CN111269824A - Mould test box - Google Patents

Mould test box Download PDF

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Publication number
CN111269824A
CN111269824A CN202010195822.5A CN202010195822A CN111269824A CN 111269824 A CN111269824 A CN 111269824A CN 202010195822 A CN202010195822 A CN 202010195822A CN 111269824 A CN111269824 A CN 111269824A
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China
Prior art keywords
chamber
working chamber
sterilization
mould
boiler
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Pending
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CN202010195822.5A
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Chinese (zh)
Inventor
万先锋
胡兰
蔡文城
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Guangzhou Climate Equipment Co ltd
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Guangzhou Climate Equipment Co ltd
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Priority to CN202010195822.5A priority Critical patent/CN111269824A/en
Publication of CN111269824A publication Critical patent/CN111269824A/en
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00Constructional details, e.g. recesses, hinges
    • C12M23/02Form or structure of the vessel
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00Constructional details, e.g. recesses, hinges
    • C12M23/22Transparent or translucent parts
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/18External loop; Means for reintroduction of fermented biomass or liquid percolate
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M37/00Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/30Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
    • C12M41/34Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Microbiology (AREA)
  • General Engineering & Computer Science (AREA)
  • Genetics & Genomics (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Analytical Chemistry (AREA)
  • Clinical Laboratory Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Molecular Biology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

The invention discloses a mould test box which comprises a box body, wherein the box body is provided with a working chamber; the working chamber is provided with a heating and refrigerating device, and the heating and refrigerating device comprises a heater and a refrigerating unit; the humidifying device comprises a boiler, one end of the boiler is connected with the water purifier through an electromagnetic valve, and the other end of the boiler is connected with the working chamber through a humidifying pipe; the ultraviolet sterilization device comprises a sterilization chamber, an ultraviolet lamp set and a centrifugal fan, wherein the ultraviolet lamp set is arranged in the sterilization chamber, and the sterilization chamber, the working chamber and the centrifugal fan are communicated. The invention avoids the overflow of mould spores, reduces the erosion and the harm to testers and the surrounding atmospheric environment, and simultaneously enables the sample to be capable of carrying out temperature and humidity test in the test box filled with the mould spores; the box body has a clear structure, the wire arrangement is orderly, and the centralized maintenance and the repair are convenient; the whole structure is simple, the operation is convenient, the materials are easy to obtain, and the cost is lower.

Description

Mould test box
Technical Field
The invention relates to a mould test box.
Background
The mould test box is a closed space equipment for artificially controlling environmental parameters to quickly culture moulds, and can be used for detecting the mould resistance and the mould development degree of various instruments or electrical and electronic products.
The existing traditional mould test box is not provided with a sterilization device in a ventilation or exhaust channel, so that mould spores are carried by exhaust air of the test box, and after a box door is opened, the mould spores overflow to corrode testers and the surrounding atmospheric environment, so that the human health is harmed.
In addition, the condition equipment that heater, humidifier etc. in the traditional mould proof box detected mould to grow is complicated various, and the circuit is numerous, causes mould proof box volume heavy, and the structure is complicated.
The above disadvantages need to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a mould test box.
The technical scheme of the invention is as follows:
a mould test box comprises a box body, wherein the box body is provided with a working chamber;
the working chamber is provided with
The heating and refrigerating device comprises a heater and a refrigerating unit;
the humidifying device comprises a boiler, one end of the boiler is connected with the water purifier through an electromagnetic valve, and the other end of the boiler is connected with the working chamber through a humidifying pipe;
the ultraviolet sterilization device comprises a sterilization chamber, an ultraviolet lamp set and a centrifugal fan, wherein the ultraviolet lamp set is arranged in the sterilization chamber, and the sterilization chamber, the working chamber and the centrifugal fan are communicated.
According to the mould test box, the box body is further provided with the mechanical chamber and the power distribution cabinet, the heating and refrigerating devices are respectively arranged in the working chamber, the mechanical chamber and the power distribution cabinet, and the ultraviolet sterilization device is arranged outside the working chamber and communicated with the working chamber.
Furthermore, a heat insulation layer is arranged between the box body and the working chamber.
Still further, the heat-insulating layer is made of polyurethane foam board.
Further, the box body comprises a box body shell and a box door, the box door is provided with an observation window, and the box body shell is made of steel plates.
Further, the machine room is provided with a refrigerating unit, and the refrigerating unit comprises the condenser and the compressor.
Further, the machine room is provided with the boiler.
In the mould test box, the working chamber is made of stainless steel.
The ultraviolet sterilization device further comprises a gas collection chamber, the gas collection chamber is connected with the sterilization chamber through an air valve barrel, and the size of the ventilation caliber of the air valve barrel is changed along with the rotation of the rotating shaft.
Furthermore, the rotating shaft is connected with an air valve controller, and the air valve controller drives the rotating shaft to rotate.
Further, the air collection chamber is communicated with the working chamber through an air exhaust pipe.
Further, the rotation axis includes stainless steel axle and silica gel board, the silica gel board passes through the silica gel piece fixed plate to be fixed on the stainless steel axle, the silica gel board sets up inside the space that the blast gate bucket surrounds.
In the above mould test box, the ultraviolet lamp set comprises an ultraviolet lamp and a ballast, the ultraviolet lamp is fixed on the inner surface of the sterilization chamber through an ultraviolet lamp holder, and the ballast is fixed outside the sterilization chamber.
In the mould test box, the boiler is provided with the liquid level switch, and the liquid level switch is connected with and controls the electromagnetic valve through the water level controller.
In the mould test box, the bottom of the box body is provided with the drainage device, the drainage device comprises the drainage joint, and the drainage joint is connected with the drainage pipe.
In the mould test box, the heater is a nichrome heating wire type heater.
In the mould test box, the working chamber is provided with the circulating ventilation device, the circulating ventilation device comprises a circulating fan and a circulating air duct, and the circulating fan, the heater and the evaporator are arranged in the circulating air duct from top to bottom.
Furthermore, the circulating air duct is provided with an air outlet and an air return inlet, the circulating fan drives the gas in the working chamber to enter the circulating air duct from the air return inlet, and the gas sequentially passes through the evaporator, the heater and the circulating fan and returns to the working chamber from the air outlet.
The heating and refrigerating device is connected with the temperature control device, the temperature control device comprises a temperature sensor, an LCD controller and an input and output control panel, the temperature sensor is arranged in the working chamber, the input and output control panel comprises an input module and an output module, the input module is respectively connected with the LCD controller and the temperature sensor, and the output module is connected with the heating and refrigerating device.
Further, the LCD controller is provided with a power supply and a clock module.
Further, the temperature sensor is a platinum resistance temperature sensor, the platinum resistance temperature sensor collects the temperature of the working chamber and sends a signal to the LCD controller through the input module, and the LCD controller sends a control signal to the heater and the refrigerating unit through the output module.
The refrigerating unit comprises an evaporator, an expansion valve, a condenser and a compressor which are connected end to end, gas evaporated by the evaporator enters the condenser through the compressor to form liquid, and the liquid of the condenser enters the evaporator through the expansion valve.
The invention according to the above scheme has the advantages that,
1. the mold spores are prevented from overflowing, the erosion and the damage to testers and the surrounding atmospheric environment are reduced, and meanwhile, the temperature and the humidity of a sample can be tested in a test box filled with the mold spores;
2. the box body has a clear structure, the wire arrangement is orderly, and the centralized maintenance and the repair are convenient;
3. the whole structure is simple, the operation is convenient, the materials are easy to obtain, and the cost is lower.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the internal structure and the circulating ventilation structure of the mold test chamber.
Wherein, in the figures, the respective reference numerals:
1. a box door; 2, LCD control panel; 3. a machine room; 4. a power distribution cabinet; 5. a circulating fan; 6. an ultraviolet sterilization device; 7. a box body; 8. a heater; 9. an evaporator.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "fixed" or "disposed" or "connected" to another element, it can be directly or indirectly located on the other element. The terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and should not be construed as limiting the technical solution.
A mould test box is shown in figures 1 and 2, the main body of the mould test box is a square box body 7, a working chamber is arranged in the box body 7, and mould cultivation work is carried out in the working chamber. The studio is provided with heating and refrigerating plant, ultraviolet sterilization device 6 and humidification device, and heating and refrigerating plant includes heater 8 and refrigerating unit, and ultraviolet sterilization device 6 includes ultraviolet banks, centrifugal fan and sterilization room, and the ultraviolet banks sets up in the sterilization room, centrifugal fan and studio intercommunication, and humidification device includes the boiler, and the boiler passes through humidifying pipe and studio intercommunication. So, the realization is to the change of the temperature and the humidity of studio, and the simultaneously can receive the bactericidal action of ultraviolet banks from the studio combustion gas, does not contain the mould spore in making its combustion gas, and when the chamber door 1 was opened to the proof box simultaneously, the box internal gas received centrifugal fan's negative pressure effect, and direct overflow is not discharged, but through the sterile chamber discharge, prevents the erosion of mould spore to tester or proof box surrounding environment.
The box body 7 comprises a box door 1 and a box body shell. The case body shell is formed by jointing steel plates with the surfaces sprayed with plastics and can be formed by splicing or welding screws. The box door 1 is provided with an observation window, and testers can observe the growth condition of mould in the working chamber and other fungi through the observation window. The box 7 is provided with a working chamber, a mechanical chamber 3 and a power distribution cabinet 4. Be provided with the heat preservation between studio and the box 7, this heat preservation is filled has the good polyurethane foaming board of heat-proof quality, is favorable to stabilizing the temperature in the studio, reduces heating and refrigerating plant's load and energy consumption, reduces because of the adverse conditions of temperature variation to mould growth. The machine room 3 is provided with a refrigerating unit. Each circuit and control panel are integrated in the power distribution cabinet 4, which is beneficial to the centralized maintenance of the circuits and electronic equipment of the test box.
The refrigerating unit comprises an evaporator 9, an expansion valve, a condenser and a compressor which are connected end to end. The refrigerating principle of the refrigerating unit is taken from vapor compression refrigeration, refrigerant liquid such as Freon and the like is used as evaporating liquid or refrigerating liquid, the refrigerating liquid enters an evaporator 9, latent heat of evaporation is absorbed from surrounding objects to be evaporated, low-temperature low-pressure gas is formed after evaporation, high-temperature high-pressure gas is formed by compression through a compressor, the high-temperature high-pressure gas enters a condenser to be cooled to form high-pressure liquid to release heat, and the high-pressure liquid enters the evaporator 9 through an expansion valve to finish primary refrigeration. This cycle causes the ambient temperature around the evaporator 9 to decrease and its heat is released from the condenser. The evaporator 9 is arranged in the working chamber, the condenser is arranged in the machine chamber 3, and a refrigerant is circulated in the working chamber and the machine chamber 3 through a refrigeration pipeline so as to achieve the effect of refrigerating the working chamber.
And a heater 8 in the heating and refrigerating device participates in a circulating ventilation system in the working chamber, and the circulating ventilation device in the circulating ventilation system comprises a circulating fan 5 and a circulating air duct. The top of the channel cover plate of the circulating air duct is provided with an air outlet, and the bottom of the channel cover plate of the circulating air duct is provided with an air return inlet. The circulating air duct is respectively provided with a circulating fan 5, a heater 8 and an evaporator 9 from top to bottom. The circulating fan 5 is used as a power source for air flowing in the working chamber, and under the action of the power source, the air in the working chamber enters the circulating air duct through the air return inlet, passes through the evaporator 9 and the heater 8 from bottom to top, is sucked by the circulating fan 5, is blown out through the air outlet and enters the inside of the working chamber. The temperature of the circulating gas is increased after passing through the heater 8, thereby increasing the temperature in the working chamber.
The heating and refrigerating device is connected with the temperature control device and is controlled by the temperature control device to adjust the temperature in the working chamber. The temperature control device comprises a temperature sensor, an LCD temperature controller and an input/output control panel. The input and output control board comprises an input module and an output module, the temperature sensor is connected with the LCD temperature controller through the input module, and the LCD temperature controller is connected with the heater 8 of the heating and refrigerating device and the refrigerating unit through the output module. The LCD temperature controller comprises a CPU and an LCD control panel 2, the LCD control panel 2 is arranged on the casing of the box body, and the content operation content of the LCD control panel 2 is as follows:
numbering Indicating the content Description of the content
Curve line&Storing Switch to curve representation and curve storage
Monitoring picture Switch to running picture
Operation setting Switching to setting picture of function and operation mode
Program group setting Switch to program setting home screen
Appointment setup Switching to the current time and the reserved time setting picture
Display screen setting Switch to screensaver time setting and version picture
The LCD control panel 2 forms a temperature curve according to the temperature data collected by the temperature sensor, and can write a set temperature command into the CPU, control the heating and refrigerating device and adjust the temperature in the working chamber. In addition, a lithium battery and a clock module are arranged in a storage in the LCD controller, so that the reservation timing function can be realized. The input and output control board is an I/O board.
Temperature sensor sets up in the studio, the temperature information of gathering the studio sends to the LCD temperature controller through input module, the LCD temperature controller is with this temperature information storage to the accumulator, and feed back to on the LCD control panel 2, the experimenter writes into the settlement order through LCD control panel 2, the CPU of LCD temperature controller calculates according to the settlement order and reachs control command, start clock module, send control command to heater 8 and refrigerating unit through output module, make it start or close, with the temperature in this control studio. The LCD temperature controller uses a fuzzy PID control mode, the temperature control precision is high, and the temperature fluctuation degree is small, so that the temperature in the test box is not changed violently, and the growth state of the mold is influenced.
The heater 8 is a nichrome heating wire type heater, and a heating pipe thereof is a stainless steel armored electric heating pipe. The LCD temperature controller adjusts the width through non-contact equal period pulses, controls an analog circuit through a digital signal, and takes PT100 as a temperature sensor, namely a platinum resistor temperature sensor which sends a heating signal to a solid-state relay of the heater 8, thereby controlling the opening and closing of the heater 8.
The humidifying device includes a boiler provided in the machine room 3. The boiler is connected with the water purifier through the electromagnetic valve, the water purifier supplies water to the boiler, the water vapor is formed by heating of the boiler, and the water vapor enters the bottom of the box body 7 along the humidifying pipe to realize the humidifying treatment of the working chamber. A liquid level sensor is arranged in the boiler and connected with an electromagnetic valve so as to stabilize the water quantity in the boiler.
The water vapor generated by the humidifying device inevitably condenses into water in the working chamber and the moisture generated during the growth of the mould, and therefore, a drainage device is arranged at the bottom of the working chamber of the test box to drain the redundant moisture in the working chamber. And a water drainage joint is arranged at the bottom of the box body 7 and is externally connected with a water drainage pipe to discharge waste water in the test box.
The top of the box body 7 is provided with an ultraviolet sterilization device 6, and the ultraviolet sterilization device 6 is communicated with the working chamber through an exhaust air pipe. The ultraviolet sterilization device 6 comprises a gas collection chamber, a sterilization chamber and a centrifugal fan which are all communicated with the working chamber. Ultraviolet banks sets up in the sterilization chamber, and ultraviolet lamp in the ultraviolet banks passes through the ultraviolet lamp stand to be fixed at the top of sterilization chamber, and its switch and ballast stretch to the sterilization chamber outside, and the ballast can not bear high temperature, probably damages because of ultraviolet lamp and the indoor gas of work in the sterilization chamber, and external switch is the switch of ultraviolet lamp for the convenience of experimenter control. The air collection chamber is connected with the sterilization chamber through a cylindrical air valve barrel, and a rotating shaft is arranged in the air valve barrel. The rotating shaft comprises a stainless steel shaft and a silica gel plate, the silica gel plate is fixed on the stainless steel shaft through a silica gel sheet fixing plate, and the size of the silica gel plate is consistent with the caliber of the air valve barrel. The rotating shaft is connected and controlled by the air valve controller, the air valve controller drives the silica gel plate to deflect through the stainless steel shaft, so that a gap is formed between the silica gel plate and the air valve barrel, the caliber of the gap depends on the deflection angle of the silica gel plate, and the air valve controller can control the flow of gas entering the sterilizing chamber from the gas collecting chamber. Under centrifugal fan's effect, the gas in the studio gets into the collection chamber from the exhaust tuber pipe, and blast gate controller control rotation axis deflects, and the indoor gas of collection gets into the sterilization room, under ultraviolet lamp's effect, kills the mould spore in the gas, then gas entering centrifugal fan, the last proof box that discharges.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The mould test box is characterized by comprising a box body, wherein the box body is provided with a working chamber;
the working chamber is provided with
The heating and refrigerating device comprises a heater and a refrigerating unit;
the humidifying device comprises a boiler, one end of the boiler is connected with the water purifier through an electromagnetic valve, and the other end of the boiler is connected with the working chamber through a humidifying pipe;
the ultraviolet sterilization device comprises a sterilization chamber, an ultraviolet lamp set and a centrifugal fan, wherein the ultraviolet lamp set is arranged in the sterilization chamber, and the sterilization chamber, the working chamber and the centrifugal fan are communicated.
2. A mould test chamber as claimed in claim 1, wherein an insulating layer is provided between the chamber and the enclosure.
3. A mold test chamber as claimed in claim 1, wherein the uv sterilization device further comprises a plenum chamber connected to the sterilization chamber via a wind valve barrel, and the size of the ventilation aperture of the wind valve barrel changes with the rotation of the rotating shaft.
4. A mould test chamber as claimed in claim 3, wherein the rotatable shaft is connected to a damper control which rotates the rotatable shaft.
5. A mould test chamber as claimed in claim 3, wherein the rotary shaft comprises a stainless steel shaft and a silicone plate, the silicone plate being secured to the stainless steel shaft by a silicone sheet retaining plate, the silicone plate being disposed within the space enclosed by the air valve barrel.
6. A mould test chamber as claimed in claim 1, wherein the working chamber is provided with a circulating air device comprising a circulating fan and a circulating air duct, the circulating fan, the heater and the evaporator being located in the circulating air duct from top to bottom.
7. A mould test chamber as claimed in claim 6, wherein the circulating air duct is provided with an air outlet and an air return inlet, the circulating fan drives the air in the working chamber from the air return inlet into the circulating air duct, and the air passes through the evaporator, the heater and the circulating fan in sequence and returns to the working chamber from the air outlet.
8. A mold test chamber as claimed in claim 1, wherein the heating and cooling device is connected to a temperature control device, the temperature control device includes a temperature sensor, an LCD controller and an input/output control board, the temperature sensor is disposed in the working chamber, the input/output control board includes an input module and an output module, the input module is connected to the LCD controller and the temperature sensor, respectively, and the output module is connected to the heating and cooling device.
9. A mold test chamber as claimed in claim 8, wherein the temperature sensor is a platinum resistance temperature sensor that collects the chamber temperature and sends a signal through the input module to the LCD controller, which sends a control signal through the output module to the heater and the refrigeration unit.
10. A mold test chamber as claimed in claim 1, wherein the refrigeration unit includes an evaporator, an expansion valve, a condenser and a compressor connected end to end, the evaporator evaporating gas entering the condenser through the compressor to form a liquid, the condenser liquid entering the evaporator through the expansion valve.
CN202010195822.5A 2020-03-19 2020-03-19 Mould test box Pending CN111269824A (en)

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CN112251337B (en) * 2020-10-29 2023-04-07 青海泓辉生物科技有限公司 Multifunctional fermentation device
CN114137161A (en) * 2021-11-26 2022-03-04 湖南溆丰生物科技有限公司 A pesticide inactivation test case for weeds are administered
CN114137161B (en) * 2021-11-26 2024-03-01 湖南溆丰生物科技有限公司 Pesticide inactivation test box for weed control
CN114196514A (en) * 2021-12-19 2022-03-18 安徽飞创仪器设备有限公司 Fungus culture observation box

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