CN215263552U

CN215263552U - Antibody incubator suitable for western blotting

Info

Publication number: CN215263552U
Application number: CN202121343972.2U
Authority: CN
Inventors: 补娟; 史深; 周玲; 王海英; 冯清芷
Original assignee: Peoples Hospital of Xinjiang Uygur Autonomous Region
Current assignee: Peoples Hospital of Xinjiang Uygur Autonomous Region
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-21
Anticipated expiration: 2031-06-16

Abstract

The utility model provides an antibody incubator suitable for western blotting of hatching technical field at the antibody, low temperature environment is provided through micro compressor and evaporimeter, it can rock in the box to drive the box of hatching on the first fixed plate through micro motor drive first fixed plate straight reciprocating motion, it needs regularly to hatch the box and take out the box to rock at low temperature save equipment incubation in-process to hatch the box with the antibody when having solved among the prior art and hatching the antibody, make people's operation more loaded down with trivial details, waste time and energy, the inconvenient problem of operation, can provide suitable incubation temperature simultaneously and the function of rocking, manual operation has been replaced, both convenient the transfer, the cost of labor has also been reduced, time saving and labor saving, it has extensive popularization and application to hatch technical field at the antibody and worth.

Description

Antibody incubator suitable for western blotting

Technical Field

The utility model relates to an antibody incubation technical field, it is specific, the utility model relates to an antibody incubation that is fit for albumen immunoblotting equips technical field.

Background

Western immunoblotting (Western Blot) is a detection technique that combines the blotting technique with the specificity of antigen-antibody reactions and is used to isolate and detect a particular protein in a biological sample. The basic principle is that a mixed protein sample is separated by gel electrophoresis, then is blotted to a solid phase medium (NC membrane or PVDF membrane) by a special siphon or electric field device, a specific antibody aiming at the protein to be detected acts on a filter membrane, and an enzyme degradation substrate coupled on the antibody is utilized to generate a colored precipitate or a chemiluminescent product on the filter membrane, so that the existence and the amount of the protein to be detected are displayed.

The antibody incubation box is a plastic box device with a plurality of divisions sold in the market at present, a PVDF membrane to be detected can be directly placed in the incubation divisions, and then a prepared antibody solution is added, namely the PVDF membrane can be placed in a refrigerator at 4 ℃ for incubation.

However, the traditional incubation box is placed in a low-temperature storage device such as a refrigerator for primary antibody incubation, the incubation time is at least 12 hours, the antibody incubation box needs to be taken out to be checked at regular intervals and placed on a shaking table to shake, fifteen minutes shaking is needed each time, at least three times shaking is needed, or ten minutes shaking is needed each time, at least four times shaking is needed, the antibody incubation box is placed back into the low-temperature storage device to continue incubation after shaking is completed each time, so that the operation of a person is frequent, the operator needs to perform treatment at regular time, time and labor are wasted, and the operation is very inconvenient.

SUMMERY OF THE UTILITY MODEL

To carry out the antibody and hatch and need to hatch the box with the antibody and put and hatch at low temperature save equipment in solving the aforesaid, hatch the in-process and need regularly hatch the box with the antibody and take out and rock for people's operation is more loaded down with trivial details, wastes time and energy, the problem of inconvenient operation, the utility model aims to provide an antibody incubator suitable for albumen immunoblotting, utilize micro compressor to provide low temperature environment, utilize micro motor to make and hatch the box and can regularly rock in the box, replaced manual operation, both conveniently shifted, also reduced the cost of labor, labour saving and time saving, hatch technical field at the antibody and have extensive suitability.

The utility model discloses a realize through following technical scheme:

the utility model provides a pair of antibody incubator suitable for western blotting, including box and case lid, its characterized in that: the box body is hinged with the box cover, the bottom of the box body is provided with a refrigeration chamber, a refrigeration mechanism is arranged outside the refrigeration chamber, and a shaking mechanism is arranged in the refrigeration chamber.

The utility model discloses in, refrigerating mechanism includes micro compressor, evaporimeter and condenser, micro compressor sets up in the refrigeration house outside, the evaporimeter sets up in the indoor lower part of refrigeration, and micro compressor's air inlet is connected with the evaporimeter, and micro compressor's gas outlet is connected with the condenser, is equipped with the capillary between condenser and the evaporimeter.

The utility model discloses in, rocking mechanism includes micro motor, first fixed plate and second fixed plate, micro motor sets up in the refrigeration chamber outside, first fixed plate sets up the upper portion at the indoor evaporimeter of refrigeration.

The utility model discloses in, be provided with the second fixed plate on the first fixed plate, one side that first fixed plate is close to micro motor is equipped with first kicking block, and one side that micro motor was kept away from to first fixed plate is equipped with the second kicking block.

The utility model discloses in, be equipped with the connecting rod on micro motor's the output shaft, the connecting rod tip is equipped with the gyro wheel, and the gyro wheel on first kicking block and the connecting rod suits the setting, is equipped with buffer gear between second kicking block and the box inner wall.

The utility model discloses in, refrigeration room bottom and evaporimeter are equipped with the heat preservation all around.

The utility model discloses in, condenser and capillary all set up in the refrigeration house outside, and the bottom half of condenser below is equipped with the thermovent, and the condenser top is equipped with radiator fan, radiator fan goes up fixedly connected with fan bracket, fan bracket and box fixed connection.

The utility model discloses in, first fixed plate one end is equipped with first splint, and one side that first splint were kept away from to first fixed plate is equipped with the recess, is equipped with the spout on the recess, and the second fixed plate passes through spout and first fixed plate swing joint, one side that first splint were kept away from to the second fixed plate is equipped with second splint.

The utility model discloses in, the one end that first fixed plate was kept away from to the second fixed plate is equipped with elastic mechanism, and the one side of keeping away from first splint in the elastic mechanism other end and the recess contacts each other.

The utility model discloses in, the box back is equipped with the air intake.

The utility model discloses in, be equipped with the controller in the box, be equipped with temperature sensor in the refrigeration room, micro motor, micro compressor, temperature sensor, cooling fan all with controller electric connection, controller and power electric connection.

In the utility model, the end of the box cover and the box body far away from the hinge connection is provided with a buckle which is arranged correspondingly;

the utility model discloses in, the bottom half is equipped with the stabilizer blade.

The utility model discloses in, first kicking block with second kicking block outside shape is the same.

The utility model discloses in, the refrigeration room both sides are equipped with through-hole, both sides the through-hole suits the setting with first kicking block and second kicking block homogeneous phase.

Compared with the prior art, use the utility model provides a pair of antibody incubator suitable for western blotting can obtain following beneficial effect:

(1) the evaporator absorbs heat through the micro compressor in the refrigerating mechanism, the temperature in the refrigerating chamber is reduced, and the heat in the refrigerating chamber is discharged through the cooling fan and the condenser, so that the proper temperature is provided for antibody incubation.

(2) Place and step up the antibody through first fixed plate and second fixed plate and hatch the box, drive the gyro wheel through the motor and promote first fixed plate, realize rocking and the function.

(3) Detect the temperature in the refrigeration chamber through temperature sensor, the power of passing through the controller in time to adjust micro compressor is the suitable temperature of refrigeration chamber moisturizing, it realizes regularly rocking to wave the mechanism through controller control, and the convenient moving as a whole of box, made things convenient for the transfer sampling, the accuracy of having guaranteed the detection, cost of labor and medical personnel's working strength has been reduced, avoided forgetting to lead to appearing the condition that the antibody was hatched the failure, it has extensive popularization and application to hatch technical field at the antibody and worth.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional view showing a top view of the present invention;

FIG. 3 is a schematic sectional view of the top view of the present invention;

fig. 4 is a schematic sectional view showing a top view of the present invention;

FIG. 5 is a schematic view of a refrigerating machine according to the present invention;

fig. 6 is a schematic structural diagram of the rocking mechanism of the present invention.

Reference numerals: 1-box body, 2-box cover, 3-refrigeration chamber, 4-micro compressor, 5-evaporator, 6-condenser, 7-capillary tube, 8-micro motor, 9-first fixing plate, 10-second fixing plate, 11-first top block, 12-second top block, 13-connecting rod, 14-roller, 15-buffer mechanism, 16-heat insulation layer, 17-heat dissipation opening, 18-heat dissipation fan, 19-fan bracket, 20-first clamping plate, 21-second clamping plate, 22-groove, 23-sliding groove, 24-elastic mechanism, 25-air inlet, 26-controller, 27-temperature sensor, 28-buckle, 29-supporting leg and 30-through hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to fig. 1-6, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, but not all of them.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, for convenience of description, the description of the relative position relationship of each component in an antibody incubator suitable for western blotting is described according to the layout of fig. 1, such as: the positional relationship of up, down, left, right, etc. is determined according to the layout direction of fig. 1.

With reference to fig. 1 to 6, the embodiment of the present invention provides an antibody incubator suitable for western blotting, including box 1 and box lid 2, its characterized in that: the top of the box body 1 is provided with a box cover 2, the box body 1 is hinged with the box cover 2, the bottom of the box body 1 is provided with a refrigeration chamber 3, a refrigeration mechanism is arranged outside the refrigeration chamber 3, and a shaking mechanism is arranged in the refrigeration chamber 3.

The utility model discloses in, refrigerating mechanism includes micro compressor 4, evaporimeter 5 and condenser 6, micro compressor 4 sets up in the 3 outsides of refrigeration chamber, evaporimeter 5 sets up the lower part in refrigeration chamber 3, micro compressor 4's air inlet and evaporimeter 5 are connected, micro compressor 4's gas outlet and condenser 6 are connected, be equipped with capillary 7 between condenser 6 and the evaporimeter 5, make the refrigerant absorb the heat in refrigeration chamber 3 in evaporimeter 5 after, vaporize into low temperature low pressure steam and inhaled by micro compressor 4, compress into condenser 6 behind the high pressure high temperature steam, through the outside heat of discharging of condenser 6, realize for the refrigerated purpose of refrigeration chamber 3 cooling, capillary 7 can reduce the pressure and the cold and hot exchange efficiency of the high pressure liquefaction refrigerant that micro compressor 4 sent.

The utility model discloses in, wave mechanism includes micro motor 8, first fixed plate 9 and second fixed plate 10, micro motor 8 sets up in the 3 outsides of refrigeration chamber, first fixed plate 9 sets up the upper portion of evaporimeter 5 in refrigeration chamber 3, and the refrigeration mechanism for wave mechanism cooling refrigeration in being convenient for through refrigeration chamber 3 is hatched the box and is provided suitable incubation temperature, convenient to use for the antibody.

In the utility model, a second fixing plate 10 is arranged on the first fixing plate 9, a first top block 11 is arranged on one side of the first fixing plate 9 close to the micro motor 8, a second top block 12 is arranged on one side of the first fixing plate 9 far from the micro motor 8, a connecting rod 13 is arranged on the output shaft of the micro motor 8, a roller 14 is arranged at the end part of the connecting rod 13, the first top block 11 is arranged corresponding to the roller 14 on the connecting rod 13, a buffer mechanism 15 is arranged between the second top block 12 and the inner wall of the box body 1, the connecting rod 13 is driven to rotate by the rotation of the micro motor 8, the connecting rod 13 drives the roller 14 to rotate around the output shaft of the micro motor 8, the roller 14 pushes the first top block 11 after rotating to the first top block 11, so that the first top block 11 drives the first fixing plate 9 to move to one side far away from the micro motor 8, the first fixing plate 9 resets under the action of the buffer mechanism 15 after the roller 14 leaves the first top block 11, after putting into the antibody between first fixed plate 9 and second fixed plate 10 and hatching the box, micro motor 8 continuously rotates and makes first fixed plate 9 drive the antibody and hatch the box and rock automatically, has solved and has needed artifical regularly manual problem of rocking when carrying out the antibody and hatching the box among the prior art.

The utility model discloses in, be equipped with heat preservation 16 around refrigeration room 3 bottoms and evaporimeter 5, reduced the heat transfer rate in the refrigeration room 3, improve the practicality.

The utility model discloses in, condenser 6 and capillary 7 all set up in the 3 outsides of refrigeration house, and 1 bottom of box of condenser 6 below is equipped with

thermovent

17, and 6 tops of condenser are equipped with radiator fan 18, and radiator fan 18 goes up fixedly connected with fan bracket 19, and

fan bracket

19 and 1 fixed connection of box accelerate the cooling of condenser 6 through radiator fan 18, blow off the heat from thermovent 17, have improved the radiating efficiency of condenser 6.

In the utility model, a first clamping plate 20 is arranged at one end of the first fixing plate 9, a groove 22 is arranged at one side of the first fixing plate 9 far away from the first clamping plate 20, a chute 23 is arranged in the groove 22, the second fixing plate 10 is movably connected with the first fixing plate 9 through the chute 23, a second clamping plate 21 is arranged at one side of the second fixing plate 10 far away from the first clamping plate 20, an elastic mechanism 24 is arranged at one end of the second fixing plate 10 far away from the first fixing plate 9, the other end of the elastic mechanism 24 is mutually contacted with one side of the groove 22 far away from the first clamping plate 20, the second fixing plate 10 moves in the groove 22 on the first fixing plate 9, the first clamping plate 20 on the first fixing plate 9 and the second clamping plate 21 on the second fixing plate 10 are always subjected to the force of relative movement through the action of the elastic mechanism 24, so as to be convenient for placing and clamping the antibody incubation box through the first clamping plate 20 and the second clamping plate 21, prevent the antibody from incubating and falling off when the first fixing plate 9 shakes.

The utility model discloses in, the box 1 back is equipped with air intake 25, can accelerate the circulation of air in the box 1, improves radiator fan 18's work efficiency.

In the utility model, a controller 26 is arranged in the box body 1, a temperature sensor 27 is arranged in the refrigerating chamber 3, the micro motor 8, the micro compressor 4, the temperature sensor 27 and the cooling fan 18 are all electrically connected with the controller 26, the controller 26 is electrically connected with the power supply, the temperature in the refrigerating chamber 3 is detected through the temperature sensor 27, the controller 26 can control the start and stop of the micro compressor 4 according to the detected temperature in time, and the incubation temperature is controlled; controlling the shaking time and/or interval time by the controller 26; the controller 26 controls the stop and start of the cooling fan 26, so that the waste of energy caused by the idle running of the cooling fan 18 when incubation is not needed is avoided.

The utility model discloses in, the one end that case lid 2 and box 1 kept away from the hinge and are connected is equipped with the buckle 28 that suits the setting, is that case lid 2 can with 1 block of box, further reduces the heat exchange efficiency of refrigeration room 3, avoids external environment to influence incubation process simultaneously.

The utility model discloses in, 1 bottom of box is equipped with stabilizer blade 29, and the 1 leveling of box of being convenient for provides sufficient space for thermovent 17 simultaneously, is favorable to condenser 6 heat dissipation.

The utility model discloses in, first kicking block 11 with the second kicking block 12 outside shape is the same, and 3 both sides in refrigeration room are equipped with through-hole 30, both sides through-hole 30 and first kicking block 11 and the setting of 12 homogeneous phase adaptations of second kicking block, through-hole 30 restriction first kicking block 11 and second kicking block 12 make first fixed plate 9 rock when keeping straight line reciprocal rocking, avoid first fixed plate 9 to follow and refrigerate indoor droing.

When the utility model is used, after the antibody diluted by the sealing liquid is put into the antibody incubation box, the buckle 28 is opened so as to open the box cover 2, one end of the antibody incubation box is supported against the second clamping plate 21 on the second fixing plate 10 and is pushed in the direction far away from the first clamping plate 20 until the antibody incubation box can be placed between the first clamping plate 20 and the second clamping plate 21, then the antibody incubation box is loosened, the second fixing plate 10 keeps the force extruded to one end of the first clamping plate 20 under the action of the elastic mechanism 24, the antibody incubation box is clamped by the first clamping plate 20 on the first fixing plate 9 and the second clamping plate 21 on the second fixing plate 10 through the first fixing plate 9 and the second fixing plate 11, the antibody incubation box is prevented from falling off accidentally, then the incubation temperature is set through the controller 26, the micro compressor 4 starts to work, the evaporator 5 connected with the micro compressor 4 absorbs the temperature around the evaporator 5, the heat is dissipated through the condenser 6, the heat dissipating fan 18 is arranged above the condenser 6, the bottom of the box body 1 below the condenser 6 is provided with the heat dissipating port 17, the bottom of the box body 1 is provided with the support legs 29, the back of the box body 1 is provided with the air inlet 25, the heat dissipating fan 18 can suck air from the air inlet 25 and discharge the air from the heat dissipating port 17 at the bottom of the box body 1 when working, the heat dissipation of the condenser 6 is accelerated, the heat absorption efficiency of the evaporator 5 is improved, the cooling chamber 3 is cooled, the temperature in the cooling chamber 3 is detected in real time through the temperature sensor 27 in the cooling chamber 3, so that the controller 26 can timely and automatically adjust the power of the micro compressor 4, and the proper incubation temperature is provided for the cooling chamber 3; be equipped with micro motor 8 outside refrigeration room 3, be equipped with connecting rod 13 on micro motor 8's the output shaft, connecting rod 13 tip is equipped with gyro wheel 14, one side that first fixed plate 9 is close to micro motor 8 is equipped with first kicking block 11, the time interval of micro motor 8 start is set for through controller 26, realize regularly automatic hatching box to the antibody and rock, it rotates to drive connecting rod 13 when micro motor 8 starts, connecting rod 13 drives gyro wheel 14 and rotates around micro motor 8's output shaft, it can promote first kicking block 11 to remove to the one side of keeping away from micro motor 8 to continue to rotate after gyro wheel 14 contacts first kicking block 11, first kicking block 11 drives first fixed plate 9 and removes, be equipped with second fixed plate 10 on first fixed plate 9, the antibody has been placed between first fixed plate 9 and the second fixed plate 10 and has been hatched the box, first fixed plate 9 removes and can drive the antibody and hatches the box and remove, first fixed plate 9 makes first fixed plate under buffer gear's 15 effect after gyro wheel 14 continues to rotate and leaves first kicking block 12 A fixed plate 9 removes 4 one sides of micro motor, box removal is hatched to first fixed plate 9 drive antibody, micro motor 8 when lasting the rotation, first fixed plate 9 realizes straight reciprocating motion under gyro wheel 14 and buffer gear 15's the usefulness, the through-hole 30 of 3 both sides in refrigeration room can restrict the longitudinal displacement of first kicking block 11 and second kicking block 12, prevent that first fixed plate 9 from droing, the realization is hatched the box and is rocked the antibody, utilize micro compressor 4 to provide low temperature environment, utilize micro motor 8 to make and hatch the box and can rock regularly in box 1, manual operation has been replaced, both convenient the transfer, and the cost of labor has also been reduced, it regularly rocks to need not operating personnel, time saving and labor saving, provide good condition of hatching for the antibody is hatched, the technical field has extensive suitability at the antibody is hatched.

The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding and the like in the prior art, the machines, parts and equipment adopt the conventional models in the prior art, the control mode is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the control circuit belongs to the common knowledge in the field, and the present application document is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the present application.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an antibody incubator suitable for western blotting, includes box (1) and case lid (2), its characterized in that: the top of the box body (1) is provided with a box cover (2), the box body (1) is hinged with the box cover (2), the bottom of the box body (1) is provided with a refrigerating chamber (3), a refrigerating mechanism is arranged outside the refrigerating chamber (3), and a shaking mechanism is arranged in the refrigerating chamber (3);

the refrigeration mechanism comprises a micro compressor (4), an evaporator (5) and a condenser (6), the micro compressor (4) is arranged on the outer side of the refrigeration chamber (3), the evaporator (5) is arranged on the lower portion in the refrigeration chamber (3), an air inlet of the micro compressor (4) is connected with the evaporator (5), an air outlet of the micro compressor (4) is connected with the condenser (6), and a capillary tube (7) is arranged between the condenser (6) and the evaporator (5);

the shaking mechanism comprises a micro motor (8), a first fixing plate (9) and a second fixing plate (10), the micro motor (8) is arranged on the outer side of the refrigerating chamber (3), the first fixing plate (9) is arranged on the upper portion of the evaporator (5) in the refrigerating chamber (3), the second fixing plate (10) is arranged on the first fixing plate (9), a first ejector block (11) is arranged on one side, close to the micro motor (8), of the first fixing plate (9), and a second ejector block (12) is arranged on one side, far away from the micro motor (8), of the first fixing plate (9); a connecting rod (13) is arranged on an output shaft of the micro motor (8), a roller (14) is arranged at the end part of the connecting rod (13), the first ejector block (11) is matched with the roller (14) on the connecting rod (13), and a buffer mechanism (15) is arranged between the second ejector block (12) and the inner wall of the box body (1).

2. An antibody incubator suitable for western blotting according to claim 1, wherein: and heat insulation layers (16) are arranged at the bottom of the refrigerating chamber (3) and around the evaporator (5).

3. An antibody incubator suitable for western blotting according to claim 1, wherein: condenser (6) and capillary (7) all set up in the refrigeration chamber (3) outside, and box (1) bottom of condenser (6) below is equipped with thermovent (17), and condenser (6) top is equipped with radiator fan (18), fixedly connected with fan bracket (19) on radiator fan (18), fan bracket (19) and box (1) fixed connection.

4. An antibody incubator suitable for western blotting according to claim 1, wherein: a first clamping plate (20) is arranged at one end of the first fixing plate (9), a groove (22) is arranged on one side, away from the first clamping plate (20), of the first fixing plate (9), a sliding groove (23) is formed in the groove (22), the second fixing plate (10) is movably connected with the first fixing plate (9) through the sliding groove (23), and a second clamping plate (21) is arranged on one side, away from the first clamping plate (20), of the second fixing plate (10); one end, far away from the first fixing plate (9), of the second fixing plate (10) is provided with an elastic mechanism (24), and the other end of the elastic mechanism (24) is in mutual contact with one side, far away from the first clamping plate (20), in the groove (22).

5. An antibody incubator suitable for western blotting according to claim 1, wherein: and an air inlet (25) is formed in the back of the box body (1).

6. An antibody incubator suitable for western blotting according to claim 3, wherein: be equipped with controller (26) in box (1), be equipped with temperature sensor (27) in refrigeration room (3), micro motor (8), micro compressor (4), temperature sensor (27), radiator fan (18) all with controller (26) electric connection.

7. An antibody incubator suitable for western blotting according to claim 1, wherein: one end of the box cover (2) far away from the hinged connection with the box body (1) is provided with a buckle (28) which is arranged correspondingly; the bottom of the box body (1) is provided with a support leg (29).

8. An antibody incubator suitable for western blotting according to claim 1, wherein: the shape of the outer side of the first ejector block (11) is the same as that of the outer side of the second ejector block (12), through holes (30) are formed in two sides of the refrigerating chamber (3), and the through holes (30) are matched with the first ejector block (11) and the second ejector block (12) in two sides.