diameter portion 4 a, and the body 3 and the header 4 are welded and joined by the welded portion 10 with the opening end portion of the body 3 placed on the step portion 5. Yes.

  In the body 3, a desiccant-containing bag 7 in which a desiccant (hygroscopic agent) 7a is housed in a bag body 7b made of a flexible material such as felt is disposed. As shown in FIGS. 1 and 3, the desiccant-containing bag 7 is formed by overlapping the edges of a bag body 7b made of a flexible material folded in half so as to enclose the desiccant (moisture absorbent) 7a. The bag 7 is configured by sewing one side edge, an upper edge, and a lower edge. Thereby, the seam allowance S in the case of sewing is formed in the up-and-down edge and one side edge of the bag 7 containing a desiccant. In addition, the bag 7 is filled with the desiccant 7a so that there is no gap. As a result, the material constituting the bag 7 is stretched by the desiccant 7a, and the bag 7 containing the desiccant is elongated and hard and extends into a rod shape. Has been. As a result, the desiccant-containing bag 7 disposed in the tank main body 2 is held so as to stretch between the upper surface of the body 3 and the bag attachment member 15 as described later. By adopting such a configuration, the movement of the desiccant 7a in the bag 7 is suppressed, and the vibration resistance is improved.

  In the receiver dryer 1 of the present invention, there is provided a metal bag attachment member 15 made of, for example, stainless steel, for positioning the desiccant-containing bag 7 away from the step portion 5 at the welding position in the body 3. It has been. As shown in FIGS. 4 and 5, the bag attachment member 15 is formed in a substantially U shape, and a pair of rising curved plates 19 and 19 are formed on both sides, and the desiccant-containing bag is formed in the center. 7 is provided with a horizontal band plate-like horizontal plate 16 for fixing 7. The horizontal plate 16 is formed with an elongated slit 17 for inserting a seam allowance S on the lower edge of the desiccant-containing bag 7 along the longitudinal direction thereof. In addition, a pair of reinforcing pieces 18 and 18 are bent at both end edges in the short direction of the horizontal plate 16, and the pair of rising curved plates 19 and 19 are formed from both ends in the longitudinal direction of the horizontal plate 16. Is bent. As shown in FIG. 4, each of the rising curved plates 19, 19 is formed to have a curvature corresponding to the inner peripheral surface of the body 3. In order to reinforce and attach to the header 4, the leading end portions of the rising curved plates 19, 19 that are bent at both ends in the longitudinal direction of the horizontal plate 16 are horizontally directed toward the inner side (the horizontal plate 16 The locking pieces 20 and 20 are formed integrally with each other. An annular locking groove 21 is formed on the outer peripheral surface of the small diameter portion 4 a of the header 4 inserted into the body 3, and the locking groove 21 is bent in the bag mounting member 15. The bag attachment member 15 is held with respect to the header 4 by inserting and locking the pieces 20 and 20.

  In the present embodiment configured as described above, the procedure for assembling the desiccant-containing bag 7 will be described with reference to FIGS. First, the desiccant-containing bag 7 is inserted and held in the bag attaching member 15 by inserting the slit 17 formed in the bag attaching member 15 so as to push the seam allowance S on the lower edge of the desiccant-containing bag 7. That is, since the desiccant-containing bag 7 is made of a flexible material such as felt, the seam allowance S of the lower edge of the desiccant-containing bag 7 is set as a bag mounting member as shown in FIG. 15 is inserted into the slit 17 and further pushed into the surplus part S1 of the desiccant-containing bag 7 (the surplus part in which the desiccant 7a can be enclosed), whereby the surplus part S1 is caused by the elastic restoring force of the desiccant-containing bag 7 and the like. The bag 7 spreads outward and is prevented from slipping out of the slit 17, whereby the desiccant-containing bag 7 is positioned and held with respect to the bag mounting member 15 in a state of retaining.

  Next, by locking the locking pieces 20, 20 of the bag mounting member 15 in the locking groove 21 formed in the small diameter portion 4 a of the header 4, the bag mounting member 15 holding the desiccant-containing bag 7 is attached to the header 4. Attach to. Thereafter, the desiccant-containing bag 7 is inserted into the body 3 from the upper end thereof, the small diameter portion 4a of the header 4 is fitted into the opening of the body 3, and the opening end of the body 3 is abutted against the step 5 of the header 4. In this state, the header 4 and the body 3 are welded together by the welded portion 10. By doing in this way, the bag 7 with a desiccant in the tank main body 2 can be kept away from the welding part 10 (step part). At this time, the rising curved plates 19, 19 at both ends of the bag attachment member 15 are in close contact with the inner peripheral surface of the body 3, and the center of the horizontal plate 16 of the bag attachment member 15 is in contact with the body 3. Therefore, the lower end of the desiccant-containing bag 7 inserted into the slit 17 formed in the horizontal plate 16 is also accurately positioned at the center of the lower space of the body 3. Thus, the desiccant-containing bag 7 can be positioned and held at the center of the space of the body 3 while being separated from the welded portion 10 (stepped portion). The insertion of the desiccant bag 7 into the fuselage 3 and the welding of the header 4 to the fuselage 3 are easy when the fuselage 3 is in the horizontal position. However, as shown in FIG. It is also effective to perform upside down in FIG.

  The receiver dryer 1 configured as described above is arranged in the refrigeration cycle in the vertical relationship shown in FIG. The gas-phase refrigerant that has been gas-liquid separated by absorbing the moisture in the refrigerant flowing into the body 3 from the refrigerant inflow hole 8 by the desiccant 7 a is removed from the refrigerant outflow hole 9 after removing the foreign matter by the strainer 26. The bag 7 containing desiccant that flows out and absorbs moisture in the refrigerant is positioned and held in the tank body 2 by the bag mounting member 15 in the tank body 2. Thus, when the body 3 and the header 4 are welded and joined, the bag 7 containing the desiccant in the tank body 2 maintains a distance from the welded portion 10 (step portion 5), as shown in FIG. Since it is positioned accurately at the center of the tank body 2 away from the inner peripheral surface of the body 3, heat during welding is hardly transmitted from the body 3 to the bag 7 containing the desiccant. Adverse effects such as melting can be suppressed.

  In addition, when the receiver dryer 1 is used, for example, for an air conditioner of a vehicle, the bag 7 containing the desiccant may be damaged by rubbing against the inner peripheral surface of the body 3 due to vibration during use from the vehicle side. Furthermore, a portion where the distance between the desiccant-containing bag 7 and the inner wall of the fuselage 3 is narrowed due to the variation of the desiccant-containing bag 7 causing the desiccant-containing bag 7 to deviate from the center of the fuselage 3 occurs. The flow of the refrigerant in the body 3 and thus the gas-liquid separation can be kept good.

  The desiccant-containing bag 7 can be easily positioned and held simply by inserting the seam allowance S of the lower edge of the desiccant-containing bag 7 into the slit 17 formed in the bag attaching member 15. Then, the locking pieces 20, 20 of the bag mounting member 15 holding the desiccant-containing bag 7 are locked in the locking grooves 21 formed in the header 4, and the bag mounting member 15 is mounted on the header 4. Thereafter, the header 4 and the body 3 are welded together by the welded portion 10 in a state where the small diameter portion 4 a of the header 4 is fitted into the lower end opening of the body 3 and the lower end edge of the stepped portion 5 body 3 of the header 4 is abutted. It is possible to position the bag 7 containing desiccant held by the bag mounting member 15 in the center of the body 3 with the rising curved plates 19 and 19 of the bag mounting member 15 being in close contact with the inner peripheral surface of the body 3. it can. In other words, the desiccant-containing bag 7 can be easily positioned at the center of the body 3 away from the inner peripheral surface of the body 3 by adding only one part of the bag attachment member 15, and the desiccant-containing bag 7 can also be attached by drying. Since the seam allowance S of the lower edge of the bag 7 containing the agent is inserted into the slit 17 of the bag mounting member 15, the bag mounting member 15 itself has a very simple structure, so that the cost of parts can be kept low. it can.

  Further, by holding the desiccant-containing bag 7 on the bag mounting member 15 in the lower space in the body 3 and holding the desiccant-containing bag 7 so as to stretch in the body 3, the entire length of the desiccant-containing bag 7 can be increased. By extending as long as possible, the width of the bag 7 containing the desiccant can be made relatively narrow, the flow of the refrigerant in the body 3 becomes smooth, and the gas-liquid separation property can be improved. Further, the rising curved plates 19 and 19 at both ends of the bag mounting member 15 are in close contact with each other along the inner peripheral surface of the body 3, and a pair of reinforcing pieces 18 and 18 are attached to the horizontal plate 16 of the bag mounting member 15. By forming, the strength of the bag mounting member 15 can be improved, and the earthquake resistance of the bag mounting member 15 can be improved.

  As mentioned above, although the optimal one Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, an example in which a pair of rising curved plates 19 and 19 are provided at both ends of the strip-like horizontal plate 16 as the shape of the bag mounting member 15 is shown. When the rising curved plate is bent at the end of each horizontal plate and a total of four rising curved plates are brought into contact with the inner peripheral surface of the body 3, a bag 7 containing a desiccant with the rising curved plate is formed. Therefore, the shape of the bag mounting member 15 and the structure for mounting the header 4 on the bag mounting member 15 are not limited to the above embodiment. In addition, terms such as “upward” used in the present specification are used in the positional relationship shown in FIG. 1, but the positional relationship does not indicate the absolute positional relationship of the constituent elements of the present invention. Absent.

DESCRIPTION OF SYMBOLS 1 Receiver dryer 2 Tank main body 3 Body 4 Header 7 Bag with desiccant 8 Refrigerant inflow hole 9 Refrigerant outflow hole 10 Welding part 15 Bag attachment member 16 Horizontal plate 17 Slit 18 Reinforcement piece 19 Standing curved plate 20 Engagement piece 21 Engagement groove S seam allowance S1 surplus part

Claims (3)

A tank body comprising a cylindrical body with a bottom having an opening at one end and a header for sealing the opening of the body, a refrigerant inflow hole and a refrigerant outflow hole opening in the header, and the tank body are disposed in the tank body. A receiver dryer with a bag containing a desiccant,
A bag attachment member is provided for positioning and holding the desiccant-containing bag in the center of the space in the tank body ;
The bag mounting member includes a horizontal plate in which a seam allowance of the desiccant-containing bag is inserted to form a slit for holding the desiccant-containing bag, and is bent from both longitudinal end portions of the horizontal plate. A pair of rising curved plates in contact with the inner peripheral surface, and locking pieces that are horizontally bent inward from the tips of the rising curved plates, and the locking pieces are arranged on the outer peripheral surface of the header. A receiver dryer, wherein the receiver dryer is locked in the locking groove . The desiccant-containing bag is made of a flexible material rich in flexibility, and a seam allowance and an excess portion formed at the upper end of the desiccant-containing bag are inserted into the slit, and the desiccant-containing bag is inserted into the slit. The receiver dryer according to claim 1 , wherein the receiver dryer is held. 3. The receiver dryer according to claim 1, wherein the bag attachment member is formed by bending both sides of the horizontal plate in the short direction to form a pair of reinforcing pieces.

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