Embedded resistor unit

Abstract

The utility model relates to the technical field of resistors, in particular to an embedded resistor unit, which comprises an insulated support tube and a plurality of resistor modules, and two ends of the support tube are penetrated to form a heat dissipation channel; a plurality of limiting grooves are formed in the inner wall of the supporting pipe, and the resistor modules are inserted into the limiting grooves from ports of the supporting pipe in a one-to-one correspondence mode. Each resistor module comprises a plurality of resistor blocks which are arranged at intervals and a conductive strip which is used for positioning the plurality of resistor blocks and is connected in series. Compared with the prior art, the multiple resistor modules are arranged at the limiting grooves in the inner wall of the supporting pipe, more resistor modules can be contained, different numbers of resistor modules can be electrically connected according to needs during use, and use is more flexible; and when a local resistor module breaks down, the corresponding resistor module can be conveniently replaced, so that the whole resistor is not scrapped, and the application cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of resistor technology, specifically to an embedded resistor unit. Background Technology

[0002] With the development of data centers, liquid-cooled servers are becoming more and more common, leading to an increasing use of water-cooled loads. Constant power water-cooled loads allow devices to maintain constant power even when voltage fluctuates, hence their growing use in data centers. The most important component in a constant power water-cooled load is the constant power resistor, and the performance of the constant power resistor directly affects the testing performance of the constant power load.

[0003] Chinese patent document CN110033908A discloses a ceramic water-cooled resistor, including a water pump, a water tank, and a resistor assembly. The resistor assembly includes a metal outer tube, a ceramic resistor tube, a mica tube, a metal inlet pipe, and a metal outlet pipe. The mica tube is inserted inside the metal outer tube, and the ceramic resistor tube is inserted inside the mica tube. Both ends of the metal outer tube are encapsulated with quartz paste. The metal inlet pipe and the metal outlet pipe also serve as wiring leads. The water tank contains non-conductive deionized water. The water pump is connected to both the metal inlet pipe and the water tank, and the metal outlet pipe is connected to the water tank, so that the water pump drives the deionized water in the water tank to circulate sequentially through the metal inlet pipe, the ceramic resistor tube, the metal outlet pipe, and the water tank. The deionized water is in direct contact with the inner wall of the ceramic resistor tube. Heat is directly transferred to the deionized water and carried away without passing through a traditional insulation layer, thus resulting in better cooling.

[0004] The ceramic resistance tube is located inside a metal outer tube, so only one resistance tube can be installed in each metal outer tube, which makes it inconvenient to adjust the resistance value. Moreover, it is inconvenient to maintain when the resistance tube fails. Summary of the Invention

[0005] In view of the above-mentioned technical problems, the present invention provides an embedded resistor unit.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An embedded resistor unit is provided, including an insulated support tube and multiple resistor modules. The two ends of the support tube pass through to form a heat dissipation channel. Multiple limiting grooves are arranged on the inner wall of the support tube, and multiple resistor modules are inserted into the multiple limiting grooves from the ports of the support tube in a corresponding manner. Each resistor module includes multiple resistor blocks arranged separately and a conductive strip that positions and connects the multiple resistor blocks in series.

[0008] As a further option, the conductive strip of each resistor module includes a first copper strip and a second copper strip arranged in parallel, the first copper strip and the second copper strip together clamping multiple resistor blocks.

[0009] As a further option, both the first and second copper bars are flattened copper tubes with a cross-section shaped like a square.

[0010] As a further option, conductive adhesive is provided between the resistor block and the conductive strip to achieve bonding and fixation between the two.

[0011] As a further option, the support tube is a polygonal tube, with the limiting grooves respectively provided on the inner side of its multiple straight edges.

[0012] As a further option, the inner wall of the support tube is provided with an L-shaped limiting strip, and two limiting strips arranged in opposite directions together form the limiting groove, with the two sides of the resistor unit embedded in the limiting strip.

[0013] As a further option, the conductive strip and the limiting strip are interference-fitted.

[0014] As a further option, the resistor block is a PTC ceramic resistor.

[0015] As a further option, an inner tube is also inserted into the support tube, and inlet and outlet pipes connecting the inner tube are provided at both ends of the support tube.

[0016] As a further option, the support tube is provided with sealing plates at both ends, and the water inlet pipe and water outlet pipe are located at the sealing plates; the conductive strips of multiple resistor modules extend out of the sealing plates and are electrically connected to each other.

[0017] The beneficial effects of this utility model are:

[0018] Compared with the prior art, the embedded resistor unit of this utility model has multiple resistor modules arranged in the limiting groove on the inner wall of the support tube, which can accommodate more resistor modules. During use, different numbers of resistor modules can be electrically connected as needed, making it more flexible. Moreover, when a local resistor module fails, the corresponding resistor module can be replaced more easily without scrapping the entire resistor, thus saving application costs. Attached Figure Description

[0019] Fig. 1 This is a schematic diagram of the structure of an embedded resistor unit in one of the embodiments.

[0020] Fig. 2 This is an exploded view of an embedded resistor unit in one of the embodiments.

[0021] Fig. 3 The images show a cross-sectional view and a partially enlarged view of an embedded resistor unit in the embodiment.

[0022] Fig. 4 This is a cross-sectional view of another section of an embedded resistor unit in the embodiment.

[0023] Figure label:

[0024] Support tube 1, limiting groove 11;

[0025] Resistance module 2, resistance block 21, conductive strip 22, first copper strip 221, second copper strip 222;

[0026] Limiting strip 3, inner tube 4, water inlet pipe 5, water outlet pipe 6, sealing plate 7. Specific implementation manner

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] An embedded resistance unit in this embodiment, as Figs. 1 to 4 shown, includes an insulating support tube 1 and a plurality of resistance modules 2. Both ends of the support tube 1 penetrate to form a heat dissipation channel. A plurality of limiting grooves 11 are arranged on the inner wall of the support tube 1, and a plurality of resistance modules 2 are inserted into the plurality of limiting grooves 11 from the ports of the support tube 1 one by one; each resistance module 2 includes a plurality of resistance blocks 21 arranged in a separated manner and a conductive strip 22 that positions and connects the plurality of resistance blocks 21 in series.

[0029] Specifically, the conductive strip 22 of each resistance module 2 includes a first copper strip 221 and a second copper strip 222 arranged in parallel. The first copper strip 221 and the second copper strip 222 jointly clamp a plurality of resistance blocks 21.

[0030] Specifically, both the first copper strip 221 and the second copper strip 222 are structures formed by flattening a copper tube, and their cross-sections are in a mouth shape, that is, a hollow structure, which is easy to dissipate heat, and this structure can be extruded and deformed to provide a certain deformation space for the thermal expansion of the resistance block 21.

[0031] Specifically, a conductive adhesive is provided between the resistance block 21 and the conductive strip 22, so as to achieve the bonding and fixing of the two, and make the conductive strip 22 and the plurality of resistance blocks 21 fixed as a whole, which is convenient for loading and unloading.

[0032] Specifically, the support tube 1 is a polygonal tube, and the limiting grooves 11 are respectively provided on the inner sides of its multiple straight edges, and can accommodate more resistance modules 2.

[0033] Specifically, an L-shaped limiting strip 3 is provided on the inner wall of the support tube 1, and the limiting strip 3 is arranged along the length direction of the support tube 1. Two oppositely and separately arranged limiting strips 3 jointly enclose the limiting groove 11, and both sides of the resistance unit are embedded in the limiting strip 3.

[0034] Specifically, the conductive strip 22 and the limiting strip 3 are in interference fit.

[0035] Specifically, the resistance block 21 is a PTC ceramic resistor.

[0036] Specifically, an inner pipe 4 is also installed in the support pipe 1. The two ends of the support pipe 1 are provided with an inlet pipe 5 and an outlet pipe 6 that connect to the inner pipe 4. External cooling water enters from the inlet pipe 5, carries away heat through the inner pipe 4, and flows out from the outlet pipe 6.

[0037] Specifically, the support tube 1 has sealing plates 7 at both ends, and the water inlet pipe 5 and the water outlet pipe 6 are located at the sealing plates 7; the conductive strips 22 of multiple resistor modules 2 extend out of the sealing plates 7 and are electrically connected to each other.

[0038] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. An embedded resistor unit, characterized in that: It includes an insulated support tube and multiple resistor modules. Both ends of the support tube penetrate to form a heat dissipation channel; multiple limiting grooves are arranged on the inner wall of the support tube, and the multiple resistor modules are inserted into the multiple limiting grooves one by one from the ports of the support tube; each resistor module includes multiple resistor blocks arranged in a separated manner and conductive bars for positioning and connecting the multiple resistor blocks in series.

2. The embedded resistor unit according to claim 1, characterized in that: The conductive bar of each resistor module includes a first copper bar and a second copper bar arranged in parallel, and the first copper bar and the second copper bar jointly clamp the multiple resistor blocks.

3. An embedded resistor unit according to claim 2, characterized in that: Both the first copper bar and the second copper bar are structures formed by flattening copper tubes, and their cross-sections are in a shape of a square frame.

4. An embedded resistor unit according to claim 1, characterized in that: There is conductive glue between the resistor block and the conductive bar to achieve bonding and fixing between the two.

5. An embedded resistor unit according to claim 1, characterized in that: The support tube is a polygonal tube, and the limiting grooves are respectively arranged on the inner sides of its multiple straight edges.

6. An embedded resistor unit according to claim 5, characterized in that: The inner wall of the support tube is provided with L-shaped limiting strips, and the two oppositely and separately arranged limiting strips jointly enclose the limiting groove, and both sides of the resistor unit are embedded in the limiting strips.

7. An embedded resistor unit according to claim 6, characterized in that: The conductive bar and the limiting strip are in interference fit.

8. An embedded resistor unit according to claim 1, characterized in that: The resistor block is a PTC ceramic resistor.

9. An embedded resistor unit according to claim 1, characterized in that: An inner tube is also inserted through the support tube, and a water inlet pipe and a water outlet pipe communicating with the inner tube are provided at both ends of the support tube.

10. An embedded resistor unit according to claim 9, characterized in that: Sealing plates are provided at both ends of the support tube, and the water inlet pipe and the water outlet pipe are provided at the sealing plates; the conductive bars of the multiple resistor modules penetrate outside the sealing plates and are electrically connected to each other.

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