CN108273572B - Novel constant temperature and humidity box for aging and blackening red dates - Google Patents

Abstract

The invention relates to a novel constant temperature and humidity box for aging and blackening red dates; comprises a controller, an air pretreatment chamber and a working chamber; the air pretreatment chamber comprises a pretreatment shell; an air inlet device and an air exhaust device which are arranged on the right side surface of the pretreatment shell; a humidifier, a gas circulation pump, a refrigerating device and a heating device inside; the working chamber and the pretreatment chamber shell are fixedly connected together left and right, and the pretreatment chamber and the working chamber are respectively communicated through an upper circulating pipe and a lower circulating pipe; a rotary workbench, a mixing unit and a blade stirrer are sequentially arranged in the working chamber from top to bottom; the invention can reduce the longitudinal temperature and humidity gradient, shorten the mixing time, assist the circulating pump to work to stop the generation of a fixed circulating channel, slow down the secondary evaporation and other effects brought by the circulating pump, provide a better environment for the blackening of the red dates and ensure the quality.

Description

Novel constant temperature and humidity box for aging and blackening red dates

Technical Field

The invention relates to the field of constant temperature and humidity experiment boxes, in particular to a novel constant temperature and humidity box for aging and blackening red dates.

Background

In recent years, based on the rapid increase of the red date yield and the improvement of dietary structure of people, the traditional red date processing technology is examined. The field of deep processing of new red dates is gradually receiving social attention, and some scientific research institutions gradually develop products such as black date wine through aging and blackening of red dates. However, research on aging and blackening of red dates is still in an exploratory stage, and no theoretic knowledge is achieved. Aging and blackening refer to the phenomenon that amino compounds such as proteins, amino acids, aldehydes, ketones and the like contained in foods meet reducing sugar under a damp-heat environment, and brown polymers are generated through a series of reactions. The aging and blackening of the red dates are also carried out in a high-temperature and high-humidity environment provided by people, and the aging and blackening of the red dates are mainly realized by a constant-temperature and constant-humidity box (high-temperature and high-humidity box) at the present stage, which is experimental basic hardware, and the accuracy of the blackening research is directly determined, so that the stability of the constant-temperature and constant-humidity box has important significance for the research of the blackening of the red dates.

The former multifunctional constant temperature and humidity experiment box consists of two parts, namely temperature regulation (heating and refrigerating) and humidification. Through installing the rotating fan at the box internal top, with the humiture that the air discharge was gone into the box realization gas circulation, balanced box in, built-in temperature and humidity sensor gathers data, transmits to temperature and humidity control system and handles, and the instruction of adjusting the temperature and humidity is delivered, through the assistance completion of air heating unit, condenser pipe and the interior heating evaporation unit of basin. The method is used for testing and determining parameters and performances of electrical, electronic and other products and materials after the temperature environment of high temperature, low temperature, alternating humidity or constant test is changed.

The traditional constant temperature and humidity box has various functions, but only depends on a rotary fan to realize internal and external air circulation, the air speed is too small to achieve good mixing effect of hot and humid air, the air speed is too high to cause secondary overevaporation of materials, a fixed circulating air channel is easy to form, and the mixing effect is poor; the longitudinal length of the box working chamber is large, the ratio of width to height is too small, the air temperature has longitudinal gradient, the adjustment ratio also affects the circulation effect, and the temperature and humidity in the box are uneven, thereby affecting the control precision.

Disclosure of Invention

In order to solve the problems, the invention provides a novel constant temperature and humidity box for aging and blackening red dates.

A novel constant temperature and humidity box for aging and blackening red dates comprises a controller, an air pretreatment chamber and a working chamber;

the controller stores environment control application software; the control application software realizes the control of automatic temperature rise, automatic refrigeration, automatic humidification, automatic air intake and exhaust, maintenance of temperature and humidity environment control and the like.

The air pretreatment chamber comprises a pretreatment shell; an air inlet device and an air exhaust device which are arranged on the right side surface of the pretreatment shell; a humidifier, a gas circulation pump, a refrigerating device and a heating device inside; the top of the pretreatment shell is movably connected with a pretreatment chamber upper cover; a controller is arranged on the upper cover of the pretreatment chamber; the controller is respectively connected with the low-speed motor, the gas circulating pump, the temperature sensor, the humidity sensor, the humidifier, the refrigerating device, the heating device, the air inlet device, the air exhaust device and the valve of the working chamber to realize the functions of power supply, data feedback, monitoring control and the like of each component; the left side surface of the pretreatment chamber shell is concaved inwards to the right to form a semicircle and is used for placing a working chamber;

the working chamber is fixedly connected with the pretreatment chamber shell left and right, the height of the working chamber is lower than that of the pretreatment chamber, and the right part of the working chamber is positioned in a concave semicircle of the pretreatment chamber shell; the left side of the upper cover of the pretreatment chamber and the center of the upper cover of the working chamber are coaxially arranged together through a center shaft; the low-speed motor is arranged on the middle shaft and used for driving the stirring shaft to rotate; the stirring shaft drives the rotary workbench and the stirrer to rotate at a low speed.

The pretreatment chamber and the working chamber are respectively communicated through an upper circulating pipe and a lower circulating pipe to provide a closed loop for gas circulation; the top of the pretreatment chamber shell is connected with an upper cover of the working chamber through an upper circulating pipe; the bottom of the pretreatment chamber is provided with a gas circulating pump which is communicated with a lower cover of the working chamber through a lower circulating pipe; the gas circulation pump is used for providing power for gas circulation between the air pretreatment chamber and the working chamber and premixing steam and gas; the bottom of the right side surface of the pretreatment shell is symmetrically connected with two air inlet devices, and the middle of the right side surface is connected with an exhaust device; air filter devices are respectively arranged on the air inlet device and the air outlet device, air impurities are filtered, and the air inlet quality is ensured.

The working chamber consists of a working chamber upper cover and a working chamber lower cover which are respectively and movably fixed at the top and the bottom of the working chamber shell; the working chamber shell is in a hollow cylinder shape; the diameter of the cylinder is larger than the height of the cylinder; the whole working chamber shell is flat; a rotary workbench, a mixing unit and a blade stirrer are sequentially arranged in the working chamber from top to bottom; the mixing unit consists of a mixing unit upper cover, a mixing unit lower cover and a mixing unit body which are sequentially arranged in parallel from top to bottom at equal intervals; the lower end of the stirring shaft sequentially passes through the circle centers of the rotary workbench and the mixing unit and then is fixedly connected with the flat blade stirrer; the upper end of the stirring shaft is connected with a low-speed motor; punching holes are uniformly formed in the rotary workbench along the radius of the rotary workbench; the movable working chamber valve is arranged on the side wall of the working chamber shell which is the same as the rotary workbench in height, so that materials can be conveniently fed and discharged, and the browning condition of the red dates can be conveniently observed; the rotary shaft drives the rotary workbench and the stirrer to rotate, and the mixing unit is fixed relative to the working chamber and does not rotate along with the rotary shaft.

The working chamber upper cover and the working chamber lower cover are both in a truncated cone shape;

the mixing unit body consists of a plurality of protruding small units which are regularly arranged, and each protruding small unit is in a three-dimensional X shape; and punching holes are formed in the upper cover of the mixing unit and the lower cover of the mixing unit, and the diameter of each punching hole is 1mm.

The upper cover of the working chamber is provided with a temperature sensor and a humidity sensor.

The beneficial effects are that:

the working chamber is designed into a flat cylindrical shape, and has a higher aspect ratio; the bottom of the working chamber is provided with a stirrer and a mixing unit for steam and gas; the rotary workbench rotates at a low speed; the bottom is equipped with mixing element and agitator, and auxiliary circulation pump carries out the circulation and the mixture of warm and humid gas, can shorten mixing time, improves the vertical warm and humid gradient in the working chamber, realizes the stability of the warm and humid gas of working chamber even, improves the environmental accuracy that the red date blackened, makes the more even stability of the warm and humid operating mode of gas in the working chamber. The invention can reduce the longitudinal temperature and humidity gradient, shorten the mixing time, assist the circulating pump to work to stop the generation of a fixed circulating channel, slow down the secondary evaporation and other effects brought by the circulating pump, provide a better environment for the blackening of the red dates and ensure the quality.

The invention is different from the common constant temperature and humidity box in that:

the flat (large aspect ratio) cylindrical working chamber is designed, the working table rotates, and a mixing unit is added below the working chamber to perform gas shearing and self-mixing of the X-shaped structure of the mixing unit body; the flat working chamber reduces the longitudinal temperature gradient (the longitudinal temperature in the working chamber with a too low aspect ratio is unbalanced and has longitudinal temperature difference), and the rotating working table is combined to drive the materials to rotate, so that the temperature and humidity environment in the working chamber is more stable, and the feedback data of the temperature and humidity sensor is more accurate; the stirrer driven by the low-speed motor prevents a fixed air circulation path caused by the circulation of mixed gas by the circulation pump, and slows down the secondary evaporation of water in materials caused by too high wind speed; the gas entering the working chamber sequentially passes through the lower end cover with the punched holes and the mixing unit body, so that the gas is subjected to the actions of layered cutting, shearing, X-shaped folding, remixing and the like, the flowing direction is continuously changed, and meanwhile, the axial and peripheral gas exchange is carried out, so that the dispersion and uniform mixing of the three-dimensional space of the gas are ensured; the mixing unit is matched with the circulating pump, so that the gas and the steam are sheared, folded and the like, and the mixing effect is better; the method provides a required damp and hot environment for the brown stain of the red dates entering the rotary workbench at the upper part of the working chamber, ensures the stability of experimental working conditions, and improves the control precision of the constant temperature and humidity box.

Drawings

Fig. 1 is a front view of an assembly of the present invention.

Fig. 2 is an internal structural view of the working chamber.

Fig. 3 is a partial external view of the central mixing unit.

Fig. 4 is a perspective view of a mixing unit.

Fig. 5 is a view showing the whole structure of the assembled body.

In the figure: 1. pretreatment housing, 2, gas inlet means, 3, humidifier, 4, gas circulation pump, 5, refrigerating means, 6, heating means, 7, exhausting means, 8, pretreatment upper cover, 9, control system, 10, upper circulation pipe, 11, low-speed motor, 12, working chamber upper cover, 13, working chamber, 14, working chamber lower cover, 15, working chamber base, 16, lower circulation pipe, 17, stirring shaft, 18, temperature sensor, 19, humidity sensor, 20, working chamber shutter, 21, rotary table, 22, mixing unit upper cover, 23, mixing unit body, 24, mixing unit lower cover, 25, stirrer, 26, X-shaped projection

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a novel constant temperature and humidity box for aging and blackening of red dates comprises a control system 9, an air pretreatment chamber and a working chamber 13.

The control system 9 adopts a PLC controller, the controller is respectively connected with each sensor and all execution components, and environment control software (programmed according to the prior art) is stored in the controller, so that the functions of automatic temperature rise, automatic refrigeration, automatic humidification, automatic air intake and exhaust, stable maintenance of the set temperature and humidity environment and the like in a working chamber can be realized.

The pretreatment chamber is used for pretreatment (heating, cooling and humidifying) of circulating gas in the working chamber, then the pretreated gas enters the working chamber 13 through the circulating pump 4 and the lower circulating pipe 16, and the pretreatment chamber and the working chamber 13 are respectively communicated through the upper circulating pipe 10 and the lower circulating pipe 16 to provide a closed loop for gas circulation.

Pretreatment chamber portion: the pretreatment chamber shell 1 is internally provided with an air inlet device 2, a humidifier 3, a gas circulation pump 4, a refrigerating device 5, a heating device 6, an air exhaust device 7 and the like, wherein the air exhaust device 7 and the two air inlet devices 2 are respectively arranged at the upper and lower parts of the right side surface (front view) of the pretreatment chamber shell, the air exhaust device 2 (an air exhaust fan mechanism with a sealing function) is arranged at the upper part of the right side surface in a middle way, the two air inlet devices 7 (the air inlet fan mechanism with the sealing function) are symmetrically arranged at the lower part of the right side surface, the power of a single air inlet device is smaller than the power of the air exhaust device, when the control system 9 detects that the indoor air needs to be replaced, the two air inlet devices 2 and the air exhaust devices 7 are simultaneously opened, and the working processes of one inlet and one outlet, two inlets and one outlet, only inlet and outlet or only outlet and the like can be realized according to the specific indoor working conditions; the two air inlet devices 2 and the one air outlet device 7 are respectively provided with an air filter for filtering air impurities and ensuring the quality of air inlet. The humidifier 3 feeds back the data to the control system 9 according to the humidity sensor 19, after processing, if the humidity is too low, the humidifier is started to humidify, and after being combined with air mixing, the air is sucked into the working chamber 13 along with the gas circulating pump 4 to be supplemented, and when the humidity sensor 19 detects that the humidity reaches the standard, the control system monitors a signal to close the humidifier 3 (ultrasonic humidifier) to stop steam generation. The gas circulation pump 4 is embedded in the central position of the lower part of the left side surface (front view) of the pretreatment chamber shell 1, is communicated with the working chamber 13 through the lower circulation pipe 16, mainly provides power for gas circulation of two chambers, performs premixing of steam and gas and provides circulating power by matching with the working of the mixing unit body 23. The refrigerating device 5 (adopting a refrigerating compressor) and the heating device 6 (adopting a resistance wire heating principle) are also executing mechanisms, and are matched with the temperature sensor 18 for use, when the temperature is too low, data are transmitted to the control system 9, the control system 9 controls the heating device 6 to work, and the pretreatment chamber gas is heated; the temperature is too high, and information is fed back to the control system 9 through the temperature sensor 18, so that the refrigerating device 5 is started to work, and the temperature of the gas in the pretreatment chamber is reduced. The upper part of the pretreatment chamber is provided with an opening, and the upper cover 8 of the pretreatment chamber is fixed with the pretreatment shell 1 through bolts, sealing rings and the like, so that the disassembly, the cleaning, the inspection and the like are convenient; the fixed control system 9 is embedded above the upper cover 8 of the pretreatment chamber, the control system 9 is an operation center of the whole box body, and is connected with all sensors and executing components such as a temperature sensor 18, a humidity sensor 19, a low-speed motor 11, an exhaust device 7, a heating device 6, a refrigerating device 5, a gas circulation pump 4, a humidifier 3, an air inlet device 2 and the like through a data wire and a power wire, receives feedback information, processes data, sends out instructions and the like, and monitors and controls the operation of the whole box body.

Working chamber portion: the working chamber 13 and the pretreatment chamber shell 1 are characterized in that the height of the left and right fixed working chambers is lower than that of the treatment chamber, the working chamber 13 is the core of the invention, the whole hollow cylinder is designed, the inside of the working chamber is composed of a rotary working table 21 and a lower mixing unit 23, the rotary working table 21 and a stirring shaft 17 at the upper part are fixedly connected through keys, the working chamber is rotated along with a low-speed motor 11, the red date to be browned is placed on the rotary working table 21, the rotary working table 21 is provided with a plurality of punched holes along the radial direction of the rotary working table 21 from the center of the rotary working table, and the rotation is more beneficial to the circulation of indoor gas and the uniformity and consistency of the browning environment of the red date, and the feedback data of a temperature sensor 18 and a humidity sensor 19 are more accurate; a tempered hollow glass working chamber valve 20 is also arranged at the outer side of the cylindrical working chamber 13 and at the central position with the same height as the rotary working table 21, so that materials can be conveniently fed in and fed out and browning conditions can be conveniently observed.

The mixing unit consists of a mixing unit upper cover 22, a mixing unit body 23 and a mixing unit lower cover 24 which are arranged in parallel and equidistantly from top to bottom, and the lower part of the mixing unit is provided with a stirrer 25; the mixing unit body 23, the mixing unit upper cover 22 and the mixing unit lower cover 24 are fixed to the housing of the working chamber 13, and the stirrer 25 is fixed to the stirring shaft 17 by a key connection as with the rotary table 21, and rotates therewith. The stirring shaft 17 drives the rotary table 21 and the stirrer 25 to rotate, and the mixing unit is fixed relative to the working chamber housing and does not rotate together with the stirring shaft 17. The mixing unit body 23 is formed by connecting a plurality of X-shaped convex small units 26 forged by stainless steel into a round whole; punching holes with the diameter of 1mm are formed in the upper cover 22 and the lower cover 24 of the mixing unit, and the punching holes are similar to a single-layer filter screen; the sheared gas has certain power, sequentially passes through the lower end cover 24 with the punched hole and the X-shaped mixing unit body 23 with the middle mixing function, and under the special structure of the mixing unit body 23, the gas is subjected to the actions of layered cutting, shearing, folding, remixing and the like, so that the flowing direction is continuously changed, and meanwhile, the axial and peripheral gas exchange is carried out, so that the dispersion and uniform mixing of the three-dimensional space of the gas are ensured; then the red date brown stain on the rotary workbench at the upper part of the working chamber 13 provides the required damp and hot environment, ensures the stability of experimental working conditions and improves the control precision of the constant temperature and humidity box.

The detachable working chamber upper cover 12 is connected above the working chamber 13, the circular truncated cone-shaped design is beneficial to natural return of gas in the working chamber to the upper part of the working chamber 13, and then the working chamber gas is discharged through the upper circulating pipe 10 communicated with the pretreatment chamber, so that the circulation is more thorough. The upper cover 12 of the working chamber is also fixed with a temperature sensor 18 and a humidity sensor 19, and the flat cylindrical working chamber reduces the influence of longitudinal gradient (longitudinal temperature difference in the working chamber) and ensures the accurate detection effect of the sensor. The temperature sensor 18 and the humidity sensor 19 are both connected to the control system 9 via data lines. The height of the shell of the working chamber 13 is lower than that of the shell of the pretreatment chamber, a semicircular part (concentric with the working chamber) on the left side of the upper cover 8 of the pretreatment chamber is fixed above the upper cover of the working chamber, a low-speed motor is fixedly arranged on the semicircular part of the upper cover 8 of the pretreatment chamber, the low-speed motor is connected with a stirring shaft, and the stirring shaft drives the rotary workbench and the stirrer to rotate at a low speed.

As shown in FIG. 3, the centrally-arranged mixing unit body (namely an X-shaped mixing unit body) designed in the invention can realize the functions of cutting, shearing, turning and the like, re-stirring and mixing by self through the X-shaped special structure under the power provided by the circulating pump, and is uniformly mixed.

The auxiliary components of the control system 9, the refrigerating device 5, the heating device 6, the air inlet device 2, the air exhaust device 7, the humidifier 3 and the like can be purchased according to the size of the incubator, and the invention is convenient for later maintenance and replacement.

According to the invention, the accurate red date browning environment is set through the control system, so that the brown stain research of the red dates is more accurate; the temperature rise, the temperature reduction, the humidification and the like in the working chamber can be automatically realized; various indexes of the indoor environment can be displayed in real time according to the prior art by combining an operation interface, and safety functions such as leakage protection, automatic power-off, timing operation and the like are realized.

The invention can be used as a special high-precision box for the browning of the red dates, can be completely applied to a generalized multifunctional constant temperature and humidity box in the aspect of structural innovation, can be used as a test box in other fields, and has the protection scope of the invention in all stable box environments realized by virtue of similar structural innovation of the mixing unit.

Claims (1)

1. A novel constant temperature and humidity case for ageing black change of red date, its characterized in that: comprises a controller, an air pretreatment chamber and a working chamber;

the controller stores environment control application software; the control application software realizes automatic temperature rise, automatic refrigeration, automatic humidification, automatic air intake and exhaust and maintenance setting temperature and humidity environment control;

the air pretreatment chamber comprises a pretreatment shell; an air inlet device and an air exhaust device which are arranged on the right side surface of the pretreatment shell; a humidifier, a gas circulation pump, a refrigerating device and a heating device inside; the top of the pretreatment shell is movably connected with a pretreatment chamber upper cover; the controller is arranged on the upper cover of the pretreatment chamber; the controller is respectively connected with the low-speed motor, the gas circulating pump, the temperature sensor, the humidity sensor, the humidifier, the refrigerating device, the heating device, the air inlet device, the air outlet device and the working chamber valve through a data transmission line and a power supply line; the left side surface of the pretreatment chamber shell is concaved inwards to the right to form a semicircle and is used for placing a working chamber;

the working chamber is fixedly connected to the left side of the pretreatment chamber shell, the overall height of the working chamber is lower than that of the pretreatment chamber, and the right part of the working chamber is positioned in a concave semicircle of the pretreatment chamber shell; the left semicircular part of the upper cover of the pretreatment chamber and the center of the upper cover of the working chamber are coaxially arranged together through a center shaft; the low-speed motor is arranged on the middle shaft and used for driving the stirring shaft to rotate; the stirring shaft drives the rotary workbench and the stirrer to rotate at a low speed;

the pretreatment chamber and the working chamber are respectively communicated through an upper circulating pipe and a lower circulating pipe to provide a closed loop for gas circulation; the top of the pretreatment chamber shell is connected with an upper cover of the working chamber through an upper circulating pipe; the bottom of the pretreatment chamber is provided with a gas circulating pump which is communicated with a lower cover of the working chamber through a lower circulating pipe; the gas circulation pump is used for providing power for gas circulation between the air pretreatment chamber and the working chamber and premixing steam and gas; the bottom of the right side surface of the pretreatment shell is symmetrically connected with two air inlet devices, and the middle of the right side surface is connected with an exhaust device; the air inlet device and the air outlet device are respectively provided with an air filtering device for filtering air impurities;

the working chamber consists of a working chamber upper cover and a working chamber lower cover which are respectively and movably fixed at the top and the bottom of the working chamber shell; a rotary workbench, a mixing unit and a blade stirrer are sequentially arranged in the working chamber from top to bottom; the mixing unit consists of a mixing unit upper cover, a mixing unit lower cover and a mixing unit body which are sequentially arranged in parallel from top to bottom at equal intervals; the lower end of the stirring shaft sequentially passes through the circle centers of the rotary workbench and the mixing unit and then is fixedly connected with the flat blade stirrer; the upper end of the stirring shaft is connected with a low-speed motor; punching holes are uniformly formed in the rotary workbench along the radius of the rotary workbench; the movable working chamber valve is arranged on the side wall of the working chamber shell which is the same as the rotary workbench in height, so that materials can be conveniently fed and discharged, and the browning condition of the red dates can be conveniently observed; the rotary shaft drives the rotary workbench and the stirrer to rotate, and the mixing unit is fixed relative to the working chamber and does not rotate along with the rotary shaft;

the mixing unit body consists of a plurality of protruding small units which are regularly arranged, and each protruding small unit is in a three-dimensional X shape;

the upper cover of the working chamber is provided with a temperature sensor and a humidity sensor;

the working chamber shell is in a hollow cylinder shape; the diameter of the cylinder is larger than the height of the cylinder; the whole working chamber shell is flat;

the working chamber upper cover and the working chamber lower cover are both in a truncated cone shape;

and punching holes are formed in the upper cover of the mixing unit and the lower cover of the mixing unit, and the diameter of each punching hole is 1mm.