Efficient temperature control structure

Abstract

The utility model relates to an efficient temperature control structure which comprises an annular piece, a flow channel assembly, a heating assembly and a detection assembly. One side of the annular piece is connected with a first upper platform, and the first upper platform is connected with the detection assembly; the runner assembly is arranged on the inner side of the annular piece and connected with the side wall of the first upper platform. The heating assembly is arranged on the side, away from the first upper platform, of the runner assembly. The runner assembly comprises a first circular ring, a second circular ring and a third circular ring; the first circular ring, the second circular ring and the third circular ring are connected to the inner side wall of the first upper platform, a first nitrogen runner is formed between the outer wall of the first circular ring and the inner wall of the second circular ring, and a second nitrogen runner is formed between the outer wall of the second circular ring and the inner wall of the third circular ring. The high-efficiency temperature control structure provided by the utility model aims to overcome the defects in the prior art, and has the advantages of uniform temperature, quick response and accurate temperature control.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -efficient temperature control structure. BACKGROUND

[0002] Temperature control unit is the key equipment of laboratory instrument, is used for accurate control sample temperature, from the past simple thermostat to the system of complex liquid nitrogen cooling and electric heating combination,

[0003] In the existing liquid nitrogen + electric heating temperature control system, including third nitrogen gas flow channel 1, third nitrogen gas inlet and outlet 2, second electric heating 3, electric heating fixed mouth 4, temperature measuring mouth 5, second upper platform 6, second lower platform 7 and second light transmission hole 8 (as shown in Figure 1 、 2 Indicated);

[0004] Low temperature nitrogen enters third nitrogen gas flow channel 1 through third nitrogen gas inlet and outlet 2 and gives second upper platform 6 cooling, gives second upper platform 6 heating through second electric heating 3, measures the temperature of second upper platform 6 through temperature sensor installed in temperature measuring mouth 5 to realize the temperature control of unit platform to feedback control nitrogen flow and electric heating power in control unit;

[0005] The current temperature control structure because the distance of outer ring flow channel from the center hole is too far, plus the position interference of electric heating causes the uneven distribution of platform surface temperature, influences sample state and observation result;In addition, the temperature measuring mouth position distance is too far, cannot accurately determine the center sample temperature, causes the deviation of temperature control result;Therefore, aiming at the above problems, a kind of high -efficient temperature control structure is provided. INVENTION CONTENTS

[0006] The utility model discloses a kind of high -efficient temperature control structures to overcome the defects of the prior art, with the advantages of temperature uniform, fast response, temperature control precision.

[0007] The technical scheme to achieve the above-mentioned purposes is: a kind of high -efficient temperature control structure, including annular part, flow channel assembly, warming assembly and detection assembly;

[0008] The side of the annular part is connected with a first upper platform, and the detection assembly is connected to the first upper platform;The flow channel assembly is arranged on the inner side of the annular part and connected with the lower side wall of the first upper platform;The warming assembly is arranged on the side of the flow channel assembly away from the first upper platform.

[0009] Preferably, the flow channel assembly includes a first circular ring, a second circular ring and a third circular ring;The first circular ring, the second circular ring and the third circular ring are all connected to the inner side wall of the first upper platform, and a first nitrogen gas flow channel is formed between the outer wall of the first circular ring and the inner wall of the second circular ring, and a second nitrogen gas flow channel is formed between the outer wall of the second circular ring and the inner wall of the third circular ring.

[0010] Preferably, the heating assembly comprises an electric heating ring, a first gasket and a second gasket; the electric heating ring is arranged between the first gasket and the second gasket, and the first gasket is connected to the upper end of the first ring, the second ring and the third ring.

[0011] Preferably, the detection assembly comprises a temperature sensor, and the temperature sensor is fixedly connected to the upper side wall of the first upper platform.

[0012] Preferably, a first nitrogen inlet and a first nitrogen outlet are arranged on the side wall of the ring-shaped member respectively, and the first nitrogen inlet and the first nitrogen outlet are communicated with the first nitrogen flow channel and the second nitrogen flow channel.

[0013] Preferably, a hollow cylinder is connected to the inner side wall of the first upper platform, and the inner wall of the first ring is connected to the hollow cylinder.

[0014] Preferably, a first light-transmitting hole is arranged at the center of the first upper platform.

[0015] Preferably, the outer wall of the third ring is close to the inner wall of the ring-shaped member, and the outer walls of the first gasket and the second gasket are close to the inner wall of the ring-shaped member and cover the first ring, the second ring and the third ring.

[0016] The high-efficiency temperature control structure has the advantages that: the first nitrogen flow channel and the second nitrogen flow channel are directly contacted with the first upper platform, the electric heating ring is fixed on the first ring, the second ring and the third ring through the gasket after sealing by welding, and the first nitrogen flow channel and the second nitrogen flow channel are heated and warmed up; in addition, the arrangement position of the temperature sensor is changed to form a temperature feedback regulation mechanism; the temperature uniformity of the system can be improved, the heat exchange efficiency can be improved, and the temperature measurement precision control effect can be improved; thus, the temperature is uniform, the response is fast, and the temperature control is accurate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a first perspective view of the prior art;

[0018] Figure 2 is a second perspective view of the prior art;

[0019] Figure 3 is an exploded view of the high-efficiency temperature control structure of the utility model;

[0020] Figure 4 is an internal detail view of the high-efficiency temperature control structure of the utility model;

[0021] Figure 5It is external detail view of high efficient temperature control structure.

[0022] In the figure: 9, annular part; 10, first upper platform; 11, first circular ring; 12, second circular ring; 13, third circular ring; 14, first nitrogen flow channel; 15, second nitrogen flow channel; 16, first nitrogen inlet; 17, first nitrogen outlet; 18, electric heating ring; 19, first sealing gasket; 20, second sealing gasket; 21, temperature sensor; 22, hollow cylinder; 23, first light transmission hole. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be described clearly and completely below in connection with the drawings. In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation. Therefore, it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0024] The utility model will be further described below in connection with the drawings.

[0025] As Figures 3-5 shown, a kind of high efficient temperature control structure, including annular part 9, flow channel assembly, warming assembly and detection assembly;Annular part 9 one side is connected first upper platform 10, and first upper platform 10 is connected detection assembly;Flow channel assembly is set in annular part 9 inner side, and is connected with the lower side wall of first upper platform 10;Warming assembly is set in the side of flow channel assembly deviating from first upper platform 10.

[0026] As Figure 3 shown, flow channel assembly includes first circular ring 11, second circular ring 12 and third circular ring 13;First circular ring 11, second circular ring 12 and third circular ring 13 are all connected on the inner side wall of first upper platform 10, and first circular ring 11 outer wall and second circular ring 12 inner wall form first nitrogen flow channel 14, and second circular ring 12 outer wall and third circular ring 13 inner wall form second nitrogen flow channel 15.Third circular ring 13 outer wall is tightly attached to the inner wall of annular part 9, and first sealing gasket 19 and second sealing gasket 20 outer wall are tightly attached to the inner wall of annular part 9, and cover first circular ring 11, second circular ring 12 and third circular ring 13. First upper platform 10 inner side wall connects hollow cylinder 22, and first circular ring 11 inner wall is connected with hollow cylinder 22.

[0027] As Figure 4As shown, the first nitrogen inlet 16 and the first nitrogen outlet 17 are respectively arranged on the sidewall of the ring 9, and both of them are communicated with the first nitrogen flow channel 14 and the second nitrogen flow channel 15.

[0028] Specifically, during operation, nitrogen is introduced through the first nitrogen inlet 16, flows through the first nitrogen flow channel 14 and the second nitrogen flow channel 15 to reduce the temperature of the control unit; after the set temperature is fed back by the temperature sensor 21, the power of the bottom electric heating ring 18 is controlled to achieve cold and hot balance, and the temperature of the unit platform is raised and lowered.

[0029] As shown, Figure 3 The warming assembly includes the electric heating ring 18, the first sealing gasket 19 and the second sealing gasket 20; the electric heating ring 18 is arranged between the first sealing gasket 19 and the second sealing gasket 20, and the back of the first sealing gasket 19 is connected to the upper ends of the first ring 11, the second ring 12 and the third ring 13.

[0030] As shown, Figure 4 The detection assembly includes the temperature sensor 21 which is fixedly connected to the upper sidewall of the first upper platform 10. The temperature sensor 21 adopts an existing device, and the model can be E52L-CA1D M62M.

[0031] The first light-transmitting hole 23 is arranged at the center of the first upper platform 10.

[0032] The temperature control unit needs to consider its temperature raising and lowering rate and temperature control precision. The temperature control program is introduced below by taking the temperature lowering rate of 20℃ / min and the temperature raising rate of 5℃ / min as an example;

[0033] When the temperature is lowered, the air pump is started, the first nitrogen inlet 16 is opened, nitrogen is introduced, and the temperature is lowered by one circle of the first upper platform 10 through the first nitrogen flow channel 14 and the second nitrogen flow channel 15, and then the nitrogen is discharged from the first nitrogen outlet 17 and takes away the heat load of the first upper platform 10 through the circulating nitrogen;

[0034] When the temperature is kept, the gas flow in the first nitrogen flow channel 14 and the second nitrogen flow channel 15 is unchanged, and the power of the electric heating ring 18 is adjusted according to the temperature feedback;

[0035] When the temperature is raised, the power of the electric heating ring 18 is adjusted according to the set temperature raising rate and the temperature raising target;

[0036] In the above process, the temperature sensor 21 always monitors the temperature lowering slope of the first upper platform 10 of the unit, adjusts the power of the electric heating ring 18 in real time, and achieves a smooth and uniform temperature raising and lowering curve and a set slope value; when the temperature sensor 21 monitors that the temperature of the first upper platform 10 is too low, the power of the electric heating ring 18 is increased, at this time the temperature rises, and when the temperature is too high, the power of the electric heating ring 18 is reduced to reduce the cold quantity of the first upper platform 10, so as to match the set temperature raising and lowering curve and slope requirement.

[0037] The first nitrogen flow channel 14 and the second nitrogen flow channel 15 directly contact the first upper platform 10, and after being sealed by gasket welding, the electric heating ring 18 is fixed on the first circular ring 11, the second circular ring 12 and the third circular ring 13 by the gasket, so as to heat and warm the first nitrogen flow channel 14 and the second nitrogen flow channel 15; in addition, the temperature sensor 21 is arranged in a changed position, so as to form a temperature feedback adjustment mechanism; the temperature uniformity of the system can be improved, the heat exchange efficiency can be improved, and the temperature measurement precision control effect can be improved; so that the temperature is uniform, the response is fast, and the temperature control is accurate.

[0038] The first nitrogen inlet 16, the first nitrogen outlet 17, the first nitrogen flow channel 14, the second nitrogen flow channel 15, the electric heating ring 18 and the temperature sensor 21 constitute a heat transfer adjustment loop; the heat transfer adjustment loop is used for flowing low-temperature nitrogen in the first nitrogen flow channel 14 and the second nitrogen flow channel 15, taking away the heat of the first upper platform 10, and providing heat for the platform by electric heating.

[0039] When cooling, low-temperature nitrogen is introduced to transfer the cold energy in the first nitrogen flow channel 14 and the second nitrogen flow channel 15 to the first upper platform 10; when warming, the heat of the electric heating ring 18 is transferred to the surface of the first upper platform 10; the temperature of the first upper platform 10 is measured by the temperature sensor 21 extending into the center of the platform, so as to feedback control the nitrogen flow and the electric heating power in the control unit, and realize the temperature rising and falling control of the unit platform. By optimizing the structure and layout of the nitrogen flow channel, the electric heating and the temperature measuring port, the temperature uniformity is improved, the heat exchange efficiency is enhanced, the temperature measurement precision is improved, and the temperature fluctuation is reduced.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or part or all of the technical features can be replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An efficient temperature control structure, characterized in that: It comprises a ring member (9), a flow channel component, a heating component and a detection component; One side of the annular member (9) is connected to the first upper platform (10), and the detection component is connected to the first upper platform (10); the flow channel component is arranged on the inner side of the annular member (9) and connected to the lower side wall of the first upper platform (10); and the heating component is arranged on the side of the flow channel component away from the first upper platform (10).

2. The high-efficiency temperature control structure according to claim 1, characterized in that: The flow channel assembly comprises a first circular ring (11), a second circular ring (12) and a third circular ring (13); the first circular ring (11), the second circular ring (12) and the third circular ring (13) are all connected to the inner wall of the first upper platform (10); a first nitrogen flow channel (14) is formed between the outer wall of the first circular ring (11) and the inner wall of the second circular ring (12); and a second nitrogen flow channel (15) is formed between the outer wall of the second circular ring (12) and the inner wall of the third circular ring (13).

3. The efficient temperature control structure according to claim 2, characterized in that: The heating component includes an electric heating ring (18), a first sealing gasket (19) and a second sealing gasket (20); the electric heating ring (18) is arranged between the first sealing gasket (19) and the second sealing gasket (20), and the back of the first sealing gasket (19) is connected to the upper ends of the first circular ring (11), the second circular ring (12) and the third circular ring (13).

4. The high-efficiency temperature control structure according to claim 1, characterized in that: The detection component comprises a temperature sensor (21), and the temperature sensor (21) is fixedly connected to the upper side wall of the first upper platform (10).

5. The high-efficiency temperature control structure according to claim 2, characterized in that: A first nitrogen inlet (16) and a first nitrogen outlet (17) are respectively provided on the side wall of the annular member (9), and the first nitrogen inlet (16) and the first nitrogen outlet (17) are both connected to the first nitrogen flow channel (14) and the second nitrogen flow channel (15).

6. The high-efficiency temperature control structure according to claim 2, characterized in that: The inner wall of the first upper platform (10) is connected to the hollow cylinder (22), and the inner wall of the first circular ring (11) is connected to the hollow cylinder (22).

7. The efficient temperature control structure according to claim 1, characterized in that: A first light-transmitting hole (23) is provided at the center of the first upper platform (10).

8. The high-efficiency temperature control structure according to claim 3, characterized in that: The outer wall of the third circular ring (13) is in close contact with the inner wall of the annular member (9); the outer walls of the first sealing gasket (19) and the second sealing gasket (20) are in close contact with the inner wall of the annular member (9), and cover the first circular ring (11), the second circular ring (12) and the third circular ring (13).

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