Drying filter of refrigerator refrigeration cycle system

Abstract

The invention relates to the field of drying filters, in particular to a drying filter of a refrigerator refrigeration cycle system, which comprises a copper pipe shell, a filter screen cover is fixed at one end in the copper pipe shell, the filter screen cover is used for filtering impurities in a refrigerant, the filter screen cover is in a circular truncated cone shape, one end of the filter screen cover is communicated and fixed with a three-way pipe, and the other end of the filter screen cover is communicated with the three-way pipe. The two ends of the three-way pipe are both fixedly connected with first bent pipes in a communicating mode, one end of each first bent pipe is detachably fixedly connected with a connecting pipe in a communicating mode, and a filth blockage prompting mechanism is arranged in the connecting pipe. According to the air conditioner, a traditional round blocky filter screen fixed to one end of the copper pipe shell is arranged to be the hopper-shaped filter screen cover, impurities in a refrigerant can be filtered out, and the impurities at different positions on the filter screen cover can be gathered to the middle of the filter screen cover through the filtering and guiding functions of the filter screen cover; and then the filter screen is conveyed into the bent pipe I and the connecting pipe through the three-way pipe, so that the filth blockage problem of the filter screen is effectively prevented.

Description

Technical Field

[0001] The invention relates to the field of drying filters, in particular to a drying filter of a refrigerator refrigeration cycle system. Background Art

[0002] The dry filter in the refrigerator refrigeration cycle system is one of the important auxiliary components of the refrigeration system. It is mainly used to remove residual moisture and filter impurities in the refrigeration system to maintain the normal operation of the refrigeration system. One of the common failures of the dry filter is "dirty blockage", which may be caused by moisture in the refrigeration system, dirty refrigeration oil, poor welding, oxide scale shedding on the inner wall of the pipe, mechanical wear impurities caused by the long-term operation of the compressor, etc. In order to prevent the occurrence of "dirty blockage", filter drying structures such as filters, molecular sieves, and activated carbon are generally installed inside the copper tube shell of the dry filter. When the filter filters more impurities, the filter is not conducive to the smooth flow of refrigerant through the filter, and the flow of refrigerant in the system will be blocked, thereby affecting the refrigeration effect. At present, most dry filters are not conducive to prompting users that the filter is "dirty and blocked". When the user is cleaning the impurities on the filter dryer, the dry filter cannot continue to allow the refrigerant to filter and flow. Summary of the invention

[0003] The object of the present invention is to provide a drying filter of a refrigerator refrigeration cycle system. By setting the traditional circular block filter fixed at one end of the copper tube shell into a hopper-shaped filter cover, it can not only filter the impurities in the refrigerant, but also make use of the filtering and guiding effect of the filter cover to make the impurities at different positions on the filter cover gather to the middle of the filter cover, and then transport them to the elbow and the connecting pipe through the three-way pipe, effectively preventing the problem of dirty filter blockage, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A drying filter of a refrigerator refrigeration cycle system, comprising: Copper tube shell; A filter cover is fixed at one end inside the copper tube shell and is used to filter impurities in the refrigerant. The filter cover is in the shape of a truncated cone, and one end of the filter cover is connected and fixed with a three-way pipe; Elbow pipes 1, two in number, are respectively connected and fixed to both ends of the tee pipe; There are two connecting pipes, one end of which is detachably connected and fixed to a corresponding elbow pipe, and a dirt and blockage prompting mechanism is arranged inside the connecting pipe; The dirty blockage prompt mechanism comprises a connecting shaft and a rack, a filter cylinder 1 is sleeved and fixed on the outer side of the connecting shaft, the top end of the connecting shaft is meshed and driven with the rack, and a detection box is fixed on the bottom end of the connecting shaft; Bend pipe 2, the number is two, one end of the bend pipe 2 is detachably connected and fixed to the connecting pipe at the corresponding position, and a filter cylinder 2 is arranged inside the other end of the bend pipe 2; There are two return pipes, the top of which is connected and fixed to the bottom of the second elbow at the corresponding position; The drying mechanism is arranged inside one end of the copper tube shell and is used to remove water vapor, absorb odors and protect the refrigeration system.

[0005] Furthermore, two ends of the copper tube shell are connected and fixed with a first joint tube and a second joint tube respectively, and the copper tube shell is filled with activated carbon.

[0006] Furthermore, a fixing flange which is detachably fixed to the connecting pipe is fixed on the top of the curved pipe 1, and a solenoid valve 1 is installed in series on the bottom end of the curved pipe 1.

[0007] Furthermore, the outer side of the connecting pipe is connected and fixed with a filling pipe, and a valve is installed inside the filling pipe.

[0008] Furthermore, activated carbon particles are placed inside the filter cylinder 1, a plurality of notches are formed in a ring shape at equal angles on the outside of the filter cylinder 1, and a gear meshing with a rack is fixed on the top of the connecting shaft.

[0009] Furthermore, a detection box rotatably connected to the inside of the connecting pipe is provided at the bottom end of the connecting shaft, and a displacement sensor is fixedly installed inside the detection box.

[0010] Furthermore, the second curved pipe has an internal thread screwed to the second filter cylinder, the second filter cylinder extends to the inside of the return pipe at a corresponding position, and a gap is reserved between the outside of the second filter cylinder and the inside of the return pipe.

[0011] Furthermore, a connecting flange 1 is fixed to the outer side of the bottom of the second curved pipe, a connecting flange 2 is fixedly connected to the top of the return pipe, and the connecting flange 1 and the connecting flange 2 are detachably fixedly connected by bolts.

[0012] Further, the drying mechanism comprises: The mesh plate is fixedly connected to the inner side of the copper tube shell; A plurality of mesh bags, each mesh bag containing a molecular sieve; The sealing cover is screwed and connected to the copper tube shell.

[0013] Furthermore, the plurality of mesh bags are arranged between the mesh plate and the blocking cover, a mesh hole is provided in the middle of the blocking cover, and a toggle rod is fixed in the middle of the blocking cover.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By fixing a truncated cone-shaped filter cover at one end inside the copper tube shell, the filter cover can filter impurities in the refrigerant when the refrigerant passes through the filter cover. The shape characteristics of the filter cover make the impurities filtered inside flow to the middle of the filter cover with the refrigerant, and then flow away with the three-way pipe and the elbow, preventing the filter cover from being blocked by large areas of impurities and affecting the smooth flow of refrigerant on the filter cover.

[0015] 2. A filter cylinder 1 is arranged in the middle of the connecting pipe, and a plurality of notches are opened at equal angles in a circular shape on the outside of the filter cylinder 1. The refrigerant transported from the middle of the filter cover through the elbow pipe 1 to the inside of the connecting pipe will bring impurities to the notches on the outside of the filter cylinder 1. The refrigerant passes through the filter cylinder 1, and the impurities are intercepted at the notches. As the impurities filtered on the outside of the filter cylinder 1 gradually increase, the filter cylinder 1 is gradually blocked. The blocked filter cylinder 1 is pushed toward the elbow pipe 2 under the thrust of the refrigerant flow. During the movement of the filter cylinder 1 along the connecting pipe toward the elbow pipe 2, the connecting shaft moves with the detection box, and the displacement sensor inside the detection box changes. The user can judge that there are more impurities filtered on the filter cylinder 1 according to the change in the displacement sensor indication, so as to conveniently remind the user to clean the impurities in the refrigerant.

[0016] 3. By fixing a gear on the top of the connecting shaft, when the filter cylinder 1 moves with the connecting shaft toward the elbow pipe 2, the gear on the connecting shaft meshes and rolls on the rack, so that the connecting shaft rotates with the filter cylinder 1, and the impurities intercepted on the outside of the filter cylinder 1 are transferred to the direction that caters to the flow of the refrigerant, so that the impurities can be transported to the filter cylinder 2 of the elbow pipe 2 for buffering with the help of the flow of the refrigerant.

[0017] 4. Two groups of filtering mechanisms are arranged on the outside of the copper tube shell, each group of filtering structures includes an elbow pipe 1, a connecting pipe, an elbow pipe 2 and a return pipe. When the filter cylinder 2 in the elbow pipe 2 of a group of filtering mechanisms intercepts impurities, the solenoid valve 1 on the elbow pipe 1 of the group of filtering mechanisms and the solenoid valve 2 on the return pipe can be closed, and then the elbow pipe 2 can be removed from the return pipe and the connecting pipe to facilitate the removal of impurities in the filter cylinder 2; Before cleaning one set of filtering mechanisms, the solenoid valve 1 on the bend pipe 1 of another set of filtering mechanisms and the solenoid valve 2 on the return pipe can be opened, so that the impurities intercepted in the refrigerant are filtered into the filter cylinder 2 of the other set, so that during the process of cleaning the refrigerant impurities, the refrigerant inside the copper tube shell can continue to flow through the dryer, so that the refrigerant can be filtered and flowed at the same time during the process of cleaning the impurities in the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the copper tube shell in the present invention; Figure 3 It is a schematic diagram of the structure of the filter screen and the elbow in the present invention; Figure 4 It is a schematic diagram of the structure of the elbow pipe 1, the connecting pipe, the elbow pipe 2, and the return pipe in the present invention; Figure 5 It is a schematic diagram of the internal structure of the connecting pipe in the present invention; Figure 6 It is a schematic diagram of the internal structure of the filter cylinder of the present invention; Figure 7 It is a schematic diagram of the structure of the second elbow pipe, the return pipe, and the second filter cylinder in the present invention; Figure 8 It is a schematic diagram of the drying mechanism structure in the present invention.

[0019] In the figure: 100, copper tube shell; 110, joint pipe one; 120, joint pipe two; 130, activated carbon particles; 200, filter cover; 210, three-way pipe; 300, elbow one; 310, fixing flange; 320, solenoid valve one; 400, connecting pipe; 410, filling pipe; 500, dirty blockage prompt mechanism; 510, connecting shaft; 511, gear; 520, filter cylinder one; 521, notch; 530, rack; 540, detection box; 600, elbow two; 610, filter cylinder two; 620, connecting flange one; 700, reflux pipe; 710, connecting flange two; 720, solenoid valve two; 800, drying mechanism; 810, mesh plate; 820, mesh bag; 830, blocking cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] For example, see Figure 1-8In an embodiment of the present invention, a drying filter of a refrigerator refrigeration cycle system includes a copper tube shell 100, a filter cover 200 is fixed at one end inside the copper tube shell 100, and the filter cover 200 is used to filter impurities in the refrigerant. The filter cover 200 has a truncated cone shape, and one end of the filter cover 200 is connected and fixed with a three-way pipe 210, and both ends of the three-way pipe 210 are connected and fixed with an elbow 300, and one end of the elbow 300 is detachably connected and fixed with a connecting pipe 400, and a dirty blockage prompting mechanism 500 is arranged inside the connecting pipe 400, and the dirty blockage prompting mechanism 500 includes a connecting shaft 510 and a rack 530, and the connecting shaft 5 A filter cylinder 520 is fixedly sleeved on the outer side of 10, the top of the connecting shaft 510 is meshed with the rack 530 for transmission, the bottom of the connecting shaft 510 is fixed with a detection box 540, the end of the connecting pipe 400 away from the bend pipe 300 is connected and fixed with a bend pipe 600, one end of the bend pipe 600 is detachably connected and fixed with the connecting pipe 400 at the corresponding position, the other end of the bend pipe 600 is internally provided with a filter cylinder 610, the bottom end of the bend pipe 600 is connected and fixed with a return pipe 700, and a drying mechanism 800 is internally provided at one end of the copper tube shell 100, and the drying mechanism 800 is used to remove water vapor, absorb odor and protect the refrigeration system.

[0022] Specifically, by setting the circular block filter that is traditionally fixed at one end of the copper tube shell 100 into a hopper-shaped filter cover 200, not only can the impurities in the refrigerant be filtered, but the impurities at different positions on the filter cover 200 can also be gathered in the middle of the filter cover 200 with the help of the filtering and guiding effect of the filter cover 200, and then transported to the elbow 300 and the connecting pipe 400 through the three-way pipe 210, effectively preventing the problem of dirty filter blockage, and the impurities transported to the connecting pipe 400 by the refrigerant are intercepted by the filter cylinder 520, and the filter cylinder 520 intercepted with a large amount of impurities moves toward the direction of the elbow 600 with the flow of the refrigerant. During the movement, the pressure sensor at the bottom of the filter cylinder 520 is displaced, and the change in the indication of the pressure sensor prompts the user that the impurities need to be cleaned, which is convenient for the user to clean the impurities filtered in the refrigerant in time.

[0023] like Figure 2 As shown, in this embodiment, the two ends of the copper tube shell 100 are respectively connected and fixed with a joint pipe 110 and a joint pipe 2 120, and the inside of the copper tube shell 100 is filled with activated carbon 130. The joint pipe 110 and the joint pipe 2 120 are both existing technical structures and are used to be connected to the pipeline of the refrigeration cycle system. The activated carbon 130 further improves the filtering effect and can absorb odor.

[0024] like Figure 2-4 As shown, in this embodiment, a fixing flange 310 detachably fixed to the connecting pipe 400 is fixed to the top of the curved pipe 300, and a solenoid valve 320 is installed in series at the bottom end of the curved pipe 300.

[0025] In this embodiment, the elbow 300 and the connecting pipe 400 are detachably mounted and fixed together, and the solenoid valve 320 is closed when it is necessary to clean the impurities inside the elbow 600 to prevent the refrigerant from flowing to the outside through the elbow 300.

[0026] like Figure 4 As shown, in this embodiment, the outer side of the connecting pipe 400 is connected and fixed with a filling pipe 410 , and a valve is installed inside the filling pipe 410 .

[0027] In this embodiment, during the process of cleaning impurities in the filter cylinder 2 610 on the bend pipe 2 600, it is necessary to close the solenoid valve 1 320 on the bend pipe 1 300 and the solenoid valve 2 720 on the return pipe 700, and then remove the bend pipe 2 600, which will allow the refrigerant remaining in the bend pipe 2 600 to flow away. Subsequently, after cleaning the impurities in the filter cylinder 2 610, the bend pipe 2 600 is reinstalled between the return pipe 700 and the connecting pipe 400, the lost refrigerant can be injected into the connecting pipe 400 through the filling pipe 410 for standby use, so that the next time the bend pipe 1 300, the connecting pipe 400 and the bend pipe 2 600 are used to supply refrigerant to flow and filter impurities again, the refrigerant can be replenished into the refrigeration system.

[0028] like Figure 5 As shown, in this embodiment, activated carbon particles are placed inside the filter cylinder 520, and a plurality of notches 521 are formed in a circular shape at equal angles on the outside of the filter cylinder 520. A gear 511 meshing with the rack 530 is fixed to the top of the connecting shaft 510.

[0029] In this embodiment, when the refrigerant passes through the filter cartridge 520, it will pass through the activated carbon particles, thereby improving the purification effect of the refrigerant. The multiple notches 521 are convenient for intercepting impurities transported from the elbow 300. Under the thrust of the refrigerant flow, the dirty and blocked filter cartridge 520 will move along the rack 530, and the gear 511 will mesh and rotate on the rack 530, so that the surface side of the filter cartridge 520 that intercepts impurities will be transferred to the direction that caters to the flow of the refrigerant, so that the filter cartridge 520 can be flushed and cleaned with the help of the flow force of the refrigerant.

[0030] like Figure 5 As shown, in this embodiment, rectangular receiving grooves are opened at the upper and lower positions inside the connecting tube 400, and the two receiving grooves are used to store the rack 530 and the detection box 540 respectively. The rectangular receiving grooves are opened towards the inside of the connecting tube 400 with sliding grooves to facilitate the movement of the connecting shaft 510.

[0031] like Figure 5 As shown, in this embodiment, a detection box 540 rotatably connected to the inside of the connecting tube 400 is rotatably disposed at the bottom end of the connecting shaft 510 , and a displacement sensor is fixedly installed inside the detection box 540 .

[0032] In this embodiment, the filter cylinder 520 intercepting impurities will move along the connecting tube 400, thereby causing the connecting shaft 510 to move with the detection box 540. The movement of the detection box 540 will cause the displacement sensor value to change, and based on the changed value, it can be judged that the connecting tube 400 contains more impurities.

[0033] like Figure 7 As shown, in this embodiment, the interior of the second elbow 600 is provided with an internal thread that is screwed together with the second filter cylinder 610. The second filter cylinder 610 extends to the inside of the return pipe 700 at a corresponding position, and a gap is reserved between the outside of the second filter cylinder 610 and the inside of the return pipe 700.

[0034] The second filter cylinder 610 is screwed together with the second elbow 600 to facilitate disassembly of the second filter cylinder 610 to clean the impurities inside it. The gap allows the refrigerant flowing to the position of the second filter cylinder 610 to be re-injected into the connecting pipe 400 through the return pipe 700.

[0035] like Figure 4 As shown, in this embodiment, a connecting flange 1 620 is fixed to the outer side of the bottom of the second bend pipe 600, and a connecting flange 2 710 is fixedly connected to the top of the return pipe 700. The connecting flange 1 620 and the connecting flange 2 710 are detachably fixedly connected by bolts, so that the second bend pipe 600 fixed on the return pipe 700 can be removed.

[0036] Embodiment 2, based on embodiment 1, in order to change the position of the molecular sieve, the molecular sieve at the saturated position is replaced.

[0037] like Figure 8 As shown, in this embodiment, the drying mechanism 800 includes a mesh plate 810 fixedly connected to the inner side of the copper tube shell 100 and a sealing cover 830 screwed together with the copper tube shell 100, a plurality of mesh bags 820 are arranged between the sealing cover 830 and the mesh plate 810, the mesh bags 820 contain molecular sieves, and the plurality of mesh bags 820 are arranged between the mesh plate 810 and the sealing cover 830, a mesh hole is opened in the middle of the sealing cover 830, and a toggle rod is fixed in the middle of the sealing cover 830.

[0038] In this embodiment, by designing a complete molecular sieve as multiple separate molecular sieves contained in mesh bags 820, it is convenient to replace the parts with reduced use effect separately, which not only avoids material waste caused by overall replacement, but also avoids the use of saturated molecular sieves on the molecular sieve affecting the subsequent drying and filtration effect. During the replacement of the molecular sieve, the connecting pipe 120 can be disassembled, and then the blocking cover 830 can be loosened and removed. Then, the mesh bags 820 containing molecular sieves at different positions can be replaced and used, so that the unsaturated molecular sieve mesh bag 820 replaces the saturated molecular sieve mesh bag 820. You can also replace the new mesh bag 820 containing molecular sieves, and then rotate the blocking cover 830 to install multiple mesh bags 820 containing molecular sieves between the blocking cover 830 and the mesh plate 810 for standby use.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A filter drier for a refrigerator refrigeration cycle system, characterized in that: include: Copper tube shell (100); A filter cover (200) is fixed at one end inside the copper tube shell (100) and is used to filter impurities in the refrigerant. The filter cover (200) has a truncated cone shape, and one end of the filter cover (200) is connected and fixed with a three-way pipe (210); Elbow pipes 1 (300), two in number, are respectively connected and fixed to both ends of the tee pipe (210); There are two connecting pipes (400), one end of which is detachably connected and fixed to the corresponding bent pipe 1 (300), and a dirt blockage prompt mechanism (500) is arranged inside the connecting pipe (400); The dirty blockage prompt mechanism (500) comprises a connecting shaft (510) and a rack (530); a filter screen cartridge (520) is sleeved and fixed on the outer side of the connecting shaft (510); the top end of the connecting shaft (510) is meshed and driven with the rack (530); and a detection box (540) is fixed on the bottom end of the connecting shaft (510); The number of bent pipes 2 (600) is two, one end of which is detachably connected and fixed to the connecting pipe (400) at the corresponding position, and a filter screen cylinder 2 (610) is disposed inside the other end of the bent pipe 2 (600); There are two return pipes (700), the top of which is connected and fixed to the bottom of the corresponding bent pipe 2 (600); The drying mechanism (800) is arranged inside one end of the copper tube shell (100) and is used to remove water vapor, absorb odor, and protect the refrigeration system.

2. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: The two ends of the copper tube shell (100) are respectively connected and fixed with a joint tube 1 (110) and a joint tube 2 (120), and the interior of the copper tube shell (100) is filled with activated carbon (130).

3. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: A fixing flange (310) which is detachably fixed to the connecting pipe (400) is fixed to the top of the curved pipe (300), and a solenoid valve (320) is installed in series at the bottom end of the curved pipe (300).

4. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: The outer side of the connecting pipe (400) is connected and fixed with a filling pipe (410), and a valve (410) is installed inside the filling pipe.

5. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: Activated carbon particles are placed inside the filter cartridge 1 (520), and a plurality of notches (521) are provided at equal angles in a circular shape on the outside of the filter cartridge 1 (520). A gear (511) meshing with the rack (530) is fixed at the top of the connecting shaft (510).

6. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: The bottom end of the connecting shaft (510) is rotatably provided with a detection box (540) which is slidably connected to the inside of the connecting tube (400), and a displacement sensor is fixedly installed inside the detection box (540).

7. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: The interior of the second curved pipe (600) is provided with an internal thread that is screwed together with the second filter cylinder (610). The second filter cylinder (610) extends into the interior of the return pipe (700) at a corresponding position, and a gap is reserved between the outside of the second filter cylinder (610) and the interior of the return pipe (700).

8. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: A connecting flange 1 (620) is fixed to the outer side of the bottom of the second curved pipe (600), and a connecting flange 2 (710) is fixedly connected to the top of the return pipe (700). The connecting flange 1 (620) and the connecting flange 2 (710) are detachably fixedly connected by bolts.

9. The filter drier of the refrigerator refrigeration cycle system according to claim 1, characterized in that: The drying mechanism (800) comprises: A mesh plate (810) is fixedly connected to the inner side of the copper tube shell (100); A plurality of mesh bags (820), wherein the mesh bags (820) contain molecular sieves; The blocking cover (830) is screwed and connected to the copper tube shell (100).

10. The filter drier of the refrigerator refrigeration cycle system according to claim 9, characterized in that: A plurality of mesh bags (820) are arranged between the mesh plate (810) and the blocking cover (830); a mesh hole is provided in the middle of the blocking cover (830); and a toggle rod is fixed in the middle of the blocking cover (830).

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