Air drying device and air suspension system

Abstract

The utility model relates to the field of vehicle technology, and provides an air drying device and an air suspension system. The air drying device of the utility model includes a first accommodating unit, a second accommodating unit and a water retaining unit; the water retaining unit is arranged in the first accommodating chamber and the second accommodating chamber, and is used to reduce or prevent the liquid water molecules deposited in the first accommodating chamber from flowing out through the first opening when the hygroscopicity of the moisture adsorbent in the air drying device reaches a certain level, and reduce or prevent the liquid water molecules deposited in the second accommodating chamber from flowing out through the second opening. The technical problem that the liquid water molecules deposited at the bottom of the first accommodating chamber will flow out of the first accommodating chamber through the first opening and the technical problem that the liquid water molecules deposited at the bottom of the second accommodating chamber will flow out of the second accommodating chamber through the second opening in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an air drying device and an air suspension system. Background Art

[0002] A compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. Taking the vehicle's air suspension system as an example, the air suspension system includes a compressor and an air-using device. The air outlet of the compressor can be connected to the air-using device (such as an air spring), and air is supplied to the air-using device through the compressor to change the height of the vehicle. In addition, since humid air can have an adverse effect on the air-using device, the air suspension system also includes an air drying device, which is usually connected between the air outlet of the compressor and the air-using device.

[0003] The air drying device of the prior art usually includes a drying tank and a partition, wherein the partition is arranged inside the drying tank and is used to separate the inside of the drying tank into a first accommodating chamber and a second accommodating chamber; the drying tank also has a first opening and a second opening; the first opening is connected to the first accommodating chamber, and the first opening is used to connect to the air outlet of the compressor; the second opening is connected to the second accommodating chamber, and is used to connect to the air inlet of the air-conditioning device; moisture adsorbents are provided in the first accommodating chamber and the second accommodating chamber, and the moisture adsorbents can absorb moisture. When the moisture adsorbents absorb moisture to a certain extent, a portion of liquid water molecules will be deposited at the bottom of the first accommodating chamber and the bottom of the second accommodating chamber.

[0004] However, in actual use, for example, in the process of transporting the air drying device, when the transport vehicle passes over a bumpy road, there will be a technical problem that the liquid water molecules deposited at the bottom of the first accommodating chamber flows out of the first accommodating chamber through the first opening, and the liquid water molecules deposited at the bottom of the second accommodating chamber flows out of the second accommodating chamber through the second opening. Utility Model Content

[0005] The utility model provides an air drying device and an air suspension system, which are used to solve the technical problem in the prior art that liquid water molecules deposited at the bottom of a first accommodating chamber will flow out of the first accommodating chamber through a first opening, and the technical problem that liquid water molecules deposited at the bottom of a second accommodating chamber will flow out of the second accommodating chamber through a second opening.

[0006] The utility model provides an air drying device, comprising a first accommodating unit, a second accommodating unit and a water retaining unit; the first accommodating unit has a first accommodating chamber, a first connecting hole and a first opening; the first connecting hole and the first opening can be connected to the first accommodating chamber; the first accommodating chamber is used to accommodate a moisture adsorbent; the first opening is used to connect to the air outlet of the compressor; the second accommodating unit is connected to the first accommodating unit, and has a second accommodating chamber, a second connecting hole and a second opening; the second connecting hole and the second opening can be connected to the second accommodating chamber; the second accommodating chamber is used to accommodate a moisture adsorbent; the second connecting hole is connected to the first connecting hole; the second opening is used to connect to the air inlet of an air-using device; the air-using device is used to accommodate air compressed by the compressor and dried by the moisture adsorbent; the water retaining unit is arranged in the first accommodating chamber and the second accommodating chamber, and is used to reduce or prevent the liquid water molecules deposited in the first accommodating chamber from flowing out through the first opening when the first opening and the second opening are facing the horizontal direction, and to reduce or prevent the liquid water molecules deposited in the second accommodating chamber from flowing out through the second opening.

[0007] According to an embodiment of the utility model, the water retaining unit includes a first water retaining mechanism and a second water retaining mechanism; the first water retaining mechanism is arranged on the cavity wall of the first accommodating cavity; the second water retaining mechanism is arranged on the cavity wall of the second accommodating cavity.

[0008] According to one embodiment of the present utility model, the first water retaining mechanism and the second water retaining mechanism respectively have an adsorbent passing hole.

[0009] According to an embodiment of the present invention, the adsorbent passage holes are respectively arranged at the center position of the first water retaining mechanism and the center position of the second water retaining mechanism.

[0010] According to one embodiment of the utility model, the first water retaining mechanism and the second water retaining mechanism are configured in a plate shape, and the outer peripheral wall of the first water retaining mechanism is connected to and sealed with the inner peripheral wall of the first accommodating cavity; the outer peripheral wall of the second water retaining mechanism is connected to and sealed with the inner peripheral wall of the second accommodating cavity.

[0011] According to one embodiment of the utility model, a first limiting portion is provided on the side wall of the first accommodating chamber, and the first limiting portion is located on the side of the first water retaining mechanism away from the first opening; the first water retaining mechanism abuts the first limiting portion; a second limiting portion is provided on the side wall of the second accommodating chamber, and the second limiting portion is located on the side of the second water retaining mechanism away from the second opening; the second water retaining mechanism abuts the second limiting portion.

[0012] According to an embodiment of the present utility model, a weight-reducing and heat-dissipating hole is provided at a connection between the first accommodating unit and the second accommodating unit.

[0013] According to one embodiment of the utility model, it also includes a first limiting unit, which is arranged in the first accommodating cavity and is located on the side of the first water retaining mechanism facing the first opening. The outer peripheral wall of the first limiting unit is connected to the inner peripheral wall of the first accommodating cavity. The first limiting unit has a first air through hole. The first limiting unit is used to limit the movement of the moisture adsorbent through the first opening to the outside of the first accommodating cavity; the first limiting unit abuts against the surface of the moisture adsorbent when the moisture adsorbent is placed in the first accommodating cavity, so that the moisture adsorbent is in a compacted state.

[0014] According to one embodiment of the utility model, it also includes a second limiting unit, which is arranged in the second accommodating cavity and is located on the side of the second water retaining mechanism facing the second opening. The outer peripheral wall of the second limiting unit is connected to the inner peripheral wall of the second accommodating cavity. The second limiting unit has a second air through hole. The second limiting unit is used to limit the movement of the moisture adsorbent through the second opening to the outside of the second accommodating cavity; the second limiting unit abuts against the surface of the moisture adsorbent when the moisture adsorbent is placed in the second accommodating cavity, so that the moisture adsorbent is in a compacted state.

[0015] The utility model also provides an air suspension system, comprising: an air drying device as described in the above embodiment.

[0016] The features and advantages of the air drying device and air suspension system of the utility model are:

[0017] In actual use, the water retaining unit can reduce or prevent the liquid water molecules deposited at the bottom of the first accommodating chamber from flowing out through the first opening, and can reduce or prevent the liquid water molecules deposited at the bottom of the second accommodating chamber from flowing out through the second opening. That is, the water retaining unit can play a role in blocking water. Even when the transport vehicle passes through a bumpy road, the liquid water molecules deposited at the bottom of the first accommodating chamber will not flow out of the first accommodating chamber through the first opening, and the liquid water molecules deposited at the bottom of the second accommodating chamber will not flow out of the second accommodating chamber through the second opening. This solves the technical problem in the prior art that the liquid water molecules deposited at the bottom of the first accommodating chamber will flow out of the first accommodating chamber through the first opening and the technical problem that the liquid water molecules deposited at the bottom of the second accommodating chamber will flow out of the second accommodating chamber through the second opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a stereoscopic diagram of the air drying device of the utility model.

[0020] Figure 2 It is a front view of the air drying device of the utility model.

[0021] Figure 3 It is a top view of the air drying device of the utility model.

[0022] Figure 4 yes Figure 3 Cross-sectional view along AA direction.

[0023] Reference numerals:

[0024] 100, first accommodating unit; 110, first accommodating cavity; 111, first limiting portion; 120, first connecting hole; 130, first opening; 200, second accommodating unit; 210, second accommodating cavity; 211, second limiting portion; 220, second connecting hole; 230, second opening; 300, water retaining unit; 310, first water retaining mechanism; 320, second water retaining mechanism; 301, adsorbent passing hole; 400, weight reduction and heat dissipation hole; 500, first limiting unit; 600, second limiting unit. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Figures 1 to 4The air drying device and air suspension system provided by the utility model are shown. As can be seen from the figure, the air drying device of the utility model includes a first accommodating unit 100, a second accommodating unit 200 and a water retaining unit 300; the first accommodating unit 100 has a first accommodating chamber 110, a first connecting hole 120 and a first opening 130; the first connecting hole 120 and the first opening 130 can communicate with the first accommodating chamber 110; the first accommodating chamber 110 is used to accommodate a moisture adsorbent; the first opening 130 is used to communicate with the air outlet of the compressor; the second accommodating unit 200 is connected to the first accommodating unit 100, and has a second accommodating chamber 210, a second connecting hole 220 and a second opening 230; the second connecting hole 2 20 and the second opening 230 can be connected to the second accommodating chamber 210; the second accommodating chamber 210 is used to accommodate the moisture adsorbent; the second connecting hole 220 is connected to the first connecting hole 120; the second opening 230 is used to connect to the air inlet of the air-using device; the air-using device is used to accommodate air compressed by the compressor and dried by the moisture adsorbent; the water retaining unit 300 is arranged in the first accommodating chamber 110 and the second accommodating chamber 210, and is used to reduce or prevent the liquid water molecules deposited in the first accommodating chamber 110 from flowing out through the first opening 130 when the first opening 130 and the second opening 230 are facing horizontal directions, and to reduce or prevent the liquid water molecules deposited in the second accommodating chamber 210 from flowing out through the second opening 230.

[0031] In specific implementation, in actual use, the water retaining unit 300 can reduce or prevent the liquid water molecules deposited at the bottom of the first accommodating chamber 110 from flowing out through the first opening 130, and can reduce or prevent the liquid water molecules deposited at the bottom of the second accommodating chamber 210 from flowing out through the second opening 230, that is, the water retaining unit 300 can play a role in blocking water, even when the transport vehicle passes through a bumpy road, the liquid water molecules deposited at the bottom of the first accommodating chamber 110 will not flow out of the first accommodating chamber 110 through the first opening 130, and the liquid water molecules deposited at the bottom of the second accommodating chamber 210 will not flow out of the second accommodating chamber 210 through the second opening 230, thereby solving the technical problem in the prior art that the liquid water molecules deposited at the bottom of the first accommodating chamber 110 will flow out of the first accommodating chamber 110 through the first opening 130 and the technical problem that the liquid water molecules deposited at the bottom of the second accommodating chamber 210 will flow out of the second accommodating chamber 210 through the second opening 230.

[0032] According to an embodiment of the present invention, the water retaining unit 300 includes a first water retaining mechanism 310 and a second water retaining mechanism 320 ; the first water retaining mechanism 310 is disposed on the cavity wall of the first accommodating cavity 110 ; the second water retaining mechanism 320 is disposed on the cavity wall of the second accommodating cavity 210 .

[0033] According to an embodiment of the present invention, the first water retaining mechanism 310 and the second water retaining mechanism 320 respectively have an adsorbent passing hole 301 .

[0034] In a specific implementation, the above-mentioned structural arrangement enables the moisture adsorbent to be loaded into the first accommodating chamber 110 and the second accommodating chamber 210 through the adsorbent through hole 301 .

[0035] In this embodiment, the adsorbent passage hole 301 can be, for example, circular or square, and is respectively arranged at the center position of the first water retaining mechanism 310 and the center position of the second water retaining mechanism 320, that is, an adsorbent passage hole 301 is respectively arranged at the center position of the first water retaining mechanism 310 and the center position of the second water retaining mechanism 320.

[0036] According to one embodiment of the utility model, the first water retaining mechanism 310 and the second water retaining mechanism 320 are configured to be plate-shaped, and the outer peripheral wall of the first water retaining mechanism 310 is connected to and sealed with the inner peripheral wall of the first accommodating cavity 110; the outer peripheral wall of the second water retaining mechanism 320 is connected to and sealed with the inner peripheral wall of the second accommodating cavity 210.

[0037] In a specific implementation, by configuring the first water retaining mechanism 310 and the second water retaining mechanism 320 to be plate-shaped, space occupation can be reduced, thereby providing more space for loading the moisture adsorbent.

[0038] According to one embodiment of the utility model, a first limiting portion 111 is provided on the side wall of the first accommodating cavity 110, and the first limiting portion 111 is located on the side of the first water retaining mechanism 310 away from the first opening 130; the first water retaining mechanism 310 abuts against the first limiting portion 111; a second limiting portion 211 is provided on the side wall of the second accommodating cavity 210, and the second limiting portion 211 is located on the side of the second water retaining mechanism 320 away from the second opening 230; the second water retaining mechanism 320 abuts against the first limiting portion 211.

[0039] According to an embodiment of the present invention, a weight-reducing heat dissipation hole 400 is provided at a connection point between the first accommodating unit 100 and the second accommodating unit 200 .

[0040] In specific implementation, the above-mentioned structural setting can increase the contact area between the air and the wall of the heat dissipation and weight reduction hole, and better dissipate heat to the first accommodating unit 100 and the second accommodating unit 200, so as to enhance the heat dissipation of the air drying device. Since the heat dissipation performance of the air drying device is enhanced, compared with the prior art, the heat of the moisture adsorbent in the air drying device can be quickly released, and the temperature of the moisture adsorbent is relatively low, thereby ensuring the adsorption performance of the moisture adsorbent; in addition, the setting of the heat dissipation and weight reduction holes can reduce the use of materials in the air drying device, which can not only reduce production costs, but also reduce the weight of the air drying device, making it convenient to transport the air drying device.

[0041] In this embodiment, the heat dissipation and weight reduction holes are extended along the height direction of the air drying device to form a structure with two connection points between the first accommodating unit 100 and the second accommodating unit 200, rather than a sheet-like structure, that is, the connection point is not sheet-like.

[0042] According to one embodiment of the utility model, it also includes a first limiting unit 500, which is arranged in the first accommodating cavity 110 and is located on the side of the first water retaining mechanism 310 facing the first opening 130. The outer peripheral wall of the first limiting unit 500 is connected to the inner peripheral wall of the first accommodating cavity 110. The first limiting unit 500 has a first air through hole. The first limiting unit 500 is used to limit the movement of the moisture adsorbent through the first opening 130 to the outside of the first accommodating cavity 110; the first limiting unit 500 abuts against the surface of the moisture adsorbent when the moisture adsorbent is placed in the first accommodating cavity 110, so that the moisture adsorbent is in a compacted state.

[0043] In specific implementation, if the above-mentioned structural setting is not adopted, the moisture adsorbent will move under the action of air pressure, causing mutual friction between the moisture adsorbents, and the mutual friction will cause the moisture adsorbent to wear. For example, the moisture adsorbent will change from large particles to small particles, thereby affecting the drying effect; through the above-mentioned structural setting, the moisture adsorbent can be restricted (equivalent to locking) to prevent the moisture adsorbent from moving in the first accommodating cavity 110, thereby preventing mutual friction between the moisture adsorbents, thereby ensuring the drying effect of the air drying device of the utility model.

[0044] According to one embodiment of the utility model, it also includes a second limiting unit 600, which is arranged in the second accommodating chamber 210 and is located on the side of the second water retaining mechanism 320 facing the second opening 230. The outer peripheral wall of the second limiting unit 600 is connected to the inner peripheral wall of the second accommodating chamber 210. The second limiting unit 600 has a second air through hole. The second limiting unit 600 is used to limit the movement of the moisture adsorbent through the second opening 230 to the outside of the second accommodating chamber 210; the second limiting unit 600 abuts against the surface of the moisture adsorbent when the moisture adsorbent is placed in the second accommodating chamber 210, so that the moisture adsorbent is in a compacted state.

[0045] In specific implementation, the above-mentioned structural setting can prevent the moisture adsorbent in the second accommodating chamber 210 from entering the gas-using device in the positive direction from the second accommodating chamber 210, wherein the positive direction is along the direction from the compressor to the gas-using device, and the positive direction generally corresponds to the usage scenario where the vehicle height needs to be increased.

[0046] The utility model also provides an air suspension system, including an air drying device of the embodiment. The specific structure, working principle and beneficial effects of the air drying device are the same as those of the above embodiment, and will not be repeated here.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An air drying device, characterized in that: It comprises a first accommodating unit (100), a second accommodating unit (200) and a water retaining unit (300); The first accommodating unit (100) comprises a first accommodating chamber (110), a first communicating hole (120) and a first opening (130); the first communicating hole (120) and the first opening (130) can be connected to the first accommodating chamber (110); the first accommodating chamber (110) is used to accommodate a moisture adsorbent; the first opening (130) is used to be connected to an air outlet of a compressor; The second accommodating unit (200) is connected to the first accommodating unit (100), and has a second accommodating chamber (210), a second communicating hole (220) and a second opening (230); the second communicating hole (220) and the second opening (230) can be connected to the second accommodating chamber (210); the second accommodating chamber (210) is used to accommodate the moisture adsorbent; the second communicating hole (220) is connected to the first communicating hole (120); the second opening (230) is used to connect to an air inlet of a general air-using device; the air-using device is used to accommodate air compressed by the compressor and dried by the moisture adsorbent; The water retaining unit (300) is arranged in the first accommodating chamber (110) and the second accommodating chamber (210), and is used to reduce or prevent liquid water molecules deposited in the first accommodating chamber (110) from flowing out through the first opening (130) when the first opening (130) and the second opening (230) are facing a horizontal direction, and to reduce or prevent liquid water molecules deposited in the second accommodating chamber (210) from flowing out through the second opening (230).

2. The air drying device according to claim 1, characterized in that: The water retaining unit (300) comprises a first water retaining mechanism (310) and a second water retaining mechanism (320); The first water retaining mechanism (310) is arranged on the cavity wall of the first accommodating cavity (110); The second water retaining mechanism (320) is arranged on the cavity wall of the second accommodating cavity (210).

3. The air drying device according to claim 2, characterized in that: The first water retaining mechanism (310) and the second water retaining mechanism (320) respectively have an adsorbent passing hole (301).

4. The air drying device according to claim 3, characterized in that: The adsorbent passage holes (301) are respectively arranged at the center position of the first water retaining mechanism (310) and the center position of the second water retaining mechanism (320).

5. The air drying device according to claim 3, characterized in that: The first water retaining mechanism (310) and the second water retaining mechanism (320) are configured in a plate shape, and the outer peripheral wall of the first water retaining mechanism (310) is connected to the inner peripheral wall of the first accommodating cavity (110) and is sealed and matched; The outer peripheral wall of the second water retaining mechanism (320) is connected to the inner peripheral wall of the second accommodating cavity (210) and is sealed.

6. The air drying device according to claim 2, characterized in that: A first limiting portion (111) is provided on the side wall of the first accommodating cavity (110), and the first limiting portion (111) is located on a side of the first water retaining mechanism (310) away from the first opening (130); The first water retaining mechanism (310) abuts against the first limiting portion (111); A second limiting portion (211) is provided on the side wall of the second accommodating cavity (210), and the second limiting portion (211) is located on a side of the second water retaining mechanism (320) away from the second opening (230); The second water retaining mechanism (320) abuts against the second limiting portion (211).

7. The air drying device according to claim 2, characterized in that: A weight-reducing heat dissipation hole (400) is provided at the connection point between the first accommodating unit (100) and the second accommodating unit (200).

8. The air drying device according to any one of claims 2 to 7, characterized in that: The invention also comprises a first limiting unit (500), which is arranged in the first accommodating cavity (110) and is located on the side of the first water retaining mechanism (310) facing the first opening (130); the outer peripheral wall of the first limiting unit (500) is connected to the inner peripheral wall of the first accommodating cavity (110); the first limiting unit (500) has a first air through hole; and the first limiting unit (500) is used to limit the moisture adsorbent from moving out of the first accommodating cavity (110) through the first opening (130); When the moisture adsorbent is placed in the first accommodating cavity (110), the first limiting unit (500) abuts against the surface of the moisture adsorbent, so that the moisture adsorbent is in a compacted state.

9. The air drying device according to any one of claims 2 to 7, characterized in that: The invention also comprises a second limiting unit (600), which is arranged in the second accommodating cavity (210) and is located on the side of the second water retaining mechanism (320) facing the second opening (230); the outer peripheral wall of the second limiting unit (600) is connected to the inner peripheral wall of the second accommodating cavity (210); the second limiting unit (600) has a second air through hole; and the second limiting unit (600) is used to limit the moisture adsorbent from moving out of the second accommodating cavity (210) through the second opening (230); When the moisture adsorbent is placed in the second accommodating cavity (210), the second limiting unit (600) abuts against the surface of the moisture adsorbent, so that the moisture adsorbent is in a compacted state.

10. An air suspension system, characterized in that: include: An air drying device as claimed in any one of claims 1 to 9.

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