阅读说明：本技术 一种具有分层通风功能的试剂安全通风储存柜 (Safe reagent ventilation storage cabinet with layering ventilation function ) 是由 唐海林 唐圭清 陈林 于 2021-08-05 设计创作，主要内容包括：本发明涉及储存柜技术领域,具体涉及一种具有分层通风功能的试剂安全通风储存柜；包括储存柜、通风组件和调温组件,调温组件包括外壳、压缩机、冷凝器、节流阀、蒸发器、控制阀和加热板。不同的试剂储存的温度不同,对需低温储存试剂储存时,制冷剂在蒸发器中吸收储存柜热量后汽化成为蒸汽,通过压缩机压缩后排入冷凝器,冷凝器冷凝为高压液体,节流阀节流为低压低温的制冷剂,再次进入蒸发器汽化循环制冷试剂,对储存温度比常温高的试剂时,通过加热板工作发热,使储存柜内温度升高,达到试剂储存最适宜温度。解决现有存储柜,无法改变柜内温度,影响储存试剂活性的问题。(The invention relates to the technical field of storage cabinets, in particular to a reagent safety ventilation storage cabinet with a layered ventilation function; including storing cabinet, ventilation subassembly and adjusting temperature the subassembly, the subassembly that adjusts temperature includes shell, compressor, condenser, choke valve, evaporimeter, control valve and hot plate. The temperature that different reagents were stored is different, when storing reagent to needs low temperature, the refrigerant evaporates into steam after absorbing storage cabinet heat in the evaporimeter, discharges into the condenser after compressing through the compressor, the condenser condensation is high-pressure liquid, the choke valve throttle is low pressure microthermal refrigerant, gets into evaporimeter vaporization cycle refrigeration reagent once more, when the reagent of storage temperature ratio normal atmospheric temperature is high, generates heat through the hot plate work, the temperature rise in the messenger storage cabinet, reach reagent storage optimum temperature. The problem of current cabinet, unable change temperature in the cabinet, the active of reagent is stored in the influence is solved.)

1. A reagent safety ventilation storage cabinet with a layered ventilation function is characterized in that,

comprises a storage cabinet, a ventilation assembly and a temperature adjusting assembly, wherein the temperature adjusting assembly comprises a shell, a compressor, a condenser, a throttle valve, an evaporator, a control valve and a heating plate, the shell is fixedly connected with the storage cabinet, and is positioned at the top of the storage cabinet, the compressor is fixedly connected with the shell and positioned in the shell, the condenser is fixedly connected with the compressor, and is positioned at one side of the compressor, the throttle valve is fixedly connected with the condenser and is positioned at one side of the condenser, the evaporator is fixedly connected with the throttle valve, and is fixedly connected with the storage cabinet and positioned in the storage cabinet, the control valve is fixedly connected with the throttle valve, and the heating plate is fixedly connected with the storage cabinet and is positioned in the storage cabinet.

2. The reagent safety ventilation storage cabinet with the layered ventilation function as claimed in claim 1,

the storage cabinet comprises a cabinet body, a cabinet door and a partition board, the cabinet body is fixedly connected with the temperature adjusting assembly and is located on one side of the temperature adjusting assembly, the cabinet door is fixedly connected with the cabinet body and is located on one side of the cabinet body, and the partition board is fixedly connected with the cabinet body and is located in the cabinet body.

3. The reagent safety ventilation storage cabinet with the layered ventilation function as claimed in claim 2,

the storage cabinet further comprises a heat preservation layer and a sealing ring, the heat preservation layer is fixedly connected with the partition plate and located on one side of the partition plate, and the sealing ring is fixedly connected with the cabinet door and located on one side of the cabinet body, close to the cabinet door.

4. The reagent safety ventilation storage cabinet with the layered ventilation function as claimed in claim 2,

the ventilation assembly comprises an air inlet fan, an air outlet fan and an air pipe, wherein the air pipe is fixedly connected with the cabinet body and is located on two sides of the cabinet body, the air inlet fan is fixedly connected with the air pipe and is located on one side of the cabinet body, the air outlet fan is fixedly connected with the air pipe and is located on one side of the cabinet body, and the air pipe is located on one side of the air outlet fan.

5. The reagent safety ventilation storage cabinet with the layered ventilation function as claimed in claim 4,

the ventilation subassembly still includes active carbon adsorption layer and dry layer, the dry layer with admit air fan fixed connection, and be located the admit air fan is kept away from trachea one side, the active carbon adsorption layer with dry layer fixed connection, and be located the dry layer is kept away from admit air fan one side.

6. The reagent safety ventilation storage cabinet with the layered ventilation function as claimed in claim 4,

the ventilation assembly further comprises a waste gas treatment tank and an exhaust pipe, wherein the waste gas treatment tank is fixedly connected with the cabinet body and is located at the bottom of the cabinet body, and the exhaust pipe is fixedly connected with the waste gas treatment tank and is fixedly connected with the air outlet fan and is located between the waste gas treatment tank and the air outlet fan.

7. The reagent safety ventilation storage cabinet with the layered ventilation function as claimed in claim 5,

the temperature regulating assembly further comprises a temperature sensor and a heating wire, the temperature sensor is fixedly connected with the cabinet body and located in the cabinet body and close to one side of the partition, and the heating wire is fixedly connected with the air supply fan and located in the air supply fan and far away from one side of the drying layer.

Technical Field

The invention relates to the technical field of storage cabinets, in particular to a reagent safety ventilation storage cabinet with a layered ventilation function.

Background

Deposit various chemical reagent in the laboratory, some need seal the save, some uncovered also, and to poisonous, when having the reagent of foul smell to deposit, need put in the good cabinet storage of air permeability, all can the layering place, prevent to take place to contact between the reagent gas. The conditions under which each reagent is stored may vary and the activity may vary for different temperature conditions.

The existing storage cabinet has no temperature adjusting device, and cannot store different reagents at different temperatures to influence the activity of the reagents.

Disclosure of Invention

The invention aims to provide a reagent safe ventilation storage cabinet with a layered ventilation function, and aims to solve the problems that the temperature in the cabinet cannot be changed, the activity of stored reagents is influenced, and the storage effect is not ideal in the conventional storage cabinet.

In order to achieve the above purpose, the present invention provides a reagent safety ventilation storage cabinet with a layered ventilation function, comprising a storage cabinet, a ventilation assembly and a temperature adjustment assembly, wherein the temperature adjustment assembly comprises a housing, a compressor, a condenser, a throttle valve, an evaporator, a control valve and a heating plate, the housing is fixedly connected with the storage cabinet and is positioned at the top of the storage cabinet, the compressor is fixedly connected with the housing and is positioned in the housing, the condenser is fixedly connected with the compressor and is positioned at one side of the compressor, the throttle valve is fixedly connected with the condenser and is positioned at one side of the condenser, the evaporator is fixedly connected with the throttle valve and is fixedly connected with the storage cabinet and is positioned in the storage cabinet, the control valve is fixedly connected with the throttle valve and is fixedly connected with the evaporator and is positioned between the evaporator and the throttle valve, the hot plate with store cabinet fixed connection, and be located store in the cabinet, through the compressor the condenser the choke valve with the evaporimeter circulation refrigeration is stored to the reagent that needs cold-stored, the hot plate operation generates heat, stores the higher reagent of temperature.

Wherein, store the cabinet and include the cabinet body, cabinet door and baffle, the cabinet body with the subassembly fixed connection that adjusts the temperature, and be located adjust temperature subassembly one side, the cabinet door with cabinet body fixed connection, and be located cabinet body one side, the baffle with cabinet body fixed connection, and be located the cabinet is internal, through the baffle will the cabinet body divide into the multilayer, cuts apart into a plurality of apothecas, is convenient for place different types of reagent.

Wherein, store the cabinet and still include heat preservation and sealing washer, the heat preservation with baffle fixed connection, and be located baffle one side, the sealing washer with cabinet door fixed connection, and be located the cabinet door is close to cabinet body one side, the heat preservation prevents that the apotheca heat or the air conditioning that the baffle separates are lost, the sealing washer has strengthened the gas tightness of the cabinet body, further strengthen store the effect that the reagent was stored to the cabinet.

Wherein, ventilation assembly is including admitting air the fan, giving vent to anger fan and trachea, the trachea with cabinet body fixed connection, and be located cabinet body both sides, admit air the fan with trachea fixed connection, and be located the trachea is kept away from cabinet body one side, the fan that admits air with trachea fixed connection, and be located the trachea is kept away from fan one side of admitting air, through admit air the fan with the trachea is leading-in with the external air, the fan that admits air with the trachea will the internal air of cabinet is taken out, carries out the ventilation is accomplished in the gas exchange of the cabinet body.

Wherein, the subassembly that ventilates still includes active carbon adsorption layer and dry layer, the dry layer with admit air fan fixed connection, and be located the fan that admits air is kept away from trachea one side, the active carbon adsorption layer with dry layer fixed connection, and be located the dry layer is kept away from admit air fan one side, the large granule material in the active carbon layer adsorbed air prevents that reagent from being contaminated, dry layer dry air prevents that moist air from influencing reagent and stores.

Wherein, the ventilation subassembly still includes exhaust-gas treatment groove and blast pipe, exhaust-gas treatment groove with cabinet body fixed connection, and be located cabinet body bottom, the blast pipe with exhaust-gas treatment groove fixed connection, and with fan fixed connection gives vent to anger, and be located exhaust-gas treatment groove with give vent to anger between the fan, the blast pipe will give vent to anger the air that the fan was derived and arrange exhaust-gas treatment groove handles the emission.

Wherein, the temperature regulating subassembly still includes temperature sensor and heating wire, temperature sensor with cabinet body fixed connection, and be located the internal being close to of cabinet baffle one side, the heating wire with admit air fan fixed connection, and be located the admit air fan is kept away from drying layer one side, temperature sensor detects the internal temperature of cabinet, admit air the fan operation heating air is generated in heating wire work for the apotheca intensifies.

The temperature adjusting assembly further comprises a display screen and a control panel, the display screen is fixedly connected with the cabinet door and located on one side of the cabinet body, the control panel is fixedly connected with the cabinet door and located on one side of the display screen, the display screen displays the temperature of each layer of storage chamber in the cabinet body, and the control cabinet controls the temperature of each layer of storage chamber.

The storage cabinet further comprises a handle and a friction pad, the handle is fixedly connected with the cabinet door and located on one side of the cabinet body, the friction pad is fixedly connected with the cabinet body and located at the bottom of the cabinet body, the handle is convenient to open the cabinet door to store reagents, and the friction pad increases the friction between the cabinet body and the ground.

According to the safe reagent ventilation storage cabinet with the layered ventilation function, the reagent is stored in the storage cabinet, the ventilation assembly is used for ventilating the storage cabinet, the smell of the specially stored reagent is prevented from being mixed and influencing the reagent, the temperature in the storage cabinet is adjusted through the temperature adjusting assembly, various reagents are conveniently stored, the shell provides installation conditions and protection for the temperature adjusting assembly, and the heating plate is internally provided with the heating wire. The temperature that different reagents were stored is different, and when storing the reagent to needs low temperature, the refrigerant was in absorb in the evaporimeter vaporize and become steam after the heat in the storage cabinet, again by discharge after the compressor compression in the condenser, through the condenser is to cooling medium (water or air) heat release, and the condensation is high-pressure liquid, the choke valve throttle is low pressure microthermal refrigerant, gets into the evaporimeter once moreVaporizing a circulating refrigerant agent, wherein the compressor is a BSA418CV-R1AN and the condenser is a DWN-25_，The evaporator is made into a certain shape by a copper pipe or an aluminum pipe and then is installed on a formed copper plate and an aluminum plate by tin welding, the flow of the condensing agent in the evaporator is controlled by the control valve, so that the refrigerating temperature is controlled, and when a reagent with the required storage temperature higher than the normal temperature is stored, the heating wire in the heating plate is electrified to generate heat, so that the temperature in the storage cabinet is increased, and the optimal temperature for storing the reagent is reached. The problem of current cabinet can't change the incasement temperature, influence and store reagent activity, store the effect unsatisfactory is solved.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a reagent safety ventilation storage cabinet with a layered ventilation function provided by the invention;

FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;

FIG. 3 is a top view of the reagent safety ventilation storage cabinet with layered ventilation function provided by the present invention;

FIG. 4 is a cross-sectional view taken along plane B-B of FIG. 3;

fig. 5 is a cross-sectional view of fig. 3 taken along plane C-C.

In the figure: 1-storage cabinet, 2-ventilation component, 3-temperature adjusting component, 11-cabinet body, 12-cabinet door, 13-clapboard, 14-heat preservation layer, 15-sealing ring, 16-handle, 17-friction pad, 21-air inlet fan, 22-air outlet fan, 23-air pipe, 24-active carbon adsorption layer, 25-drying layer, 26-waste gas treatment tank, 27-exhaust pipe, 31-shell, 32-compressor, 33-condenser, 34-throttle valve, 35-evaporator, 36-control valve, 37-heating plate, 38-display screen, 39-control panel, 391-temperature sensor, 392-heating wire.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 5, the present invention provides a reagent safety ventilation storage cabinet with a layered ventilation function, including a storage cabinet 1, a ventilation assembly 2 and a temperature adjustment assembly 3, where the temperature adjustment assembly 3 includes a housing 31, a compressor 32, a condenser 33, a throttle valve 34, an evaporator 35, a control valve 36 and a heating plate 37, the housing 31 is fixedly connected to the storage cabinet 1 and is located at the top of the storage cabinet 1, the compressor 32 is fixedly connected to the housing 31 and is located in the housing 31, the condenser 33 is fixedly connected to the compressor 32 and is located at one side of the compressor 32, the throttle valve 34 is fixedly connected to the condenser 33 and is located at one side of the condenser 33, the evaporator 35 is fixedly connected to the throttle valve 34 and is fixedly connected to the storage cabinet 1 and is located in the storage cabinet 1, the control valve 36 is fixedly connected to the throttle valve 34, and is fixedly connected with the evaporator 35, and is located between the evaporator 35 and the throttle valve 34, and the heating plate 37 is fixedly connected with the storage cabinet 1, and is located in the storage cabinet 1.

In this embodiment, through store 1 cabinet and deposit the reagent, ventilation module 2 operates right store 1 cabinet ventilates, prevents that the reagent smell of special deposit from mixing influence reagent, through the subassembly 3 adjusts the temperature in storing 1 cabinet, is convenient for store multiple reagent, shell 31 is right the subassembly 3 that adjusts the temperature provides installation condition and protection, be equipped with the heating wire in the hot plate 37. The temperature that different reagents were stored is different, and when storing the reagent of need low temperature storage, the refrigerant was in evaporator 35 absorbs behind the heat in the storage cabinet 1 evaporation becomes steam, again by compressor 32 compression back discharge in condenser 33, through condenser 33 is to cooling medium (water or air) heat release, and the condensation is high-pressure liquid, throttle valve 34 throttle is low pressure microthermal refrigerant, gets into evaporator 35 evaporation cycle refrigerant agent again, wherein compressor 32 model is BSA418CV-R1AN, condenser 33 model is DWN-25_，The evaporator 35 is made of copper pipes or aluminum pipes which are made into a certain shape and then installed on a formed copper plate and an aluminum plate by tin welding, a refrigerant enters a pipeline of the evaporator 35, the evaporator 35 absorbs heat in the storage chamber to gasify the refrigerant to absorb heat for refrigeration, the control valve 36 controls the flow rate of the refrigerant in the evaporator 35 so as to control the refrigeration temperature, and when a reagent with the storage temperature higher than the normal temperature is stored, the heating wires in the heating plate 37 are electrified to generate heat, so that the temperature in the storage cabinet 1 is increased, and the optimum temperature for storing the reagent is achieved. The problem of current cabinet can't change the incasement temperature, influence and store reagent activity, store the effect unsatisfactory is solved.

Further, store cabinet 1 and include the cabinet body 11, cabinet door 12, baffle 13, heat preservation 14, sealing washer 15, handle 16 and friction pad 17, the cabinet body 11 with 3 fixed connection of the subassembly that adjusts the temperature, and be located adjust the temperature subassembly 3 one side, cabinet door 12 with cabinet body 11 fixed connection, and be located cabinet body 11 one side, baffle 13 with cabinet body 11 fixed connection, and be located in the cabinet body 11, heat preservation 14 with baffle 13 fixed connection, and be located baffle 13 one side, sealing washer 15 with cabinet door 12 fixed connection, and be located cabinet door 12 is close to cabinet body 11 one side, handle 16 with cabinet door 12 fixed connection, and be located cabinet door 12 is kept away from cabinet body 11 one side, friction pad 17 with cabinet body 11 fixed connection, and be located cabinet body 11 bottom.

In this embodiment, the inspector opens cabinet door 12 down place the reagent that needs to deposit on the baffle 13, close cabinet door 12 forms sealed environment and keeps, baffle 13 will cabinet body 11 divide into the multilayer, cuts apart into a plurality of apothecas, is convenient for place different types of reagent, heat preservation 14 prevents the apotheca heat or the air conditioning that baffle 13 separates are lost, sealing washer 15 has strengthened the gas tightness of cabinet body 11 further strengthens the effect of storing reagent of storage cabinet 1, handle 16 is convenient for open cabinet door 12 deposits the reagent, friction pad 17 increases the friction of cabinet body 11 and ground.

Further, the ventilation assembly 2 includes an air inlet fan 21, an air outlet fan 22, an air pipe 23, an activated carbon adsorption layer 24, a drying layer 25, an exhaust gas treatment tank 26 and an exhaust pipe 27, the air pipe 23 is fixedly connected with the cabinet 11 and is located at both sides of the cabinet 11, the air inlet fan 21 is fixedly connected with the air pipe 23 and is located at one side of the cabinet 11 far away from the air pipe 23, the air outlet fan 22 is fixedly connected with the air pipe 23 and is located at one side of the air outlet fan 22 far away from the air pipe 23, the drying layer 25 is fixedly connected with the air inlet fan 21 and is located at one side of the air pipe 23 far away from the air inlet fan 21, the activated carbon adsorption layer 24 is fixedly connected with the drying layer 25 and is located at one side of the air inlet fan 21 far away from the drying layer 25, the exhaust gas treatment tank 26 is fixedly connected with the cabinet 11 and is located at the bottom of the cabinet 11, the exhaust pipe 27 is fixedly connected to the exhaust gas treatment tank 26, fixedly connected to the exhaust fan 22, and located between the exhaust gas treatment tank 26 and the exhaust fan 22.

In this embodiment, the drying layer 25 is made by the silica gel drier, through admit air fan 21 with trachea 23 is leading-in with the outside air, go out air fan 22 with trachea 23 will air in the cabinet body 11 is taken out, carries out the ventilation is accomplished in the gas exchange of the cabinet body 11, blast pipe 27 will the air that goes out air fan 22 and derive is discharged in exhaust-gas treatment groove 26, discharge after the exhaust-gas treatment solvent treatment who holds wherein, prevent exhaust-gas pollution air, the large granule material in the active carbon adsorption layer absorption 24 air, wherein filtering action prevents that reagent from being polluted, vapor in the drying layer 25 adsorbed air plays the effect of drying air, prevents that moist air from influencing reagent and stores.

Further, the temperature adjustment assembly 3 further includes a display screen 38, a control panel 39, a temperature sensor 391 and a heating wire 392, the display screen 38 is fixedly connected to the cabinet door 12 and located at a side of the cabinet door 12 away from the cabinet body 11, the control panel 39 is fixedly connected to the cabinet door 12 and located at a side of the display screen 38, the temperature sensor 391 is fixedly connected to the cabinet body 11 and located at a side of the cabinet body 11 close to the partition 13, and the heating wire 392 is fixedly connected to the air supply fan 21 and located at a side of the air supply fan 21 away from the drying layer 25.

In this embodiment, the temperature sensor 391 detects the temperature inside the cabinet 11 and transmits the detected temperature to the display 38 for display, the control cabinet controls the temperature adjusting component 3 to adjust the temperature inside each storage chamber, the air supply fan 21 operates, the heating wire 392 works to generate heat to heat the air, and the temperature rise of the storage chambers is accelerated.

The invention discloses a reagent safety ventilation storage cabinet with a layered ventilation function, which comprises a storage cabinet 1, a ventilation assembly 2 and a temperature regulation assembly 3, wherein the storage cabinet 1 comprises a cabinet body 11, a cabinet door 12, a partition plate 13, a heat insulation layer 14, a sealing ring 15, a handle 16 and a friction pad 17, the ventilation assembly 2 comprises an air inlet fan 21, an air outlet fan 22, an air pipe 23, an activated carbon adsorption layer 24, a drying layer 25, a waste gas treatment tank 26 and an exhaust pipe 27, and the temperature regulation assembly 3 comprises a shell 31, a compressor 32, a condenser 33, a throttle valve 34, an evaporator 35, a control valve 36, a heating plate 37, a display screen 38, a control panel 39, a temperature sensor 391 and an electric heating wire 392. The reagent is stored in the storage cabinet 1, the ventilation component 2 is operated to ventilate the storage cabinet 1, and the reagent smell of the specially stored reagent is prevented from being mixed and influencing the reagent, and the reagent passes through the ventilation componentThe temperature adjusting component 3 adjusts the temperature in the storage cabinet 1, so that various reagents can be stored conveniently, and the shell 31 provides installation conditions and protection for the temperature adjusting component 3. The inspector opens the cabinet door 12 toward place the reagent that needs to deposit on the baffle 13, closes the cabinet door 12 and forms sealed environment and keeps, baffle 13 will the cabinet body 11 divide into the multilayer, cuts apart into a plurality of apothecas, is convenient for place different kinds of reagent, heat preservation 14 prevents that apotheca heat or air conditioning that baffle 13 separates are lost, sealing washer 15 has strengthened the gas tightness of the cabinet body 11, further strengthens the effect that stores reagent of storing cabinet 1, handle 16 is convenient for open cabinet door 12 deposits reagent, friction pad 17 increases the friction of the cabinet body 11 and ground, drying layer 25 is made by the silica gel drier, admit air fan 21 with trachea 23 leading-in with the outside air, go out air fan 22 with trachea 23 will the air in the cabinet body 11 is taken out, carries out the ventilation is accomplished in the gas exchange of the cabinet body 11, the exhaust pipe 27 discharges the air guided by the exhaust fan 22 into the exhaust gas treatment tank 26, and discharges the air after being treated by the exhaust gas treatment solvent contained therein, so as to prevent the air from being polluted by the exhaust gas, the active carbon adsorption layer adsorbs 24 large particulate matters in the air, wherein the active carbon adsorption layer prevents the reagent from being polluted by a filtering action, the drying layer 25 adsorbs water vapor in the air, plays a role of drying the air, prevents the humid air from influencing the storage of the reagent, the temperature of different reagents is different, when the reagent is required to be stored at a low temperature, the refrigerant absorbs the heat in the storage cabinet 1 in the evaporator 35 and then vaporizes into steam, and then the steam is compressed by the compressor 32 and then discharged into the condenser 33, the heat is released to a cooling medium (water or air) through the condenser 33, and condensed into high-pressure liquid, and the throttle valve 34 throttles the refrigerant at a low pressure and a low temperature, re-enters the evaporator 35 to vaporize the circulating refrigerant agent, wherein the compressor 32 is model BSA418CV-R1AN and the condenser 33 is model DWN-25_，The evaporator 35 is made by manufacturing copper pipes or aluminum pipes into a certain shape and then installing the copper pipes or the aluminum pipes on a formed copper plate and an aluminum plate by tin welding, refrigerant enters a pipeline of the evaporator 35, the evaporator 35 absorbs heat in a storage chamber to gasify the refrigerant to absorb heat for refrigeration,the control valve 36 controls the flow of the coagulant in the evaporator 35, so as to control the refrigeration temperature, when a reagent with a storage temperature higher than the normal temperature is stored, the heating plate 37 works to generate heat, so that the temperature in the storage cabinet 1 is raised, the optimum temperature for storing the reagent is reached, the temperature sensor 391 detects the temperature in the cabinet body 11 and transmits the temperature to the display screen 38 for displaying, the control cabinet controls the temperature adjusting component 3 to adjust the temperature in each layer of storage chamber, the air inlet fan 21 operates, and the heating wire 392 works to generate heat to heat the air, so as to accelerate the temperature rise of the storage chamber. The problem of current cabinet can't change the incasement temperature, influence and store reagent activity, store the effect unsatisfactory is solved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.