Multi-filtering automobile air conditioner receiver-drier

Abstract

A multi-filtering automobile air conditioner receiver-drier comprises an outer barrel, a middle sealing body, a knob body and a filter, one end of the middle sealing body is connected with the knob body, the other end of the middle sealing body is connected with the filter, a plurality of assembly insertion blocks close to the inlet end of the knob body are arranged on the inner wall of the knob body, and the assembly insertion blocks are distributed in an annular array mode with the center of the knob body as the circle center. The assembling insertion blocks are used for being connected with the assembling frame, a surrounding wall and an installation space limited in the surrounding wall are formed on the assembling frame, and the installation space is used for arranging a filter plate for filtering impurities in air in advance, a filter plate limiting plate located at the rear end of the filter plate and a filter plate restraining plate located at the front end of the filter plate. According to the principle of the rotary knob, the filter plate is arranged at the inlet end of the rotary knob body, so that tiny impurities or fused impurities fused with water in a pipeline can be filtered in advance, the workload of the filter is reduced, the effective filtering time of the filter is prolonged, and the maintenance interval time is also prolonged.

Description

Technical Field

[0001] This utility model relates to automotive parts, and in particular to a multi-filtration automotive air conditioning liquid receiver dryer. Background Technology

[0002] The liquid receiver dryer is a special component in an air conditioning system. It has been continuously improved and updated during its development. Its main functions are "storage" and "drying". In the refrigeration principle, the refrigerant achieves the effect of absorbing and releasing heat through the transformation of its physical form.

[0003] CN219995605U discloses an automotive air conditioning receiver-dryer with an easy-to-replace filter, comprising an outer cylinder, an intermediate sealing body, a knob body, and a filter disposed within the outer cylinder. One end of the intermediate sealing body is connected to the knob body, and the other end is connected to the filter. An extension body is provided on the filter, and the extension body has an assembly base surface. A positioning unit is provided on the assembly base surface. The inner cavity of the intermediate sealing body has an assembly mating surface that contacts the assembly base surface. A positioning node is provided on the assembly mating surface to define the final assembly position of the extension body on the intermediate sealing body. A first guide passage and a second guide passage are also provided on the assembly mating surface to guide the positioning unit to the positioning node via a first assembly direction and a second assembly direction. This receiver-dryer mainly relies on the filter to absorb moisture and minor impurities in the sealed air conditioning pipes. However, it has a drawback: it relies on only one filtration component, the filter, to filter moisture and minor impurities. However, the moisture and minor impurities will merge before reaching the filter, resulting in an increase in the volume of the impurities. This reduces the effective filtration time of the filter and shortens the maintenance interval, thereby increasing maintenance costs. Utility Model Content

[0004] This invention aims to overcome the shortcomings of the prior art by providing a multi-filtration automotive air conditioning liquid receiver dryer to solve the aforementioned problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This multi-filtration automotive air conditioning liquid receiver dryer includes an outer cylinder, an intermediate sealing body, a knob body, and a filter disposed within the outer cylinder. One end of the intermediate sealing body is connected to the knob body, and the other end is connected to the filter. Several assembly blocks are disposed on the inner wall of the knob body near its inlet end. The assembly blocks are arranged in a circular array with the center of the knob body as the center. The assembly blocks are used to connect to the assembly frame. An enclosure wall and an installation space confined within the enclosure wall are formed on the assembly frame. The installation space is used to install a filter plate for pre-filtering impurities in the air, a filter plate limiting plate located at the rear end of the filter plate, and a filter plate constraint plate located at the front end of the filter plate. The filter plate limiting plate is fixedly disposed on the enclosure wall. The outer peripheral surfaces of the filter plate and the filter plate constraint plate are in contact with the enclosure wall, and the contact can generate a tight force to prevent the filter plate and the filter plate constraint plate from leaving the installation space.

[0006] To further improve the design, the rear end face of the assembly block is fixed with an assembly frame limiting plate to define the final assembly position of the assembly frame within the knob body.

[0007] Further improvements include a locking rod with a locking notch located at the center of the front end face of the assembly block, and a swingable locking arm with a locking notch on the assembly frame. The locking arm engages with the locking rod through the combination of the locking notch and the locking notch.

[0008] Further improvements include the following: the filter plate limiting plate is provided with several rod groups, which are arranged in a circular array with the center of the knob body as the center. Each rod group has at least two rods symmetrically distributed on both sides. The rods extend along the assembly direction of the filter plate or filter plate constraint plate. The filter plate is provided with transition holes that match the position and number of the rods. The filter plate constraint plate is provided with locking holes that match the position and number of the rods. The rods pass through the transition holes and lock into the locking holes.

[0009] Further improvements include dividing the locking socket into a sliding part and a locking part along the assembly guide, with the insertion rod and sliding part having a clearance fit and the locking part having a tight fit.

[0010] Further improvements were made, with the gap between the locking socket and the insertion rod gradually decreasing along the assembly guide.

[0011] To further improve the design, two symmetrically distributed gripping parts are added to the filter plate constraint plate.

[0012] The beneficial effects of this utility model are:

[0013] This invention, by setting a filter plate at the inlet end of the knob body, can pre-filter out minute impurities in the pipeline or impurities that have already fused with water, thereby reducing the workload of the filter, increasing the effective filtration time of the filter, and extending the maintenance interval. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the knob body of this utility model, used to show the assembly frame, filter plate and other components set in the knob body;

[0016] Figure 3 This is a schematic diagram of the structure of the knob body of this utility model, which hides the filter plate, filter plate limiting plate, and filter plate constraint plate;

[0017] Figure 4 This is a schematic diagram of the present invention. Figure 3 A magnified view of part A in the middle;

[0018] Figure 5 This is a full sectional view of the assembled components of the present invention, including the knob body and the assembly frame, to show the mating state of the assembly plug and the assembly frame.

[0019] Figure 6 This is a schematic diagram of the present invention. Figure 5 A magnified view of part B in the middle section;

[0020] Figure 7 This is a full sectional view of the assembled components of the present invention, including the knob body and the assembly frame, to show the engagement state of the plug rod, the transition socket, and the locking socket.

[0021] Figure 8 This is a schematic diagram of the present invention. Figure 7 A magnified view of part C in the middle. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Referring to the attached diagram: This multi-filtration automotive air conditioning receiver-dryer includes an outer cylinder 1, an intermediate sealing body 2, a knob body 3, and a filter 4 disposed within the outer cylinder 1. One end of the intermediate sealing body 2 is connected to the knob body 3, and the other end is connected to the filter 4. Several assembly blocks 31 are disposed on the inner wall of the knob body 3 near its inlet end. The assembly blocks 31 are arranged in a circular array around the center of the knob body 3. The assembly blocks 31 are used to connect to an assembly frame 5, and an enclosure is formed on the assembly frame 5. The enclosure 51 and the installation space 52 within the enclosure 51 are used to install a filter plate 6 for pre-filtering impurities in the air, a filter plate limiting plate 7 located at the rear end of the filter plate 6, and a filter plate constraint plate 8 located at the front end of the filter plate 6. The filter plate limiting plate 7 is fixedly installed on the enclosure 51. The outer peripheral surfaces of the filter plate 6 and the filter plate constraint plate 8 are in contact with the enclosure 51, and the contact can generate a tight force to prevent the filter plate 6 and the filter plate constraint plate 8 from leaving the installation space 52. The principle of this utility model is that by setting a filter plate 6 at the inlet end of the knob body 3, the small impurities in the pipeline or the impurities that have been mixed with water can be filtered in advance, thereby reducing the workload of the filter 4, which increases the effective filtration time of the filter and extends the maintenance interval. Furthermore, by using the assembly frame 5, the filter plate limiting plate 7, and the filter plate constraint plate 8, the use position of the filter plate 6 can be clearly defined, and the filter plate 6 can be disassembled. Disassembly is for cleaning the impurities attached to the filter plate 6, thereby ensuring the filtration effect of the filter plate 6.

[0024] The rear end face of the assembly plug 31 is fixed with an assembly frame limiting plate 31-a, which limits the final assembly position of the assembly frame 5 in the knob body 3. This setting makes it convenient for the assembly frame 5 to quickly confirm its final assembly position in the knob body 3 through the limiting plate 31-a when it is combined with the assembly plug 31, without the need for adjustment.

[0025] A locking rod 9 with a locking notch 91 is provided at the center of the front end face of the assembly plug 31. A swingable locking arm 10 with a locking notch 101 is provided on the assembly frame 5. The locking arm 10 is locked to the locking rod 9 by the combination of the locking notch 101 and the locking notch 91. This arrangement prevents the assembly frame 5 from separating from the assembly plug 31 after they are engaged. Specifically, the locking arm 10 is swung so that the locking notch 101 of the locking arm 10 enters the locking notch 91 of the locking rod 9, thereby generating a constraint force that prevents the assembly frame 5 from moving away from the assembly direction. This achieves the purpose of preventing the assembly frame 5 from separating from the assembly plug 31. Furthermore, the locking arm 10 uses a rivet as a shaft, which makes the locking arm 10 have resistance when swinging. The resistance also makes it difficult for the locking arm 10 to separate from the locking rod 9.

[0026] The filter plate limiting plate 7 is provided with several rod groups 71. The rod groups 71 are arranged in a circular array with the center of the knob body 3 as the center. Each rod group 71 has at least two rods 71-a symmetrically distributed on both sides. The rods 71-a extend along the assembly direction of the filter plate 6 or the filter plate constraint plate 8. The filter plate 6 is provided with transition holes 61 that match the position and number of the rods 71-a. The filter plate constraint plate 8 is provided with locking holes 81 that match the position and number of the rods 71-a. The rods 71-a pass through the transition holes 61 and lock. The locking engagement of the insertion hole 81 ensures that the filter plate limiting plate 7 and the filter plate constraint plate 8 can stably constrain the filter plate 6 between them, thereby resisting the vibration during vehicle operation. The structure is simple and easy to connect. The filter plate limiting plate 7 and the filter plate constraint plate 8 can be connected and assembled by inserting the rod 71-a through the transition insertion hole 61 of the filter plate 6 and engaging with the locking insertion hole 81 of the filter plate constraint plate 8. Moreover, the locking engagement of the rod 71-a and the locking insertion hole 81 ensures the stability of the connection between the two.

[0027] The locking socket 81 is divided into a sliding part 81-a and a locking part 81-b along the assembly guide. The insertion rod 71-a is in clearance fit with the sliding part 81-a and in tight fit with the locking part 81-b. This arrangement achieves a locking fit between the insertion rod 71-a and the locking socket 81, making the connection and assembly between the filter plate limiting plate 7 and the filter plate constraint plate 8 stable and able to resist the vibration during vehicle operation. At the same time, this connection and assembly does not require tools or additional parts such as screws, making it suitable for quick and convenient assembly.

[0028] The mating gap between the locking socket 81 and the insertion rod 71-a gradually decreases along the assembly guide, and the change in the hole width is linear, making the insertion process relatively smooth and avoiding jamming during the connection assembly.

[0029] The filter plate constraint plate 8 is provided with two symmetrically distributed gripping parts 82. This arrangement makes it convenient for users to remove the filter plate constraint plate 8, and can apply sufficient force to resist the resistance brought about by the tight fit between the locking part 71-a2 of the insertion rod 71-a and the locking hole 81.

[0030] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A multi-filtered automobile air conditioner liquid accumulator dryer, comprising an outer cylinder (1), and an intermediate sealing body (2), a knob body (3), and a filter (4) arranged in the outer cylinder (1), one end of the intermediate sealing body (2) being connected to the knob body (3), and the other end being connected to the filter (4), characterized in that: The inner wall of the knob body (3) is provided with a plurality of assembly blocks (31) near the inlet end thereof, which are arranged in a circular array with the center of the knob body (3) as the center, and the assembly blocks (31) are used to connect the assembly frame (5), the assembly frame (5) is provided with a surrounding wall (51) and a mounting space (52) defined in the surrounding wall (51), the mounting space (52) is used to arrange a filter plate (6) for pre-filtering impurities in the air, a filter plate limiting plate (7) located at the rear end of the filter plate (6), and a filter plate restraining plate (8) located at the front end of the filter plate (6), the filter plate limiting plate (7) is fixedly arranged on the surrounding wall (51), and the outer periphery of the filter plate (6) and the outer periphery of the filter plate restraining plate (8) are in close contact with the surrounding wall (51), and the close contact can generate a tight force to prevent the filter plate (6) and the filter plate restraining plate (8) from being separated from the mounting space (52).

2. The multiple-filtered automotive air conditioner accumulator drier according to claim 1, wherein: The rear end surface of the assembly block (31) is fixedly provided with an assembly frame limiting plate (31-a) for defining the final assembly position of the assembly frame (5) in the knob body (3).

3. The multi-filtered automotive air conditioner accumulator dryer of claim 2, wherein: The central position of the front end surface of the assembly block (31) is provided with a locked rod (9) with a locked notch (91), and the assembly frame (5) is provided with a lock arm (10) which can swing and has a locking notch (101), and the lock arm (10) is locked with the locked rod (9) through the combination of the locking notch (101) and the locked notch (91).

4. The multi-filtered automotive air conditioner accumulator dryer of claim 1, wherein: The filter plate limiting plate (7) is provided with a plurality of plug rod groups (71), which are arranged in a circular array with the center of the knob body (3) as the center, and each group of the plug rod groups (71) has at least two plug rods (71-a) symmetrically distributed on both sides, the plug rods (71-a) extend along the assembly direction of the filter plate (6) or the filter plate restraining plate (8), the filter plate (6) is provided with a transition insertion hole (61) matching the position and number of the plug rods (71-a), and the filter plate restraining plate (8) is provided with a locking insertion hole (81) matching the position and number of the plug rods (71-a), and the plug rods (71-a) are locked with the locking insertion hole (81) through the transition insertion hole (61).

5. The multi-filtered automotive air conditioner accumulator dryer of claim 4, wherein: The locking insertion hole (81) is divided into a sliding part (81-a) and a locking part (81-b) along the assembly direction, and the plug rod (71-a) is in clearance fit with the sliding part (81-a) and in close fit with the locking part (81-b).

6. The multi-filtered automotive air conditioner accumulator dryer of claim 5, wherein: The fitting clearance between the locking insertion hole (81) and the plug rod (71-a) gradually decreases along the assembly direction.

7. The multi-filtered automotive air conditioner accumulator dryer of claim 1, wherein: The filter plate restraining plate (8) is provided with two up-and-down symmetrically distributed pinch portions (82).

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