Liquid accumulator for refrigeration equipment

Abstract

The liquid storage device for the refrigeration equipment comprises a lower tank body and an upper tank body, the lower tank body is fixedly connected with the upper tank body, and the lower tank body comprises a first drying and filtering assembly, a second drying and filtering assembly, a third drying and filtering assembly and a fourth drying and filtering assembly; each of the first drying and filtering assembly, the second drying and filtering assembly, the third drying and filtering assembly and the fourth drying and filtering assembly comprises a fixed cylinder and a liquid inlet end, and a drying and filtering core is arranged in the fixed cylinder. According to the technical key points, the whole drying and filtering assembly is divided into four groups, a sealing cover plate is additionally arranged on a fixing cylinder of the drying and filtering assembly to form an assembling and disassembling position, when the sealing cover plate is opened, a drying and filtering element is exposed outside, at the moment, the drying and filtering element can be disassembled, and a connected pipeline does not need to be disassembled; the dry filter element is convenient to replace, clean and maintain; and the drying core is properly heated through the electric heating ring, so that the water absorption of the drying and filtering assembly is recovered.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid storage devices, and in particular to a liquid storage device for refrigeration equipment. Background Art

[0002] The accumulator is specially used to store refrigerant liquid, provide the liquid supply required for the circulation of the refrigeration system, and ensure the stable operation of the refrigeration system. The main function of the accumulator in the refrigeration system is to store refrigerant. Generally speaking, the accumulator can be divided into a high-pressure circulation accumulator and a low-pressure circulation accumulator. In the refrigeration principle, the refrigerant (refrigerant) achieves the effect of heat absorption and heat release through the transformation of physical form. When the refrigerant is added to the air-conditioning sealed system, it will inevitably be mixed with moisture in the air and impurities in the pipeline. During the physical transformation process, moisture will freeze into solid ice, blocking the closed pipeline of the air-conditioning system, thereby affecting the flow of refrigerant, and eventually leading to refrigeration failure, and in severe cases, explosion.

[0003] In order to filter out impurities to avoid system blockage and absorb moisture to avoid corrosion and ice blockage, a dry filter assembly is often provided inside the liquid reservoir. The dry filter assembly is usually sealed and welded inside the liquid reservoir and cannot be disassembled. Even if it can be disassembled, it is necessary to disconnect the pipeline passage and disassemble and clean the liquid reservoir, which makes it inconvenient to assemble, disassemble and maintain the liquid reservoir. Summary of the invention

[0004] Technical issues solved: In view of the deficiencies in the prior art, the present invention provides a liquid storage device for refrigeration equipment, which divides the overall dry filter assembly into four groups, and adds a sealing cover plate on the fixed cylinder of the dry filter assembly to form an installation and disassembly position. When the sealing cover plate is opened, the dry filter core is exposed to the outside, and the dry filter core can be disassembled at this time without disassembling the connected pipelines, thereby facilitating the replacement, cleaning and maintenance of the dry filter core. The dry core is properly heated by an electric heating ring to restore the water absorption of the dry filter assembly, thereby solving the technical problems mentioned in the background technology.

[0005] Technical solution: To achieve the above object, the present invention is implemented through the following technical solutions: A liquid storage device for refrigeration equipment comprises a lower tank body and an upper tank body, wherein the lower tank body is fixedly connected to the upper tank body, the lower tank body comprises a first dry filter assembly, a second dry filter assembly, a third dry filter assembly and a fourth dry filter assembly, and the overall dry filter assembly is divided into four groups, wherein the first dry filter assembly, the second dry filter assembly, the third dry filter assembly and the fourth dry filter assembly each comprise a fixed cylinder and a liquid inlet end, a dry filter core is built in the fixed cylinder, a drainage groove is provided on the side wall of the fixed cylinder, a sealing cover is provided at one end of the fixed cylinder, the sealing cover can be opened and closed manually to form an assembly and disassembly position, one end of the sealing cover is hinged to the fixed cylinder, and the other end of the sealing cover is fixedly connected to the fixed cylinder by a locking bolt, and when the sealing cover is opened, the dry filter core is exposed to the outside, and the dry filter core can be emptied at this time. The dry filter element is disassembled, cleaned or replaced after disassembly, and finally the dry filter element is reinstalled in place and the sealing cover is closed. An electric heating coil is arranged on the inner wall of the fixed cylinder, and the electric heating coil is located at the periphery of the dry filter element. A partition is arranged inside the lower tank body, and a through hole is opened on the partition. A liquid inlet pipe and a liquid discharge pipe are arranged on the upper end of the upper tank body, and one end of the liquid discharge pipe is connected to the central pipe, and the central pipe passes through the through hole of the partition and is sealed with the partition. A pressure gauge is arranged on the liquid discharge pipe, and the pressure gauge can monitor the pipeline pressure in real time to judge the operating status of the liquid reservoir. An electric socket is arranged on the outer wall of the fixed cylinder, and the electric socket is electrically connected to the electric heating coil. The electric socket is connected to the external power supply circuit to supply power to the electric heating coil. When the electric heating coil is energized, it heats up to heat the dry filter assembly.

[0006] In a possible implementation, the first dry filter assembly, the second dry filter assembly, the third dry filter assembly and the fourth dry filter assembly are evenly spaced along the circumferential direction of the lower tank body, the four groups of dry filter assemblies perform dry filtering operations together, and each group of dry filter assemblies can be assembled and disassembled separately.

[0007] In one possible implementation, the drying filter core includes a first filter screen, a drying core and a second filter screen, the drying core is located between the first filter screen and the second filter screen, the first filter screen and the second filter screen form a filtering part, and the drying core forms a drying part. The filtering part can filter out impurities in the pipeline, and the drying part can absorb moisture in the pipeline, filter impurities to avoid system blockage, and absorb moisture to avoid corrosion and ice blockage.

[0008] In a possible implementation, a second lug is provided at one end of the sealing cover plate, and a first lug is provided at one end of the fixing tube close to the sealing cover plate. The first lug and the second lug are fixedly connected by a locking bolt. The locking bolt is removed to release the lock between the sealing cover plate and the fixing tube. At this time, the sealing cover plate can be rotated and opened relative to the fixing tube. When the sealing cover plate is in the open state, the dry filter element can be disassembled and assembled. After the dry filter element is reinstalled in place, the sealing cover plate is closed, and the locking bolt is used again to fix the sealing cover plate and the fixing tube.

[0009] In a possible implementation, a sight glass is provided on the sealing cover plate, and the flow state of the refrigerant is observed through the sight glass to determine the working state of the liquid storage device.

[0010] In a possible implementation, the liquid inlet end is located at one end of the fixed cylinder, the sealing cover plate is located at the other end of the fixed cylinder, and the refrigerant enters the fixed cylinder of the dry filter assembly through the liquid inlet end of the dry filter assembly.

[0011] In a possible implementation, the drying core includes two layers of carrier nets, and dry particles are filled between the two layers of carrier nets. The two layers of carrier nets are used to cover the dry particles to prevent the dry particles from falling. The dry particles and the double-layer carrier nets form an integral drying structure, which can be replaced as a whole.

[0012] In a possible implementation, a safety fuse is provided on the side wall of the upper tank body. When the temperature and pressure of the refrigerant rise abnormally, the safety fuse melts and opens to prevent the system pressure from being too high, thereby playing a role of safety protection.

[0013] In a possible implementation, the first filter screen, the drying core and the second filter screen are all fixedly arranged on the annular outer frame, the first filter screen and the annular outer frame of its outer ring form an integral filtering structure, the second filter screen and the annular outer frame of its outer ring form an integral filtering structure, and the drying core and the annular outer frame of its outer ring form an integral drying structure.

[0014] In one possible implementation, a non-slip rubber layer is provided on the outer surface of the annular outer frame, and the non-slip rubber layer is in close contact with the inner wall of the fixed cylinder. The installation and fixation of the dry filter element are achieved by relying on the contact friction between the non-slip rubber layer and the inner wall of the fixed cylinder. During the installation process, no fasteners are required. When disassembling the dry filter element, it is only necessary to apply sufficient external force to overcome the contact friction between the non-slip rubber layer and the inner wall of the fixed cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention divides the overall dry filter assembly into four groups, and adds a sealing cover plate on the fixed cylinder of the dry filter assembly. The sealing cover plate can be opened and closed manually to form an installation and disassembly position. When the sealing cover plate is opened, the dry filter core is exposed to the outside. At this time, the dry filter core can be disassembled without disassembling the connected pipelines, which is convenient for replacing, cleaning and maintaining the dry filter core.

[0016] 2. The present invention adds an electric heating coil inside the fixed cylinder, and connects the electric socket to an external power supply circuit to supply power to the electric heating coil. When the electric heating coil is powered on, the temperature rises to heat the drying filter assembly. The drying core is properly heated by the electric heating coil to restore the water absorption of the drying filter assembly, thereby improving the continuous drying ability of the drying filter assembly and improving the use effect of the liquid storage device.

[0017] 3. The present invention relies on the contact friction between the anti-slip rubber layer and the inner wall of the fixed cylinder to achieve the installation and fixation of the dry filter element. No fasteners are needed during the installation process, and the dry filter element is easy to assemble and disassemble, which is conducive to maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0019] 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 present invention; Figure 3 It is a schematic diagram of the top view structure of the lower tank body of the present invention; Figure 4 It is a schematic diagram of the structure of the bottom tank body of the present invention when viewed from above; Figure 5 It is a schematic diagram of the top view of the upper tank body of the present invention; Figure 6 It is a structural schematic diagram of the fixing tube of the present invention; Figure 7 It is a structural schematic diagram of the drying filter element of the present invention; Figure 8 It is a structural schematic diagram of the drying core of the present invention; Fig. 9 for Figure 1 A partial enlarged view of area A in the middle; Fig.10 for Figure 6 A partial enlarged view of area B in the middle; Fig.11 It is a structural schematic diagram of the electric heating coil of the present invention; Fig.12This is a refrigerant flow diagram of the present invention.

[0020] In the figure: 1, lower tank body; 2, upper tank body; 11, first dry filter assembly; 12, second dry filter assembly; 13, third dry filter assembly; 14, fourth dry filter assembly; 15, partition; 141, fixed cylinder; 142, liquid inlet end; 143, dry filter core; 144, drain groove; 145, sealing cover plate; 146, electric socket; 147, first lug; 148, electric heating ring; 151, through hole; 1431, first filter screen; 1432, dry core; 1433, second filter screen; 1434, annular outer frame; 1435, non-slip rubber layer; 1436, bearing net; 1437, dry particles; 1451, sight glass; 1452, second lug; 1453, locking bolt; 21, liquid inlet pipe; 22, drain pipe; 23, center pipe; 24, pressure gauge; 25, safety fuse. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a liquid storage device for refrigeration equipment, divides the overall dry filter assembly into four groups, and adds a sealing cover plate on the fixed cylinder of the dry filter assembly to form an installation and disassembly position. When the sealing cover plate is opened, the dry filter core is exposed to the outside, and the dry filter core can be disassembled at this time without disassembling the connected pipelines, so that the replacement, cleaning and maintenance of the dry filter core are convenient. The dry core is properly heated by the electric heating ring to restore the water absorption of the dry filter assembly, thereby solving the technical problems mentioned in the background technology.

[0022] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows: Embodiment 1: See also Figure 1-12The present invention provides a technical solution: a liquid storage device for refrigeration equipment, comprising a lower tank body 1 and an upper tank body 2, the lower tank body 1 is fixedly connected to the upper tank body 2, the lower tank body 1 comprises a first dry filter assembly 11, a second dry filter assembly 12, a third dry filter assembly 13 and a fourth dry filter assembly 14, the first dry filter assembly 11, the second dry filter assembly 12, the third dry filter assembly 13 and the fourth dry filter assembly 14 all comprise a fixed cylinder 141 and a liquid inlet end 142, the fixed cylinder 141 is fixedly arranged on the thin-walled structure of the lower tank body 1, the fixed cylinder 141 is equipped with a dry filter core 143, the dry filter core 143 is a detachable structure, a drainage groove 144 is provided on the side wall of the fixed cylinder 141 for draining liquid after dry filtration, a sealing cover plate 145 is provided at one end of the fixed cylinder 141, one end of the sealing cover plate 145 is hinged to the fixed cylinder 141, and the other end of the sealing cover plate 145 is fixed to the fixed cylinder 141 by a locking bolt 1453 The inner wall of the fixed cylinder 141 is provided with an electric heating coil 148, and the electric heating coil 148 is located on the periphery of the drying filter element 143. The interior of the lower tank body 1 is provided with a partition 15, and the partition 15 divides the lower tank body 1 into an upper layer and a lower layer. The partition 15 is provided with a through hole 151. The upper end of the upper tank body 2 is provided with a liquid inlet pipe 21 and a liquid discharge pipe 22. One end of the liquid discharge pipe 22 is connected to the central pipe 23, and the central pipe 23 passes through the through hole 151 of the partition 15 and is sealed and connected with the partition 15. In order to prevent the refrigerant that has not been filtered and dried from entering the bottom of the lower tank body 1, a pressure gauge 24 is arranged on the discharge pipe 22, and the pressure gauge 24 can monitor the pipeline pressure in real time to determine the operating status of the liquid storage device. An electric socket 146 is arranged on the outer wall of the fixed cylinder 141, and the electric socket 146 is electrically connected to the electric heating coil 148. The electric socket 146 is connected to an external power supply circuit to supply power to the electric heating coil 148. When the electric heating coil 148 is energized, it heats up to appropriately heat the drying and filtering components.

[0023] The liquid inlet pipe 21 is connected to the condenser, and the liquid discharge pipe 22 is connected to the expansion valve. The refrigerant enters the lower tank body 1 through the liquid inlet pipe 21, and is then diverted to the first drying and filtering assembly 11, the second drying and filtering assembly 12, the third drying and filtering assembly 13 and the fourth drying and filtering assembly 14. After the refrigerant is dried and filtered by the first drying and filtering assembly 11, the second drying and filtering assembly 12, the third drying and filtering assembly 13 and the fourth drying and filtering assembly 14, it is discharged through the drain groove 144. The liquid part is concentrated at the bottom of the lower tank body 1 and enters the central pipe 23, enters the liquid discharge pipe 22 through the central pipe 23, and goes to the expansion valve through the liquid discharge pipe 22.

[0024] In some examples, the first dry filter assembly 11, the second dry filter assembly 12, the third dry filter assembly 13 and the fourth dry filter assembly 14 are evenly spaced along the circumferential direction of the lower tank body 1, and the first dry filter assembly 11, the second dry filter assembly 12, the third dry filter assembly 13 and the fourth dry filter assembly 14 are the same size.

[0025] The overall dry filter assembly is divided into a first dry filter assembly 11, a second dry filter assembly 12, a third dry filter assembly 13 and a fourth dry filter assembly 14. The four groups of dry filter assemblies perform dry filtering operations together, and each group of dry filter assemblies can be assembled and disassembled separately.

[0026] The sealing cover 145 at one end of the first dry filter component 11 is the installation and disassembly position of the first dry filter component 11, the sealing cover 145 at one end of the second dry filter component 12 is the installation and disassembly position of the second dry filter component 12, the sealing cover 145 at one end of the third dry filter component 13 is the installation and disassembly position of the third dry filter component 13, and the sealing cover 145 at one end of the fourth dry filter component 14 is the installation and disassembly position of the fourth dry filter component 14. The sealing cover 145 can be opened and closed manually. When the sealing cover 145 is opened, the dry filter element 143 is exposed to the outside. At this time, the dry filter element 143 can be disassembled, cleaned or replaced after disassembly, and finally the dry filter element 143 can be reinstalled in place and the sealing cover 145 can be closed. During the entire disassembly and assembly process, there is no need to disassemble the connected pipelines, and the assembly and disassembly is convenient.

[0027] In some examples, the drying filter element 143 includes a first filter screen 1431 , a drying core 1432 , and a second filter screen 1433 , and the drying core 1432 is located between the first filter screen 1431 and the second filter screen 1433 .

[0028] The first filter 1431 and the second filter 1433 form a filtering part, and the drying core 1432 forms a drying part. The filtering part can filter out impurities in the pipeline, and the drying part can absorb moisture in the pipeline. The liquid storage device with a drying and filtering function is used to separate gas and liquid and store part of the liquid, filter impurities to avoid system blockage, and absorb moisture to avoid corrosion and ice blockage.

[0029] The dry filter element 143 is fixed in the slot inside the fixed cylinder 141 and is tightly attached to the inner wall of the fixed cylinder 141 to maintain stability. The dry core 1432 of the dry filter element 143 is tightly attached to the electric heating coil 148. Fig.10As shown, the electric heating coil 148 is located at the periphery of the drying core 1432. The electric heating coil 148 can heat the drying core 1432 by being energized and heated. The drying core 1432 selects a reusable desiccant type. When the water absorption of the drying particles 1437 inside the drying core 1432 is reduced, the drying core 1432 is properly heated by the electric heating coil 148 to restore its water absorption, thereby improving the continuous drying capacity of the first drying filter component 11, the second drying filter component 12, the third drying filter component 13 and the fourth drying filter component 14, and improving the use effect.

[0030] In some examples, a second lug 1452 is provided at one end of the sealing cover plate 145, and the sealing cover plate 145 and the second lug 1452 are welded and fixed. A first lug 147 is provided at one end of the fixing tube 141 close to the sealing cover plate 145, and the first lug 147 and the fixing tube 141 are welded and fixed. A slot structure is provided on the first lug 147, and a hole body is provided on the second lug 1452. When the sealing cover plate 145 is closed, the hole body corresponds to the slot, and the locking bolt 1453 can pass through it smoothly. The first lug 147 and the second lug 1452 are fixedly connected by the locking bolt 1453, that is, the sealing cover plate 145 and the fixing tube 141 are fixedly connected by the locking bolt 1453.

[0031] like Fig. 9 As shown, the locking bolts 1453 are removed to release the lock between the sealing cover 145 and the fixed cylinder 141. At this time, the sealing cover 145 can be rotated and opened relative to the fixed cylinder 141. When the sealing cover 145 is in the open state, the dry filter element 143 can be disassembled and assembled. After the dry filter element 143 is reinstalled in place, the sealing cover 145 is closed, and the locking bolts 1453 are used again to fix the sealing cover 145 and the fixed cylinder 141. A sealing ring structure is provided between the sealing cover 145 and the fixed cylinder 141 to improve the sealing performance of the connection between the sealing cover 145 and the fixed cylinder 141 to prevent leakage.

[0032] In some examples, a sight glass 1451 is provided on the sealing cover plate 145 , and the flow state of the refrigerant is observed through the sight glass 1451 to determine the working state of the liquid storage device.

[0033] In some examples, the liquid inlet end 142 is located at one end of the fixed cylinder 141, and the sealing cover plate 145 is located at the other end of the fixed cylinder 141. The refrigerant enters the lower tank body 1 through the liquid inlet pipe 21, enters the fixed cylinder 141 of the first dry filter component 11 through the liquid inlet end 142 of the first dry filter component 11, enters the fixed cylinder 141 of the second dry filter component 12 through the liquid inlet end 142 of the second dry filter component 12, enters the fixed cylinder 141 of the third dry filter component 13 through the liquid inlet end 142 of the third dry filter component 13, and enters the fixed cylinder 141 of the fourth dry filter component 14 through the liquid inlet end 142 of the fourth dry filter component 14, thereby realizing diversion.

[0034] In some examples, the dry core 1432 includes two layers of carrier webs 1436 , and dry particles 1437 are filled between the two layers of carrier webs 1436 .

[0035] The two-layer carrier net 1436 is used to cover the dry particles 1437 to prevent the dry particles 1437 from falling. The dry particles 1437 and the double-layer carrier net 1436 form an integral dry structure, which can be replaced as a whole.

[0036] In some examples, a safety fuse 25 is provided on the side wall of the upper tank body 2 .

[0037] When the refrigerant temperature and pressure rise abnormally, the safety fuse 25 melts and opens to prevent the system pressure from being too high, thus playing a role of safety protection.

[0038] By adopting the above technical solution: The whole dry filter assembly is divided into four groups, and a sealing cover plate 145 is added to the fixed cylinder 141 of the dry filter assembly. The sealing cover plate 145 can be opened and closed manually to form an installation and removal position. When the sealing cover plate 145 is opened, the dry filter element 143 is exposed to the outside. At this time, the dry filter element 143 can be disassembled without disassembling the connected pipeline, which is convenient for replacing, cleaning and maintaining the dry filter element 143. An electric heating coil 148 is additionally provided inside the fixed cylinder 141, and the electric socket 146 is connected to an external power supply circuit to supply power to the electric heating coil 148. When the electric heating coil 148 is powered on, the temperature rises to heat the drying filter assembly. The drying core 1432 is appropriately heated by the electric heating coil 148 to restore the water absorption of the drying filter assembly, thereby improving the continuous drying ability of the drying filter assembly and improving the use effect of the liquid storage device.

[0039] Embodiment 2: Based on Example 1, this example introduces a specific structure of a dry filter core 143 in a liquid storage container for refrigeration equipment. The first filter screen 1431 , the dry core 1432 and the second filter screen 1433 are all fixedly arranged on the annular outer frame 1434 .

[0040] The first filter 1431 and its outer annular frame 1434 form an integral filtering structure, the second filter 1433 and its outer annular frame 1434 form an integral filtering structure, and the drying core 1432 and its outer annular frame 1434 form an integral drying structure. When it is necessary to clean the accumulated impurities or replace the drying filter core 143, the entirety can be disassembled, and after the maintenance is completed, the entirety can be installed, which is convenient for maintenance.

[0041] In some examples, an anti-skid rubber layer 1435 is disposed on the outer surface of the annular outer frame 1434 , and the anti-skid rubber layer 1435 is in close contact with the inner wall of the fixing tube 141 .

[0042] The anti-slip rubber layer 1435 has a certain elastic deformation ability. When installing the filtering structure, the anti-slip rubber layer 1435 of the outer circle of the first filter screen 1431 is in close contact with the inner wall of the fixed cylinder 141, the anti-slip rubber layer 1435 of the outer circle of the second filter screen 1433 is in close contact with the inner wall of the fixed cylinder 141, and the anti-slip rubber layer 1435 of the outer circle of the drying core 1432 is in close contact with the inner wall of the fixed cylinder 141. The installation and fixation of the drying filter element 143 is achieved by relying on the contact friction between the anti-slip rubber layer 1435 and the inner wall of the fixed cylinder 141, and no fasteners are needed during the installation process.

[0043] When installing the dry filter element 143, it is only necessary to apply sufficient external force and fix the filtering structure and the drying structure in sequence inside the fixed cylinder 141. Similarly, when removing the dry filter element 143, it is only necessary to apply sufficient external force to overcome the contact friction between the anti-slip rubber layer 1435 and the inner wall of the fixed cylinder 141, and remove the filtering structure and the drying structure from the inside of the fixed cylinder 141. This makes it easy to install and disassemble the dry filter element 143 and facilitates maintenance.

[0044] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A liquid storage device for refrigeration equipment, comprising a lower tank body (1) and an upper tank body (2), characterized in that: The lower tank body (1) is fixedly connected to the upper tank body (2); the lower tank body (1) comprises a first dry filter assembly (11), a second dry filter assembly (12), a third dry filter assembly (13) and a fourth dry filter assembly (14); the first dry filter assembly (11), the second dry filter assembly (12), the third dry filter assembly (13) and the fourth dry filter assembly (14) each comprise a fixed cylinder (141) and a liquid inlet end (142); a dry filter core (143) is built into the fixed cylinder (141); a liquid drain groove (144) is provided on a side wall of the fixed cylinder (141); a sealing cover plate (145) is provided at one end of the fixed cylinder (141); one end of the sealing cover plate (145) is hinged to the fixed cylinder (141); the other end of the sealing cover plate (145) is hinged to the fixed cylinder (141); ) are fixedly connected by locking bolts (1453); an electric heating coil (148) is arranged on the inner wall of the fixed cylinder (141); the electric heating coil (148) is located on the periphery of the drying filter element (143); a partition (15) is arranged inside the lower tank body (1); a through hole (151) is opened on the partition (15); a liquid inlet pipe (21) and a liquid discharge pipe (22) are arranged at the upper end of the upper tank body (2); one end of the liquid discharge pipe (22) is connected to the central pipe (23); the central pipe (23) passes through the through hole (151) of the partition (15) and is sealed to the partition (15); a pressure gauge (24) is arranged on the liquid discharge pipe (22); an electric socket (146) is arranged on the outer wall of the fixed cylinder (141); the electric socket (146) and the electric heating coil (148) are electrically connected.

2. A liquid storage device for refrigeration equipment according to claim 1, characterized in that: The first drying and filtering assembly (11), the second drying and filtering assembly (12), the third drying and filtering assembly (13) and the fourth drying and filtering assembly (14) are evenly spaced and distributed along the circumferential direction of the lower tank body (1).

3. The liquid storage device for refrigeration equipment according to claim 1, characterized in that: The drying filter core (143) comprises a first filter screen (1431), a drying core (1432) and a second filter screen (1433); the drying core (1432) is located between the first filter screen (1431) and the second filter screen (1433).

4. The liquid storage device for refrigeration equipment according to claim 1, characterized in that: A second lug (1452) is provided at one end of the sealing cover plate (145), and a first lug (147) is provided at one end of the fixing tube (141) close to the sealing cover plate (145), wherein the first lug (147) and the second lug (1452) are fixedly connected via a locking bolt (1453).

5. The liquid storage device for refrigeration equipment according to claim 1, characterized in that: The sealing cover plate (145) is provided with a liquid sight glass (1451).

6. The liquid storage device for refrigeration equipment according to claim 1, characterized in that: The liquid inlet end (142) is located at one end of the fixed cylinder (141), and the sealing cover plate (145) is located at the other end of the fixed cylinder (141).

7. The liquid storage device for refrigeration equipment according to claim 3, characterized in that: The drying core (1432) comprises two layers of carrier nets (1436), and drying particles (1437) are filled between the two layers of carrier nets (1436).

8. The liquid storage device for refrigeration equipment according to claim 1, characterized in that: A safety fuse (25) is provided on the side wall of the upper tank body (2).

9. The liquid storage device for refrigeration equipment according to claim 3, characterized in that: The first filter screen (1431), the drying core (1432) and the second filter screen (1433) are all fixedly arranged on the annular outer frame (1434).

10. The liquid storage device for refrigeration equipment according to claim 9, characterized in that: An anti-slip rubber layer (1435) is provided on the outer surface of the annular outer frame (1434), and the anti-slip rubber layer (1435) is in close contact with the inner wall of the fixing cylinder (141).

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