Magnetic stirrer with constant temperature function

Abstract

The utility model discloses a magnetic stirrer with a constant temperature function, and relates to the technical field of analytical instruments, in particular to the magnetic stirrer with the constant temperature function. The device comprises a shell, an ultrathin magnetic coil, a support frame, a power switch, an adjusting knob, a control circuit and a constant temperature device, the even number of the ultrathin magnetic coils is 6-12, and the ultrathin magnetic coils are uniformly distributed at the position, close to the upper wall, of the upper part in the stirrer shell by taking the center of the stirrer shell as a circle center and are fixed through a support frame and bolts; constant temperature devices are arranged at the center and the outer side of the ultrathin magnetic coil; and the control circuit is arranged in the stirrer shell and is respectively connected with the ultrathin magnetic coil, the constant temperature device, and a power switch and an adjusting knob which are arranged on the outer side of the front wall of the stirrer shell. According to the technical scheme, the problems that the temperature of a to-be-stirred sample cannot be accurately controlled due to the fact that the internal temperature of a stirrer in the prior art cannot be controlled, and the stirrer is large in size and heavy in weight due to the fact that a magnetic coil structure is large are solved.

Description

Technical Field

[0001] The utility model discloses a magnetic stirrer with a constant temperature function, relating to the technical field of analytical instruments, and in particular to a magnetic stirrer with a constant temperature function. Background Art

[0002] As an important stirring equipment in the fields of biology, chemistry, etc., traditional magnetic stirrers can generally only achieve temperature control in room temperature environments when controlling temperature, and cannot overcome the problem of inaccurate temperature caused by stirring heat. Therefore, it is impossible to achieve precise temperature control and stir low-temperature objects.

[0003] The magnetic coil structure of the existing stirrer is large and occupies a large space, resulting in the overall structure of the stirrer being large and heavy, making it inconvenient to carry.

[0004] In view of the problems existing in the above-mentioned prior art, it is very necessary to research and design a new type of magnetic stirrer with a constant temperature function to overcome the problems existing in the prior art. Summary of the Invention

[0005] The above-mentioned prior art proposes a magnetic stirrer with a constant temperature function, which cannot control the internal temperature of the stirrer, resulting in an inability to accurately control the temperature of the sample being stirred. At the same time, due to the large structure of the magnetic coil, the stirrer is bulky and heavy. Therefore, a magnetic stirrer with a constant temperature function is provided. The present utility model mainly replaces the original magnetic coil with an ultra-thin magnetic coil, reducing the internal space occupied by the stirrer housing. A constant temperature device is installed in the saved space, thereby achieving the purpose of accurately controlling the temperature of the sample being stirred and reducing the size and weight of the stirrer.

[0006] The technical means adopted by this utility model are as follows:

[0007] A magnetic stirrer with a constant temperature function comprises: a shell, an ultra-thin magnetic coil, a support frame, a power switch, an adjustment button, a control circuit and a constant temperature device;

[0008] Furthermore, the ultra-thin magnetic coil generates a rotating magnetic field based on the control circuit, which enables the magnetic stirring bar to stir;

[0009] Furthermore, the ultra-thin magnetic coils are an even number of 6-12, and are evenly distributed in the upper part of the stirrer housing near the upper wall with the center of the stirrer housing as the center of the circle, and are fixed by a support frame and bolts;

[0010] Furthermore, constant temperature devices are provided at the center and outside of the ultra-thin magnetic coil;

[0011] Furthermore, the control circuit is used to set a preset speed and a preset temperature of the magnetic stirrer, and to control the speed of the magnetic stirrer based on the preset speed, and to control the constant temperature device based on the preset temperature of the magnetic stirrer. It is installed inside the stirrer housing and is respectively connected to the ultra-thin magnetic coil, the constant temperature device, and the power switch and adjustment button installed on the outside of the front wall of the stirrer housing.

[0012] Furthermore, the constant temperature device is used to control the temperature of the magnetic stirrer so that the sample to be stirred is kept at a constant temperature; the constant temperature device includes: a cooling tube and a heating plate;

[0013] Furthermore, the cooling pipe is fixed to the stirrer housing through a cooling pipe support plate and is located outside the ultra-thin magnetic coil;

[0014] Furthermore, the heating plate is fixedly mounted on the inner side of the upper wall of the stirrer shell.

[0015] Furthermore, the cooling pipe is a coil structure, and the inlet and outlet water pipes at both ends are respectively connected to the water supply pipe and return pipe of the external cooling water circulation device; if the temperature of the magnetic stirrer is higher than the preset temperature of the magnetic stirrer, the control circuit controls the constant temperature device to cool the magnetic stirrer.

[0016] Furthermore, a temperature sensor is provided on the inner side of the upper wall of the stirrer housing, and the temperature sensor is connected to the control circuit for real-time monitoring of the temperature of the magnetic stirrer and real-time control of the constant temperature device through the control circuit.

[0017] Furthermore, a single-chip microcomputer is provided inside the control circuit, and the single-chip microcomputer has a built-in programming module to set the internal temperature range of the magnetic stirrer and adjust it through a constant temperature device. That is, if the temperature of the magnetic stirrer is lower than the preset temperature of the magnetic stirrer, the control circuit controls the constant temperature device to heat the magnetic stirrer.

[0018] Furthermore, the temperature range of the magnetic stirrer with a constant temperature function is set to 4°C-50°C.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. The magnetic stirrer with constant temperature function provided by the utility model realizes the control of the speed and constant temperature device through the control circuit, realizes the heating or cooling of the temperature, and ensures the precise control of the temperature of the sample to be stirred;

[0021] 2. The magnetic stirrer with constant temperature function provided by the utility model uses an ultra-thin magnetic coil to control the rotation speed, which can achieve an ultra-thin and lightweight effect, and has the advantages of long life, corrosion resistance, no noise, no vibration, and easy operation.

[0022] In summary, the technical solution of the present invention solves the problems in the prior art that the internal temperature of the agitator cannot be controlled, resulting in the inability to accurately control the temperature of the sample to be stirred. At the same time, due to the large structure of the magnetic coil, the agitator is large in size and heavy in weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a top view of the utility model;

[0026] Figure 3 This is a control system diagram of the utility model.

[0027] In the figure: 1, agitator housing 2, cooling tube support plate 3, cooling tube 4, ultra-thin magnetic coil 5, support frame 6, heating plate 7, temperature sensor 8, power switch 9, adjustment button 10, control circuit. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technology, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0032] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0035] like Figure 1-2 As shown, the utility model provides a magnetic stirrer with a constant temperature function, including: a shell 1, an ultra-thin magnetic coil 4, a support frame 5, a power switch 8, an adjustment button 9, a control circuit 10 and a constant temperature device; there are 8 ultra-thin magnetic coils 4, which are evenly distributed in the upper part of the stirrer shell 1 near the upper wall with the center of the stirrer shell 1 as the center of the circle, and are fixed by the support frame 5 and bolts; a constant temperature device is provided in the center and outside of the ultra-thin magnetic coil 4; the control circuit 10 is installed inside the stirrer shell 1, and is respectively connected to the ultra-thin magnetic coil 4, the constant temperature device, and the power switch 8 and the adjustment button 9 installed on the outside of the front wall of the stirrer shell 1.

[0036] The constant temperature device includes: a cooling tube 3 and a heating plate 6; the cooling tube 3 is fixed to the stirrer housing 1 through a cooling tube support plate 2 and is located outside the ultra-thin magnetic coil 4; the heating plate 6 is fixed to the inner side of the upper wall of the stirrer housing 1.

[0037] The cooling pipe 3 is a coil structure, and the inlet and outlet water pipes at both ends are respectively connected to the water supply pipe and the return pipe of the external cooling water circulation device.

[0038] A temperature sensor 7 is provided on the inner side of the upper wall of the stirrer housing 1 , and the temperature sensor 7 is connected to the control circuit 10 .

[0039] The control circuit 10 is internally provided with a single chip microcomputer, which has a built-in programming module to set the internal temperature range of the magnetic stirrer and adjust it through a constant temperature device.

[0040] The temperature range of the magnetic stirrer with a constant temperature function is set to 4°C-50°C.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetic stirrer with a constant temperature function, characterized in that: The magnetic stirrer with a constant temperature function comprises: a housing (1), an ultra-thin magnetic coil (4), a support frame (5), a power switch (8), an adjustment button (9), a control circuit (10) and a constant temperature device; The ultra-thin magnetic coils (4) are an even number of 6 to 12, and are evenly distributed in the upper part of the stirrer housing (1) near the upper wall with the center of the stirrer housing (1) as the center of the circle, and are fixed by a support frame (5) and bolts; The center and outer side of the ultra-thin magnetic coil (4) are provided with constant temperature devices; The control circuit (10) is installed inside the stirrer housing (1) and is respectively connected to the ultra-thin magnetic coil (4), the constant temperature device, and the power switch (8) and the adjustment button (9) installed on the outer side of the front wall of the stirrer housing (1).

2. The magnetic stirrer with constant temperature function according to claim 1, characterized in that: The constant temperature device comprises: a cooling tube (3) and a heating plate (6); The cooling pipe (3) is fixed to the stirrer housing (1) via a cooling pipe support plate (2) and is located outside the ultra-thin magnetic coil (4); The heating plate (6) is fixedly mounted on the inner side of the upper wall of the stirrer housing (1).

3. The magnetic stirrer with constant temperature function according to claim 2, characterized in that: The cooling pipe (3) is a coil structure, and the inlet and outlet water pipes at both ends are respectively connected to the water supply pipe and the return pipe of the external cooling water circulation device.

4. The magnetic stirrer with constant temperature function according to claim 1, characterized in that: A temperature sensor (7) is provided on the inner side of the upper wall of the stirrer housing (1), and the temperature sensor (7) is connected to the control circuit (10).

5. The magnetic stirrer with constant temperature function according to claim 1, characterized in that: The control circuit (10) is internally provided with a single-chip microcomputer, which has a built-in programming module for setting the internal temperature range of the magnetic stirrer and adjusting it through a constant temperature device.

6. The magnetic stirrer with constant temperature function according to claim 1, characterized in that: The temperature range of the magnetic stirrer with a constant temperature function is set to 4°C-50°C.

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