A rapid temperature rising and falling column oven of liquid chromatograph

Abstract

The utility model relates to technical fields, concretely relates to a kind of quick temperature rising and falling column oven of liquid chromatograph, heating element is arranged in heat conduction layer, and heat conduction layer and mounting seat are all made of good heat conduction metal, and direct conduction is adopted to the analysis column contact surface with heat, avoid the temperature gradient caused by traditional air convection.Greatly improve the efficiency of temperature conduction, improve temperature rising rate.Through the sliding seal design cooperation sealing sliding slot of left slide plate and right slide plate, and the sliding of left slide plate and right slide plate, rely on the intercommunication design of hydraulic groove and sealing sliding slot, when closing cover plate, automatic pressure block is pressed down, so that left slide plate and right slide plate seal mounting groove, and when opening cover plate, reset spring drives pressure block reset, and then left slide plate and right slide plate are opened, ensure the sealing property and integrity of entire mounting groove, and then guarantee the stability of temperature regulation.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid chromatograph accessories, and in particular to a rapid heating and cooling column oven for liquid chromatographs. Background Technology

[0002] In the field of high-performance liquid chromatography (HPLC) analysis, the column oven is a core component, and its temperature control accuracy and stability directly affect the separation effect and analytical reproducibility. Traditional column ovens generally adopt an overall heating / cooling mode, achieving temperature regulation through air convection or metal block conduction. Within a space surrounded by thermal insulation material, a thermally conductive heating block maintains the analytical column. By heating the heating block, heat is transferred from the heating block to the analytical column, thereby regulating the column temperature.

[0003] At that time, the recesses in column ovens used to hold analytical columns were generally open, and most column ovens adopted a one-piece open-top design. Since the open top and the recesses in the column oven were generally difficult to form a complete unit, it was difficult to achieve a high degree of sealing. Especially when the analytical column was large, the lack of integrated heat conduction made it difficult to guarantee temperature uniformity.

[0004] Furthermore, analytical column installation often relies on manual fixing, lacking rapid positioning and pressure adaptive mechanisms. Traditional spring clips or screw fastening methods are prone to stress shifts due to thermal expansion and contraction, which may lead to microleakage or fixation failure in the column over long-term use, especially affecting the reliability of continuous testing in high-throughput laboratories. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a rapid heating and cooling column oven for liquid chromatographs to solve the technical problems in the prior art.

[0006] To achieve the above objectives, this utility model provides a rapid temperature-increasing column oven for a liquid chromatograph, comprising a column oven body 101 and two cover plates 105 hinged to the column oven body 101. The rapid temperature-increasing column oven further includes: A mounting groove 102 is provided at the center of the column oven body 101. The top of the mounting groove 102 is open and a mounting seat 103 is provided inside for mounting and fixing the analytical column 01. A heat-conducting layer 118 is provided outside the mounting groove 102, and the heat-conducting layer 118 is fixedly connected to the body 101 of the temperature chamber. Left slide plate 109 and right slide plate 110 are located on top of mounting groove 102 to cover the top opening of mounting groove 102, and left slide plate 109 and right slide plate 110 are slidably connected inside column temperature chamber body 101.

[0007] Furthermore, the cover plate 105 is provided with a buckle 107, and the corresponding position on the column temperature chamber body 101 is provided with a slot 108.

[0008] Furthermore, the cover plate 105 is also provided with a heat insulation pad 106, the shape of which is the same as that of the mounting groove 102.

[0009] Furthermore, the main body 101 of the column temperature chamber is provided with a sealing groove 111. There are two sealing grooves 111, which are located on the left and right sides of the mounting groove 102 respectively. The left end of the left sliding plate 109 and the right end of the right sliding plate 110 are located in the left and right sealing grooves 111 respectively and are slidably connected with them.

[0010] Furthermore, the main body 101 of the column temperature chamber is also provided with a pressure block 113, and the main body 101 of the column temperature chamber is also provided with a hydraulic groove 114. The lower end of the pressure block 113 is located in the hydraulic groove 114 and is slidably connected to it. The inner cavities of the hydraulic groove 114 and the sealing groove 111 are interconnected and filled with hydraulic medium.

[0011] Furthermore, the main body 101 of the column temperature chamber is also provided with a main channel 116, which is connected to the inner cavity of the hydraulic tank 114. The end of the main channel 116 is connected to two liquid channels 112 through a connection port 117, and the two liquid channels 112 are respectively connected to the inner cavities of two sealing grooves 111.

[0012] Furthermore, a return spring 115 is also provided in the hydraulic groove 114, and the upper and lower ends of the return spring 115 are respectively fixedly connected to the lower end of the pressure block 113 and the bottom of the hydraulic groove 114.

[0013] Furthermore, the heat-conducting layer 118 is made of metal, such as aluminum alloy, and a heating element 119 is also provided inside the heat-conducting layer 118.

[0014] Furthermore, the left slide plate 109 and the right slide plate 110 are made of metal, the mounting base 103 is also made of metal, and the upper end of the mounting base 103 is connected to an arc-shaped metal spring 104.

[0015] The beneficial effects of this invention are as follows: 1. A heating element is set in the heat-conducting layer, and both the heat-conducting layer and the mounting base are made of thermally conductive metal and are designed as an integrated unit, directly transferring heat to the contact surface of the analytical column, avoiding the temperature gradient caused by traditional air convection. This greatly improves the efficiency of temperature conduction and increases the rate of temperature rise and fall.

[0016] 2. The sliding sealing design of the left and right sliding plates, combined with the sealing groove, allows the sliding of the left and right sliding plates to rely on the connection between the hydraulic groove and the sealing groove. After the pressure block is pressed down, the force can be transmitted to the left and right sliding plates to make them slide, thereby sealing the installation groove and ensuring the sealing and integrity of the entire installation groove, thus ensuring the stability of temperature control.

[0017] 3. A return spring is also installed in the hydraulic groove to drive the pressure block and the left and right sliding plates to reset. Therefore, when the cover is closed, the pressure block is automatically pressed down, causing the left and right sliding plates to seal the mounting groove. When the cover is opened, the return spring drives the pressure block to reset, thereby opening the left and right sliding plates to expose the mounting groove, making it easier to handle the analysis column inside.

[0018] 4. The mounting base is equipped with metal springs, which not only make it easy to insert the analytical column into the mounting base, but also provide a fixing function, making it simple and convenient to use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure and principle of the device of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the device after the cover plate is closed.

[0022] Figure 3 This is a schematic diagram of the main body of the column temperature chamber in the device of this utility model.

[0023] Figure 4 This is a schematic diagram of the mounting base portion in the device of this utility model.

[0024] Figure 5 This is a cross-sectional view of the device of this utility model.

[0025] Figure 6 This is a longitudinal sectional view of the device of this utility model.

[0026] The diagram is marked as follows: 01. Analytical column; 101. Column oven body; 102. Mounting slot; 103. Mounting base; 104. Metal spring; 105. Cover plate; 106. Thermal insulation pad; 107. Buckle; 108. Slot; 109. Left sliding plate; 110. Right sliding plate; 111. Sealing groove; 112. Liquid flow channel; 113. Pressure block; 114. Hydraulic groove; 115. Return spring; 116. Main flow channel; 117. Connection port; 118. Thermal conductive layer; 119. Heating element. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] The first aspect of this utility model is as follows: Figure 1 , Figure 3 and Figure 4 As shown, traditional column ovens generally employ an integrated heating / cooling mode, achieving temperature regulation through air convection or metal block conduction. Within a space surrounded by insulating material, a thermally conductive heating block maintains the analytical column's temperature. Heating the heating block transfers heat to the analytical column, thus regulating its temperature. This method results in slow temperature regulation. To improve the speed of temperature regulation, this invention features a mounting groove 102 at the center of the column oven body 101. The top of the mounting groove 102 is open, and a mounting base 103 is provided inside for mounting and fixing the analytical column 01. Additionally, a cover plate 105 is hinged to the column oven body 101.

[0030] A heat-conducting layer 118 is provided on the outside of the mounting slot 102 and is fixedly connected to the main body 101 of the incubator. The heat-conducting layer 118 covers all surfaces of the mounting slot 102 except for the top surface, and is made of metal, such as aluminum alloy. A heating element 119 is also provided inside the heat-conducting layer 118. The mounting base 103 is also made of metal, and an arc-shaped metal spring 104 is connected to the upper end of the mounting base 103.

[0031] Therefore, by setting the heating element 119 in the thermally conductive layer 118, and by using an integrated design where both the thermally conductive layer 118 and the mounting base 103 are made of thermally conductive metal, heat is directly conducted to the contact surface of the analytical column, avoiding the temperature gradient caused by traditional air convection. This greatly improves the efficiency of temperature conduction and increases the rate of temperature rise and fall.

[0032] Additionally, a left sliding plate 109 and a right sliding plate 110 are provided at the top of the mounting slot 102 to cover the top opening of the mounting slot 102, and the left sliding plate 109 and the right sliding plate 110 are slidably connected inside the column temperature chamber body 101. The left sliding plate 109 and the right sliding plate 110 can seal the mounting slot 102, ensuring the sealing and integrity of the entire mounting slot 102, thereby ensuring the stability of temperature control.

[0033] Preferably, the left slide plate 109 and the right slide plate 110 are also made of metal, and the left slide plate 109 and the right slide plate 110 are in direct contact with the heat-conducting layer 118, thus improving the heat conduction efficiency.

[0034] The second aspect of this utility model is as follows: Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the recesses in column ovens used to hold analytical columns are generally open, and most column ovens adopt a one-piece open-top design. Since the open top and the recesses in the column oven are generally difficult to form a cohesive whole, achieving a high degree of sealing is challenging. Especially when the analytical column is large, the lack of integrated heat conduction makes it difficult to guarantee temperature uniformity. Therefore, in this embodiment, a left sliding plate 109 and a right sliding plate 110 are provided at the top of the mounting slot 102 to cover the top opening of the mounting slot 102.

[0035] The column temperature chamber body 101 is provided with two sealing grooves 111, located on the left and right sides of the mounting groove 102 respectively. The left end of the left sliding plate 109 and the right end of the right sliding plate 110 are located in the two sealing grooves 111 and slidably connected thereto. The column temperature chamber body 101 is also provided with a pressure block 113, and a hydraulic groove 114 is also provided inside the column temperature chamber body 101. The lower end of the pressure block 113 is located in the hydraulic groove 114 and slidably connected thereto. The inner cavities of the hydraulic groove 114 and the sealing grooves 111 are interconnected and filled with hydraulic medium. The column temperature chamber body 101 is also provided with a main flow channel 116, which is connected to the inner cavity of the hydraulic groove 114. The end of the main flow channel 116 is connected to two liquid flow channels 112 through a connection port 117. The two liquid flow channels 112 are respectively connected to the inner cavities of the two sealing grooves 111.

[0036] The sliding sealing design of the left slide plate 109 and the right slide plate 110, combined with the sealing groove 111, allows the left slide plate 109 and the right slide plate 110 to slide by means of the hydraulic groove 114 and the sealing groove 111. After the pressure block 113 is pressed down, the force can be transmitted to the left slide plate 109 and the right slide plate 110 to make them slide, thereby sealing the mounting groove 102 and ensuring the sealing and integrity of the entire mounting groove 102, thus ensuring the stability of temperature control.

[0037] Preferably, a return spring 115 is also provided inside the hydraulic groove 114. The upper and lower ends of the return spring 115 are fixedly connected to the lower end of the pressure block 113 and the bottom of the hydraulic groove 114, respectively. Therefore, when the cover plate 105 is closed, the pressure block 113 is automatically pressed down, causing the left slide plate 109 and the right slide plate 110 to seal the mounting groove 102. When the cover plate 105 is opened, the return spring 115 drives the pressure block 113 to return to its original position, thereby opening the left slide plate 109 and the right slide plate 110 to expose the mounting groove 102, which facilitates the processing of the analysis column 01 inside.

[0038] In addition, a buckle 107 is provided on the cover plate 105, and a corresponding slot 108 is provided on the main body 101 of the column temperature chamber. The cover plate 105 is also provided with a heat insulation pad 106, the shape of which is the same as that of the mounting slot 102.

[0039] In summary, this invention incorporates a heating element 119 within the heat-conducting layer 118. Both the heat-conducting layer 118 and the mounting base 103 are made of thermally conductive metal and feature an integrated design, directly transferring heat to the contact surface of the analytical column and avoiding temperature gradients caused by traditional air convection. This significantly improves the efficiency of temperature conduction and increases the rate of temperature rise and fall. The mounting base 103 is equipped with a metal spring 104, which not only facilitates the insertion of the analytical column 01 into the mounting base 103 but also provides a fixing function, making it simple and convenient to use.

[0040] The sliding seal design of the left slide plate 109 and right slide plate 110, combined with the sealing groove 111, allows the left slide plate 109 and right slide plate 110 to slide. The sliding of these two slide plates relies on the connection between the hydraulic groove 114 and the sealing groove 111. When the pressure block 113 is pressed down, force is transmitted to the left slide plate 109 and right slide plate 110, causing them to slide and seal the mounting groove 102. This ensures the sealing and integrity of the entire mounting groove 102, thereby guaranteeing the stability of temperature control. A return spring 115 is also provided in the hydraulic groove 114 to drive the pressure block 113 and the left and right slide plates 109 and 110 to reset. Therefore, when the cover plate 105 is closed, the pressure block 113 is automatically pressed down, causing the left and right slide plates 109 and 110 to seal the mounting groove 102. When the cover plate 105 is opened, the return spring 115 drives the pressure block 113 to reset, thereby opening the left and right slide plates 109 and 110, exposing the mounting groove 102 for easier handling of the analytical column 01.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0042] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rapid temperature rise and fall column oven for a liquid chromatograph, comprising an oven body (101) and two cover plates (105) hinged to the oven body (101), characterized in that, The rapid temperature rise and fall column oven also includes: An installation groove (102) is provided at the center of the column oven body (101). The top of the installation groove (102) is open and a mounting seat (103) is provided inside for installing and fixing the analytical column (01). A heat-conducting layer (118) is provided outside the mounting groove (102), and the heat-conducting layer (118) is fixedly connected inside the temperature chamber body (101); Left slide plate (109) and right slide plate (110) are located on top of the mounting groove (102) to cover the top opening of the mounting groove (102), and the left slide plate (109) and right slide plate (110) are slidably connected in the column temperature chamber body (101).

2. The rapid temperature rise and fall column oven for a liquid chromatograph according to claim 1, characterized in that, The cover plate (105) is provided with a buckle (107), and the corresponding position on the main body of the column temperature chamber (101) is provided with a slot (108).

3. A rapid temperature rise and fall column oven for a liquid chromatograph according to claim 1 or 2, characterized in that, The cover plate (105) is also provided with a heat insulation pad (106), the shape of which is the same as that of the mounting groove (102).

4. The rapid temperature rise and fall column oven for a liquid chromatograph according to claim 1, characterized in that, The main body (101) of the column temperature chamber is provided with a sealing groove (111). There are two sealing grooves (111) and they are located on the left and right sides of the mounting groove (102). The left end of the left sliding plate (109) and the right end of the right sliding plate (110) are located in the left and right sealing grooves (111) and are slidably connected to them.

5. A rapid temperature rise and fall column oven for a liquid chromatograph according to claim 4, characterized in that, The main body (101) of the column temperature chamber is also provided with a pressure block (113), and the main body (101) of the column temperature chamber is also provided with a hydraulic groove (114). The lower end of the pressure block (113) is located in the hydraulic groove (114) and is slidably connected to it. The inner cavities of the hydraulic groove (114) and the sealing groove (111) are interconnected and are filled with hydraulic medium.

6. A rapid temperature rise and fall column oven for a liquid chromatograph according to claim 5, characterized in that, The main body (101) of the column temperature chamber is also provided with a main channel (116), which is connected to the inner cavity of the hydraulic tank (114). The end of the main channel (116) is connected to two liquid channels (112) through a connection port (117), and the two liquid channels (112) are respectively connected to the inner cavities of two sealing grooves (111).

7. A rapid temperature rise and fall column oven for a liquid chromatograph according to claim 5, characterized in that, The hydraulic groove (114) is also provided with a reset spring (115), and the upper and lower ends of the reset spring (115) are respectively fixedly connected to the lower end of the pressure block (113) and the bottom of the hydraulic groove (114).

8. A rapid temperature rise and fall column oven for a liquid chromatograph according to claim 1, characterized in that, The heat-conducting layer (118) is made of metal, such as aluminum alloy, and a heating element (119) is also provided inside the heat-conducting layer (118).

9. A rapid temperature rise and fall column oven for a liquid chromatograph according to claim 1 or 8, characterized in that, The left sliding plate (109) and the right sliding plate (110) are made of metal, and the mounting base (103) is also made of metal. The upper end of the mounting base (103) is also connected to an arc-shaped metal spring (104).

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