WO2013127291A1 - 一种贮液器、贮液器制造方法及空调制冷系统 - Google Patents

一种贮液器、贮液器制造方法及空调制冷系统 Download PDF

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Publication number
WO2013127291A1
WO2013127291A1 PCT/CN2013/071323 CN2013071323W WO2013127291A1 WO 2013127291 A1 WO2013127291 A1 WO 2013127291A1 CN 2013071323 W CN2013071323 W CN 2013071323W WO 2013127291 A1 WO2013127291 A1 WO 2013127291A1
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WO
WIPO (PCT)
Prior art keywords
filter
wall
filter cartridge
refrigerant
mating
Prior art date
Application number
PCT/CN2013/071323
Other languages
English (en)
French (fr)
Inventor
汪立新
王正伟
Original Assignee
浙江三花汽车零部件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江三花汽车零部件有限公司 filed Critical 浙江三花汽车零部件有限公司
Priority to EP13755273.3A priority Critical patent/EP2835603B1/en
Priority to CN201380011275.9A priority patent/CN104254746B/zh
Priority to US14/380,707 priority patent/US9759463B2/en
Publication of WO2013127291A1 publication Critical patent/WO2013127291A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0415—Details of supporting structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements
    • B01D2201/347—Radial sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/001—Making filter elements not provided for elsewhere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/14—Downward filtration, the container having distribution or collection headers or pervious conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/005—Making filter elements not provided for elsewhere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/02—Cartridge filters of the throw-away type with cartridges made from a mass of loose granular or fibrous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/14—Cartridge filters of the throw-away type having more than one filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/0093—Making filtering elements not provided for elsewhere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/02—Combinations of filters of different kinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • F25B2400/162—Receivers characterised by the plug or stop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49394—Accumulator making

Definitions

  • the invention relates to a Chinese patent office submitted on February 27, 2012, the application number is 201210046481.0, and the invention name is "air conditioning refrigeration system and its liquid storage device". Priority of the patent application, the entire contents of which is incorporated herein by reference.
  • the invention relates to the technical field of refrigeration systems, and in particular to a liquid storage device with low flow resistance.
  • the invention also relates to an air conditioning refrigeration system having the above described liquid reservoir. Background technique
  • the reservoir is an important accessory in the refrigeration system. It functions to filter impurities in the refrigerant, absorb moisture from the refrigerant, and store a certain amount of refrigerant. Therefore, it is widely used in refrigeration systems such as automobile air conditioners. At present, there are many types of liquid storage devices in automobile air conditioners, and the application range of the upper and lower body type liquid storage devices is relatively wide.
  • Figure 1 is a schematic view of the structure of a related reservoir.
  • the liquid reservoir has a slender shape and is formed by butting and welding the upper body 1 and the lower body 2.
  • the upper body 1 is internally provided with a drying bag 11 having a molecular sieve 111 therein.
  • the lower end of the lower body 2 is provided with a refrigerant inlet 21 and a refrigerant outlet 27, and the upper end of the refrigerant inlet 21 and the refrigerant outlet 27 are provided with an aluminum mesh screen 23.
  • the bottom surface of the baffle 23 has a plurality of small holes on which a concave first metal filter 22 is spot-welded, the first metal filter 22 is opposite to the refrigerant inlet 21, and the baffle 23 and the refrigerant outlet 27 are sequentially disposed.
  • Non-woven filter 25 and second metal filter 26 The upper end of the above-mentioned baffle 23 is fixed to the inside of the upper body 1 by a bump 24 provided on the inner wall of the upper body 1, and the bump 24 is formed by striking the outside of the lower body 2.
  • the refrigerant flows in from the refrigerant inlet 21 and is filtered through the first metal filter 22 Enter the inside of the reservoir. Then, the refrigerant enters the inside of the upper body 1, and passes through the drying bag 11 having the molecular sieve 111.
  • the molecular sieve 111 can absorb the moisture in the refrigerant, preventing the refrigerant from flowing through the throttle valve, causing excessive moisture inside the refrigerant to cause ice. Plugging phenomenon. Then, the refrigerant passes through the small holes in the screen 23, is filtered through the non-woven filter 25 and the second metal filter 26, and then flows out of the refrigerant outlet 27 to thereby make the refrigerant a certain size. Impurities remain in the reservoir to complete the predetermined function of the reservoir.
  • the effective cut-off area of the nonwoven fabric filter 25 is a portion corresponding to the refrigerant outlet 27, and in order to secure the filtration precision of the nonwoven fabric filter 25, it generally has a high density. According to the study by the inventors, the higher the density of the nonwoven fabric filter 25 under the same cut-off area, the greater the flow resistance, and thus the load on the refrigeration system will increase. On the other hand, since the flow resistance of the nonwoven fabric filter 25 is large, impurities in the refrigerant are likely to accumulate on the surface of the nonwoven fabric filter 25, resulting in a decrease in the flow capacity of the nonwoven fabric filter 25, and further increase in flow resistance. Large, resulting in a vicious circle that seriously affects the performance of the refrigeration system.
  • the present invention provides the following technical solutions:
  • a liquid reservoir comprising a second body, the second body having a first connecting port and a second connecting port, further comprising engaging with the inner wall of the second body to form a liquid flow chamber a filter cartridge
  • the filter cartridge includes a filter portion having a filtering capability, and a first mating portion and a second mating portion disposed at opposite ends of the filter portion, the second mating portion and the liquid flow chamber Connected to the first connection port and the second connection port respectively, and the refrigerant is At least one filtration is performed during the process of flowing a connection port to the second connection port.
  • a liquid reservoir comprising a first body and a second body, wherein the second body has an open structure at one end facing the first body, and the second body is opposite to the first body
  • the liquid reservoir further comprises a filter cartridge
  • the filter cartridge includes a first mating portion, a second mating portion, and a filtering portion located at the middle portion; the first mating portion Cooperating with the inner wall of the second body, a space for the refrigerant to flow between the filter portion and the inner wall of the second body, and a second connection between the second mating portion and the second body
  • the mouth is connected, and the inside of the filter portion communicates with the second connection port through the second fitting portion, and the refrigerant is filtered at least once during the flow between the first connection port and the second
  • the second engaging portion has a tubular portion extending into the second connecting port at least, and the second engaging portion is provided with an annular sealing protrusion on an outer surface of the engaging portion of the inner wall portion of the second connecting port.
  • the annular sealing protrusion is fitted to the inner wall portion of the second connecting port to ensure that the refrigerant does not pass through the space between the outer portion of the second fitting portion and the second connecting port.
  • At least a portion of the outer wall portion of the first mating portion is tightly fitted with the inner wall portion of the second body or a tight fit is achieved by the annular seal.
  • the second body includes a first inner wall portion that cooperates with the first mating portion of the filter cartridge and a second inner wall portion that is adjacent to the first body, the inner diameter of the first inner wall portion being smaller than the second inner wall portion
  • the inner diameter is smooth and excessively between the first inner wall portion and the second inner wall portion, and the outer wall portion of the first fitting portion is in an annular tight fit with the first inner wall portion to prevent the refrigerant from the outer wall portion of the first fitting portion
  • the inner wall portion of the second body passes between.
  • the outer wall portion of the first engaging portion is not entirely in interference fit with the inner wall portion of the second body.
  • the first mating portion is provided with a plurality of positioning flanges in the circumferential direction, and the filter cartridge passes through the positioning flange and the second device.
  • the inner wall of the body is fixed by an interference fit, and the other portion of the outer wall of the first mating portion has a gap with the inner wall of the second body, and the liquid reservoir is further provided with a filter cover at the first mating portion.
  • the filter cover includes a base body and a filter mesh fixed by the base body.
  • the second engaging portion is also provided with a plurality of positioning flanges in the circumferential direction, and the other portions of the outer wall of the second engaging portion have a certain space or gap with the inner wall of the second body for the refrigerant to circulate; and the second The fitting portion has a space between the portion where the second body is provided with the first connection port for the refrigerant to circulate.
  • a gap is formed between the first mating portion of the filter cartridge and the inner wall of the second body, and an elastic seal is disposed between the first mating portion of the filter cartridge and the inner wall of the second body,
  • a fitting portion is provided with a groove for accommodating the sealing member, and the groove is provided with an annular elastic sealing member for sealing between the first fitting portion and the inner wall of the second body to prevent the refrigerant from the first fitting portion.
  • the outer wall portion passes between the inner wall portion of the second body.
  • the filter portion of the filter cartridge includes a support frame and a filter net fixedly disposed with the support frame, the support frame includes a first rib disposed axially and a second rib disposed circumferentially, the filter mesh being the first rib and the second rib Fixed.
  • the filter mesh of the filter portion is a nylon filter mesh
  • the support frame is a thermoplastic material, and the two are fixed together by injection molding.
  • the filter cartridge is formed by injection molding of a thermoplastic material, and the filter mesh is fixed by plastic; and the first mating portion is provided with at least one annular sealing piece outward from the base, and the annular sealing piece is injection molded by the filter cartridge.
  • the first mating portion is further provided with a positioning portion.
  • the annular sealing sheet is larger than other portions of the first mating portion, and the annular sealing sheet is in contact with the inner wall portion of the second body.
  • the second fitting portion and the first fitting portion of the filter cartridge are also made of a thermoplastic material, and are integrally injection-molded with the filter portion, and the nylon filter is fixed by injection molding as an insert during injection molding.
  • the second mating portion is also fixed with a filter, and the refrigerant can be filtered by the filter portion or the second mating portion when the refrigerant flows between the first connecting port and the second connecting port.
  • the first body is a cylindrical structure with an opening facing the second body,
  • the inner cavity composed of the first body and the second body is provided with a drying bag, the drying bag has molecules therein, and a blocking member is disposed between the filter cartridge and the drying bag, and the blocking member passes through the second device
  • the first mating portion of the body or the filter cartridge is fixed; the blocking member is provided with a plurality of through holes to ensure the circulation of the refrigerant.
  • the blocking member is axially restrained by a positioning convex portion disposed on the second body, the positioning convex portion is assembled into the second body in the filter cartridge, and is loaded with the blocking member, and then crimped to the second device.
  • the outer wall portion or the dot of the body is convexly formed to form a positioning convex portion to achieve the restriction of the blocking member.
  • the blocking member may be a metal mesh fixed inside the first fitting portion, the metal mesh is provided with a plurality of through holes; the filter cartridge and the second body are fixed by the positioning convex portion, and the positioning convex portion is After the filter cartridge is assembled into the second body, the outer wall portion of the second body is then crimped or struck to form a positioning protrusion.
  • the filter portion of the filter cartridge includes a support frame and a filter net fixedly disposed with the support frame, the support frame includes a first rib disposed axially and a second rib disposed circumferentially, the filter mesh being the first rib and the second rib
  • the filter of the filter portion is a nylon filter mesh
  • the support frame is a thermoplastic material, and the two are fixed together by injection molding.
  • the invention also provides a method for manufacturing a liquid reservoir, a method for manufacturing a liquid reservoir, the liquid reservoir comprising a first body and a second body, the second body being at an end facing the first body In the open structure, the second body has a first connecting port and a second connecting port at the other end facing away from the first body, the liquid reservoir further includes a filter cartridge, the filter cartridge includes a first mating portion, a second fitting portion and a filter portion located in the middle portion; the first fitting portion is engaged with the inner wall of the second body, and a space for circulating a refrigerant is provided between the filter portion and the inner wall of the second body,
  • the second mating portion is coupled to the second connecting port, and a space between the filtering portion and the inner wall of the second body communicates with the first connecting port, and the inside of the filtering portion is connected to the second through the second mating portion
  • the mouth is connected, and the refrigerant is filtered at least once during the flow between the first connection port and the second connection port, and
  • Processing of the first body and the second body The assembly of the filter cartridge: cutting the filter into a predetermined size and winding into a cylindrical shape, and then placing the wound filter fixed on the injection mold to obtain a filter cartridge;
  • the first body and the assembled second body assembly are assembled, and the first body and the second body are butted or plugged, and then welded to seal the two.
  • the present invention also provides an air conditioning refrigeration system including a compressor, a heat exchanger, and a reservoir connected to the compressor or heat exchanger, the structure of the reservoir being as described above.
  • the liquid supply device improves the filter member of the refrigerant from the non-woven filter to the filter portion of the filter cartridge, and the refrigerant is At least one filtration is performed during a flow of the connection port to the second connection port or the opposite flow, and the filter portion is a cylindrical structure, and the effective intercepting area of the refrigerant and the refrigerant is greater than the effective effect of the refrigerant outlet and the refrigerant in the background art.
  • the intercepting area increases the interception area of most refrigerants and filter components, and ensures the filtration accuracy of the liquid reservoir while solving the large flow resistance caused by the non-woven filter having excessive density. Disadvantages.
  • the present invention also provides an air conditioning refrigeration system including a compressor, a heat exchanger, and a reservoir connected to the compressor or heat exchanger, the reservoir being the reservoir described above. Since the above liquid reservoir has the above technical effects, the air conditioning refrigeration system having the liquid reservoir should also have a corresponding technical effect.
  • Figure 1 is a schematic view showing the structure of a related liquid receiver
  • FIG. 2 is a schematic structural view of a filter cartridge according to a first embodiment of the present invention
  • FIG. 3 is a schematic view of the A-A structure of FIG.
  • FIG. 4 is a schematic structural view of a liquid receiver according to a first embodiment of the present invention
  • FIG. 5 is a schematic structural view of a filter cover according to an embodiment of the present invention
  • Figure 6 is a schematic view of the B-B structure of the filter cover provided in Figure 5;
  • Figure 7 is a schematic view showing the C-C structure of the filter cartridge provided in Figure 2;
  • Figure 8 is a partial enlarged view of the filter cartridge shown in Figure 3;
  • FIG. 9 is a schematic structural view of a liquid receiver according to a second embodiment of the present invention.
  • FIG. 10 is a schematic structural view of a liquid storage device according to a third embodiment of the present invention;
  • FIG. 11 is a schematic view of FIG. Schematic diagram of the filter cartridge of the liquid reservoir;
  • Figure 12 is a schematic view of the D-D of the filter cartridge shown in Figure 11;
  • Figure 13 is a schematic view showing the structure of a liquid receiver according to a fourth embodiment of the present invention
  • Figure 14 is a partially enlarged schematic view showing a portion I of the liquid reservoir shown in Figure 13;
  • Figure 15 is a partially enlarged schematic view showing a portion II of the liquid reservoir shown in Figure 13;
  • Figure 16 is a schematic view showing the structure of the filter cartridge of the liquid reservoir shown in Figure 13;
  • Figure 17 is a schematic view showing the E-E direction of the filter cartridge shown in Figure 16;
  • Figure 18 is a schematic view showing the structure of a liquid storage device according to a fifth embodiment of the present invention.
  • the core of the present invention is to provide a reservoir that reduces the filtration flow resistance while ensuring its own filtration accuracy.
  • Another core of the present invention is to provide an air conditioning refrigeration system having the above described liquid reservoir.
  • the reservoir includes a first body 4, a second body 3, and a filter cartridge 33.
  • the first body 4 is a cylindrical structure, and the second body 3 is at one end facing the first body.
  • the filter cartridge 33 is inserted into the second body 3 from the end toward the opening of the first body, and the second body 3 is butted or inserted into the first body 4 and fixed by welding, and the other two are
  • the seal can also be achieved by other means such as a threaded connection or a threaded connection with a seal.
  • the second body 3 is disposed at a distance from the other end of the first body 4 with a first connecting port 31 and a second connecting port 32.
  • the inner cavity formed by the first body 4 and the second body 3 is provided with a drying bag. 41.
  • the drying bag 41 has a molecular sieve 411 therein.
  • the positioning flange 334 of the upper end of the filter cartridge 33 has an interference fit with the inner wall of the second body 3.
  • the lower end of the filter cartridge 33 has a slope 335 which forms a liquid flow chamber with the inner wall of the second body 3, and the liquid flow chamber passes through the filter.
  • the space between the outer wall portion of the cylinder 33 and the inner wall of the second body 3 communicates with the upper space of the filter cartridge 33; in addition, the filter cartridge may not be provided with a slope, but may form a fluid circulation passage such as a step portion or a curved surface by other forms. and many more.
  • the filter cartridge 33 includes a filter portion 331 and a first mating portion 332 adjacent to the first body and a second mating portion 333 facing away from the first body.
  • the first mating portion 332 and the second mating portion 333 may be different from the filter portion.
  • the material of 331 is connected to both ends of the filter portion 331, and the two are in communication.
  • the liquid flow chamber is in direct communication with the first connection port 31
  • the second mating portion 333 is in direct communication with the second connection port 32, that is, the exterior of the filter portion 331 and the first connection port. 31 is connected, and the inside of the filter portion 331 communicates with the second connection port 32 through the second fitting portion 333.
  • the outer wall portion of the first fitting portion 332 of the filter cartridge 33 can also be connected to the second body 3 by an interference fit.
  • the refrigerant After the refrigerant enters the liquid flow chamber through the first connection port 31, the refrigerant can only pass through the filter.
  • the portion 331 enters the filter cartridge 33 and passes through the second fitting portion 333 to the second connection port 32, thereby being filtered.
  • a portion of the refrigerant will further enter the first body 4, and the moisture contained therein is absorbed by the molecular sieve 411 in the drying bag 41 to prevent excessive moisture in the refrigerant from causing ice plugging in the throttle valve;
  • the reservoir can flow out through the second connection port 32.
  • the liquid receiver provided by the present invention causes the refrigerant to flow through the first connection port 31 to the second connection port 32 at least once, thereby trapping impurities in the refrigerant inside the liquid storage device.
  • the purpose of filtering the refrigerant is achieved, and the filtration area of the filter portion is relatively large, and the resistance is small.
  • the reservoir provided by the present invention improves the filter member of the refrigerant from the non-woven filter to the filter portion 331 of the filter cartridge 33, compared to the reservoir mentioned in the background art, and the filtration
  • the portion 331 is a cylindrical structure, and the effective intercepting area of the refrigerant and the refrigerant is larger than the effective intercepting area of the refrigerant outlet and the refrigerant in the background art, so that the intercepting area of most of the refrigerant and the filtering member is increased, and the liquid storage device is ensured.
  • the filtration accuracy is solved, and the disadvantage of using a non-woven filter having a high density is large.
  • the flow direction of the refrigerant may be opposite to the above process, that is, the refrigerant may enter from the second connection port 32, enter the inside of the filter cartridge 33 through the second fitting portion 333, and be filtered through the filter cartridge 33.
  • the refrigerant flows out of the first connection port 31, that is, the refrigerant first enters the inside of the filter cartridge 33, and passes through the filter portion 331. After filtering, it enters the liquid flow chamber and flows out of the reservoir through the first connection port 31.
  • the filter portion 331 includes a support frame 3310 and a filter net 3311 fixed to the support frame 3310.
  • the support frame includes a first rib disposed in the axial direction and a circumferential direction. a second rib, the filter is fixed by the first rib or the second rib, or is fixed by the first rib and the second rib; wherein the support frame 3310 can be plastic, by injection molding, the filter 3311 is injected As an insert, it is fixed by injection molding. Moreover, the second engaging portion 333 and the first engaging portion 332 may also be integrally molded with the support frame 3310, so that the number of components is small and the assembly is relatively convenient.
  • the outer wall of the first engaging portion 332 of the filter cartridge 33 does not have an interference fit with the inner wall of the second body 3, and the filter cartridge 33 has a positioning flange 334 at the lower end of the first engaging portion 332 and the filter cartridge.
  • the flange 334 is distributed along the axial direction and the circumferential direction of the filter cartridge 33, and the filter cartridge 33 is fixed by an interference fit of the positioning flange 334 with the inner wall of the second body 3, and other portions of the outer wall of the first fitting portion 332 are
  • the inner wall of the second body 3 has a gap or a space.
  • the contact area of the positioning flange 334 and the inner wall of the second body 3 in the above connection mode is greatly reduced, thereby reducing the filter cartridge 33 and the second The friction between the bodies 3, which in turn reduces the wear of the components that occur during the installation of the reservoir, thereby extending the working life of the reservoir.
  • the positioning flanges 334 are generally symmetrically arranged as shown in FIG. 2 and FIG. 3, and are evenly distributed at the upper end and the lower end of the filter cartridge 33, respectively; and 6 may be disposed in the filter cartridge 33. The upper and lower ends are evenly distributed three.
  • connection manner of the filter cartridge 33 and the second body 3 can be replaced by a clearance fit by a interference fit.
  • the positioning flange 334 and the second body 3 are closely spaced, and the filter cartridge 33
  • the positioning portion 34 is fixed by the positioning convex portion 34 located on the inner wall of the second body 3, and the second engaging portion 333 is sealingly connected to the second connecting port 32 of the second body 3.
  • the liquid reservoir is further provided with an interference fit fixed with the first mating portion 332.
  • the filter cover 38 and the filter cover 38 are in interference fit with the open end 338 of the first mating portion 332, and may be fixed by other means such as crimping. After the filter cover 38 is inserted into the open end 338 of the first mating portion 332, the filter cover is 38 and the open end of the first mating portion 332
  • the end surface 330 of the 338 is substantially flush or slightly lower than the end surface 330; at this time, even if the refrigerant passes through the first connection port 31 and flows into the interior of the first body 4 from the gap between the filter cartridge 33 and the second body 3, When a part of the refrigerant needs to flow out of the liquid reservoir, it still flows through the filter cover 38 provided on the first fitting portion 332, thereby preventing leakage of impurities in the refrigerant, thereby completing the filtration of the portion of the refrigerant.
  • the filter cover 38 can be a filter plate having a relatively simple structure, and a filter net is fixed inside the filter plate.
  • the filter cover may also be a structure as shown in FIG. 5 and FIG. 6.
  • FIG. 5 is a schematic structural view of a filter cover according to a specific embodiment of the present invention
  • FIG. 6 is a schematic view of the B-B structure of FIG.
  • the filter cover 38 includes a metal base 381 and a metal filter 382 embedded in the base 381.
  • the filter cover 38 of such a structure is fixed to the filter 382 by the base 381 with respect to the above filter plate, and the connection strength between the filter cover 38 and the filter cartridge 33 is remarkably improved.
  • the base 381 may also be a plastic base
  • the filter 382 may be a nylon filter
  • the base 381 and the filter 382 may be injection molded. At this time, the filter 382 in the filter cover 38 has a higher density, so that the liquid filter has a higher filtering capacity.
  • the above structure can ensure the smooth realization of the filtering function of the liquid reservoir, and further reduce the wear of the filter cartridge 33 and the second body 3 during the installation process.
  • the positioning flange 334 can not only play a certain guiding role in the installation of the filter cartridge 33, but also prevent the filter cylinder 33 from being excessively inclined in the second body 3, thereby causing uneven assembly, thereby ensuring the filter cartridge 33.
  • the reliability of the work ensures that the refrigerant flows through the first connection port 31 to the second connection port 32 or flows in the opposite direction at least once, and the frictional resistance is relatively small during assembly.
  • a blocking member 35 may be disposed between the filter cartridge 33 and the drying bag 41, and the blocking member 35 is axially restrained by the positioning convex portion 34 to prevent the deflection or axial direction of the filter cartridge 33 from being generated during transportation or vibration.
  • the plurality of through holes on the blocking member 35 ensure normal circulation of the refrigerant, and at the same time,
  • the blocking member 35 fixes the filter cartridge 33 to prevent the filter cartridge 33 from being deformed by the force after being directly connected to the positioning convex portion 34; at the same time, the possibility that the drying bag 41 falls into the filter cartridge or the filter cover is connected to the filter cover can be completely avoided. Guarantee normal filtration capacity.
  • the blocking member 35 is preferably a metal barrier. Obviously, the blocking member 35 can also extend the working life of the reservoir.
  • a sealing member is further disposed between the first engaging portion 332a of the filter cartridge 33a and the inner wall of the second body 3a.
  • the first engaging portion 332a is provided with a recess 339 for receiving the sealing member.
  • a 0-type sealing jaw 39 is provided in the groove 339 as a sealing member, so that the first fitting portion 332a and the inner wall of the second body 3a are well sealed, so that the refrigerant can only be filtered after entering the liquid flow chamber.
  • the portion 331 When the portion 331 enters the inside of the filter cartridge 33 or flows in the opposite direction, it can flow only to the liquid flow chamber by the filter portion 331, so that impurities in the refrigerant can be efficiently filtered.
  • the sealing member allows almost all of the refrigerant to directly interact with the filter portion 331 as compared with the manner in which the filter cover 38 is provided, and the area of the filter portion 331 is obviously larger than the area of the filter cover 38, so that it is not necessary to provide a filter cover.
  • the inner wall of the second body 3a includes a first inner wall portion 36 that is in contact with the sealing member and a second inner wall portion that is received from the upper end of the first inner wall portion 36. 37.
  • the inner diameter of the first inner wall portion 36 is smaller than the inner diameter of the second inner wall portion 37, and the first inner wall portion 36 and the second inner wall portion 37 are smoothly excessively arranged as an assembly guide portion, such as a slope or an arc to achieve smoothness. Excessive orientation.
  • the sealing member When assembling, the sealing member is first mounted to the filter cartridge 33a, and then both are fitted into the second inner wall portion 37 having a larger inner diameter, and the mounting is continued such that the two are engaged with the first inner wall portion 36 having a smaller inner diameter to achieve the seal.
  • the amount of compression of the piece requires a good seal of the filter cartridge 33a and the second body 3a.
  • the seal does not come into contact with the second inner wall portion 37 during the mounting process, and the friction between the first inner wall portion 36 and the second inner body portion 3a is close to zero, but only in the assembly.
  • An inner wall portion 36 is in contact with each other, thereby effectively reducing the wear of the seal member during installation and ensuring its working life. That is, the second body 3a is in the form of a wall thickness unequal, and the structure can be cold pressed or otherwise The way of machining is achieved.
  • FIG. 10 is a schematic structural view of a liquid receiver according to a third embodiment of the present invention.
  • the reservoir further includes a blocking member 35 abutting against the filter cartridge.
  • the blocking member 35 can be located at the position of the second inner wall portion 37, and is axially positioned by the positioning convex portion 34. Implement positioning or limit.
  • the blocking member 35 and the filter cartridge may also be connected to each other to form a gap to prevent the filter cartridge from moving toward the first body and prevent the drying bag 41 from moving further toward the filter cartridge.
  • the blocking member 35 is disposed above the filter cartridge 33 to prevent the drying bag from falling into the filter cartridge to extend the life of the reservoir.
  • the same structure of the blocking member 35 may be extended on the second inner wall portion 37. The life of the reservoir.
  • the second mating portion may be
  • the 333 is formed in one piece with the filter portion 331, and the second mating portion 333 is also made of a filter material. After the refrigerant is brought into contact with the filter cartridge 33, the filter cartridge 33 can be moved in and out of the filter cartridge 33 or the filter of the second mating portion 333. Obviously, the cross-sectional area of the refrigerant and the filter cartridge 33 is further increased, so that the flow resistance of the reservoir is lowered.
  • the second connecting port 32 may have a stepped structure
  • the second engaging portion 333 has a tubular portion extending into the second connecting port 32
  • the second engaging portion 333 is engaged with the second connecting port 32.
  • the outer surface of the tubular portion is further provided with an annular sealing protrusion 336 which can be fitted with the inner wall portion of the second connecting port 32 to ensure that the refrigerant does not pass from the second engaging portion 333 and the second connecting port.
  • the annular sealing protrusion 336 may also have a certain elasticity.
  • the friction between the large second engaging portion 333 and the inner wall of the second body ensures a good seal of the second fitting portion 333.
  • the above-mentioned annular seal projections 336 may be provided in an arc shape to thereby form a more uniform frictional force.
  • a step portion 337 may be provided instead of the inclined surface as an axial positioning portion with the second body to ensure the consistency of the assembly of the reservoir.
  • the filter cartridge 33b is formed by injection molding a plastic material.
  • the first fitting portion 332b is provided with an annular sealing piece 3300 outwardly from the base portion 3302, and the annular sealing piece 3300 and the filter cartridge 33b are integrally injection molded.
  • the engaging portion 332b is further provided with a positioning portion 3303.
  • the positioning portion 3303 may be an annular structure, or may be a combination of several arcs for positioning; the annular sealing piece 3300 is larger than other portions of the first engaging portion 332b, that is, an annular seal.
  • the sheet 3300 is larger than the positioning portion 3303; during assembly, the annular sealing piece 3300 is in contact with the first inner wall portion 36 of the second body 3b to be elastically deformed, and the two are sealed by a fitting fit; As shown in Fig. 13, in this way, the refrigerant enters and exits from the filter portion 331 of the filter cartridge 33b, and is filtered by the filter 3311.
  • the annular sealing piece 3300 is adhered to the inner wall portion of the second body, and the other portion of the filter cylinder 33b is in a clearance fit with the inner wall of the first body 3b.
  • the assembly is relatively convenient, and the frictional resistance during assembly is relatively small.
  • annular sealing piece 3300 and the filter cartridge are integrally formed by injection molding, and the assembly parts are also reduced.
  • a blocking member 35 is also disposed between the filter cartridge 3b and the drying bag 41, and its function is the same as above, and will not be described again here.
  • the fifth specific embodiment will be described below, as shown in FIG.
  • the main difference between this embodiment and the fourth embodiment described above is that no blocking member is provided, and the fixing of the filter cartridge 33b is fixed by fixing the positioning portion 3303 of the filter cartridge 33b by clicking or rolling on the second body.
  • a metal mesh 35a for preventing the drying bag 41 from falling is provided inside the first engaging portion 332b, and the metal mesh 35a and the inner hole portion of the first engaging portion 332b can be fixed in a tight manner. This reduces the length of the reservoir in the axial direction.
  • the filter material constituting the filter 3311 of the filter portion 331 may be a metal filter medium such as a stainless steel mesh or a non-metal filter medium, such as a nylon material.
  • nylon as a synthetic fiber has better filtration capacity, and has outstanding tensile strength, surface hardness, wear resistance, chemical resistance, etc., making nylon filter 3311 Has a good overall performance.
  • the positioning convex portion 34 may be a plurality of points formed by dot punching.
  • the inwardly protruding bumps may also form inward annular projections by means of rolling grooves. Different from the specific processing equipment of the punching and rolling groove, the magnitude of the force applied to the filter cartridge 33 by the positioning convex portion 34 formed by the two is also different, and the specific processing can be determined according to the working performance of the liquid reservoir and the processing cost. A method of processing the positioning convex portion 34.
  • the sealing member may be a packing or a sealing jaw, such as a 0-type sealing jaw.
  • Type 0 sealing jaw 39 is a type of seal commonly found in engineering equipment, which has superior elasticity and will be squeezed during the installation of the filter cartridge 33, thereby producing a more pronounced deformation, thereby making the second body
  • the inner wall exerts a large elastic force, and the sealing effect is more prominent.
  • the air conditioning refrigeration system provided by the present invention includes a compressor and a liquid reservoir connected to the compressor, and the liquid reservoir is any one of the above liquid reservoirs. Since the above liquid reservoir has the above technical effects, the air conditioning refrigeration system having the liquid storage device should also have corresponding technical effects, which will not be described in detail herein.

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Abstract

一种贮液器，包括第一器体（4）、第二器体（3）。第一器体（4）为开口朝向第二器体（3）的筒状结构，第二器体（3）在朝向第一器体（4）的一端为开口结构，第二器体（3）在背向第一器体（4）的另一端具有第一连接口（31）和第二连接口（32）。贮液器还包括过滤筒（33），过滤筒（33）包括第一配合部（332），第二配合部（333）以及位于中段的过滤部（331）。第一配合部（332）与第二器体（3）的内壁配合，过滤部（331）与第二器体（3）的内壁之间具有供制冷剂流通的空间，第二配合部（333）与第二连接口（32）连接，过滤部（331）与第二器体（3）的内壁之间的空间与第一连接口（31）连通，过滤部（331）的内部通过第二配合部（333）与第二连接口（32）连通，制冷剂在第一连接口（31）与第二连接口（32）之间流动的过程中至少经过一次过滤，且过滤时流阻相对较小。

Description

一种贮液器、 贮液器制造方法及空调制冷系统 本申请要求于 2012 年 2 月 27 日提交中国专利局、 申请号为 201210046481.0、 发明名称为 "空调制冷系统及其贮液器" 的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。 技术械
本发明涉及制冷系统技术领域， 尤其涉及一种流阻较低的贮液器。 本发明还涉及一种具有上述贮液器的空调制冷系统。 背景技术
贮液器是制冷系统中较为重要的配件， 其作用是过滤制冷剂中的杂 质、 吸收制冷剂中的水分并储存一定量的制冷剂， 因此其广泛应用于汽 车空调等制冷系统中。 目前， 汽车空调中的贮液器的种类较多， 其中上 下器体类贮液器的应用范围相对较广。
参见图 1 , 图 1为一种相关的贮液器的结构示意图。
如图 1所示， 该贮液器外形细长， 由上器体 1和下器体 2对接后焊 接组合而成。上器体 1内部装有干燥包 11 ,干燥包 11内具有分子筛 111。 下器体 2下端开设制冷剂进口 21和制冷剂出口 27,制冷剂进口 21和制 冷剂出口 27上端均设置有铝材质的挡网 23。挡网 23底面具有若干个小 孔， 其上点焊凹状的第一金属过滤网 22, 该第一金属过滤网 22与制冷 剂进口 21相对， 且挡网 23与制冷剂出口 27之间依次设置无纺布滤片 25和第二金属过滤网 26。 上述挡网 23上端通过设置于上器体 1内壁的 凸点 24卡接固定于上器体 1内部， 该凸点 24通过在下器体 2外部打点 形成。
制冷剂由制冷剂进口 21流入， 并经过第一金属过滤网 22过滤后进 入该贮液器的内部。 紧接着， 制冷剂进入上器体 1内部， 通过具有分子 筛 111的干燥包 11 , 分子筛 111可吸收制冷剂中的水分， 防止制冷剂流 经节流阀时， 其内部的水分过多而造成冰堵现象。 然后， 制冷剂通过挡 网 23上的小孔，经无纺布滤片 25和第二金属过滤网 26过滤后，从制冷 剂出口 27中流出该贮液器，从而将制冷剂中一定大小的杂质留在贮液器 内， 完成该贮液器的预定功能。
上述贮液器中， 无纺布滤片 25 的有效截流面积为其与制冷剂出口 27对应的部分， 而为了保证无纺布滤片 25的过滤精度， 其通常具有较 高的致密度。 经发明人研究发现， 在同样的截流面积下， 无纺布滤片 25 的致密度越高， 其流阻越大， 因此将增加制冷系统的负荷。 另一方面， 由于无纺布滤片 25的流阻较大， 制冷剂中的杂质易在无纺布滤片 25表 面堆积， 导致无纺布滤片 25的流通能力减弱， 其流阻进一步增大，从而 造成恶性循环， 严重影响制冷系统的性能。
有鉴于此， 如何改进贮液器的结构， 以在保证其过滤精度的同时降 低其流阻， 已成为本领域的技术人员亟待解决的技术难题。 发明内容
本发明的目的是提供一种贮液器， 该贮液器在保证自身过滤精度的 同时降低自身流阻。 本发明的另一目的是提供一种具有上述贮液器的空 调制冷系统。
为了实现上述第一个目的， 本发明提供如下技术方案：
一种贮液器， 包括第二器体， 所述第二器体具有第一连接口和第二 连接口， 其特征在于， 还包括与所述第二器体内壁配合以形成液流腔的 过滤筒， 所述过滤筒包括具有过滤能力的过滤部以及设置于所述过滤部 两端， 且相连通的第一配合部和第二配合部， 所述第二配合部和所述液 流腔分别与所述第一连接口和所述第二连接口相连通， 制冷剂由所述第 一连接口流至所述第二连接口的过程中至少经过一次过滤。
一种贮液器， 包括第一器体、 第二器体， 第二器体在朝向所述第一 器体的一端为开口结构， 第二器体在背向所述第一器体的另一端具有第 一连接口和第二连接口， 其特征在于， 所述贮液器还包括过滤筒， 过滤 筒包括第一配合部、 第二配合部、 及位于中段的过滤部； 第一配合部与 所述第二器体的内壁配合， 过滤部与所述第二器体的内壁之间具有供制 冷剂流通的空间， 所述第二配合部与所述第二器体设置第一连接口的这 一部位之间具有供制冷剂流通的空间， 所述第二配合部与所述第二连接 口连接， 过滤部与所述第二器体的内壁之间的空间与所述第一连接口连 通， 过滤部的内部通过第二配合部与第二连接口连通， 制冷剂在所述第 一连接口与所述第二连接口之间流动的过程中至少经过一次过滤。
进一步地，所述第二配合部至少有部份呈管状伸入所述第二连接口， 所述第二配合部在与第二连接口的内壁部配合部位的外表面设置有环状 密封突起， 环状密封突起与所述第二连接口的内壁部紧配， 以保证制冷 剂不会从第二配合部的外部与第二连接口之间的空间通过。
所述第一配合部的外壁部至少有部份与所述第二器体的内壁部之间 紧配合或通过环状密封件实现紧配合。
进一步地， 所述第二器体包括与过滤筒的第一配合部配合的第一内 壁部以及靠近所述第一器体的第二内壁部， 第一内壁部的内径小于第二 内壁部的内径且第一内壁部与第二内壁部之间光滑过度， 第一配合部的 外壁部与所述第一内壁部呈环状紧配合， 以防止制冷剂从第一配合部的 外壁部与所述第二器体的内壁部之间通过。
所述第一配合部的外壁部并不是整个都与第二器体的内壁部过盈配 合， 第一配合部沿周向设置有多个定位凸缘， 过滤筒通过定位凸缘与第 二器体的内壁过盈配合而固定， 而第一配合部的外壁的其它部位与第二 器体的内壁具有间隙， 所述贮液器在第一配合部还固定设置有过滤盖， 过滤盖包括基体和通过所述基体固定的过滤网。
所述第二配合部沿周向也设置有多个定位凸缘， 而第二配合部的外 壁的其它部位与第二器体的内壁具有一定的空间或间隙以供制冷剂流 通； 且第二配合部与所述第二器体设置第一连接口的部位之间具有一定 的空间以供制冷剂流通。
所述过滤筒的第一配合部与所述第二器体的内壁之间具有间隙， 所 述过滤筒的第一配合部与所述第二器体的内壁之间设置有弹性密封件， 第一配合部设置有一个容纳密封件的 槽， 在 槽设置有环状的弹性密 封件， 使第一配合部与第二器体的内壁之间能密封， 以防止制冷剂从第 一配合部的外壁部与所述第二器体的内壁部之间通过。
所述过滤筒的过滤部包括支撑架及与支撑架固定设置的过滤网， 支 撑架包括轴向设置的第一肋条及周向设置的第二肋条， 过滤网被第一肋 条和或第二肋条所固定。
进一步地， 所述过滤部的过滤网为尼龙过滤网， 支撑架为热塑性塑 料材料， 两者通过注塑成型固定在一起。
进一步地， 所述过滤筒为热塑料材料经注塑加工而成， 过滤网通过 塑料固定； 且第一配合部至少设置有一个从基部向外的环状密封片， 环 状密封片为过滤筒注塑时一体注塑而成， 第一配合部还设置有定位部， 环状密封片大于第一配合部其它部位， 环状密封片与所述第二器体的内 壁部接触配合。
进一步地， 所述过滤筒的第二配合部、 第一配合部也为热塑性塑料 材料， 与所述过滤部一体注塑成型加工而成， 所述尼龙过滤网在注塑时 作为嵌件通过注塑固定。
进一步地， 所述第二配合部也固定有过滤网， 制冷剂在所述第一连 接口与第二连接口之间流动时可通过过滤部或第二配合部实现过滤。
进一步地， 所述第一器体为开口朝向所述第二器体的筒状结构， 所 述第一器体与第二器体组成的内部腔体中设置有干燥包， 干燥包内具有 分子 ， 在所述过滤筒与干燥包之间设置有阻挡件， 阻挡件通过所述第 二器体或过滤筒的第一配合部固定； 阻挡件设置有若干个通孔以保证制 冷剂的流通。
所述阻挡件通过第二器体上设置的定位凸部实现轴向限位， 所述定 位凸部是在过滤筒装配进第二器体、 并装入阻挡件， 然后再压接第二器 体的外壁部或打点使之内凸形成定位凸部， 以实现对阻挡件的限位。
所述阻挡件可以是在第一配合部的内部固定的金属挡网， 金属挡网 设置有若干通孔； 过滤筒与所述第二器体通过定位凸部固定， 所述定位 凸部是在将过滤筒装配进第二器体后， 然后再压接第二器体的外壁部或 打点使之内凸形成定位凸部。
所述过滤筒的过滤部包括支撑架及与支撑架固定设置的过滤网， 支 撑架包括轴向设置的第一肋条及周向设置的第二肋条， 过滤网被第一肋 条和或第二肋条所固定； 且所述过滤部的过滤网为尼龙过滤网， 支撑架 为热塑性塑料材料， 两者通过注塑成型固定在一起。
本发明还提供一种贮液器的制造方法， 一种贮液器的制造方法， 贮 液器包括第一器体、 第二器体， 第二器体在朝向所述第一器体的一端为 开口结构， 第二器体在背向所述第一器体的另一端具有第一连接口和第 二连接口， 所述贮液器还包括过滤筒， 过滤筒包括第一配合部、 第二配 合部、 及位于中段的过滤部； 第一配合部与所述第二器体的内壁配合， 过滤部与所述第二器体的内壁之间具有供制冷剂流通的空间， 所述第二 配合部与所述第二连接口配合连接， 过滤部与所述第二器体的内壁之间 的空间与所述第一连接口连通， 过滤部的内部通过第二配合部与第二连 接口连通， 制冷剂在所述第一连接口与所述第二连接口之间流动的过程 中至少经过一次过滤， 所述贮液器的制造方法包括以下制造步骤：
第一器体、 第二器体的加工成型； 过滤筒的组装： 将过滤网裁成预定尺寸并卷绕成筒状， 然后将卷绕 固定好的过滤网置于注塑模具上注塑得到过滤筒；
将过滤筒装入第二器体；
压接第二器体的外壁部或打点使之内凸形成定位凸部；
将第一器体与组装完成的第二器体组件装配， 使第一器体、 第二器 体对接或插接后进行焊接， 使两者之间密封固定。
本发明还提供一种空调制冷系统， 包括压缩机、 热交换器以及与所 述压缩机或热交换器连接的贮液器， 贮液器的结构如上所述。
通过上述描述可知， 相比于背景技术中提到的贮液器， 本发明提供 的贮液器将制冷剂的过滤部件由无纺布滤片改进为过滤筒的过滤部， 使 制冷剂由第一连接口流至第二连接口或相反流动的过程中至少经过一次 过滤， 且该过滤部为柱面结构， 其与制冷剂的有效截流面积大于背景技 术中的制冷剂出口与制冷剂的有效截流面积， 使得大部分制冷剂与过滤 部件的截流面积增大， 在保证贮液器的过滤精度的同时， 解决了采用致 密度过高的无纺布滤片所带来的流阻较大的弊端。 另一方面， 该贮液器 自身的流阻降低后， 制冷剂中的杂质不易在过滤筒表面堆积， 杂质对过 滤筒的流通能力的影响有所减小， 进而保证制冷系统的工作性能。
同时本发明还提供一种空调制冷系统， 该系统包括压缩机、 热交换 器以及与所述压缩机或热交换器连接的贮液器， 所述贮液器为上面所述 的贮液器。 由于上述贮液器具有上述技术效果， 具有该贮液器的空调制 冷系统也应具有相应的技术效果。 附图说明
为了更清楚地说明本发明的技术方案， 下面将对本说明书所需要使 用的附图作筒单地介绍， 显而易见地， 下面描述中本发明的附图仅仅是 本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性 劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为一种相关的贮液器的结构示意图；
图 2为本发明第一种具体实施例提供的过滤筒的结构示意图； 图 3为图 2的 A-A向结构示意图；
图 4为本发明第一种具体实施例提供的贮液器的结构示意图； 图 5为本发明具体实施例提供的过滤盖的结构示意图；
图 6为图 5提供的过滤盖的 B-B向结构示意图；
图 7为图 2提供的过滤筒的 C-C向结构示意图；
图 8为图 3所示过滤筒的局部放大示意图；
图 9为本发明第二种具体实施例提供的贮液器的结构示意图； 图 10为本发明第三种具体实施例提供的贮液器的结构示意图； 图 11为图 9、 图 10所示贮液器的过滤筒的结构示意图；
图 12为图 11所示过滤筒的 D-D向示意图；
图 13为本发明第四种具体实施例提供的贮液器的结构的示意图； 图 14为图 13所示贮液器的 I部份的局部放大示意图；
图 15为图 13所示贮液器的 II部份的局部放大示意图；
图 16为图 13所示贮液器的过滤筒的结构示意图；
图 17为图 16所示过滤筒的 E-E向示意图；
图 18为本发明第五种具体实施方式贮液器的结构的示意图。
其中， 图中：
上器体 1、 干燥包 11、 分子筛 111、 下器体 2、 制冷剂进口 21、 第 一金属过滤网 22、 阻挡件 23、 凸点 24、 无纺布滤片 25、 第二金属过滤 网 26、 制冷剂出口 27、 第二器体 3、 第一连接口 31、 第二连接口 32、 过滤筒 33、 过滤部 331、 第一配合部 332、 第二配合部 333、 定位凸缘 334、 斜面 335、 环状密封突起 336、 定位凸部 34、 阻挡件 35、 第一内壁 部 36、 第二内壁部 37、 过滤盖 38、 基体 381、 过滤网 382、 0型密封圏 39、 第一器体 4、 干燥包 41、 分子筛 411。 具体实施方式
本发明的核心是提供一种贮液器， 该贮液器在保证自身过滤精度的 同时降低过滤流阻。 本发明的另一核心是提供一种具有上述贮液器的空 调制冷系统。
为了使本领域的技术人员更好地理解本发明的技术方案， 下面将结 合附图和具体实施方式对本发明作进一步的详细说明。
参见图 2-8, 贮液器包括第一器体 4、 第二器体 3、 和过滤筒 33 , 第 一器体 4为筒状结构， 第二器体 3在朝向第一器体的一端为开口结构； 过滤筒 33从朝向第一器体的开口一端装入第二器体 3后， 第二器体 3 与第一器体 4对接或插接后并通过焊接固定， 另外两者之间也可以通过 其它方式固定密封如螺纹连接或螺纹连接配合密封件实现密封。 第二器 体 3在远离第一器体 4的另一端设置有第一连接口 31和第二连接口 32, 第一器体 4与第二器体 3组成的内部腔体中设置有干燥包 41 ,干燥包 41 内具有分子筛 411。过滤筒 33上端的定位凸缘 334与第二器体 3内壁过 盈配合， 过滤筒 33下端具有斜面 335 , 该斜面 335与第二器体 3的内壁 组成液流腔，该液流腔通过过滤筒 33的外壁部与第二器体 3的内壁之间 的空间与过滤筒 33的上部空间连通； 另外过滤筒也可以不设置斜面， 而 通过其它形式形成流体流通通道如设置台阶部或弧面等等。 过滤筒 33 包括过滤部 331以及靠近第一器体的第一配合部 332和背向第一器体的 第二配合部 333 , 第一配合部 332和第二配合部 333可采用不同于过滤 部 331的材料连接于过滤部 331两端，且两者相连通。过滤筒 33装入第 二器体 3后，液流腔与第一连接口 31直接连通，第二配合部 333与第二 连接口 32直接相连通， 即过滤部 331的外部与第一连接口 31连通， 而 过滤部 331的内部通过第二配合部 333与第二连接口 32连通。 另外过滤筒 33的第一配合部 332的外壁部也可以与第二器体 3采用 过盈配合的连接方式，在制冷剂通过第一连接口 31进入液流腔后，制冷 剂只能通过过滤部 331进入过滤筒 33内，并通过第二配合部 333通向第 二连接口 32, 由此将被过滤。 此后， 一部分制冷剂将进一步进入第一器 体 4内，并由干燥包 41内的分子筛 411吸收其中的水分， 以避免制冷剂 中的过多水分在节流阀中造成冰堵现象；制冷剂可以通过第二连接口 32 流出贮液器。 通过上述结构， 本发明提供的贮液器使得制冷剂由第一连 接口 31流至第二连接口 32的过程中至少经过一次过滤， 从而将制冷剂 中的杂质截留在该贮液器内部， 达到过滤制冷剂的目的， 且过滤部的过 滤面积相对较大， 阻力较小。
通过上述描述可知， 相比于背景技术中提到的贮液器， 本发明提供 的贮液器将制冷剂的过滤部件由无纺布滤片改进为过滤筒 33 的过滤部 331 , 而该过滤部 331为柱面结构，其与制冷剂的有效截流面积大于背景 技术中的制冷剂出口与制冷剂的有效截流面积， 使得大部分制冷剂与过 滤部件的截流面积增大， 在保证贮液器的过滤精度的同时， 解决了采用 致密度过高的无纺布滤片所带来的流阻较大的弊端。 另一方面， 该贮液 器自身的流阻降低后，制冷剂中的杂质不易在过滤筒 33表面堆积，杂质 对过滤筒 33 的流通能力的影响有所减小， 进而保证制冷系统的工作性 能。
在实际生产或使用过程中， 制冷剂的流动方向可与上述过程相反， 即，制冷剂可以从第二连接口 32进入，通过第二配合部 333进入过滤筒 33内部，通过过滤筒 33过滤后通过过滤筒 33的外部与第二器体 3的内 壁部之间的空间，再通过液流腔， 制冷剂由第一连接口 31流出， 即制冷 剂首先进入过滤筒 33内部，通过过滤部 331的过滤后进入液流腔，并由 第一连接口 31流出该贮液器。 过滤部 331包括支撑架 3310及与支撑架 3310固定设置的过滤网 3311 ,支撑架包括轴向设置的第一肋条及周向设 置的第二肋条， 过滤网被第一肋条或第二肋条所固定， 或被第一肋条和 第二肋条所同时固定； 其中支撑架 3310可以是塑料， 通过注塑成型， 过 滤网 3311 在注塑时作为嵌件通过注塑一体嵌设固定。 而且第二配合部 333、 第一配合部 332也可以为与支撑架 3310—体注塑成型加工而成的 结构， 这样部件较少， 装配也相对方便。
另外，过滤筒 33的第一配合部 332的外壁并不是整个都与第二器体 3的内壁过盈配合，过滤筒 33在第一配合部 332及过滤筒下端具有定位 凸缘 334, 该定位凸缘 334沿过滤筒 33的轴向和周向分布， 过滤筒 33 通过定位凸缘 334与第二器体 3的内壁过盈配合而固定， 而第一配合部 332的外壁的其它部位与第二器体 3的内壁具有间隙或空间。 相比于过 滤筒 33直接与第二器体 3过盈配合， 上述连接方式中的定位凸缘 334 与第二器体 3的内壁的接触面积大大减小，从而可降低过滤筒 33与第二 器体 3之间的摩擦力， 进而减緩贮液器的安装过程中所出现的零部件磨 损， 以此延长该贮液器的工作寿命。 实际生产中， 定位凸缘 334通常为 对称设置如图 2、 图 3所示的 8个， 其在过滤筒 33的上端和下端分别均 匀分布 4个； 另外也可设置 6个，在过滤筒 33的上端和下端分别均匀分 布 3个。
另外，上述技术方案中，过滤筒 33与第二器体 3的连接方式可由过 盈配合替换为间隙配合， 具体地， 上述定位凸缘 334与第二器体 3呈小 间隙配合， 过滤筒 33通过位于第二器体 3内壁上的定位凸部 34定位而 固定， 而第二配合部 333则与第二器体 3的第二连接口 32密封连接。另 外为了保证制冷剂由第一连接口 31流至第二连接口 32或相反流动的过 程中至少经过一次过滤， 本实施方式中贮液器还设置有与第一配合部 332过盈配合固定的过滤盖 38 , 过滤盖 38与第一配合部 332的开口端 338过盈配合， 另外也可以通过压接等其它方式固定， 过滤盖 38装入第 一配合部 332的开口端 338后， 过滤盖 38与第一配合部 332的开口端 338的端面 330大致齐平或略低于端面 330;此时， 即使制冷剂经过第一 连接口 31后从过滤筒 33与第二器体 3之间的间隙流入第一器体 4内部， 该部分制冷剂需要流出该贮液器时， 还是要流过第一配合部 332上设置 的过滤盖 38 , 这样可防止制冷剂中的杂质泄漏， 从而完成该部分制冷剂 的过滤。该过滤盖 38可为结构较为筒单的过滤板，过滤板内部固定有过 滤网。
具体地， 过滤盖还可以是如图 5和图 6所示的结构， 图 5为本发明 具体实施例提供的过滤盖的结构示意图， 图 6为图 5的 B-B向结构示意 图。过滤盖 38包括金属制的基体 381以及嵌设于基体 381上的金属制的 过滤网 382。 相对于上述过滤板， 此种结构的过滤盖 38通过基体 381实 现过滤网 382的固定， 显著提高了过滤盖 38与过滤筒 33的连接强度。 另外， 上述基体 381还可以采用塑料基体， 而过滤网 382则采用尼龙过 滤网， 基体 381 与过滤网 382通过注塑的方式制成。 此时， 过滤盖 38 中的过滤网 382具有较高的致密度， 使得该贮液器的过滤能力更高。
上述结构既能够保证贮液器的过滤功能的顺利实现， 又可进一步降 低过滤筒 33和第二器体 3在安装过程中产生的磨损。 而定位凸缘 334 不仅可以在过滤筒 33 的安装中起到一定的导向作用， 又可防止过滤筒 33在第二器体 3中发生过大的倾斜而造成装配不平整，从而保证过滤筒 33的工作可靠性。 这样可以保证制冷剂由第一连接口 31流至第二连接 口 32或相反流动的过程中至少经过一次过滤，且装配时摩擦阻力相对较 小。
另外， 在过滤筒 33与干燥包 41之间还可以设置阻挡件 35 , 阻挡件 35通过定位凸部 34轴向限位， 以防止过滤筒 33在运输或震动时可能产 生的偏斜或轴向移动； 具体装配时， 将过滤筒 33装配完成后， 装入阻挡 件 35 , 然后再压接第二器体的外壁部或打点使之内凸形成定位凸部 34。 上述阻挡件 35上所具有的若干个通孔可保证制冷剂正常流通， 同时， 由 阻挡件 35固定过滤筒 33可避免过滤筒 33直接与定位凸部 34连接后受 到作用力而产生形变；同时可完全避免干燥包 41落入过滤筒或 4氏接到过 滤盖的可能性，从而保证正常的过滤能力。上述阻挡件 35优选为金属阻 挡件。 显然， 阻挡件 35亦可延长该贮液器的工作寿命。
下面介绍另外一种具体实施方式， 如图 9、 图 11、 图 12所示， 这是 本发明第二种具体实施例提供的贮液器的结构示意图。 该实施例中过滤 筒 33a的第一配合部 332a与第二器体 3a的内壁之间还设置有密封件， 具体地， 是在第一配合部 332a设置有一个容纳密封件的凹槽 339 , 在凹 槽 339中设置有 0型密封圏 39作为密封件，使第一配合部 332a与第二 器体 3a的内壁之间能良好地密封，这样使得制冷剂进入液流腔后只能由 过滤部 331进入过滤筒 33的内部或相反流动时只能由过滤部 331流到液 流腔，从而能将制冷剂中的杂质有效地过滤。相较于设置过滤盖 38的方 式， 上述密封件使得几乎全部的制冷剂都与过滤部 331直接作用， 而过 滤部 331的面积显然比过滤盖 38的面积大， 这样， 就无需设置过滤盖。
在上述方案的基础上，为了便于过滤筒 33和密封件的安装，第二器 体 3a的内壁包括与密封件接触的第一内壁部 36以及承接于第一内壁部 36上端的第二内壁部 37 ,第一内壁部 36的内径小于第二内壁部 37的内 径， 且第一内壁部 36与第二内壁部 37之间光滑过度以作为装配的导向 部， 如设置斜度或弧形实现光滑过度的导向。 装配时， 首先将密封件安 装到过滤筒 33a上， 然后将两者装入内径较大的第二内壁部 37 , 继续安 装使得两者与内径较小的第一内壁部 36配合，以达到密封件的压缩量要 求， 保证过滤筒 33a与第二器体 3a的良好密封。 显然， 密封件在安装过 程中不会与第二内壁部 37接触， 其向第一内壁部 36靠近的过程中与第 二器体 3a之间的摩擦力接近于零， 而只是在装配到第一内壁部 36时接 触， 从而有效减少了密封件在安装时出现磨损， 保证其工作寿命。 即上 述第二器体 3a采用壁厚不等的结构形式，这一结构可通过冷挤压或其他 机械加工的方式实现。
图 10为本发明第三种具体实施例提供的贮液器的结构示意图。该实 施例与上述第二实施例的主要区别在于贮液器还包括与过滤筒相抵接的 阻挡件 35 , 阻挡件 35可位于第二内壁部 37位置， 通过定位凸部 34使 其在轴向实现定位或限位。另外阻挡件 35与过滤筒也可以不相 4氏接， 而 呈间隙设置，以阻止过滤筒向第一器体方向移动且阻止干燥包 41进一步 向过滤筒方向移动。 在前述方案中， 过滤筒 33上方设置阻挡件 35以防 止干燥包落入过滤筒从而延长贮液器的寿命， 同理地， 在第二内壁部 37 上设置同样结构的阻挡件 35亦可延长贮液器的寿命。
为了进一步扩大该贮液器对制冷剂的截流面积， 可以将第二配合部
333与过滤部 331制成一体式结构， 同时第二配合部 333也由滤材制成。 制冷剂与过滤筒 33接触后， 既可由过滤部 331进出过滤筒 33 , 也可由 第二配合部 333的过滤网进出。显然，制冷剂与过滤筒 33的截流面积进 一步提升， 使得该贮液器的流阻降低。
另外在上述技术方案中，第二连接口 32可以呈台阶状结构，第二配 合部 333有部份呈管状伸入第二连接口 32,第二配合部 333在与第二连 接口 32配合的管状部位的外表面还设置有环状密封突起 336,该环状密 封突起 336可与第二连接口 32的内壁部紧配，以保证制冷剂不会从第二 配合部 333与第二连接口 32之间通过；另外该环状密封突起 336也可以 具有一定的弹性，在安装过滤筒 33时，施加于第二配合部 333上的外力 使环状密封突起 336发生形变， 这一形变将增大第二配合部 333与第二 器体的内壁之间的摩擦力， 从而保证第二配合部 333的良好密封。 优选 地，上述环状密封突起 336可设置为弧形，以此形成更加均匀的摩擦力。 在过滤筒的第二配合部 333部位还可以设置一个台阶部 337替代斜面， 以作为与第二器体之间轴向的定位部， 保证贮液器装配的一致性。
下面介绍第四种具体实施方式， 如图 13-图 17所示。 该实施方式与 上面介绍的实施方式的主要区别在过滤筒与第二器体的配合密封结构。 过滤筒 33b为塑料材料经注塑加工而成，在第一配合部 332b设置有从其 基部 3302向外的环状密封片 3300,环状密封片 3300与过滤筒 33b—体 注塑而成， 第一配合部 332b还设置有定位部 3303 , 定位部 3303可以是 环状结构， 另外也可以是几个弧形的结合实现定位； 环状密封片 3300 大于第一配合部 332b其它部位， 即环状密封片 3300大于定位部 3303; 在装配时，环状密封片 3300与第二器体 3b的第一内壁部 36相抵触而产 生弹性变形， 两者通过贴合配合而密封； 装配后的结构如图 13所示， 这 样， 制冷剂就会从过滤筒 33b的过滤部 331进出， 都经过过滤网 3311 的过滤。环状密封片 3300与第二器体内壁部贴合， 而过滤筒 33b的其它 部位与第一器体 3b的内壁呈间隙配合， 这样， 装配相对方便， 装配时的 摩擦阻力也相对较小，并且环状密封片 3300与过滤筒通过注塑一体成型 加工而成， 也减少了装配零件。 同样地， 本实施方式中在过滤筒 3b与干 燥包 41之间也设置有阻挡件 35 , 其作用同上， 这里不再复述。
下面介绍第五种具体实施方式，如图 18所示。该实施方式与上面介 绍的第四种实施方式的主要区别是没有设置阻挡件，过滤筒 33b 的固定 是采用在第二器体上打点或滚槽的方式固定过滤筒 33b 的定位部 3303 而固定， 另外在第一配合部 332b的内部设置了一个阻止干燥包 41落入 的金属挡网 35a,金属挡网 35a与第一配合部 332b的内孔部之间可以采 用紧配的方式固定。 这样可以减少贮液器轴向方向的长度。
在上述各技术方案中，构成过滤部 331的过滤网 3311的滤材可为金 属过滤介质如不锈钢丝网， 也可为非金属过滤介质， 如选用尼龙材质。 与其他滤材相比， 尼龙作为一种合成纤维， 其过滤能力更好， 且其具有 较突出的拉伸强度、 表面硬度、 耐磨性、 耐化学性等特性， 使得尼龙制 的过滤网 3311具有较好的综合性能。
在上述各技术方案中，定位凸部 34可以为通过打点形成的若干个分 散的向内突出的凸点， 也可为通过滚槽的方式形成向内的环状凸起。 打 点和滚槽的具体加工设备不同， 两者形成的定位凸部 34施加于过滤筒 33的力度大小亦有所不同， 具体加工时， 可根据贮液器的工作性能以及 加工成本等要求来确定定位凸部 34的加工方法。
在上述各技术方案中， 密封件可为盘根或密封圏等， 如 0型密封圏
39。 0型密封圏 39是一种在工程设备中常见的密封件，其具有较优的弹 性， 在过滤筒 33的安装过程中将受到挤压， 进而产生较明显的形变，从 而对第二器体的内壁施加较大的弹性力， 其密封效果较为突出。
本发明提供的空调制冷系统包括压缩机以及与压缩机连接的贮液 器，该贮液器为上述任一种贮液器。 由于上述贮液器具有上述技术效果， 具有该贮液器的空调制冷系统也应具有相应的技术效果， 此处不再作详 细介绍。
以上对本发明所提供的空调制冷系统及其贮液器进行了详细介绍。 施例的说明只是用于帮助理解本发明的方法及其核心思想。 本说明书中 提到的一些方位词如上、 下等是为了说明清楚， 而不应视作对本发明的 限制。 应当指出， 对于本技术领域的普通技术人员来说， 在不脱离本发 明原理的前提下， 还可以对本发明进行若干改进和修饰， 如进行组合或 替代， 这些改进和修饰也落入本发明权利要求的保护范围内。

Claims

权 利 要 求
1、 一种贮液器， 包括第二器体， 所述第二器体具有第一连接口和第 二连接口， 其特征在于， 还包括与所述第二器体内壁配合以形成液流腔 的过滤筒， 所述过滤筒包括具有过滤能力的过滤部以及设置于所述过滤 部两端， 且相连通的第一配合部和第二配合部， 所述第二配合部和所述 液流腔分别与所述第一连接口和所述第二连接口相连通， 制冷剂由所述 第一连接口流至所述第二连接口的过程中至少经过一次过滤。
2、 一种贮液器， 包括第一器体、 第二器体， 第二器体在朝向所述第 一器体的一端为开口结构， 第二器体在背向所述第一器体的另一端具有 第一连接口和第二连接口， 其特征在于， 所述贮液器还包括过滤筒， 过 滤筒包括第一配合部、 第二配合部、 及位于中段的过滤部； 第一配合部 与所述第二器体的内壁配合， 过滤部与所述第二器体的内壁之间具有供 制冷剂流通的空间， 所述第二配合部与所述第二器体设置第一连接口的 这一部位之间具有供制冷剂流通的空间， 所述第二配合部与所述第二连 接口连接， 过滤部与所述第二器体的内壁之间的空间与所述第一连接口 连通， 过滤部的内部通过第二配合部与第二连接口连通， 制冷剂在所述 第一连接口与所述第二连接口之间流动的过程中至少经过一次过滤。
3、 按照权利要求 2所述的贮液器， 其特征在于， 所述第二配合部至 少有部份呈管状伸入所述第二连接口， 所述第二配合部在与第二连接口 的内壁部配合部位的外表面设置有环状密封突起， 环状密封突起与所述 第二连接口的内壁部紧配， 以保证制冷剂不会从第二配合部的外部与第 二连接口之间的空间通过。
4、 按照权利要求 2所述的贮液器， 其特征在于， 所述第一配合部的 外壁部至少有部份与所述第二器体的内壁部之间紧配合或通过环状密封 件实现紧配合。
5、 按照权利要求 4所述的贮液器， 其特征在于， 所述第二器体包括 与过滤筒的第一配合部配合的第一内壁部以及靠近所述第一器体的第二 内壁部， 第一内壁部的内径小于第二内壁部的内径且第一内壁部与第二 内壁部之间光滑过度， 第一配合部的外壁部与所述第一内壁部呈环状紧 配合， 以防止制冷剂从第一配合部的外壁部与所述第二器体的内壁部之 间通过。
6、 按照权利要求 4所述的贮液器， 其特征在于， 所述第一配合部的 外壁部并不是整个都与第二器体的内壁部过盈配合， 第一配合部沿周向 设置有多个定位凸缘， 过滤筒通过定位凸缘与第二器体的内壁过盈配合 而固定， 而第一配合部的外壁的其它部位与第二器体的内壁具有间隙， 所述贮液器在第一配合部还固定设置有过滤盖， 过滤盖包括基体和通过 所述基体固定的过滤网。
7、 按照权利要求 6所述的贮液器， 其特征在于， 所述第二配合部沿 周向也设置有多个定位凸缘， 而第二配合部的外壁的其它部位与第二器 体的内壁具有一定的空间或间隙以供制冷剂流通； 且第二配合部与所述 第二器体设置第一连接口的部位之间具有一定的空间以供制冷剂流通。
8、 按照权利要求 4所述的贮液器， 其特征在于， 所述过滤筒的第一 配合部与所述第二器体的内壁之间具有间隙， 所述过滤筒的第一配合部 与所述第二器体的内壁之间设置有弹性密封件， 第一配合部设置有一个 容纳密封件的凹槽， 在凹槽设置有环状的弹性密封件， 使第一配合部与 第二器体的内壁之间能密封， 以防止制冷剂从第一配合部的外壁部与所 述第二器体的内壁部之间通过。
9、 按照权利要求 2所述的贮液器， 其特征在于， 所述过滤筒的过滤 部包括支撑架及与支撑架固定设置的过滤网， 支撑架包括轴向设置的第 一肋条及周向设置的第二肋条， 过滤网被第一肋条和或第二肋条所固定。
10、 按照权利要求 9所述的贮液器， 其特征在于， 所述过滤部的过 滤网为尼龙过滤网， 支撑架为热塑性塑料材料， 两者通过注塑成型固定 在一起。
11、 按照权利要求 10所述的贮液器， 其特征在于， 所述过滤筒为热 塑料材料经注塑加工而成， 过滤网通过塑料固定； 且第一配合部至少设 置有一个从基部向外的环状密封片， 环状密封片为过滤筒注塑时一体注 塑而成， 第一配合部还设置有定位部， 环状密封片大于第一配合部其它 部位， 环状密封片与所述第二器体的内壁部接触配合。
12、 按照权利要求 10所述的贮液器， 其特征在于， 所述过滤筒的第 二配合部、 第一配合部也为热塑性塑料材料， 与所述过滤部一体注塑成 型加工而成， 所述尼龙过滤网在注塑时作为嵌件通过注塑固定。
13、 按照权利要求 12所述的贮液器， 其特征在于， 所述第二配合部 也固定有过滤网， 制冷剂在所述第一连接口与第二连接口之间流动时可 通过过滤部或第二配合部实现过滤。
14、 按照权利要求 2所述的贮液器， 其特征在于， 所述第一器体为 开口朝向所述第二器体的筒状结构， 所述第一器体与第二器体组成的内 部腔体中设置有干燥包， 干燥包内具有分子筛， 在所述过滤筒与干燥包 之间设置有阻挡件， 阻挡件通过所述第二器体或过滤筒的第一配合部固 定； 阻挡件设置有若干个通孔以保证制冷剂的流通。
15、 按照权利要求 14所述的贮液器， 其特征在于， 所述阻挡件通过 第二器体上设置的定位凸部实现轴向限位， 所述定位凸部是在过滤筒装 配进第二器体、 并装入阻挡件， 然后再压接第二器体的外壁部或打点使 之内凸形成定位凸部， 以实现对阻挡件的限位。
16、 按照权利要求 14所述的贮液器， 其特征在于， 所述阻挡件是在 第一配合部的内部固定的金属挡网， 金属挡网设置有若干通孔； 过滤筒 与所述第二器体通过定位凸部固定， 所述定位凸部是在将过滤筒装配进 第二器体后， 然后再压接第二器体的外壁部或打点使之内凸形成定位凸 部。
17、 按照权利要求 3所述的贮液器， 其特征在于， 所述过滤筒的过 滤部包括支撑架及与支撑架固定设置的过滤网， 支撑架包括轴向设置的 第一肋条及周向设置的第二肋条， 过滤网被第一肋条和或第二肋条所固 定； 且所述过滤部的过滤网为尼龙过滤网， 支撑架为热塑性塑料材料， 两者通过注塑成型固定在一起。
18、 按照权利要求 4所述的贮液器， 其特征在于， 所述过滤筒的过 滤部包括支撑架及与支撑架固定设置的过滤网， 支撑架包括轴向设置的 第一肋条及周向设置的第二肋条， 过滤网被第一肋条和或第二肋条所固 定； 且所述过滤部的过滤网为尼龙过滤网， 支撑架为热塑性塑料材料， 两者通过注塑成型固定在一起。
19、 一种贮液器的制造方法， 贮液器包括第一器体、 第二器体， 第 二器体在朝向所述第一器体的一端为开口结构， 第二器体在背向所述第 一器体的另一端具有第一连接口和第二连接口， 所述贮液器还包括过滤 筒， 过滤筒包括第一配合部、 第二配合部、 及位于中段的过滤部； 第一 配合部与所述第二器体的内壁配合， 过滤部与所述第二器体的内壁之间 具有供制冷剂流通的空间， 所述第二配合部与所述第二连接口配合连接， 过滤部与所述第二器体的内壁之间的空间与所述第一连接口连通， 过滤 部的内部通过第二配合部与第二连接口连通， 制冷剂在所述第一连接口 与所述第二连接口之间流动的过程中至少经过一次过滤， 所述贮液器的 制造方法包括以下制造步骤：
第一器体、 第二器体的加工成型；
过滤筒的组装： 将过滤网裁成预定尺寸并卷绕成筒状， 然后将卷绕 固定好的过滤网置于注塑模具上注塑得到过滤筒；
将过滤筒装入第二器体；
压接第二器体的外壁部或打点使之内凸形成定位凸部；
将第一器体与组装完成的第二器体组件装配， 使第一器体、 第二器 体对接或插接后进行焊接， 使两者之间密封固定。
20、 一种空调制冷系统， 包括压缩机、 热交换器以及与所述压缩机 或热交换器连接的贮液器， 贮液器包括第一器体、 第二器体， 第二器体 在朝向所述第一器体的一端为开口结构， 第二器体在背向所述第一器体 的另一端具有第一连接口和第二连接口， 其特征在于， 所述贮液器还包 括过滤筒， 过滤筒包括第一配合部、 第二配合部、 及位于中段的过滤部； 第一配合部与所述第二器体的内壁配合， 过滤部与所述第二器体的内壁 之间具有供制冷剂流通的空间， 所述第二配合部与所述第二连接口连接， 过滤部与所述第二器体的内壁之间的空间与所述第一连接口连通， 过滤 部的内部通过第二配合部与第二连接口连通， 制冷剂在所述第一连接口 与所述第二连接口之间流动的过程中至少经过一次过滤。
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