CN216048524U

CN216048524U - Low-resistance high-efficiency drying filter

Info

Publication number: CN216048524U
Application number: CN202122190803.6U
Authority: CN
Inventors: 蒋松林; 陈绍辉; 李沛; 陈超; 郭卫康; 瞿康阳
Original assignee: Zhejiang King Co ltd
Current assignee: Zhejiang King Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-15
Anticipated expiration: 2031-09-10

Abstract

The application belongs to the technical field of refrigeration machinery, and specifically relates to a low-resistance high-efficiency drying filter matched with a large refrigeration system, in particular to an evaporative condensing unit for use. The utility model provides a parallelly connected a plurality of dry filter core and the filter core of placing in the barrel body of drier-filter, drier-filter make full use of dry filter core's drying characteristic and the low resistance characteristic of filter core to can guarantee dry, filterable function demand, can be at the minimum with resistance control again simultaneously, avoid influencing unit performance and operational reliability because of the too big refrigerant flash distillation that arouses of resistance, ensure the high-efficient operation of system.

Description

Low-resistance high-efficiency drying filter

Technical Field

The application belongs to the technical field of refrigeration machinery, and particularly relates to a low-resistance high-efficiency drying filter matched with a large refrigeration system, in particular to an evaporative condensing unit.

Background

The dry filter is used as an important part accessory of the air-conditioning refrigeration system, is usually arranged in a liquid pipeline of the refrigeration system, plays a role in filtering impurities and absorbing moisture for a liquid refrigerant before throttling, and provides effective guarantee for stable operation of the refrigeration system and effective regulation of an expansion valve, so that the service life of a compressor is prolonged, and the refrigeration effect is effectively guaranteed.

In a large-scale screw and centrifugal main machine refrigerant circulating system, the refrigerant circulating flow is large, in order to prevent the liquid refrigerant from flashing and affecting the system stability caused by overlarge pressure drop when the refrigerant flows through a drying filter, a plurality of drying filters are generally required to be used in parallel or the drying filters and the filters are used in parallel, and the two modes have the defects of high cost, complex pipeline, difficult layout, inconvenient maintenance and the like.

Particularly, in a refrigeration system adopting the evaporative condenser, the condensation temperature of the unit is low, and the heat exchange pipe diameter of the evaporative condenser is relatively thick so as to facilitate liquid drainage, so that the supercooling degree of high-pressure liquid at the outlet of the evaporative condenser is approximately zero. And the high-pressure saturated liquid from the liquid reservoir inevitably generates local resistance and on-way resistance when passing through the drying filter, the stop valve, the electromagnetic valve and the high-pressure liquid pipe, so that the saturated liquid is easy to generate a flash evaporation phenomenon, and part of the saturated liquid is changed into saturated gas. Because the volume of the saturated gas is about 40 times of that of the saturated liquid, once a gas refrigerant carried in the high-pressure liquid enters the throttling device, the flow of the refrigerant is seriously influenced, so that the evaporation temperature of a unit is reduced, and the refrigerating capacity and the refrigerating energy efficiency are seriously attenuated; meanwhile, the flash evaporation gas can also cause unstable flow of the liquid refrigerant supplied to the evaporator from the throttling device, even generate the problem of intermittent liquid supply, generate greater risks for the performance of the unit and the running reliability of the compressor, cause the stability of the unit to be poorer, and therefore, higher requirements are provided for the resistance of the drying filter.

Prior art ZL202021126881.9, name: the utility model provides a drying filter, sets up components such as filter core, compression spring, porous baffle, drier and microgroove net baffle in its filter that publishes, sets up through the subassembly series connection with drying action and filtering action to play multiple filtering action, but its inevitable can produce local resistance, thereby arouse saturated liquid flash distillation easily, lead to unit stability relatively poor.

Disclosure of Invention

Aiming at the problems, the technical problem to be solved and the task to be provided by the application are to overcome the problems that the performance and the operation reliability of a unit are influenced because the flash evaporation is easily caused by resistance when the existing drying filter passes through the drying filter due to the low supercooling degree of high-pressure liquid at the outlet of a condenser in a large-scale refrigerating system, particularly a refrigerating system adopting an evaporative condenser, and to provide the drying filter with small resistance and simple structure.

The application provides a high-efficient drier-filter of low resistance, including cylindrical stack shell, the end cover is established at the stack shell both ends in order to seal the stack shell, wherein has seted up the refrigerant export on the end cover, and the refrigerant import is seted up to the stack shell, and the stack shell divides into two sections along length direction at least, establish filter core and dry filter core in the section of stack shell, the external diameter of filter core and dry filter core is less than the internal diameter of stack shell, and it is fixed with the fixed frame subassembly of filter core in locating the stack shell to filter core, and the clearance of filter core and dry filter core and stack shell inner wall is the cavity runner.

In addition, according to the above embodiment, the following additional technical features may be provided:

specifically, the barrel body is divided into two to six sections along the length direction, the total number of the drying filter cores and the filter cores is two to six, and the proportion of the drying filter cores and the filter cores is randomly combined.

Specifically, the cylinder body is divided into three sections along the length direction, the total number of the drying filter cores and the filter cores is three, the drying filter cores are arranged in the cylinder body section close to the refrigerant outlet, the filter cores are arranged in the cylinder body section far away from the refrigerant outlet, and the number of the drying filter cores is two.

Specifically, a cylinder body far away from the refrigerant outlet is provided with a refrigerant inlet.

Specifically, the filter element consists of an end cover, a framework and a filter material, the filter material is a stainless steel metal net, a multi-layer stainless steel sintering net, a non-woven fabric, glass fiber, polypropylene fiber or polyester fiber, the structural form of the filter element is a flat net type or a pleated type, and the filtering precision of the filter element can be set according to actual requirements.

Specifically, the core body of the dry filter core comprises 100% of molecular sieve.

Specifically, a detachable structure or a non-detachable structure can be adopted between the cylinder body and the end cover.

Specifically, the end cover provided with the refrigerant outlet is a first end cover, an undetachable structure is adopted between the first end cover and the cylinder body, the other end cover far away from the refrigerant outlet is a second end cover, a detachable structure is adopted between the second end cover and the cylinder body, and an end cover sealing gasket is arranged between the second end cover and the cylinder body.

Specifically, a valve is arranged on the second end cover.

Specifically, the fixed frame subassembly of filter core includes preceding fixed plate and the after-fixing board and a plurality of middle fixed plate that concatenate by fixed cluster pole, and fixed cluster pole runs through protrudingly by the center of after-fixing board, and the protruding part is fastening screw, and fastening screw and an end cover spiro union are fixed, establish a pressure spring between after-fixing board and the end cover that closes on, dry filter core and filter core are equipped with sealed the pad respectively with the fixed inter-plate of the fixed frame subassembly of filter core.

The utility model provides a high-efficient drier-filter of low resistance through in the drying cartridge filter, places dry filter core and filter core simultaneously according to the project characteristic, make full use of dry drying action of filtering the core and the low resistance characteristic of filtering the core, can guarantee dry, filterable function demand, can be at the minimum with resistance control again simultaneously, avoid influencing unit performance and operational reliability because of the too big refrigerant flash distillation that arouses of resistance, ensure the high-efficient operation of system.

Drawings

FIG. 1 is a schematic diagram of a low resistance high efficiency filter drier according to the present application.

Fig. 2 is a schematic view of a low resistance high efficiency filter cartridge mounting frame assembly of the present application.

Wherein, 1-a cylinder body; 2-a second end cap; 3-end cap sealing gasket; 4-a refrigerant inlet; 5-a refrigerant outlet; 6-a cartridge retaining frame assembly; 61-front fixing plate; 62-fixing the string rod; 63-a first intermediate fixing plate; 64-rear fixing plate; 65-a hold-down spring; 66-fastening screw; 67-a second intermediate fixed plate; 7-a sealing gasket; 8-a filter element; 9-drying the filter element; 10-a valve; 11-a first end cap; 12-cavity flow channel.

Detailed Description

The embodiments described below with reference to the drawings are exemplary and are intended to be used for explaining the inventive concept. In the description, it will be understood that the terms "length," "center," "width," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings, which are used for simplicity of description and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated.

In the description, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "plurality" means two or more, e.g., two, three, etc., unless specifically limited otherwise.

Unless expressly stated or limited otherwise, the terms "connected," "communicating," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanical connection and electrical connection; may be directly connected, or indirectly connected through an intermediate; either as communication within the two elements or as an interactive relationship of the two elements. Specific meanings of the above terms in the examples can be understood by those of ordinary skill in the art according to specific situations.

In the description, it is to be understood that the description of the terms "some embodiments" or "specific embodiments," etc., is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1, the low-resistance high-efficiency drying filter of the present application comprises a cylindrical barrel 1, and a first end cap 11 and a second end cap 2 are arranged at two ends of the barrel 1. The cylinder body 1 is divided into at least two sections from the second end cover 2 to the first end cover 11, and a filter element 8 and a drying filter element 9 are arranged in the sections. The outer diameters of the filter element 8 and the dry filter element 9 are smaller than the inner diameter of the cylinder body 1, the filter element 8 and the dry filter element 9 are fixed by a filter element fixing frame component 6 arranged in the cylinder body 1, and a gap between the filter element 8 and the dry filter element 9 and the inner wall of the cylinder body 1 is a cavity flow passage 12 for refrigerant to flow. The first end cover 11 is provided with a refrigerant outlet 5, and a cylinder body far away from the refrigerant outlet 5 is provided with a refrigerant inlet 4.

In some embodiments of the present application, filter element 8 and dry filter element 9 are of a standardized modular design. The two ends of the filter element 8 are respectively provided with an upper cover and a lower cover, a supporting framework is arranged between the upper cover and the lower cover, the framework supports a filter material, and the filter material can be a stainless steel metal net, a multi-layer stainless steel sintered net, non-woven fabrics, glass fibers, polypropylene fibers, polyester fibers and the like and is used for filtering oil and moisture in compressed gas. The structural form of the filter element 8 can be flat net type, pleated type and other structures; the filtering precision of the filter element 8 can be set according to actual requirements. The two ends of the drying filter element 9 are respectively provided with an upper cover and a lower cover, a support body is arranged between the upper cover and the lower cover, the support body fixes the core body of the drying filter element 9, and the core body can be a 100% molecular sieve or a molecular sieve and active aluminum which are formed according to a certain proportion.

In some embodiments of the present application, the barrel 1 is divided into two to six sections from the second end cover 2 to the first end cover 11, correspondingly, the total number of the filter elements 8 and the dry filter elements 9 is two to six, and the ratio of the number of the filter elements 8 to the number of the dry filter elements 9 can be set as required, and any combination can be adopted. For example, when the total number of the filter elements 8 and the dry filter elements 9 is two, one filter element 8 and one dry filter element 9 are combined. When the total number of the filter elements 8 and the dry filter elements 9 is three, two filter elements 8 and one dry filter element 9 may be combined, or one filter element 8 and two dry filter elements 9 may be combined. When the total number of the filter elements 8 and the dry filter elements 9 is four, one filter element 8 and three dry filter elements 9 may be combined, two filter elements 8 and two dry filter elements 9 may be combined, and three filter elements 8 and one dry filter element 9 may be combined.

In some embodiments of the present application, a section near the second end cap 2 is provided with a filter element 8, and the remaining section may be provided with a dry filter element 9 and/or a filter element 8.

In some embodiments of the present application, cartridge mounting frame assembly 6 includes front and

rear mounting plates

61, 64 and a plurality of intermediate mounting plates connected in series by a mounting cross-member 62. The fixed string rod 62 penetrates through the center of the rear fixing plate 64 to protrude, the protruding part is a fastening screw 66, and the fastening screw 66 is fixed with the second end cap 2 in a threaded manner.

According to the total quantity of the filter element 8 and the dry filter element 9, a plurality of intermediate fixing plates are arranged between the front fixing plate 61 and the rear fixing plate 64. As shown in fig. 2, in some embodiments, the direction from the second end cap 2 to the first end cap 11 is divided into three sections, and one filter element 8 and two dry filter elements 9 are sequentially disposed in the sections, so that a first intermediate fixing plate 63 and a second intermediate fixing plate 65 are disposed between the front fixing plate 61 and the rear fixing plate 64. When the filter element 8 and the dry filter element 9 are in other numbers, the number of the middle fixing plates of the filter element fixing frame component 6 is correspondingly adjusted.

A compression spring 65 is arranged between the rear fixing plate 64 and the second end cap 2. The dry filter element 9 and the filter element 8 are respectively provided with a sealing gasket 7 between the filter element fixing frame component 6 and the fixing plate.

In some embodiments of the present application, the first end cap 11, the second end cap 2 and the barrel 1 may be of a non-detachable structure or a detachable structure. When the structure is detachable, an end cover sealing gasket 3 is arranged between the end cover and the cylinder body 1. The second end cap 2 may have a valve 10 on an outer surface thereof.

In one embodiment of the present application, the low-resistance and high-efficiency dry filter comprises a cylindrical barrel 1, wherein a first end cover 11 and a second end cover 2 are arranged at two ends of the barrel 1. Be non-detachable structure between first end cover 11 and the stack shell 1, be detachable structure between second end cover 2 and the stack shell 1, be equipped with end cover sealing gasket 3 between second end cover 2 and the stack shell 1, second end cover 2 is equipped with valve 10 for the inside pressure of control barrel 1.

The drying filter is divided into three sections from the second end cover 2 to the first end cover 11, a filter element 8 is arranged in the section close to the second end cover 2, and drying filter elements 9 are respectively arranged in the other two sections close to the first end cover 11. The outer diameters of the filter element 8 and the dry filter element 9 are smaller than the inner diameter of the cylinder body 1, a gap between the filter element 8 and the dry filter element 9 and the cylinder body 1 is a cavity flow passage 12, and the refrigerant inlet 4 is arranged on the cylinder body 1 of the filter element 8 section.

The filter element 8 and the dry filter element 9 are fixed in the barrel body 1 by the fixed frame assembly 6 of filter element, the fixed frame assembly 6 of filter element includes preceding fixed plate 61 and the after-fixing board 64 that concatenates by fixed boom 62 to and be located the first middle fixed plate 63 and the second middle fixed plate 67 between preceding fixed plate 61 and after-fixing board 64. The fixed string rod 62 penetrates through the center of the rear fixing plate 64 to protrude, the protruding part is a fastening screw 66, and the fastening screw 66 is fixed with the second end cap 2 in a threaded manner. A compression spring 65 is arranged between the rear fixing plate 64 and the second end cap 2. Sealing gaskets 7 are arranged between the dry filter element 9 and the filter element 8 and the fixing plates of the filter element fixing frame component 6.

The refrigerant of the present application has the following specific flow: refrigerant enters a cavity flow channel 12 in the cylinder body 1 through a refrigerant inlet 4, part of the refrigerant enters the inner cavity of the core body after passing through the drying filter core 9 and being absorbed with moisture and filtered with impurities, and the other part of the refrigerant enters the inner cavity of the core body after passing through the filter core 8 and being filtered with impurities; the refrigerant flowing through the drying filter element 9 and the refrigerant flowing through the filter element 8 are mixed and then flow out through the refrigerant outlet 5, so that the drying and filtering of the refrigerant are realized.

The utility model provides a drier-filter, dry filter element 9 adopts parallel design with filter element 8, because filter element 8's resistance is far less than dry filter element 9's resistance, consequently effectual reduced the refrigerant arouse the risk of flash distillation because of the filter resistance when flowing through drier-filter, promoted the stability and the reliability of unit operation.

While embodiments of the present application have been illustrated and described above, it should be understood that they have been presented by way of example only, and not limitation. Without departing from the spirit and scope of this application, there are also various changes and modifications that fall within the scope of the claimed application.

Claims

1. The utility model provides a high-efficient drier-filter of low resistance, includes cylindrical stack shell, the end cover is established at the stack shell both ends in order to seal the stack shell, has seted up the refrigerant export on one of them end cover, and the refrigerant import is seted up to the stack shell, and the stack shell divides into two sections, its characterized in that at least along length direction: the section of the barrel body is internally provided with a filter element and a dry filter element, the outer diameters of the filter element and the dry filter element are smaller than the inner diameter of the barrel body, the filter element and the dry filter element are fixed by a filter element fixing frame component arranged in the barrel body, and a gap between the filter element and the inner wall of the barrel body is a cavity flow channel.

2. The low resistance high efficiency filter drier of claim 1, wherein: the barrel body is divided into two to six sections along the length direction, the total quantity of the drying filter cores and the filter cores is two to six, and the drying filter cores and the filter cores are combined randomly.

3. A low resistance high efficiency filter dryer according to claim 2 wherein: the cylinder body is divided into three sections along the length direction, the total number of the drying filter cores and the filter cores is three, the drying filter cores are arranged in the cylinder body section close to the refrigerant outlet, the filter cores are arranged in the cylinder body section far away from the refrigerant outlet, and the number of the drying filter cores is two.

4. The low resistance high efficiency filter drier of claim 1, wherein: the barrel body far away from the refrigerant outlet is provided with a refrigerant inlet.

5. The low resistance high efficiency filter drier of claim 1, wherein: the filter element is composed of an end cover, a framework and a filter material, the filter material is a stainless steel metal net, a plurality of layers of stainless steel sintering nets, non-woven fabrics, glass fibers, polypropylene fibers or polyester fibers, the structural form of the filter element is a flat net type or a pleated type, and the filtering precision of the filter element can be set according to actual requirements.

6. The low resistance high efficiency filter drier of claim 1, wherein: the core body of the dry filter core comprises 100% of molecular sieve.

7. The low resistance high efficiency filter drier of claim 1, wherein: the cylinder body and the end cover can adopt a detachable structure or a non-detachable structure.

8. The low resistance high efficiency filter drier of claim 7, wherein: the end cover provided with the refrigerant outlet is a first end cover, an undetachable structure is adopted between the first end cover and the cylinder body, the other end cover far away from the refrigerant outlet is a second end cover, a detachable structure is adopted between the second end cover and the cylinder body, and an end cover sealing gasket is arranged between the second end cover and the cylinder body.

9. The low resistance, high efficiency filter drier according to claim 8, wherein: and a valve is arranged on the second end cover.

10. The low resistance high efficiency filter drier of claim 1, wherein: the fixed frame subassembly of filter core includes preceding fixed plate and the after-fixing board and a plurality of middle fixed plate that concatenate by fixed boom, and fixed boom runs through protrudingly by the center of after-fixing board, and the protruding part is fastening screw, and fastening screw is fixed with a cover spiro union, establish a pressure spring between after-fixing board and the end cover that closes on, dry filter core and filter core are equipped with sealed the pad respectively with the fixed inter-plate of the fixed frame subassembly of filter core.