A liquid progressive cooling monitoring system

Abstract

The invention discloses a liquid progressive cooling monitoring system, including a progressive cooling system, a spectrophotometer and a control unit, wherein the progressive cooling system includes a plurality of light-tight sample chambers, any sample chamber is provided with a temperature regulating device, the temperature in the plurality of sample chambers is successively and equally reduced, and a drying member is provided in the sample chamber; the spectrophotometer includes an absorption cell for holding samples, a monochromator for providing monochromatic light to the absorption cell and a detector for detecting that the sample in the absorption cell does not absorb light; the control unit is electrically connected with the temperature regulating device, the monochromator, the detector, the operation panel and the display panel. The invention can effectively perform colorimetric quantitative analysis on sensitive substances such as phenols and metal ions, and can effectively avoid the contradiction of the continuity of the cooling of the wine body, the time difference of the precipitation of higher fatty acid esters and the error of human judgment, so as to improve the accuracy of the freezing test results.

Description

Technical Field

[0001] The invention belongs to the technical field of freezing tests, and in particular relates to a liquid progressive temperature reduction monitoring system. Background Art

[0002] Liquor contains a lot of trace flavor components. After adding pulp, the flavor components mainly composed of higher fatty acid esters are easy to precipitate, causing the wine to lose its gloss and become turbid. In order to ensure that the wine remains clear and transparent at low temperatures, wine companies often use freezing tests to verify it.

[0003] Traditional freezing tests usually place the wine in a refrigerator and measure the temperature and clarity of the wine at intervals, but there are certain limitations in actual operation. For example, the temperature of the wine drops continuously during storage, and the loss of gloss of the wine is a slow precipitation process, which can easily lead to a decrease in the accuracy of the test results; and there is no unified standard to measure the loss of gloss, making it difficult to judge; in addition, when the frozen wine sample is placed in the absorption cell of the laboratory spectrophotometer, the air is easily cooled rapidly and forms mist-like water droplets on the light surface of the absorption cell, thus affecting the test results. Summary of the invention

[0004] In order to overcome the defects of the prior art, the present invention provides a liquid progressive cooling monitoring system, which can improve the accuracy of freezing test results.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] A liquid progressive cooling monitoring system, comprising:

[0007] A progressive cooling system includes a plurality of light-proof sample chambers, each of which is provided with a temperature regulating device, and the temperatures in the plurality of sample chambers are successively reduced in equal amplitudes, and a drying element is provided in the sample chambers;

[0008] A spectrophotometer, the spectrophotometer comprises an absorption cell for containing a sample, a monochromator for providing monochromatic light to the absorption cell, and a detector for detecting light not absorbed by the sample in the absorption cell, the monochromator and the detector are respectively located at two ends of a sample chamber, and the absorption cell is located in the sample chamber;

[0009] The control unit is electrically connected with a temperature regulating device, a monochromator, a detector, an operation panel and a display panel.

[0010] The beneficial effects of adopting the above technical scheme are as follows: the temperature regulating device can keep the sample chamber at a constant temperature for a certain period of time, so as to ensure that the wine sample in the absorption tank is precipitated and stabilized at a fixed temperature before being tested, thereby improving the accuracy of the freezing test results; the drying piece can absorb the water vapor that invades when the sample chamber is opened, so as to effectively avoid the influence of mist water droplets on the test results, thereby further improving the accuracy of the freezing test results; at the same time, the combination of the spectrophotometer and the progressive cooling system can effectively avoid the rapid cooling of the air on the surface of the frozen wine sample after it is removed from the freezing environment, thereby avoiding affecting the accuracy of the freezing test results; in addition, the liquid progressive cooling monitoring system can effectively reflect the degree of wine turbidity consistent with the human observation results through absorbance, which is conducive to establishing a unified standard for measurement, thereby effectively avoiding the inconsistency of the evaluation results of human visual observation.

[0011] In one embodiment, the spectrophotometer includes a light source, and a monochromator, an absorption cell, and a detector are sequentially arranged in the light path direction of the light source.

[0012] The beneficial effects of adopting the above technical solution are: the light source emits a composite continuous spectrum within the required wavelength range, the monochromator decomposes the composite continuous spectrum into monochromatic light, a part of the formed monochromatic light is absorbed by the wine sample in the absorption cell, and the remaining unabsorbed light reaches the detector.

[0013] In one embodiment, the absorption cell is a quartz cell, both end surfaces of the absorption cell close to the monochromator and the detector are light-transmitting surfaces, and both side surfaces and the bottom surface of the absorption cell are frosted surfaces.

[0014] In one embodiment, an incident port for injecting monochromatic light and an exit port for emitting light not absorbed by the sample in the absorption cell are respectively disposed at both ends of the sample chamber, and the incident port and the exit port are coaxial and perpendicular to the end face of the absorption cell.

[0015] The beneficial effects of adopting the above technical solution are: the monochromatic light generated by the monochromator enters the sample chamber from the incident port and vertically shoots to the absorption cell; the light not absorbed by the sample in the absorption cell is shot to the detector from the exit port.

[0016] In one embodiment, the temperature regulating device comprises a temperature sensor for measuring the temperature in the sample chamber and an air supply device for blowing cooling air into the sample chamber, and both the temperature sensor and the air supply device are electrically connected to the control unit.

[0017] The beneficial effect of adopting the above technical solution is that the control unit can control the air supply device to blow cooling air into the sample room according to the temperature inside the sample room measured by the temperature sensor, so as to regulate the temperature inside the sample room and keep the sample room at a constant temperature for a certain period of time.

[0018] In one embodiment, the temperature regulating device comprises an exhaust device electrically connected to the control unit, and the exhaust device is connected to the sample chamber.

[0019] The beneficial effect of adopting the above technical solution is that the exhaust device can exhaust the hot air in the sample chamber to dissipate the heat in the sample chamber.

[0020] In one embodiment, the sample chamber includes a cavity and a cover body covering the upper end of the cavity.

[0021] The beneficial effect of adopting the above technical solution is that the cavity can be used to place the absorption pool, and the absorption pool can be taken out by removing the cover.

[0022] In one embodiment, one end of the cover is hinged to one end of the cavity.

[0023] The beneficial effect of adopting the above technical solution is: such a configuration makes it easy to open the cover and prevents the cover from falling off the cavity.

[0024] In one embodiment, a handle is provided at the upper end of the cover.

[0025] The beneficial effect of adopting the above technical solution is that the cover body can be opened conveniently by using the handle.

[0026] In one embodiment, a base is provided at the bottom of the cavity, and a slot is provided on the base. The cross-sectional dimension of the slot matches the cross-sectional dimension of the absorption pool.

[0027] The beneficial effect of adopting the above technical solution is: the base places the absorption pool through the card slot, and the card slot can limit the absorption pool so that the absorption pool is placed in a predetermined direction, thereby ensuring that the end face of the absorption pool is perpendicular to the incident direction of the monochromatic light.

[0028] The beneficial effects of the present invention are:

[0029] The temperature regulating device can keep the sample chamber at a constant temperature for a certain period of time to ensure that the wine sample in the absorption pool is tested after being precipitated and stabilized at a fixed temperature, thereby improving the accuracy of the freezing test results; the drying piece can absorb the water vapor that invades when the sample chamber is opened to effectively avoid the influence of mist water droplets on the test results, thereby further improving the accuracy of the freezing test results; at the same time, the spectrophotometer is combined with the progressive cooling system to effectively avoid the rapid cooling of the air on the surface of the frozen wine sample after it is removed from the freezing environment, thereby avoiding affecting the accuracy of the freezing test results; in addition, the liquid progressive cooling monitoring system can effectively reflect the degree of wine turbidity consistent with the human observation results through absorbance, which is conducive to establishing a unified standard for measurement, thereby effectively avoiding the inconsistency of the evaluation results of human visual observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0031] Figure 1 The schematic diagram of the structure of the spectrophotometer in the present invention is shown;

[0032] Figure 2 The schematic diagram of the structure of the progressive cooling system in the present invention is shown;

[0033] Figure 3 Shows a schematic diagram of the structure of the present invention;

[0034] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0035] Reference numerals:

[0036] 1-light source, 2-monochromator, 3-absorption cell, 4-detector, 5-electronic circuit, 6-display panel, 7-incident port, 8-temperature sensor, 9-cavity, 10-hinge, 11-cover, 12-handle, 13-base, 14-cooling air, 15-card slot, 16-operation panel, 17-exhaust device. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] The present invention provides a liquid progressive cooling monitoring system, such as Figure 1-3 As shown, it includes:

[0039] The progressive cooling system includes nine sample chambers which are connected in sequence and opaque to each other. Each sample chamber is provided with a temperature regulating device. The temperature in the nine sample chambers is reduced in sequence. A drying element is provided in the sample chambers. The progressive cooling system mainly provides a gradually cooling environment for the absorption pool 3. The cooling range and constant temperature time are adjustable. The progressive cooling system is 140 cm long and 17 cm wide.

[0040] A spectrophotometer, the spectrophotometer comprises an absorption cell 3 for containing a sample, a monochromator 2 for providing monochromatic light to the absorption cell 3, and a detector 4 for detecting light not absorbed by the sample in the absorption cell 3, the monochromator 2 and the detector 4 are respectively located at two ends of a sample chamber, and the absorption cell 3 is located in the sample chamber;

[0041] The control unit is electrically connected to the temperature regulating device, the monochromator 2 , the detector 4 , the operation panel 16 and the display panel 6 .

[0042] It can be understood that the present invention combines a spectrophotometer and a progressive cooling system, adjusts the cooling amplitude, constant temperature time and monochromatic light wavelength, and performs spectrophotometer calibration and zeroing, so as to use monochromatic light of a fixed wavelength to detect the absorbance of the cooled liquid, and can also effectively avoid the contradiction between the continuity of wine cooling, the time difference of the precipitation of higher fatty acid esters and the error of human judgment, thereby effectively improving the accuracy of the wine freezing test; the temperature adjustment device can keep the sample room at a constant temperature for a certain period of time to ensure that the wine sample in the absorption tank 3 is detected after the precipitation is stable at a fixed temperature, thereby improving the accuracy of the freezing test results; The desiccant can absorb the water vapor that invades when the sample chamber is opened, so as to effectively avoid the influence of mist water droplets on the test results, thereby further improving the accuracy of the freezing test results and making the test results more standardized and credible; at the same time, the combination of the spectrophotometer and the progressive cooling system can effectively avoid the rapid cooling of the air on the surface of the frozen wine sample after it is removed from the freezing environment, thereby avoiding affecting the accuracy of the freezing test results; in addition, the liquid progressive cooling monitoring system can effectively reflect the degree of turbidity of the wine through absorbance, which is consistent with the results of human observation, so as to establish a unified standard for measurement, thereby effectively avoiding the inconsistency of the evaluation results of human visual observation.

[0043] In addition, the liquid progressive cooling monitoring system is simple to operate, highly applicable and efficient.

[0044] It should be emphasized that when the spectrophotometer performs colorimetric analysis, the experiment needs to be carried out under stable temperature conditions to ensure the accuracy and repeatability of the data. In particular, when analyzing certain sensitive substances (such as phenols, metal ions, etc.), it is necessary to avoid the influence of factors such as temperature and oxygen on the results. Therefore, the present invention establishes a temperature-controlled constant temperature sample chamber, and nitrogen can be filled into the sample chamber to establish an anaerobic environment, so that the wine sample can be kept at a constant temperature in a certain environment for spectrophotometric quantitative detection, so as to avoid the conversion of the wine sample due to environmental changes, thereby effectively performing colorimetric quantitative analysis on sensitive substances such as phenols and metal ions, so as to further improve the accuracy of the freezing test results.

[0045] It should be noted that the drying element can be a desiccant placed in the sample chamber; using the operation panel 16, the cooling amplitude and constant temperature time of the internal temperature of each sample chamber can be set, the spectrophotometer can be calibrated and zeroed, and the wavelength of monochromatic light can be adjusted; the display panel 6 can display various parameters of the liquid progressive cooling monitoring system.

[0046] In one embodiment, the spectrophotometer includes a light source 1, and a monochromator 2, an absorption cell 3 and a detector 4 are sequentially arranged in the light path direction of the light source 1; wherein the light source 1 has sufficient light intensity and is a stable light source 1.

[0047] It can be understood that the light source 1 emits a composite continuous spectrum within the required wavelength range, and the monochromator 2 decomposes the composite continuous spectrum into monochromatic light. A portion of the formed monochromatic light is absorbed by the wine sample in the absorption cell 3, and the remaining unabsorbed light reaches the detector 4.

[0048] It should be noted that after the unabsorbed light reaches the detector 4 , it is converted from an optical signal into an electrical signal, and after being amplified and processed by the electronic circuit 5 , the detection result is given through the display panel 6 .

[0049] In one embodiment, the absorption cell 3 is a quartz cell, and both end surfaces of the absorption cell 3 close to the monochromator 2 and the detector 4 are light-transmitting surfaces, and both side surfaces and the bottom surface of the absorption cell 3 are frosted surfaces.

[0050] In one embodiment, an incident port 7 for injecting monochromatic light and an exit port for emitting light not absorbed by the sample in the absorption cell 3 are respectively disposed at both ends of the sample chamber. The incident port 7 and the exit port are coaxial and perpendicular to the end surface of the absorption cell 3 .

[0051] It can be understood that the monochromatic light generated by the monochromator 2 enters the sample chamber from the incident port 7 and vertically reaches the absorption cell 3; the light not absorbed by the sample in the absorption cell 3 is emitted from the exit port to the detector 4.

[0052] In one embodiment, the temperature regulating device comprises a temperature sensor 8 for measuring the temperature inside the sample chamber and an air supply device for blowing cooling air 14 into the sample chamber. Both the temperature sensor 8 and the air supply device are electrically connected to the control unit.

[0053] It is understandable that the control unit can control the air supply device to blow cooling air 14 into the sample chamber according to the temperature in the sample chamber measured by the temperature sensor 8, so as to regulate the temperature in the sample chamber and keep the temperature in the sample chamber constant for a certain period of time.

[0054] It should be noted that the temperature sensor 8 can be a metal sensitive temperature measuring rod extending into the sample chamber, with an accuracy of 0.1° C., which is used to accurately measure the temperature inside the sample chamber.

[0055] In one embodiment, the temperature regulating device comprises an exhaust device 17 electrically connected to the control unit, and the exhaust device 17 is connected to the sample chamber.

[0056] It can be understood that the exhaust device 17 can exhaust the hot air in the sample chamber to dissipate heat in the sample chamber.

[0057] It should be noted that grille-type exhaust devices 17 can be provided on both sides of the progressive cooling system; in addition, the exhaust devices 17 can also be used to dissipate heat from electronic components such as control units.

[0058] In one embodiment, the sample chamber includes a cavity 9 and a cover 11 covering the upper end of the cavity 9 .

[0059] It is understandable that the cavity 9 can be used to place the absorption pool 3, and the absorption pool 3 can be taken out by removing the cover 11.

[0060] It should be noted that the cavity 9 and the cover 11 are both made of opaque materials.

[0061] In one embodiment, one end of the cover 11 is hinged to one end of the cavity 9 via a hinge 10 to facilitate opening of the cover 11 and prevent the cover 11 from falling off the cavity 9 .

[0062] In one embodiment, a handle 12 is disposed at the upper end of the cover body 11 to facilitate opening the cover body 11 using the handle 12 .

[0063] In one embodiment, a base 13 is disposed at the bottom of the cavity 9 , and a slot 15 is disposed on the base 13 . The cross-sectional dimension of the slot 15 matches the cross-sectional dimension of the absorption tank 3 .

[0064] It is understandable that the base 13 places the absorption pool 3 through the slot 15, and the slot 15 can limit the absorption pool 3 so that the absorption pool 3 is placed in a predetermined direction, thereby ensuring that the end face of the absorption pool 3 is perpendicular to the incident direction of the monochromatic light.

[0065] It should be noted that when the cooling air 14 is blown in, the cooling air 14 can be blown upward uniformly from all sides below the base 13 , thereby facilitating the cooling of the wine sample in the cavity 9 and the absorption tank 3 .

[0066] In addition, taking a certain blended-flavor wine sample as an example, after actual experimental operation, the cooling amplitude was set to 2°C, the constant temperature time was 4 minutes, and the monochromatic light wavelength was 415nm. The turbidity degree of the wine can be effectively reflected through absorbance, and it is consistent with the results of human observation.

[0067] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A liquid progressive cooling monitoring system, characterized in that: include: A progressive cooling system, wherein the progressive cooling system comprises a plurality of light-proof sample chambers, each of which is provided with a temperature regulating device, and the temperatures in the plurality of sample chambers are successively reduced in equal amplitude, and a drying element is provided in the sample chambers; A spectrophotometer, comprising an absorption cell (3) for containing a sample, a monochromator (2) for providing monochromatic light to the absorption cell (3), and a detector (4) for detecting light not absorbed by the sample in the absorption cell (3), wherein the monochromator (2) and the detector (4) are respectively located at two ends of the sample chamber, and the absorption cell (3) is located in the sample chamber; A control unit, wherein the control unit is electrically connected to the temperature regulating device, the monochromator (2), the detector (4), an operation panel (16) and a display panel (6).

2. A liquid progressive cooling monitoring system according to claim 1, characterized in that: The spectrophotometer comprises a light source (1), wherein the monochromator (2), the absorption cell (3) and the detector (4) are sequentially arranged in the light path direction of the light source (1).

3. A liquid progressive cooling monitoring system according to claim 1, characterized in that: The absorption cell (3) is a quartz cell, and both end surfaces of the absorption cell (3) close to the monochromator (2) and the detector (4) are light-transmitting surfaces, and both side surfaces and the bottom surface of the absorption cell (3) are frosted surfaces.

4. A liquid progressive cooling monitoring system according to claim 1, characterized in that: An incident port (7) for injecting monochromatic light and an exit port for emitting light not absorbed by the sample in the absorption cell (3) are respectively provided at both ends of the sample chamber; the incident port (7) and the exit port are coaxial and perpendicular to the end face of the absorption cell (3).

5. A liquid progressive cooling monitoring system according to claim 1, characterized in that: The temperature regulating device comprises a temperature sensor (8) for measuring the temperature inside the sample chamber and an air supply device for blowing cooling air (14) into the sample chamber. The temperature sensor (8) and the air supply device are both electrically connected to the control unit.

6. A liquid progressive cooling monitoring system according to claim 5, characterized in that: The temperature regulating device comprises an exhaust device (17) electrically connected to the control unit, and the exhaust device (17) is connected to the sample chamber.

7. A liquid progressive cooling monitoring system according to claim 1, characterized in that: The sample chamber comprises a cavity (9) and a cover (11) which is arranged on the upper end of the cavity (9).

8. A liquid progressive cooling monitoring system according to claim 7, characterized in that: One end of the cover body (11) is hinged to one end of the cavity (9).

9. A liquid progressive cooling monitoring system according to claim 7 or 8, characterized in that: A handle (12) is provided at the upper end of the cover body (11).

10. A liquid progressive cooling monitoring system according to claim 7, characterized in that: The bottom of the cavity (9) is provided with a base (13), and the base (13) is provided with a slot (15), and the cross-sectional dimensions of the slot (15) match the cross-sectional dimensions of the absorption pool (3).

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