A device for controlling the temperature of liquid in a cuvette

Abstract

The utility model relates to a device for controlling the temperature of liquid in a cuvette, belonging to the technical field of controlling liquid in a cuvette, comprising a base and a thermometer, wherein a shell is fixed on the top of the base, light holes are provided at both left and right ends of the shell, an ultrasonic probe is fixed inside the front end of the shell, a control component is provided inside the base, the control component comprises a water-cooled heat sink fixed to the inner cavity of the base, a U-shaped water inlet and outlet pipe is fixed inside the water-cooled heat sink, a semiconductor refrigeration sheet is fixed on the top of the water-cooled heat sink, and a copper block is fixed on the top of the semiconductor refrigeration sheet. The device for controlling the temperature of liquid in a cuvette can control the temperature of liquid in the cuvette in real time by being provided with a control component, so as to ensure the stability of the test data of the liquid in the cuvette and reduce the probability that the cuvette is affected by the external temperature, and the thermometer can be stably plugged into the inside of the copper block, so that the thermometer can stably detect the temperature of the copper block.

Description

Technical Field

[0001] The utility model relates to the technical field of controlling cuvette liquid, in particular to a device for controlling the temperature of cuvette liquid. Background Art

[0002] The cuvette is an important device for optical analysis using colorimetry in analytical testing. It is used to position and hold the colorimetric solution during measurement. Since some liquid reactions in the cuvette have very high requirements for the ambient temperature during the measurement process, temperature changes will affect the stability of the measurement data.

[0003] Therefore, it is often necessary to control the temperature of the cuvette, and spectrophotometric analysis experiments mostly rely on color development reactions, and the activity and stability of color development reactions are mostly affected by temperature. Therefore, the accuracy of spectrophotometric analysis experiments is greatly affected by temperature. In daily operations, even if the measurements are performed under the same environment, the unstable room temperature due to seasonal changes can easily cause instability in the test data, making it inconvenient to accurately control the temperature of the cuvette liquid. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a device for controlling the temperature of liquid in a cuvette, which has the advantages of good accuracy and solves the problem of poor accuracy.

[0005] To achieve the above object, the utility model provides the following technical solution: a device for controlling the temperature of a cuvette liquid, comprising a base and a thermometer, a shell is fixed to the top of the base, light holes are opened at both left and right ends of the shell, an ultrasonic probe is fixed inside the front end of the shell, and a control component is arranged inside the base;

[0006] The control component includes a water-cooled heat sink fixed to the inner cavity of the base, a U-shaped water inlet and outlet pipe is fixed inside the water-cooled heat sink, a semiconductor refrigeration plate is fixed on the top of the water-cooled heat sink, a copper block is fixed on the top of the semiconductor refrigeration plate, a spring sheet is provided inside the copper block, and the control component also includes a temperature measuring structure arranged on the rear side of the outer shell.

[0007] Furthermore, a groove is formed at the top of the base, and the water-cooling heat sink is fixed inside the groove.

[0008] Furthermore, two pipe holes are provided at the front end of the water-cooling heat sink, and the U-shaped water inlet and outlet pipes are fixed on the inner sides of the pipe holes.

[0009] Furthermore, a cuvette groove is provided at the top of the copper block, a cuvette through hole is provided at the top of the shell, and the cuvette groove is communicated with the cuvette through hole.

[0010] Furthermore, the spring sheet is fixed to the top of the copper block, the spring sheet is L-shaped, and the other end of the spring sheet is located inside the cuvette tank.

[0011] Furthermore, the front ends of the shell and the copper block are both provided with fixing holes, and the ultrasonic probe is fixed inside the two fixing holes.

[0012] Furthermore, the temperature measuring structure includes a temperature measuring hole opened on the rear side of the copper block, and the temperature measuring structure also includes a horizontal block fixed to the rear side of the outer shell, a horizontal rod is fixed inside the horizontal block, a support block is slidably connected to the outer surface of the cross rod, a fixing plate is fixed to the lower end of the support block, and two push springs are sleeved on the outer surface of the cross rod.

[0013] Furthermore, a circular hole is opened on one side opposite to the two support blocks, the cross bar is slidably connected to the inner side of the circular hole, and the cross block is a rectangle with a hollow interior and a missing lower end.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The device for controlling the temperature of the cuvette liquid is capable of controlling the temperature of the cuvette liquid in real time by being provided with a control component, so as to ensure the stability of the test data of the cuvette liquid and reduce the probability that the cuvette is affected by the external temperature, and the thermometer can be stably plugged into the interior of the copper block, so that the thermometer can stably detect the temperature of the copper block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the inner cavity structure of the shell of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the housing and the side of the base of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the copper block and the temperature measuring hole of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the temperature measurement structure of the utility model.

[0021] In the figure: 1 base, 2 shell, 3 light hole, 4 ultrasonic probe, 51 water cooling heat sink, 52 U-shaped water inlet and outlet pipes, 53 semiconductor refrigeration plate, 54 copper block, 55 spring sheet, 6 temperature measuring hole, 61 cross block, 62 cross bar, 63 support block, 64 fixing plate, 65 push spring, 7 temperature measuring instrument. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 In this embodiment, a device for controlling the temperature of liquid in a cuvette includes a base 1 and a thermometer 7. A shell 2 is fixed to the top of the base 1. Light holes 3 are provided at both left and right ends of the shell 2. An ultrasonic probe 4 is fixed inside the front end of the shell 2. A control component is provided inside the base 1.

[0024] See also Figure 2-4 The control component in this embodiment includes a water-cooled heat sink 51 fixed to the inner cavity of the base 1, a U-shaped water inlet and outlet pipe 52 is fixed inside the water-cooled heat sink 51, a semiconductor refrigeration plate 53 is fixed at the top of the water-cooled heat sink 51, a copper block 54 is fixed at the top of the semiconductor refrigeration plate 53, and a spring sheet 55 is provided inside the copper block 54. The control component also includes a temperature measuring structure arranged on the rear side of the shell 2.

[0025] Among them, a groove is opened at the top of the base 1, and the water-cooled heat sink 51 is fixed inside the groove, so that the water-cooled heat sink 51 can be embedded and installed in the base 1, and the outer shell 2 is a rectangle with a missing lower end, so that the copper block 54 can be connected to the semiconductor refrigeration plate 53, and the inner cavity wall of the outer shell 2 is fixed with thermal insulation cotton, so that the copper block 54 can be isolated from the outside world as much as possible to prevent the temperature of the outer shell 2 from affecting the temperature of the copper block 54.

[0026] Moreover, two pipe holes are provided at the front end of the water-cooled heat sink 51, and the U-shaped water inlet and outlet pipes 52 are fixed on the inner side of the pipe holes, so that the U-shaped water inlet and outlet pipes 52 can be fixed in the water-cooled heat sink 51, and the input end and the output end of the U-shaped water inlet and outlet pipes 52 are connected to an external water cooling device, so that the U-shaped water inlet and outlet pipes 52 can play a role in water cooling and heat dissipation for the water-cooled heat sink 51.

[0027] In addition, a cuvette slot is provided at the top of the copper block 54 , and a cuvette through hole is provided at the top of the housing 2 . The cuvette slot is connected to the cuvette through hole so that the cuvette can be placed in the cuvette slot of the copper block 54 through the cuvette through hole, thereby placing the cuvette in the copper block 54 .

[0028] Meanwhile, fixing holes are provided at the front ends of the housing 2 and the copper block 54 , and the ultrasonic probe 4 is fixed inside the two fixing holes, so that the ultrasonic probe 4 can abut against the cuvette located in the cuvette slot of the copper block 54 .

[0029] In addition, the spring sheet 55 is fixed to the top of the copper block 54 . The spring sheet 55 is L-shaped. The other end of the spring sheet 55 is located inside the cuvette slot. The cuvette can be closely fitted to the ultrasonic probe 4 through the spring sheet 55 .

[0030] See also Figure 3-5 The temperature measuring structure in this embodiment includes a temperature measuring hole 6 opened on the rear side of the copper block 54, and the temperature measuring structure also includes a cross block 61 fixed to the rear side of the shell 2. A cross bar 62 is fixed inside the cross block 61, and a support block 63 is slidably connected to the outer surface of the cross bar 62. A fixing plate 64 is fixed to the lower end of the support block 63, and two push springs 65 are sleeved on the outer surface of the cross bar 62.

[0031] At the same time, a connecting hole is opened on the rear side of the shell 2, and the temperature measuring hole 6 is connected to the connecting hole, so that the thermometer 7 can be plugged into the inside of the copper block 54 through the connecting hole and the temperature measuring hole 6, so that the copper block 54 can be monitored and controlled in real time.

[0032] Secondly, circular holes are opened on the opposite sides of the two support blocks 63, and the cross bar 62 is slidably connected to the inner side of the circular hole, so that the support block 63 can slide outside the cross bar 62. The cross block 61 is a rectangle with a hollow interior and a missing lower end, which is convenient for connecting and fixing the support block 63 with the fixing plate 64.

[0033] It should be noted that the ultrasonic probe 4, the thermometer 7 and the electronic components appearing in the text are all commonly known to the public in the prior art, and the control method is controlled by the temperature control host, which is commonly known to the public in the prior art, and the existing power connection technology and power supply are also common knowledge in the field, and technical personnel in this field can simply program and implement them, and the connection method between the temperature control host and the semiconductor refrigeration plate 53 is also commonly known to the public in the prior art, so the working principle, circuit connection and control method are not elaborated in this article.

[0034] The working principle of the above embodiment is:

[0035] When in use, the temperature of the cuvette is transferred to the copper block 54 by placing the cuvette filled with liquid into the cuvette slot of the copper block 54 through the through hole. The copper block 54 then transfers the high temperature to the semiconductor refrigeration sheet 53 so that the temperature of the cuvette can be controlled. The water-cooled heat sink 51 absorbs and dissipates the heat of the semiconductor refrigeration sheet 53. At the same time, the external water cooling equipment transports water to the U-shaped inlet and outlet water pipe 52 so that the water-cooled heat sink 51 can dissipate heat, thereby ensuring the normal use of the semiconductor refrigeration sheet 53. The two fixed plates 64 are moved back to back so that the fixed plates 64 can push the spring through the support block 63. The spring 65 is squeezed, so that the thermometer 7 can be plugged into the temperature measuring hole 6 of the copper block 54, and the two fixing plates 64 can be loosened, so that the two push springs 65 push the two fixing plates 64 relative to each other through the support block 63, so that the two fixing plates 64 can clamp and fix the thermometer 7, so that the thermometer 7 can be stably located inside the copper block 54, so that the thermometer 7 can stably measure the temperature of the copper block 54, and the thermometer 7 transmits the temperature signal to the temperature control host. The temperature control host outputs electrical power to the semiconductor cooling sheet 53 according to the target temperature value and the current temperature value obtained by feedback, thereby realizing real-time control of the temperature of the cuvette liquid.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for controlling the temperature of a liquid in a cuvette, comprising a base (1) and a temperature measuring instrument (7), characterized in that: A housing (2) is fixed to the top of the base (1), light holes (3) are provided at both left and right ends of the housing (2), an ultrasonic probe (4) is fixed inside the front end of the housing (2), and a control component is provided inside the base (1); The control component comprises a water-cooled heat sink (51) fixed to the inner cavity of the base (1), a U-shaped water inlet and outlet pipe (52) being fixed inside the water-cooled heat sink (51), a semiconductor refrigeration sheet (53) being fixed at the top end of the water-cooled heat sink (51), a copper block (54) being fixed at the top end of the semiconductor refrigeration sheet (53), a spring sheet (55) being provided inside the copper block (54), and the control component further comprises a temperature measurement structure arranged on the rear side of the housing (2).

2. A device for controlling the temperature of a cuvette liquid according to claim 1, characterized in that: The top of the base (1) is provided with a groove, and the water-cooling heat sink (51) is fixed inside the groove.

3. A device for controlling the temperature of a cuvette liquid according to claim 1, characterized in that: The front end of the water-cooling heat sink (51) is provided with two pipe holes, and the U-shaped water inlet and outlet pipes (52) are fixed to the inner sides of the pipe holes.

4. A device for controlling the temperature of a cuvette liquid according to claim 1, characterized in that: A cuvette groove is provided at the top of the copper block (54), a cuvette through hole is provided at the top of the housing (2), and the cuvette groove is in communication with the cuvette through hole.

5. A device for controlling the temperature of a cuvette liquid according to claim 4, characterized in that: The spring sheet (55) is fixed to the top end of the copper block (54), the spring sheet (55) is L-shaped, and the other end of the spring sheet (55) is located inside the cuvette tank.

6. The device for controlling the temperature of a cuvette liquid according to claim 1, characterized in that: The front ends of the housing (2) and the copper block (54) are both provided with fixing holes, and the ultrasonic probe (4) is fixed inside the two fixing holes.

7. The device for controlling the temperature of a cuvette liquid according to claim 1, characterized in that: The temperature measuring structure comprises a temperature measuring hole (6) opened on the rear side of the copper block (54), and the temperature measuring structure also comprises a transverse block (61) fixed to the rear side of the housing (2), a transverse rod (62) is fixed inside the transverse block (61), a support block (63) is slidably connected to the outer surface of the transverse rod (62), a fixing plate (64) is fixed to the lower end of the support block (63), and two push springs (65) are sleeved on the outer surface of the transverse rod (62).

8. The device for controlling the temperature of the liquid in a cuvette according to claim 7, characterized in that: A circular hole is provided on one side opposite to the two support blocks (63), the cross bar (62) is slidably connected to the inner side of the circular hole, and the cross block (61) is in the shape of a rectangle with a hollow interior and a missing lower end.

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