PCR instrument hot cover and PCR instrument

Abstract

The utility model discloses a PCR (polymerase chain reaction) instrument thermal cover, which comprises a thermal cover body, the thermal cover body comprises a heating source and a thermal cover plate, the heating source is tightly attached to the thermal cover plate, the thermal cover plate is made of aluminum alloy materials and is provided with two opposite heating surfaces, a plurality of sealed inner cavity channels are arranged in the thermal cover plate, and refrigerants are filled in the inner cavity channels. The heating source is arranged in the middle of the heat cover plate and tightly attached to one of the heating surfaces, the other heating surface, opposite to the heating source, of the heat cover plate is provided with a heat conducting plate for conducting heat, the heat conducting plate is provided with a plurality of round holes arranged in an array mode, and the round holes are opposite to the inner cavity channel in position. The utility model further discloses a PCR (Polymerase Chain Reaction) instrument which comprises the heat cover of the PCR instrument. Compared with the prior art, when a heating source is used for heating, heat is rapidly diffused to the two sides from the middle through a refrigerant, heating of the heat cover is more uniform, and due to the fact that the whole face of the heating source does not need to be arranged on the heat cover plate, energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a detection device, in particular to a PCR instrument heat cover and PCR instrument. BACKGROUND

[0002] At present, PCR (Polymerase Chain Reaction) equipment is an important component, its main role is to control the temperature of the upper part of the reaction tube, prevent the evaporation of the reaction liquid, at the same time keep the temperature of the whole reaction system stable, ensure the accuracy and efficiency of PCR reaction. The heat cover is usually on the top of the PCR instrument, close to the cover of the PCR reaction tube, provide certain heating, avoid the condensation effect of the cover and the reaction liquid, and then affect the experimental results. But the heat cover on the current PCR instrument is heated by the electric heating film, which has the problems of uneven heating and easy damage, and is easy to age, crack and harden under long time high temperature, and because the electric heating film has fast heating speed, but it is resistance heating, which has the problem of high energy consumption. SUMMARY

[0003] The utility model discloses a PCR instrument heat cover and PCR instrument, and the technical problems to be solved are that the heating of the heat cover is more uniform.

[0004] To solve the above problems, the utility model adopts the following technical scheme: a PCR instrument heat cover, including heat cover body, the heat cover body includes heat source, heat cover plate, heat source and heat cover plate close setting, the heat cover plate is made of aluminum alloy material, has two opposite heat surfaces, and a plurality of sealed inner cavities are arranged in the heat cover plate, the inner cavities are filled with refrigerant, the heat source is arranged at the middle position of the heat cover plate and close to one of the heat surfaces, the other heat surface opposite to the heat source of the heat cover plate is provided with a heat conduction heat conduction plate, a plurality of arrayed round holes are arranged on the heat conduction plate, and the round holes are opposite to the inner cavities.

[0005] Further, the heat conduction plate is made of aluminum alloy material.

[0006] Further, the round hole is provided with heat-conducting silica gel.

[0007] Further, the heat source includes at least one group of PTC heating components, each group of PTC heating components includes a PTC heating element, an electrode plate, an insulating paper and an aluminum pipe, the PTC heating elements are arranged in a line, electrode coating layers are arranged on the opposite sides of the PTC heating elements, the electrode plate is provided with two electrode plates, which are arranged on the opposite sides of the PTC heating elements and in contact with the electrode coating layers, the insulating paper is wound outside the electrode plate, and the aluminum pipe is sleeved outside the insulating paper.

[0008] Further, the length direction of the heat source is perpendicular to the length direction of the inner cavity.

[0009] Further, the diameter of the round hole is 7mm and the depth is 10mm.

[0010] The utility model discloses a PCR instrument, including the body still include the PCR instrument heat cover.

[0011] Compared with the prior art, the heat cover plate is made of aluminum alloy material, a sealed inner cavity is arranged in the heat cover plate, the inner cavity is filled with refrigerant, and the heat source is arranged at the middle position of the heat cover plate, so that the heat source can rapidly spread heat from the middle to both sides through the refrigerant when heating, the heating of the heat cover is more uniform, and the energy consumption is reduced because the whole surface of the heat cover plate does not need to be provided with the heat source. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the structure schematic diagram of the utility model.

[0013] Figure 2 is the internal structure schematic diagram of the utility model.

[0014] Figure 3 is the structure schematic diagram of the heat conduction plate of the utility model.

[0015] Figure 4 is the position schematic diagram of the utility model applied to the PCR instrument. DETAILED DESCRIPTION

[0016] The utility model will be further explained in detail in connection with the drawings and examples.

[0017] As Figures 1 to 3As shown, this utility model discloses a PCR instrument heating cover, which is installed on a PCR instrument. The PCR instrument heating cover includes a heating cover body 1, which includes a heat source 2 and a heating cover plate 3. The heat source 2 and the heating cover plate 3 are closely attached to each other. The heat source 2 is used to heat the heating cover plate 3 to maintain the temperature of the heating cover plate 3 at the required temperature and prevent water vapor from accumulating on the PCR tubes in the PCR instrument. The heating cover plate 3 is made of aluminum alloy and has a plate-like structure with two opposing heating surfaces. The heating surfaces are flat and have several sealed inner cavities 4 inside. The inner cavities 4 are filled with a refrigerant. The heat source 2 is placed on the heating cover. The cover plate 3 is located in the middle and is in close contact with one of the heating surfaces. A heat-conducting plate 5 is provided on the other heating surface of the cover plate 3 opposite to the heat source 2. The heat-conducting plate 5 has several arrayed circular holes 6. The circular holes 6 are opposite to the inner cavity 4 so that when the cover plate 3 is heated by the heat source 2, the heat is quickly diffused from the middle to both sides by the refrigerant, covering the entire cover plate 3, making the heating of the cover plate 3 more uniform. This also eliminates the need to set the heat source 2 on the entire cover plate 3, reducing energy consumption. The circular holes 6 allow the PCR tube to be inserted into the circular holes 6 and better seal the opening of the PCR tube.

[0018] Of course, the heat cover plate 3 and the heat conduction plate 5 can be detachable to meet the needs of PCR plate use. The detachable structure can be magnetic or plug-in, which will not be described in detail here. When a fixed structure is used, the heat cover plate 3 and the heat conduction plate 5 are fixed by adhesive or laser welding.

[0019] In this invention, the heat-conducting plate 5 is made of aluminum alloy.

[0020] like Figure 2 As shown, thermally conductive silicone 7 is provided inside the circular hole 6 to improve the sealing effect and also to meet the needs of PCR tubes of different heights.

[0021] like Figure 2 As shown, in one embodiment of this utility model, the heat source 2 includes at least one set of PTC heating components. Each set of PTC heating components includes a PTC heating element 21, an electrode plate 22, an insulating paper 23, and an aluminum tube 24. The PTC heating elements 21 are arranged in a row, and electrode coatings are provided on the opposite sides of the PTC heating elements 21. Two electrode plates 22 are provided, respectively disposed on the opposite sides of the PTC heating elements 21 and in contact with the electrode coatings. The insulating paper 23 is wrapped around the electrode plate 22, and the aluminum tube 24 is sleeved on the insulating paper 23. One of the two electrode plates is the positive electrode, and the other is the negative electrode. The aluminum tube 24 is fixed to the heat cover plate 3 by welding.

[0022] Preferably, the heat source 2 uses a set of PTC heating components, which achieves energy saving.

[0023] In the utility model, the length direction of the heat source 2 is perpendicular to the length direction of the inner cavity 4, so that the heating of the heat source 2 can cover each inner cavity, and the heating is more uniform.

[0024] In the utility model, the diameter of the round hole 6 is 7mm, and the depth is 10mm, so that the PCR tube of various heights can be used, since the silica gel is arranged in the round hole 6, the problem that the PCR tube of different heights cannot be matched is not existed, so that the sealing under various heights can be realized.

[0025] As shown in Figure 4 The utility model discloses a PCR instrument, including body 100, the PCR instrument in the utility model is prior art, and here is not detailedly explained, and the improvement is that the above-mentioned PCR instrument heat cover is used in the prior art PCR instrument, and the heat cover plate 3 is fixed on the cover 101 of the PCR instrument, the heat conduction plate 5 faces the PCR tube groove, makes the round hole 6 and the PCR tube groove in the PCR instrument one to one correspondence, of course, the inner cavity 4 also corresponds with the PCR tube groove, so that the PCR tube groove on each row or each column corresponds one inner cavity 4, so that the PCR tube in each row or each column of PCR tube groove is heated uniformly.

[0026] The utility model discloses the structure of the existing heat cover plate is changed, so that the heating of the heat cover plate is more uniform, and the heating requirement can be met without setting the heat source in the whole plate, the energy consumption is saved, and the safety factor is also improved.

Claims

1. A PCR instrument hot lid comprising a hot lid body (1), characterized in that: The heat cover body (1) comprises a heat source (2) and a heat cover plate (3), the heat source (2) is arranged close to the heat cover plate (3), the heat cover plate (3) is made of aluminum alloy material, has two opposite heat surfaces, and is internally provided with a plurality of sealed inner cavities (4) filled with refrigerant, the heat source (2) is arranged at the middle position of the heat cover plate (3) and close to one of the heat surfaces, the other heat surface of the heat cover plate (3) opposite to the heat source (2) is provided with a heat-conducting heat-conducting plate (5), the heat-conducting plate (5) is provided with a plurality of arrayed circular holes (6), and the circular holes (6) are opposite to the inner cavities (4) in position.

2. The PCR instrument thermal lid of claim 1, wherein: The heat-conducting plate (5) is made of aluminum alloy material.

3. The PCR instrument thermal lid of claim 1, wherein: The circular holes (6) are provided with heat-conducting silica gel (7).

4. The PCR instrument thermal lid of claim 1, wherein: The heat source (2) comprises at least one group of PTC heating components, each group of PTC heating components comprises a PTC heating element (21), an electrode plate (22), an insulating paper (23) and an aluminum pipe (24), the PTC heating elements (21) are arranged in a line, the opposite sides of the PTC heating element (21) are provided with electrode coatings, the electrode plate (22) is provided with two, and is arranged on the opposite sides of the PTC heating element (21) and in contact with the electrode coatings, the insulating paper (23) is wound outside the electrode plate (22), and the aluminum pipe (24) is sleeved outside the insulating paper (23). The length direction of the heat source (2) is perpendicular to the length direction of the inner cavity (4).

5. The PCR instrument thermal lid of claim 1, wherein: The diameter of the circular hole (6) is 7 mm, and the depth is 10 mm.

6. The PCR instrument thermal lid of claim 1, wherein: The PCR instrument heat cover also comprises the PCR instrument heat cover as claimed in any one of claims 1-6.

7. A PCR instrument comprising a body (100), characterized in that The heat cover body (1) comprises a heat source (2) and a heat cover plate (3), the heat source (2) is arranged close to the heat cover plate (3), the heat cover plate (3) is made of aluminum alloy material, has two opposite heat surfaces, and is internally provided with a plurality of sealed inner cavities (4) filled with refrigerant, the heat source (2) is arranged at the middle position of the heat cover plate (3) and close to one of the heat surfaces, the other heat surface of the heat cover plate (3) opposite to the heat source (2) is provided with a heat-conducting heat-conducting plate (5), the heat-conducting plate (5) is provided with a plurality of arrayed circular holes (6), and the circular holes (6) are opposite to the inner cavities (4) in position. The heat-conducting plate (5) is made of aluminum alloy material. The circular holes (6) are provided with heat-conducting silica gel (7). The heat source (2) comprises at least one group of PTC heating components, each group of PTC heating components comprises a PTC heating element (21), an electrode plate (22), an insulating paper (23) and an aluminum pipe (24), the PTC heating elements (21) are arranged in a line, the opposite sides of the PTC heating element (21) are provided with electrode coatings, the electrode plate (22) is provided with two, and is arranged on the opposite sides of the PTC heating element (21) and in contact with the electrode coatings, the insulating paper (23) is wound outside the electrode plate (22), and the aluminum pipe (24) is sleeved outside the insulating paper (23). The length direction of the heat source (2) is perpendicular to the length direction of the inner cavity (4). The diameter of the circular hole (6) is 7 mm, and the depth is 10 mm. The PCR instrument heat cover also comprises the PCR instrument heat cover as claimed in any one of claims 1-6.

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