Fault detection device for cooling fan

Abstract

The fault detection device comprises a power supply, a power supply module, a detection module and an alarm prompt module, the power supply is electrically connected with the power supply module and the heat dissipation fan respectively, the power supply is used for supplying power to the power supply module and the heat dissipation fan, and the detection module is used for detecting the fault of the heat dissipation fan. The detection module is electrically connected with the power module and the alarm prompting module, the power module is used for supplying power to the detection module, and the detection module is further electrically connected with the cooling fan through a Hall output line; the detection module is used for judging whether the cooling fan breaks down or not and sending out a fault instruction to the alarm prompt module when the cooling fan breaks down, and the alarm prompt module is used for sending out an alarm prompt after receiving the fault instruction. According to the fault detection device for the cooling fan, the service life of the fan is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit detection, in particular to a fault detection device for a heat dissipation fan. Background Art

[0002] As power electronics technology gradually develops toward high power, modularization, integration, and high frequency, the cooling system of high-power inverters becomes particularly important. The cooling fan plays a crucial role in high-power inverters. As high-power inverters operate for extended periods, the temperatures of main power components such as bus capacitors and inverter modules gradually rise. The continuous operation of the cooling fan keeps the temperatures of these main power components within normal ranges.

[0003] However, under long-term uninterrupted operation, the cooling fan will operate poorly, and problems such as bearing oscillation, fan stalling, and fan reversal may occur, which will greatly reduce the stability and reliability of the inverter cooling system and shorten the service life of the fan. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present invention is that a heat dissipation fan may malfunction during long-term uninterrupted operation.

[0005] In order to solve the above problems, an embodiment of the present utility model provides a fault detection device for a heat dissipation fan, which can quickly detect whether there is a fault in the heat dissipation fan and give a prompt.

[0006] According to the utility model, a fault detection device for a heat dissipation fan includes a power supply, a power module, a detection module and an alarm prompt module. The power supply is electrically connected to the power module and the heat dissipation fan respectively, and the power supply is used to supply power to the power module and the heat dissipation fan. The detection module is electrically connected to the power module and the alarm prompt module respectively, and the power module is used to supply power to the detection module. The detection module is also electrically connected to the heat dissipation fan via a Hall output line. The detection module is used to judge whether a fault occurs in the heat dissipation fan and to issue a fault instruction to the alarm prompt module when a fault occurs. The alarm prompt module is used to issue an alarm prompt after receiving the fault instruction.

[0007] Optionally, the power supply includes four ports R, S, T, and N, and the R, S, and T ports are connected to power terminals of a heat dissipation fan.

[0008] Optionally, the R and N ports are connected to input power supply ports of a power module.

[0009] Optionally, the output power supply end of the power module is connected to the detection module.

[0010] Optionally, the power supply is a 380VAC power supply.

[0011] Optionally, the power supply module is a BUCK step-down power supply.

[0012] Optionally, the alarm prompt module includes an indicator light connected to the detection module.

[0013] Optionally, the alarm prompt module includes a relay connected to the detection module.

[0014] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0015] The fault detection device for a cooling fan provided in the embodiment of the present application, by setting a detection module, can quickly determine whether the fan has abnormal speed, fan jam, or reverse fault by judging whether the frequency, size, and direction of the Hall output sampling signal are abnormal, when a fault occurs in the cooling fan. This improves the stability and reliability of the high-power inverter cooling system, allows staff to grasp the cause of the fault and repair it in a timely manner, thereby increasing the service life of the cooling fan and reducing the company's cost expenditure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0017] 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 A circuit diagram of a fault detection device for a heat dissipation fan and a heat dissipation fan provided in an embodiment of the present application.

[0020] Reference numerals

[0021] 1. Power supply; 2. Power module; 3. Detection module; 4. Indicator light; 5. Relay. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0024] It should also be understood that the terms used in this specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0025] like Figure 1 As described, an embodiment of the utility model provides a fault detection device for a heat dissipation fan, which is used to perform fault detection on the heat dissipation fan, including a power supply 1, a power supply module 2, a detection module 3 and an alarm prompt module, wherein the power supply 1 is electrically connected to the power supply module 2 and the heat dissipation fan respectively, and the detection module 3 is electrically connected to the power supply module 2, the alarm prompt module and the heat dissipation fan respectively. Specifically, the detection module 3 is electrically connected to the Hall plate inside the heat dissipation fan through a Hall output line.

[0026] Furthermore, the power supply 1 is used to power the power module 2 and the cooling fan, which is specifically a 380VAC power supply, which provides 380VAC power to the cooling fan and 220VAC power to the power module 2; the power module 2 is used to power the detection module 3, which is specifically a BUCK step-down power supply, which outputs 5V voltage to the detection module 3; the detection module 3 is used to judge whether the cooling fan has a fault and send a fault instruction to the alarm prompt module when a fault occurs, specifically by detecting the frequency, size and direction of the Hall output sampling signal to judge whether the cooling fan has abnormal speed, stall and reverse conditions, thereby improving the stability and reliability of the high-power inverter cooling system, and the staff can grasp the cause of the fault and repair it in time, thereby improving the service life of the cooling fan and reducing the company's cost expenditure; the alarm prompt module is used to issue an alarm prompt after receiving a fault instruction.

[0027] As a specific embodiment, the power supply 1 includes four ports R, S, T, and N, among which the R, S, and T ports are connected to the power terminals of the cooling fan; among which the R and N ports are connected to the input power supply port of the power module 2.

[0028] As a specific embodiment, the output power supply end of the power module 2 is connected to the detection module 3 .

[0029] In an embodiment of the present invention, the alarm prompt module includes an indicator light 4 and a relay 5, each connected to the detection module 3. The relay 5 is also connected to the D1 port of an external high-power inverter. The indicator light 4 indicates by displaying different colors, and the relay 5 causes the external high-power inverter to indicate by changing the state of the D1 port. Specifically, when no fault is detected, the indicator light 4 displays a first color and the relay 5 is in a normally closed state. When a fault is detected, the detection module 3 issues a fault command, the indicator light 4 displays a second color, and the relay 5 is in a normally open state, causing the state of the D1 port to change. The external high-power inverter issues an alarm prompt based on the change in the state of the D1 port. It is understood that the first color and the second color are two colors that are relatively distinct to indicate different states. Including but not limited to the above, the alarm prompt module may also include only the indicator light 4, or only the relay 5, or include other modules that can be used for alarms, such as an alarm bell, as long as it can issue an alarm to warn staff.

[0030] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0036] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0037] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A fault detection device for a heat dissipation fan, used for performing fault detection on the heat dissipation fan, characterized by: It includes a power supply, a power module, a detection module and an alarm prompt module. The power supply is electrically connected to the power module and the heat dissipation fan respectively. The power supply is used to power the power module and the heat dissipation fan. The detection module is electrically connected to the power module and the alarm prompt module respectively. The power module is used to power the detection module. The detection module is also electrically connected to the heat dissipation fan through a Hall output line. The detection module is used to judge whether the heat dissipation fan has a fault and issue a fault instruction to the alarm prompt module when a fault occurs. The alarm prompt module is used to issue an alarm prompt after receiving the fault instruction.

2. The fault detection device for a heat dissipation fan according to claim 1, characterized in that: The power supply includes four ports: R, S, T, and N. The R, S, and T ports are connected to power terminals of a heat dissipation fan.

3. The fault detection device for a heat dissipation fan according to claim 2, characterized in that: The R and N ports are connected to the input power supply port of the power module.

4. The fault detection device for a heat dissipation fan according to claim 3, characterized in that: The output power supply end of the power supply module is connected to the detection module.

5. The fault detection device for a heat dissipation fan according to claim 1, characterized in that: The power supply is 380VAC.

6. The fault detection device for a heat dissipation fan according to claim 1, characterized in that: The power supply module is a BUCK step-down power supply.

7. The fault detection device for a heat dissipation fan according to claim 1, characterized in that: The alarm prompt module includes an indicator light connected to the detection module.

8. The fault detection device for a heat dissipation fan according to claim 1, characterized in that: The alarm prompt module includes a relay connected to the detection module.

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