A compressor for cold storage refrigeration

Abstract

The present invention relates to the technical field of compressors, and discloses a compressor for cold storage refrigeration, including a base, and a refrigeration compression box is fixed on the top of the base, and a steam pre-storage box and a motor are respectively arranged on both sides of the top of the refrigeration compression box, and a connecting channel is fixed on the bottom of the steam pre-storage box. The present invention sets the required temperature and critical temperature through a control panel, and detects it through a temperature sensor, and transmits the temperature in the cold storage to a single-chip microcomputer for processing in real time. When the temperature in the cold storage is higher than the highest value of the critical temperature, the single-chip microcomputer analyzes and controls the electric push rod to open, and through a connecting mechanism, two groups of piston assemblies are synchronously reciprocated, so as to improve the suction force of the reciprocating movement of the piston assembly when the motor speed is inconvenient, and simultaneously increase the flow rate of low-temperature and low-pressure refrigerant vapor entering the high-pressure refrigerant vapor and discharging the internal per unit time, so as to enhance the overall refrigeration effect of the refrigeration compression box.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor for cold storage refrigeration. Background Art

[0002] The refrigeration compressor is the core and heart of the refrigeration system. The capacity and characteristics of the compressor determine the capacity and characteristics of the refrigeration system. The working chamber of the compressor is the cylinder, and the piston moves in the cylinder to compress the air.

[0003] Chinese patent authorization announcement No. CN111102162B discloses a refrigeration compressor, including a compression box and a compression cylinder connected to each other, an oil storage bin is provided inside the piston, lubrication chambers are provided on both sides of the piston, the oil storage bin is connected to the lubrication chamber, the upper part of the oil storage bin is connected to the oil inlet on the driven shaft through an oil circuit, a slide groove is provided on the bottom surface of the piston, a slider is slidably connected in the slide groove, the slider is connected to a block located in the oil storage bin, and the block can block the oil circuit upward and block the slide groove downward. The piston rod and the piston are located in the compression cylinder, and there is a partition under the piston in the compression cylinder. A refrigerant inlet and a refrigerant outlet are provided at the bottom of the piston cylinder, an air inlet hole and an air outlet are provided on the partition, and a movable plate is provided on the air inlet hole, one end of the movable plate is fixed on the partition, and the other end is movably connected to a fixed block fixed on the partition through a spring; the above-mentioned prior art scheme has the following shortcomings: in the device, the low-temperature and low-pressure refrigerant vapor is converted into high-pressure refrigerant vapor to achieve a refrigeration effect through the reciprocating motion of the piston. When the refrigeration compressor is used in a cold storage, the compressor is continuously in a working state. Since the cold storage generally sets a lower temperature for storing objects, in order to achieve this effect, the refrigeration compressor needs to increase the speed of the compressor. The higher the speed, the greater the cooling capacity, which not only consumes more electricity, but also reduces the life of components such as the piston, and brings greater noise and vibration. Therefore, there is room for improvement. Summary of the invention

[0004] The object of the present invention is to provide a compressor for cold storage refrigeration to solve the problem proposed in the above background technology that the rotation speed of the compressor is increased. The higher the rotation speed, the greater the refrigeration capacity, which not only consumes more electricity but also damages the life of components such as the piston.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compressor for refrigeration in a cold storage, comprising a base, and a refrigeration compression box is fixed to the top of the base, a steam pre-storage box and a motor are respectively arranged on both sides of the top of the refrigeration compression box, a connecting channel is fixed to the bottom end of the steam pre-storage box, and connecting pipes are respectively arranged at both ends of one side of the connecting channel, a piston assembly is slidably connected to the inside of the connecting pipe, a crankshaft B is fixed to the bottom end of the output shaft of the motor, a crankshaft A is rotatably connected to one side of the bottom end of the steam pre-storage box, a through hole is arranged on one side of the inside of the piston assembly, and the crankshaft A and the crankshaft B are both penetrated Inside the through hole, a connecting mechanism is provided at the top of the crankshaft A, a temperature sensor is provided on one side of the refrigeration compression box, a control panel is provided at one end of the refrigeration compression box, and a single-chip computer is provided on one side of the inner wall of the steam pre-storage box; the connecting mechanism includes a mounting sleeve fixed to the top of the crankshaft A, a mounting groove is provided inside the mounting sleeve, and an electric push rod is fixed to the bottom end of the mounting groove, a moving plate is fixed to the top of the electric push rod, and a spring A is fixed to the top of the moving plate, a threaded sleeve is fixed to the top of the spring A, a threaded rod is fixed to the bottom end of the crankshaft B, and the threaded rod is threadedly connected to the threaded sleeve.

[0006] Preferably, the movable plate and the threaded sleeve are both slidably connected to the mounting groove in a vertical direction, and the cross-sections of the threaded sleeve, the movable plate and the mounting groove are all arranged to be rectangular.

[0007] Preferably, a limiting sleeve is fixed to the bottom end of the crankshaft B, and the inner wall of the limiting sleeve fits with the outer wall of the threaded sleeve.

[0008] Preferably, an air inlet groove is provided inside the refrigeration compression box, and the air inlet groove is communicated with the interior of the steam pre-storage box, a filter is provided inside the air inlet groove, and the top of the filter is flush with the top of the refrigeration compression box, a partition is fixed inside the steam pre-storage box, and a release mechanism is provided inside the partition, a cleaning mechanism is provided at the top of the refrigeration compression box, and an air inlet and an exhaust port are opened inside the partition.

[0009] Preferably, the release mechanism includes a receiving groove arranged inside the partition, the interior of the receiving groove is slidably connected with a T-shaped rod, the outer side of the T-shaped rod is sleeved with a spring B, the T-shaped rod extends out of the interior of the partition, and a baffle is fixed to the end of the T-shaped rod away from the partition, and the baffle is provided in two groups, one group of baffles is located at the bottom of the air inlet, and the other group of baffles is located at the top of the exhaust port, a trapezoidal cover is fixed to the bottom end of the baffle at the bottom of the air inlet, and an arc-shaped protrusion is fixed to the bottom end of the baffle at the top of the exhaust port.

[0010] Preferably, the cleaning mechanism includes a moving frame slidably connected to the top of the refrigeration compression box, a C-shaped mounting frame is fixed to the side of the cleaning mechanism close to the air inlet groove, and a scraper is fixed to the bottom end of the C-shaped mounting frame away from the moving frame, teeth are arranged on the inner wall of the moving frame, the steam pre-storage box is rotatably connected to a mounting rod, a shielding blade is fixed to the outer side of the mounting rod, the mounting rod extends to the outside of the refrigeration compression box, a bevel gear B is fixed to the outer side of the mounting rod, and the top of the bevel gear B is meshingly connected to the bevel gear A, a connecting shaft is fixed to the top of the bevel gear A, and an incomplete gear is fixed to the top of the connecting shaft, and the incomplete gear is meshingly connected to the teeth.

[0011] Preferably, the shielding blade is located above one side of the air inlet, and the teeth are provided in two groups, and the two groups of teeth are staggered.

[0012] Preferably, the side view cross-section of the scraper is triangular, and the bottom end of the scraper is in contact with the top end of the refrigeration compression box.

[0013] Preferably, the piston assembly consists of a piston head, a connecting rod A and a connecting rod B. The piston head fits tightly against the inner wall of the connecting tube. Connecting rod A is fixed on one side of the piston head close to crankshaft B and crankshaft A, and connecting rod B is hingedly connected to one side of connecting rod A. The internal through hole of the piston assembly is arranged on connecting rod B.

[0014] Preferably, a rotating block is fixed to the bottom end of the crankshaft A, a rotating groove is provided on the inner side of the bottom of the inner wall of the refrigeration compressor box, and the rotating groove is rotatably connected to the rotating block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The required temperature and critical temperature are set through the control panel, and the temperature sensor is used for detection. The temperature in the cold storage is transmitted to the single-chip microcomputer for processing in real time. When the temperature in the cold storage is higher than the maximum value of the critical temperature, the single-chip microcomputer analyzes and controls the electric push rod to open. Through the connecting mechanism, the two groups of piston assemblies are synchronized to reciprocate, so as to improve the suction force of the reciprocating movement of the piston assembly when the motor speed is inconvenient, and simultaneously increase the flow rate of low-temperature and low-pressure refrigerant steam entering the high-pressure and high-pressure refrigerant steam to discharge the internal per unit time, so as to enhance the overall refrigeration effect of the refrigeration compression box. It is not only more energy-saving, but also does not change the reciprocating frequency of the piston assembly, and protects the piston assembly as a whole. At the same time, it can effectively reduce noise. The refrigeration compression box itself is more self-regulating, and no real-time supervision by staff is required, which reduces labor costs and maintenance costs.

[0017] When air is inhaled through the reciprocating motion of the piston assembly, the low-temperature and low-pressure refrigerant vapor moves toward the inside of the connecting channel, and the steam drives the shielding blades to rotate. The cleaning mechanism causes the scraper to make horizontal reciprocating motion on the top of the filter. This not only prevents impurities in the low-temperature and low-pressure refrigerant vapor from entering the interior of the refrigeration compressor box and causing damage to the internal components of the refrigeration compressor box, but the indirect cleaning also prevents the filter from being blocked. The entire process is driven by wind power, which is more effective and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting mechanism of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the piston assembly distribution of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the release mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the steam pre-storage box of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Explanation of reference numerals in the figure: 1-refrigeration compression box; 2-motor; 3-filter; 4-cleaning mechanism; 401-C-shaped mounting frame; 402-moving frame; 403-teeth; 404-incomplete gear; 405-connecting shaft; 406-bevel gear A; 407-bevel gear B; 408-mounting rod; 409-shielding blade; 410-scraper; 5-intake groove; 6-steam pre-storage box; 7-partition; 8-temperature sensor; 9-connecting channel; 10-connecting Through pipe; 11-base; 12-piston assembly; 13-crankshaft A; 14-connecting mechanism; 1401-threaded rod; 1402-threaded sleeve; 1403-spring A; 1404-moving plate; 1405-electric push rod; 1406-installation sleeve; 1407-limit sleeve; 15-crankshaft B; 16-releasing mechanism; 1601-shielding plate; 1602-T-rod; 1603-spring B; 17-rotating block; 18-control panel; 19-single chip microcomputer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0028] Embodiment 1

[0029] In order to solve the problem in the prior art that the rotation speed of the compressor is increased, the higher the rotation speed, the greater the refrigeration capacity, which not only consumes more electricity but also damages the life of the piston and other components, the following solution is disclosed, specifically as follows Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown:

[0030] A compressor for cold storage refrigeration, comprising a base 11, and a refrigeration compression box 1 is fixed to the top of the base 11, a steam pre-storage box 6 and a motor 2 are respectively arranged on both sides of the top of the refrigeration compression box 1, a connecting channel 9 is fixed to the bottom of the steam pre-storage box 6, and two connecting pipes 10 are arranged on one side of the connecting channel 9, and the insides of the connecting pipes 10 are slidably connected with a piston assembly 12, a crankshaft B15 is fixed to the bottom end of the output shaft of the motor 2, a crankshaft A13 is rotatably connected to one side of the bottom of the steam pre-storage box 6, a through hole is arranged on one side of the inside of the piston assembly 12, the crankshaft A13 and the crankshaft B15 both pass through the inside of the through hole, a connecting mechanism 14 is arranged on the top of the crankshaft A13, and the refrigeration compressor A temperature sensor 8 is provided on one side of the compression box 1, a control panel 18 is provided on one end of the refrigeration compression box 1, and a single-chip computer 19 is provided on one side of the inner wall of the steam pre-storage box 6; the connecting mechanism 14 includes a mounting sleeve 1406 fixed to the top of the crankshaft A13, a mounting groove is provided inside the mounting sleeve 1406, and an electric push rod 1405 is fixed to the bottom end of the mounting groove, a moving plate 1404 is fixed to the top of the electric push rod 1405, and a spring A1403 is fixed to the top of the moving plate 1404, a threaded sleeve 1402 is fixed to the top of the spring A1403, a threaded rod 1401 is fixed to the bottom end of the crankshaft B15, and the threaded rod 1401 is threadedly connected to the threaded sleeve 1402.

[0031] The movable plate 1404 and the threaded sleeve 1402 are both slidably connected to the mounting groove in the vertical direction, and the cross-sections of the threaded sleeve 1402, the movable plate 1404 and the mounting groove are all arranged in a rectangular shape; a limiting sleeve 1407 is fixed to the bottom end of the crankshaft B15, and the inner wall of the limiting sleeve 1407 fits with the outer wall of the threaded sleeve 1402; the piston assembly 12 consists of a piston head, a connecting rod A and a connecting rod B, the piston head fits tightly with the inner wall of the connecting pipe 10, and a connecting rod A is fixed on one side of the piston head close to the crankshaft B15 and the crankshaft A13, and a connecting rod B is hingedly connected to one side of the connecting rod A, and the internal through hole of the piston assembly 12 is arranged on the connecting rod B; a rotating block 17 is fixed to the bottom end of the crankshaft A13, and a rotating groove is provided on the inner side of the bottom of the inner wall of the refrigeration compressor box 1, and the rotating groove is rotatably connected to the rotating block 17.

[0032] In this embodiment, when in use, when the refrigeration compression box 1 is used in a cold storage, the required temperature and the critical temperature are set through the control panel 18, and the temperature sensor 8 is used for detection, and the temperature in the cold storage is transmitted to the single-chip microcomputer 19 for processing in real time. When the temperature in the cold storage is higher than the highest value of the critical temperature, the single-chip microcomputer 19 analyzes and controls the electric push rod 1405 to open, and pushes the movable plate 1404 to the top. Due to the elastic effect of the spring A1403 and the rectangular cross-section of the threaded sleeve 1402, the threaded sleeve 1402 slowly rises and is threadedly connected to the threaded rod 1401. During the continuous rise of the threaded sleeve 1402, the spring A1403 is in a stretched state, and at the same time, the limit sleeve 1407 limits the outer side of the threaded sleeve 1402 and engages with the double engagement, so that the crankshaft B15 drives the crankshaft A13 to rotate synchronously, and the suction force of the reciprocating movement of the piston assembly 12 is increased when the speed of the motor 2 is inconvenient, and the low-temperature and low-pressure refrigerant vapor enters the high-pressure and high-pressure refrigeration at the same time. The flow rate of the agent steam discharged per unit time is used to enhance the overall refrigeration effect of the refrigeration compression box 1, which is not only more energy-saving, but also does not change the reciprocating frequency of the piston assembly 12, and protects the piston assembly 12 as a whole. At the same time, it can effectively reduce noise. When winter comes, the outside temperature will also affect the temperature of the cold storage. The unchanged speed will make the cold storage colder. When the temperature sensor 8 detects that the temperature in the cold storage is lower than the minimum value of the critical temperature, the speed of the motor 2 is reduced through the piston assembly 12, and the reverse mode is turned on. Under the pulling force of the spring A1403 and the limiting effect of the mounting sleeve 1406 on the threaded sleeve 1402, the electric push rod 1405 is cooperated to make the threaded sleeve 1402 completely separated from the threaded rod 1401, so that a piston assembly 12 performs refrigeration operation, and adjusts the motor 2 according to the actual temperature in the cold storage, so that the refrigeration compression box 1 itself is more self-regulating, and no real-time supervision by staff is required, which reduces the labor cost and maintenance cost, and improves the practicality of the refrigeration compression box 1.

[0033] Embodiment 2

[0034] This embodiment is different from the first embodiment. In order to achieve the pre-treatment of filtering the low-temperature and low-pressure refrigerant, the specific Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown:

[0035] The refrigeration compression box 1 is provided with an air inlet groove 5, and the air inlet groove 5 is connected with the interior of the steam pre-storage box 6. The air inlet groove 5 is provided with a filter 3, and the top of the filter 3 is flush with the top of the refrigeration compression box 1. The steam pre-storage box 6 is fixed with a partition 7, and the partition 7 is provided with a release mechanism 16. The top of the refrigeration compression box 1 is provided with a cleaning mechanism 4, and the partition 7 is provided with an air inlet and an exhaust port; the release mechanism 16 includes a receiving groove provided inside the partition 7, and the interior of the receiving groove is slidably connected to the receiving groove. There is a T-shaped rod 1602, the outer side of the T-shaped rod 1602 is sleeved with a spring B1603, the T-shaped rod 1602 extends out of the interior of the partition 7, and the end of the T-shaped rod 1602 away from the partition 7 is fixed with a shielding plate 1601, and the shielding plate 1601 is provided with two groups, one group of shielding plates 1601 is located at the bottom of the air inlet, and the other group of shielding plates 1601 is located at the top of the exhaust port. The bottom end of the shielding plate 1601 at the bottom of the air inlet is fixed with a trapezoidal cover, and the bottom end of the shielding plate 1601 at the top of the exhaust port is fixed with an arc-shaped protrusion; cleaning mechanism 4 The invention comprises a moving frame 402 which is slidably connected to the top of the refrigeration compression box 1, a C-shaped mounting frame 401 is fixed to the side of the cleaning mechanism 4 close to the air inlet groove 5, and a scraper 410 is fixed to the bottom of the C-shaped mounting frame 401 away from the moving frame 402, and teeth 403 are arranged on the inner wall of the moving frame 402, a mounting rod 408 is rotatably connected to the inside of the steam pre-storage box 6, and a shielding blade 409 is fixed to the outside of the mounting rod 408, and the mounting rod 408 extends to the outside of the refrigeration compression box 1, and a bevel tooth 403 is fixed to the outside of the mounting rod 408. Wheel B407, and the top of the bevel gear B407 is meshed with the bevel gear A406, the top of the bevel gear A406 is fixed with a connecting shaft 405, and the top of the connecting shaft 405 is fixed with an incomplete gear 404, and the incomplete gear 404 is meshed with the teeth 403; the shielding blade 409 is located above one side of the air inlet, and the teeth 403 are provided with two groups, and the two groups of teeth 403 are staggered; the side view section of the scraper 410 is set in a triangular shape, and the bottom end of the scraper 410 is in contact with the top of the refrigeration compressor box 1.

[0036] In this embodiment, during use, when air is inhaled through the reciprocating motion of the piston assembly 12, the low-temperature and low-pressure refrigerant vapor moves toward the interior of the connecting channel 9, and the vapor drives the shielding blade 409 to rotate. Under the meshing connection of the bevel gear B407 and the bevel gear A406, the connecting shaft 405 drives the incomplete gear 404 to rotate. Since the two sets of teeth 403 are staggered, the moving frame 402 and the scraper 410 make horizontal reciprocating motion at the top of the filter 3, which not only prevents impurities in the low-temperature and low-pressure refrigerant vapor from entering the interior of the refrigeration compressor box 1 and causing damage to the internal components of the refrigeration compressor box 1, but also indirectly cleans the filter 3 and prevents it from being blocked. The entire process is driven by wind power, which is more effective and energy-saving.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressor for cold storage refrigeration, comprising a base (11), a refrigeration compression box (1) being fixed on the top of the base (11), characterized in that: A steam pre-storage box (6) and a motor (2) are provided on both sides of the top of the refrigeration compression box (1), a connecting channel (9) is fixed at the bottom of the steam pre-storage box (6), and connecting pipes (10) are provided at both ends of one side of the connecting channel (9), the inside of each connecting pipe (10) is slidably connected to a piston assembly (12), a crankshaft B (15) is fixed at the bottom end of the output shaft of the motor (2), a crankshaft A (13) is rotatably connected to one side of the bottom of the steam pre-storage box (6), a through hole is provided on one side of the interior of the piston assembly (12), the crankshaft A (13) and the crankshaft B (15) both pass through the inside of the through hole, a connecting mechanism (14) is provided on the top of the crankshaft A (13), a temperature sensor (8) is provided on one side of the refrigeration compression box (1), a control panel (18) is provided at one end of the refrigeration compression box (1), and a single-chip microcomputer (19) is provided on one side of the inner wall of the steam pre-storage box (6); The connection mechanism (14) comprises a mounting sleeve (1406) fixed to the top end of the crankshaft A (13); a mounting groove is provided inside the mounting sleeve (1406); an electric push rod (1405) is fixed to the bottom end of the mounting groove; a moving plate (1404) is fixed to the top end of the electric push rod (1405); a spring A (1403) is fixed to the top end of the moving plate (1404); a threaded sleeve (1402) is fixed to the top end of the spring A (1403); a threaded rod (1401) is fixed to the bottom end of the crankshaft B (15); and the threaded rod (1401) is threadedly connected to the threaded sleeve (1402).

2. A cold storage refrigeration compressor according to claim 1, characterized in that: The movable plate (1404) and the threaded sleeve (1402) are both slidably connected to the mounting groove in the vertical direction, and the cross-sections of the threaded sleeve (1402), the movable plate (1404) and the mounting groove are all arranged to be rectangular.

3. A cold storage refrigeration compressor according to claim 1, characterized in that: A limiting sleeve (1407) is fixed to the bottom end of the crankshaft B (15), and the inner wall of the limiting sleeve (1407) is in contact with the outer wall of the threaded sleeve (1402).

4. A cold storage refrigeration compressor according to claim 3, characterized in that: The refrigeration compression box (1) is provided with an air inlet groove (5) inside, and the air inlet groove (5) is connected with the inside of the steam pre-storage box (6); the air inlet groove (5) is provided with a filter screen (3) inside, and the top of the filter screen (3) is flush with the top of the refrigeration compression box (1); a partition (7) is fixed inside the steam pre-storage box (6), and a release mechanism (16) is provided inside the partition (7); a cleaning mechanism (4) is provided at the top of the refrigeration compression box (1), and an air inlet and an air outlet are provided inside the partition (7).

5. A cold storage refrigeration compressor according to claim 4, characterized in that: The release mechanism (16) comprises a receiving groove arranged inside the partition (7), the interior of the receiving groove is slidably connected with a T-shaped rod (1602), the outer side of the T-shaped rod (1602) is sleeved with a spring B (1603), the T-shaped rod (1602) extends out of the interior of the partition (7), and a shielding plate (1601) is fixed to one end of the T-shaped rod (1602) away from the partition (7), and the shielding plates (1601) are provided in two groups, one group of shielding plates (1601) is located at the bottom end of the air inlet, and the other group of shielding plates (1601) is located at the top end of the exhaust port, the bottom end of the shielding plates (1601) at the bottom end of the air inlet is fixed with a trapezoidal cover, and the bottom end of the shielding plates (1601) at the top end of the exhaust port is fixed with an arc-shaped protrusion.

6. A cold storage refrigeration compressor according to claim 4, characterized in that: The cleaning mechanism (4) comprises a movable frame (402) slidably connected to the top of the refrigeration compression box (1); a C-shaped mounting frame (401) is fixed to a side of the cleaning mechanism (4) close to the air inlet groove (5); and a scraper (410) is fixed to the bottom of the C-shaped mounting frame (401) away from the movable frame (402); teeth (403) are provided on the inner wall of the movable frame (402); a mounting rod (408) is rotatably connected to the inside of the steam pre-storage box (6); and the outer side of the mounting rod (408) is A shielding blade (409) is fixed on the side, the mounting rod (408) extends to the outside of the refrigeration compressor box (1), a bevel gear B (407) is fixed on the outside of the mounting rod (408), and the top of the bevel gear B (407) is meshingly connected with a bevel gear A (406), a connecting shaft (405) is fixed on the top of the bevel gear A (406), and an incomplete gear (404) is fixed on the top of the connecting shaft (405), and the incomplete gear (404) is meshingly connected with the teeth (403).

7. A cold storage refrigeration compressor according to claim 6, characterized in that: The shielding blade (409) is located above one side of the air inlet, and two groups of teeth (403) are provided, and the two groups of teeth (403) are staggered.

8. A cold storage refrigeration compressor according to claim 7, characterized in that: The scraper (410) is arranged in a triangular shape in side view, and the bottom end of the scraper (410) fits with the top end of the refrigeration compression box (1).

9. A cold storage refrigeration compressor according to claim 1, characterized in that: The piston assembly (12) comprises a piston head, a connecting rod A and a connecting rod B. The piston head is tightly fitted to the inner wall of the connecting pipe (10). The connecting rod A is fixed to one side of the piston head close to the crankshaft B (15) and the crankshaft A (13), and one side of the connecting rod A is hingedly connected to the connecting rod B. The internal through hole of the piston assembly (12) is arranged on the connecting rod B.

10. A cold storage refrigeration compressor according to claim 9, characterized in that: A rotating block (17) is fixed to the bottom end of the crankshaft A (13), and a rotating groove is provided on the inner side of the bottom of the inner wall of the refrigeration compression box (1), and the rotating groove is rotatably connected to the rotating block (17).

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