A mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device

Abstract

The present invention discloses a mechanism for solving the problem of condensed water generated when a temperature control device is refrigerated, comprising a working chamber and a built-in processing mechanism built into the working chamber, the built-in processing mechanism consisting of a stirring fan mechanism, a drainage mechanism, a column fixing mechanism, a preheating mechanism, a chromatographic column automatic switching valve mechanism and a heat preservation cover fixing mechanism, the working chamber is integrally formed from an aluminum block into a shell with a mounting port formed inside, heat preservation cotton is attached to the four sides of the working chamber, the stirring fan mechanism is installed on the left side of the working chamber, the drainage mechanism is installed at the lower left corner of the working chamber, the preheating mechanism is installed below the drainage mechanism, the column fixing mechanism is installed in the middle of the working chamber and a chromatographic column body is installed inside. The present invention designs a mechanism for solving the problem of condensed water generated when a temperature control device is refrigerated, the whole mechanism adopts two methods to remove condensed water, the two methods cooperate with each other, and effectively solve the problem of condensed water generated during refrigeration.

Description

Technical Field

[0001] The invention relates to the technical field of temperature control devices for chromatographic instruments, in particular to a mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device. Background Art

[0002] Chromatograph is a device for chromatographic separation and analysis. It includes injection system, detection system, recording and data processing system, temperature control system and mobile phase control system. Modern chromatographs have the characteristics of stability, sensitivity, versatility and high degree of automation. There are gas chromatographs, liquid chromatographs and gel chromatographs. These chromatographs are widely used in chemical products and the analysis of certain contents of polymer materials. Gel chromatography can also determine the molecular weight and distribution of polymer materials. Most of the existing temperature control devices used in chromatographic instruments have a temperature control range greater than room temperature. Although this will not produce condensed water, there are great limitations in the actual application process. Many samples need to be tested in a low temperature environment to have the best effect. Some high-end chromatographic temperature control devices will have a refrigeration function, and the temperature control range is generally 10 degrees Celsius at room temperature. However, these temperature control devices will find serious corrosion in the working chamber after long-term work. Large manufacturers will use some non-corrosive materials, such as stainless steel, as decoration. Although this method will protect the appearance of the instrument to some extent, it cannot actually solve the root cause of the problem.

[0003] However, the existing temperature control device for chromatographic instruments has the following problems during use: (1) When the temperature control device is refrigerated, the water vapor in the air in the cavity condenses to produce condensed water. The condensed water produced during long-term operation will corrode the cavity and affect the appearance of the instrument. Generally, aluminum is selected as the raw material of the working cavity during application. Aluminum has good thermal conductivity and is cheap, but aluminum is easily oxidized and corroded in a long-term humid environment, which has a great impact on the appearance of the instrument; (2) As the condensed water continues to accumulate, water flow will be generated. Without a good diversion mechanism, the liquid will flow into the instrument and cause harm. Therefore, it is necessary to design a corresponding technical solution to solve the existing technical problems. Summary of the invention

[0004] In order to solve the problem of corrosion of the working cavity caused by condensed water in the existing temperature control device, the present invention provides a mechanism for solving the problem of condensed water generated when the temperature control device is refrigerated. The entire working cavity is reasonably designed and two methods are used to cooperate with each other to solve the condensed water generated during refrigeration to the greatest extent. Even when working under long-term extreme refrigeration conditions, the condensed water can be effectively discharged in time, solving the problem of corrosion of the working cavity and protecting the working cavity to the greatest extent.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device, comprising a working chamber and a built-in processing mechanism built into the working chamber, wherein the built-in processing mechanism is composed of a stirring fan mechanism, a drainage mechanism, a column fixing mechanism, a preheating mechanism, a chromatographic column automatic switching valve mechanism and a thermal insulation cover fixing mechanism, the working chamber is integrally formed from an aluminum block into a shell having an installation port formed therein, thermal insulation cotton is attached to all sides of the working chamber, the stirring fan mechanism is installed on the left side of the working chamber, the drainage mechanism is installed at the lower left corner of the working chamber, the preheating mechanism is installed below the drainage mechanism, the column fixing mechanism is installed in the middle of the working chamber and a chromatographic column body is installed therein, the chromatographic column automatic switching valve mechanism is installed on the right side of the working chamber, and the thermal insulation cover is fixedly installed in front of the working chamber.

[0006] As a preferred embodiment of the present invention, the stirring fan mechanism includes a fan body and a stainless steel fan cover installed on the outside of the fan body, the inner cavity of the working body is provided with a slot, the fan body is embedded in the slot and air inlets and outlets are provided at the upper and lower parts, and a gap is formed between the back side of the fan body and the slot.

[0007] As a preferred embodiment of the present invention, the stainless steel fan cover is made of a stainless steel sheet and has a plurality of ventilation slots evenly formed on its surface.

[0008] As a preferred embodiment of the present invention, the drainage mechanism is composed of an adapter block and an outlet pagoda head. The lower surface of the working chamber is designed to be inclined at an angle and is inclined from right to left. A water storage tank is formed at the lower left corner of the working chamber and the adapter block. The outer side of the adapter block is wrapped with a sealing gasket, and the outlet pagoda head is installed under the adapter block.

[0009] As a preferred embodiment of the present invention, the column fixing mechanism comprises a column fixing block and a hand screw, and the chromatographic column body is fixed between the working chamber and the column fixing block by the hand screw.

[0010] As a preferred embodiment of the present invention, the preheating mechanism is composed of a preheating cover plate, which covers the bottom of the fan cover and has a plate-like structure.

[0011] As a preferred embodiment of the present invention, the chromatographic column automatic switching valve mechanism comprises a chromatographic column switching valve and a switching valve cover installed on the outside of the chromatographic column switching valve, and the chromatographic column body is connected to the chromatographic column switching valve.

[0012] As a preferred embodiment of the present invention, the insulation cover fixing mechanism includes an insulation cover body and a circular magnet used in conjunction with the insulation cover body. The circular magnet components are provided in four groups and are evenly installed on the inner wall of the working cavity, and the insulation cover body is adsorbed on the circular magnet.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention designs a mechanism for solving the condensation water generated when the temperature control device is refrigerated. The whole mechanism adopts two methods to remove the condensation water. The two methods cooperate with each other to effectively solve the condensation water problem generated during refrigeration. First, a fan of suitable power is embedded in the working cavity to make the air inside the entire cavity flow. This method can effectively inhibit the generation of condensation water in the cavity and solve the condensation water problem under the condition of a large mechanism; secondly, when working for a long time under extreme refrigeration conditions, when the air flow in the cavity is not enough to eliminate all the condensation water, a drainage mechanism is designed inside the cavity, and the generated condensation water will flow into the water storage tank along the designated flow channel and then be discharged to the waste liquid pipeline. When the refrigeration is stopped, the circulating flow of air in the cavity can dry the liquid remaining on the inner wall of the cavity, keep the cavity dry, and make the inner wall of the cavity not easy to oxidize and corrode. The two methods cooperate with each other to effectively solve the condensation water problem generated during refrigeration.

[0015] 2. The condensate treatment mechanism designed in the present invention has a simple structure and a small size, and is mostly installed in an embedded manner, which occupies a small space in the working cavity and does not affect the normal operation of the working cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall development of the present invention;

[0017] Figure 2 This is a schematic diagram of the stirring fan component of the present invention;

[0018] Figure 3 for Figure 1 Schematic diagram of the cross section at MM;

[0019] Figure 4 for Figure 1 Schematic diagram of the cross section at NN;

[0020] Figure 5 This is a schematic diagram of the gas circulation of the present invention;

[0021] In the figure: 1. working chamber; 2. chromatographic column body; 3. round magnetic steel; 4. thermal insulation cotton; 5. chromatographic column switching valve; 6. switching valve cover; 7. thermal insulation cover; 8. outlet pagoda head; 9. adapter block; 10. preheating cover plate; 11. fan cover; 12. fan body; 13. column fixing block; 14. hand screws; 15. sealing gasket; 16. notch; 17. air inlet and outlet; 18. ventilation slot. DETAILED DESCRIPTION

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

[0023] See also Figure 1-5 The present invention provides a mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device: Figure 1 As shown, the structure of the whole device is simple and compact. The whole working chamber 1 is integrally formed by an aluminum block, and is tightly covered by thermal insulation cotton 4 on all sides to ensure that the chamber does not exchange heat with the outside world and play a role in heat preservation. On the left side of the chamber is a fan component, which plays a role in stirring the air in the chamber and keeps the gas in the chamber in a flowing state, so that condensation water is not easily generated in the chamber. The lower left corner is a water storage tank and a drain port of the working chamber, and the lower part is a preheating treatment mechanism. The middle part is a column fixing mechanism, which can accommodate up to four chromatographic columns 2. The length and position of the column fixing mechanism can meet the commonly used chromatographic columns of 250mm and 150mm in length through reasonable design. The right side is a column switching valve 5, which can realize automatic switching between chromatographic columns. The thermal insulation cover 7 is fixed to the front of the chamber with four circular magnetic steels 3. The size and number of the magnetic steels 3 are finally determined through experiments, so that the thermal insulation cover 7 has appropriate force for disassembly and installation, which is convenient for operation.

[0024] like Figure 2As shown, the stirring fan part in the working chamber 1 is composed of a low-power fan 12 installed inside the working chamber 1. The working chamber 1 is specially dug with a space for the fan body 12, so that the fan body 12 is embedded in the working chamber 1, and a certain space is maintained between the rear and the fan body 12, so that the fan body 12 has space for air intake, so that the wind in and out of the fan body 12 can be balanced. The fan body 12 has a groove on the top and bottom, so that the air in the cavity can smoothly enter the space behind the fan body 12, so that the fan body 12 forms a gas circulation loop inside the working chamber 1, and the fan cover 11 is made of stainless steel sheet. The stainless steel material has good anti-corrosion performance. At the same time, because the material is very thin, it is installed with countersunk screws. The entire fan cover 11 does not occupy the space inside the cavity. At the same time, a plurality of ventilation slots 18 are opened on the front of the fan cover 11, and the air outlet of the fan body 12 can smoothly enter the cavity, so that the air in the cavity circulates, thereby suppressing the condensation water generated in the cavity.

[0025] like Figure 3 As shown, the middle protrusion mechanism of the working chamber 1 is a column fixing mechanism, which has four semicircular slots for installing the chromatographic column body 2, and the radii of these semicircular slots are different. The design of this radius is based on the diameters of the two existing chromatographic column bodies 2, which better adapts to different types of chromatographic column bodies 2, so that the chromatographic column body 2 and the working chamber 1 can have a better fit, and the corresponding column fixing block also has a corresponding semicircular slot, so that the working chamber 1 and the chromatographic column body 2 are heat exchanged in a direct contact manner, which greatly improves the efficiency of heat transfer. At the same time, the upper, middle and lower positions of the column fixing mechanism are all grooved, and this groove is to enable the gas blown out of the left fan body to better enter the right mechanism. In order to make the gases on the left and right sides circulate better, the lower bottom surface inside the working chamber 1 is designed to have a certain angle. This design is to allow the condensed water generated in the chamber to flow along the inner side of the chamber and flow into the water storage tank according to the designed flow channel, and will not overflow through the insulation cover 7. There is also a pipeline preheating mechanism under the working chamber 1. This mechanism is designed as a groove that can accommodate multiple standard stainless steel pipes. Its height is the same as the diameter of the standard stainless steel pipe of the chromatographic instrument. The pipeline is fixed by the preheating cover 10 to make it directly contact with the heating chamber, so that the sample in the stainless steel pipe is preheated before entering the chromatographic column, so that the sample in the chromatographic column has a better separation effect, thereby improving the stability and accuracy of the experiment.

[0026] like Figure 4As shown, this figure is the water tank part of the whole device, which is composed of a working chamber 1, an adapter block 9, an outlet pagoda head 8, and a sealing gasket 15. The condensed water generated in the working chamber 1 enters the water tank through the designed flow channel, and is then discharged to the waste liquid system through the outlet pagoda head 8. There is a sealing gasket 15 between the working chamber 1 and the adapter block 9 to ensure that the water in the water tank will not flow out from the installation gap of the adapter block 9. The adapter block 9 is designed to have a height higher than the lower surface inside the working chamber 1 to ensure that the liquid in the chamber will not flow out from the top of the adapter block 9. The outlet pagoda head 8 and the adapter block 9 are threadedly connected. After installation, the lowest point of the inner hole of the outlet pagoda head 8 is slightly lower than the lower bottom surface of the water tank. At the same time, the ground under the water tank is designed with a certain inclination angle, which is inclined toward the water outlet. This design can drain the liquid in the water tank without any residue.

[0027] like Figure 5 As shown, under the action of the fan body 12, the gas in the entire cavity is irregularly exchanged through the slots of the column fixing mechanism and the gap on the upper side of the column fixing block 13. The air in the entire cavity is always in a flowing state, and it is not easy to produce condensed water in the cavity under refrigeration conditions. At the same time, because the air circulates inside the cavity, the temperature of the cavity will not be brought outside the cavity to exchange heat with the outside world, thereby ensuring the stability of the temperature in the cavity.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for the technical features of the mechanisms therein. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device, characterized in that: The invention comprises a working chamber (1) and a built-in processing mechanism built into the working chamber (1), wherein the built-in processing mechanism comprises a stirring fan mechanism, a drainage mechanism, a column fixing mechanism, a preheating mechanism, a chromatographic column automatic switching valve mechanism and a heat preservation cover (7) fixing mechanism, wherein the working chamber (1) is integrally formed from an aluminum block into a shell having a mounting opening formed therein, heat preservation cotton (4) is attached to all four sides of the working chamber (1), the stirring fan mechanism is installed on the left side of the working chamber (1), the drainage mechanism is installed on the lower left corner of the working chamber (1), the preheating mechanism is installed below the drainage mechanism, the column fixing mechanism is installed in the middle of the working chamber (1) and a chromatographic column body (2) is installed therein, the chromatographic column automatic switching valve mechanism is installed on the right side of the working chamber (1), and the heat preservation cover (7) is fixedly installed in front of the working chamber (1); The stirring fan mechanism comprises a fan body (12) and a stainless steel fan cover (11) mounted on the outside of the fan body (12); a notch (16) is provided on the inner wall of the working chamber (1); the fan body (12) is embedded in the notch (16) and is provided with air inlets and outlets (17) at the top and bottom; and a gap is formed between the back side of the fan body (12) and the notch (16); The drainage mechanism is composed of an adapter block (9) and an outlet pagoda head (8); the lower surface of the working chamber (1) is designed to be inclined from right to left; a water storage tank is formed at the lower left corner of the working chamber (1) and the adapter block (9); a sealing gasket (15) is wrapped around the outer side of the adapter block (9); and the outlet pagoda head (8) is installed below the adapter block (9).

2. The mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device according to claim 1, characterized in that: The stainless steel fan cover (11) is made of a stainless steel sheet and has a plurality of groups of ventilation slots (18) evenly arranged on its surface.

3. The mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device according to claim 1, characterized in that: The column fixing mechanism comprises: a column fixing block (13) and a hand screw (14); the chromatographic column body (2) is fixed between the working chamber (1) and the column fixing block (13) by means of the hand screw (14).

4. The mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device according to claim 2, characterized in that: The preheating mechanism is composed of a preheating cover plate (10), which covers the bottom of the fan cover (11) and has a plate-shaped structure.

5. The mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device according to claim 1, characterized in that: The chromatographic column automatic switching valve mechanism comprises a chromatographic column switching valve (5) and a switching valve cover (6) installed on the outside of the chromatographic column switching valve (5), and the chromatographic column body (2) is connected to the chromatographic column switching valve (5).

6. The mechanism for solving the problem of condensed water generated during refrigeration of a temperature control device according to claim 3, characterized in that: The thermal insulation cover (7) fixing mechanism comprises a thermal insulation cover (7) body and a circular magnetic steel (3) used in conjunction with the thermal insulation cover (7) body, wherein the circular magnetic steel (3) is divided into four groups and evenly mounted on the inner wall of the working chamber (1), and the thermal insulation cover (7) body is adsorbed on the circular magnetic steel (3).

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