Electromagnetic interference (EMI) test tool for dish washing machine

Abstract

The utility model relates to a dish-washing machine EMI test tool, the dish-washing machine EMI test tool comprises a shell, a power display module and a water storage device, the dish-washing machine and the power display module are respectively arranged on the outer wall of the shell, and the power display module is connected with the dish-washing machine and is used for displaying the input power of the dish-washing machine; the water storage device is arranged in the shell, is used for storing water and can be communicated with a drain pipe of the dish-washing machine and a water inlet pipe of the dish-washing machine; wherein water discharged by the drain pipe of the dish-washing machine can enter the water storage device and then enter the dish-washing machine through the water inlet pipe. The dish-washing machine EMI test tool provided by the utility model can intuitively judge whether the dish-washing machine heating disc is in a working state or not, and can supply water to the dish-washing machine.

Description

Technical Field

[0001] This application relates to the technical field of dishwasher EMI test devices, and particularly to a dishwasher EMI test tooling. Background Art

[0002] A dishwasher EMI test tooling is used to perform EMI (Electromagnetic Interference) tests on dishwashers, that is, to perform electromagnetic compatibility tests or electromagnetic interference tests on dishwashers to evaluate the electromagnetic interference generated during the operation of dishwashers and their anti-interference capabilities when receiving external electromagnetic interference. When performing an EMI test on a dishwasher, it is necessary to ensure that the heating plate of the dishwasher is in a working state to determine the harassment value under the most severe working conditions. If the EMI test is performed when the heating plate of the dishwasher is in a non-working state, the read point value of the harassment value will be too low. For example, when reading the final test point, if the heating plate has stopped working, it will cause the read point value of the harassment value to be too low and cannot reflect the normal harassment value of the dishwasher.

[0003] In related structures, during the test process, the output power of the power supply is frequently checked indirectly to determine whether the heating plate of the dishwasher is in a working state, and the operation is relatively inconvenient. Among them, the heating plate is used to heat the water in the cavity of the dishwasher. Therefore, during the operation of the EMI test tooling, an external water supply device is also required to provide water with an appropriate temperature to the dishwasher. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a dishwasher EMI test tooling that can intuitively determine whether the heating plate of the dishwasher is in a working state and can supply water to the dishwasher.

[0005] A dishwasher EMI test tooling is used to perform EMI tests on dishwashers. The dishwasher EMI test tooling includes a housing, a power display module, and a water storage device. The dishwasher and the power display module are respectively installed on the outer wall of the housing, and the power display module is connected to the dishwasher and used to display the input power of the dishwasher; the water storage device is installed inside the housing. The water storage device is used to store water and can communicate with the drain pipe and the water inlet pipe of the dishwasher; among them, the water discharged from the dishwasher drain pipe can enter the water storage device and then enter the dishwasher through the water inlet pipe.

[0006] In one embodiment, the dishwasher EMI test tooling further includes a heat dissipation device. The heat dissipation device is installed inside the housing and can dissipate heat from the water in the water storage device to reduce the water temperature in the water storage device.

[0007] In one embodiment, the water storage device includes n communicating cavities. Along the water flow direction, one cavity at the head end is used to connect to the drain pipe of the dishwasher, and one cavity at the tail end is used to connect to the water inlet pipe of the dishwasher. The number of heat dissipation devices is configured to be n - 1, and each heat dissipation device is used to dissipate heat from the water flowing through two adjacent cavities, where n≥2.

[0008] In one embodiment, n = 2, and the two cavities are configured as a first cavity and a second cavity. The first cavity is used to connect to the drain pipe of the dishwasher, and the second cavity is used to connect to the water inlet pipe of the dishwasher. The heat dissipation device is located between the first cavity and the second cavity and dissipates heat from the water flowing from the first cavity to the second cavity.

[0009] In one embodiment, the heat dissipation device has a communication cavity and a refrigeration chip. The communication cavity connects two adjacent cavities. The refrigeration chip has an endothermic node and a heat dissipation node. The endothermic node is located in the water of the communication cavity, and the heat dissipation node extends out of the water surface of the communication cavity. Among them, the refrigeration chip is configured such that when an electric current flows through the refrigeration chip, the endothermic node absorbs heat and the heat dissipation node dissipates heat.

[0010] In one embodiment, the heat dissipation device further includes a fan, and the fan is used to dissipate heat from the heat dissipation node.

[0011] In one embodiment, the dishwasher EMI test tooling further includes a water pump. Along the water flow direction, the water pump connects one cavity at the head end to the drain pipe of the dishwasher.

[0012] In one embodiment, the top wall of the housing is provided with a first mounting position for mounting the dishwasher. The side wall of the housing is provided with a second mounting position, and the power display module is mounted on the second mounting position.

[0013] In one embodiment, the dishwasher EMI test tooling further includes a plurality of wheels, and the plurality of wheels are installed on the bottom wall of the housing.

[0014] In one embodiment, the wheels are configured as universal wheels.

[0015] Compared with the prior art, for the dishwasher EMI test tooling provided by the present application, the power display module displays the input power of the dishwasher. Therefore, the user can more intuitively and accurately determine whether the heating plate of the dishwasher is in a working state by viewing the value displayed on the power display module, without indirectly inferring whether the heating plate of the dishwasher is in a working state by frequently checking the output power of the power supply. Specifically, if the value displayed on the power display module reaches the preset value, it indicates that the heating plate of the dishwasher is in a working state; if the value displayed on the power display module is less than the preset value, it indicates that the heating plate of the dishwasher is not working. Moreover, by integrating the water storage device on the dishwasher EMI test tooling, when performing an EMI test on the dishwasher, the dishwasher can be directly supplied with water by the water storage device, and the water discharged from the dishwasher can enter the water storage device, thereby forming a water circulation loop. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a top view of the dishwasher EMI test tooling provided by the present application;

[0018] Figure 2 It is a side view of the assembly of the dishwasher EMI test tooling provided by the present application and the dishwasher;

[0019] Figure 3 It is a schematic diagram of the heat dissipation device provided by the present application.

[0020] Reference numerals: 100, dishwasher EMI test tooling; 10, housing; 11, first mounting position; 12, second mounting position; 20, power display module; 30, water storage device; 301, cavity; 31, first cavity; 32, second cavity; 40, heat dissipation device; 41, communication cavity; 411, water inlet; 412, water outlet; 42, thermoelectric cooler; 421, heat absorption node; 422, heat dissipation node; 43, fan; 50, water pump; 60, wheels; 200, dishwasher. Detailed Embodiments

[0021] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0025] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the related listed items.

[0026] Please refer to Figure 1 and Figure 2, this application provides a dishwasher EMI test tooling 100 for performing EMI tests on a dishwasher 200. The dishwasher EMI test tooling 100 includes a housing 10, a power display module 20, and a water storage device 30. The dishwasher 200 and the power display module 20 are respectively installed on the outer wall of the housing 10, and the power display module 20 is connected to the dishwasher and is used to display the input power of the dishwasher 200; the water storage device 30 is installed inside the housing 10, and the water storage device 30 is used for storing water and can communicate with the drain pipe and the water inlet pipe of the dishwasher 200; wherein, the water discharged from the drain pipe of the dishwasher 200 can enter the water storage device 30, and then enter the dishwasher 200 through the water inlet pipe.

[0027] It should be noted that other modules involved in performing EMI tests on the dishwasher 200 are conventional technologies in this field and will not be elaborated here. The power display module 20 displays the input power of the dishwasher 200. Therefore, users can more intuitively and accurately judge whether the heating plate of the dishwasher 200 is in a working state by viewing the value displayed on the power display module 20, rather than indirectly inferring whether the heating plate of the dishwasher 200 is in a working state by frequently checking the output power of the power supply. Specifically, if the value displayed on the power display module 20 reaches a preset value, it means that the heating plate of the dishwasher 200 is in a working state; if the value displayed on the power display module 20 is less than the preset value, it means that the heating plate of the dishwasher 200 is not working. Moreover, by integrating the water storage device 30 on the dishwasher EMI test tooling 100, when performing EMI tests on the dishwasher 200, the water storage device 30 can directly supply water to the dishwasher 200, and the water discharged from the dishwasher can enter the water storage device 30, thus forming a water circulation loop, which is conducive to saving water resources.

[0028] Specifically, as Figure 2 shown, the top wall of the housing 10 is provided with a first installation position 11 for installing the dishwasher 200. In this way, the dishwasher 200 can be directly placed above the housing 10, which is convenient for installation. The side wall of the housing 10 is provided with a second installation position 12, and the power display module 20 is installed in the second installation position 12. In this way, it is convenient for users to read the value of the power display module 20 from the side of the housing 10.

[0029] Furthermore, an alarm module can also be set on the dishwasher EMI test tooling 100. The alarm module is configured to emit a prompt sound to remind users that the heating plate of the dishwasher 200 is not working when the input power of the dishwasher 200 is less than the preset value.

[0030] Please continue to refer to Figure 1, the dishwasher EMI test tooling 100 further includes a heat dissipation device 40. The heat dissipation device 40 is installed in the housing 10 and can dissipate the heat of the water in the water storage device 30 to reduce the water temperature in the water storage device 30. It can be understood that when the heating plate of the dishwasher 200 works, it will heat the water in the dishwasher 200 and stop working after the water temperature in the dishwasher 200 reaches the target temperature value. As the number of EMI tests increases, the heating plate of the dishwasher 200 works multiple times, resulting in an increase in the water temperature in the water circulation loop. As a result, during subsequent EMI tests, the heating time of the heating plate of the dishwasher 200 can make the water temperature in the dishwasher 200 reach the target temperature value in a relatively short time, and further cause the heating plate to not continuously heat during the EMI test cycle. By setting the heat dissipation device 40 to cool the water in the heat dissipation device 40, the water entering the dishwasher 200 can be maintained at a relatively low and appropriate temperature, thereby ensuring that the heating plate continuously heats during the EMI test cycle.

[0031] Further, the water storage device 30 includes n connected cavities 301. Along the water flow direction, one cavity 301 at the head end is used to connect the drain pipe of the dishwasher 200, and one cavity 301 at the tail end is used to connect the water inlet pipe of the dishwasher 200. The number of heat dissipation devices 40 is configured as n - 1, and each heat dissipation device 40 is used to dissipate the heat of the water flowing through two adjacent cavities 301, where n ≥ 2. It can be understood that the relatively high-temperature water discharged from the dishwasher 200 is gradually cooled by n - 1 heat dissipation devices 40, which is beneficial to ensuring that the water entering the dishwasher 200 from the cavity 301 at the tail end remains at a relatively low and appropriate temperature.

[0032] Exemplarily, n = 2. The two cavities 301 are configured as a first cavity 31 and a second cavity 32. The first cavity 31 is used to connect the drain pipe of the dishwasher 200, and the second cavity 32 is used to connect the water inlet pipe of the dishwasher 200. The heat dissipation device 40 is located between the first cavity 31 and the second cavity 32 and dissipates the heat of the water flowing from the first cavity 31 to the second cavity 32. Of course, in other embodiments, the value of n can also be 3, 4, or 5, etc., which is specifically set according to actual needs.

[0033] Please refer to Figure 3 , optionally, in an embodiment, the heat dissipation device 40 has a communication cavity 41 and a thermoelectric cooler 42. The communication cavity 41 communicates with two adjacent cavities 301. The thermoelectric cooler 42 has an endothermic node 421 and a heat dissipation node 422. The endothermic node 421 is located in the water of the communication cavity 41, and the heat dissipation node 422 extends out of the water surface of the communication cavity 41. Among them, the thermoelectric cooler 42 is configured such that when an electric current flows through the thermoelectric cooler 42, the endothermic node 421 absorbs heat and the heat dissipation node 422 dissipates heat.

[0034] Specifically, the Peltier cooler 42 can be configured as a Peltier semiconductor cooler. The communication cavity 41 has a water inlet 411 and a water outlet 412, and the water inlet 411 and the water outlet 412 are respectively used to communicate with two adjacent cavities 301.

[0035] Furthermore, the heat dissipation device 40 further includes a fan 43, and the fan 43 is used to dissipate heat from the heat dissipation node 422. In this way, it is beneficial to improve the heat dissipation efficiency of the heat dissipation node 422, thereby enhancing the water cooling effect of the heat dissipation device 40.

[0036] In other embodiments, the heat dissipation device 40 can also be configured as a common phase change heat exchanger or fin heat exchanger, as long as it can cool the water.

[0037] As Figure 1 shown, the dishwasher EMI test tooling 100 further includes a water pump 50. Along the water flow direction, the water pump 50 communicates with a cavity 301 at the head end and the drain pipe of the dishwasher 200.

[0038] As Figure 2 shown, the dishwasher EMI test tooling 100 further includes a plurality of wheels 60, and the plurality of wheels 60 are installed on the bottom wall of the housing 10. In this way, when testing different items, it is convenient to move the dishwasher EMI test tooling 100 to the designated position, thereby saving test time.

[0039] Furthermore, the wheels 60 are configured as universal wheels. In this way, the dishwasher EMI test tooling 100 is more convenient to turn, and it is more labor-saving for users to operate.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0041] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A dishwasher EMI test tool, used for performing EMI test on a dishwasher (200), characterized in that: The dishwasher EMI test tool comprises a housing (10), a power display module (20) and a water storage device (30); the dishwasher (200) and the power display module (20) are respectively mounted on the outer wall of the housing (10), and the power display module (20) is connected to the dishwasher and is used to display the input power of the dishwasher (200); The water storage device (30) is installed in the housing (10), and is used for storing water, and can be connected to a drain pipe of the dishwasher (200) and a water inlet pipe of the dishwasher (200); wherein water discharged from the drain pipe of the dishwasher (200) can enter the water storage device (30), and then enter the dishwasher (200) through the water inlet pipe.

2. The dishwasher EMI test tool according to claim 1, characterized in that: The dishwasher EMI test tool further comprises a heat dissipation device (40), which is installed in the housing (10) and is capable of dissipating heat from water in the water storage device (30) to reduce the water temperature in the water storage device (30).

3. The dishwasher EMI test tool according to claim 2, characterized in that: The water storage device (30) comprises n interconnected cavities (301), wherein along the flow direction of water, one of the cavities (301) located at the head end is used to connect to the drain pipe of the dishwasher (200), and one of the cavities (301) located at the end end is used to connect to the water inlet pipe of the dishwasher (200); The number of the heat dissipation devices (40) is configured to be n-1, and each of the heat dissipation devices (40) is used to dissipate heat for water flowing through two adjacent cavities (301), wherein n≥2.

4. The dishwasher EMI test tool according to claim 3, characterized in that: n=2, the two cavities (301) are defined as a first cavity (31) and a second cavity (32), the first cavity (31) being used to be connected to a drain pipe of a dishwasher (200), the second cavity (32) being used to be connected to a water inlet pipe of the dishwasher (200), the heat dissipation device (40) being located between the first cavity (31) and the second cavity (32), and dissipating heat for water flowing from the first cavity (31) to the second cavity (32).

5. The dishwasher EMI test tool according to claim 3, characterized in that: The heat dissipation device (40) comprises a connecting cavity (41) and a refrigeration fin (42), wherein the connecting cavity (41) is connected to two adjacent cavities (301), and the refrigeration fin (42) comprises a heat absorption node (421) and a heat dissipation node (422), wherein the heat absorption node (421) is located in the water of the connecting cavity (41), and the heat dissipation node (422) extends out of the water surface of the connecting cavity (41); The cooling plate (42) is configured such that when current flows through the cooling plate (42), the heat absorption node (421) absorbs heat and the heat dissipation node (422) dissipates heat.

6. The dishwasher EMI test tool according to claim 5, characterized in that: The heat dissipation device (40) further comprises a fan (43), and the fan (43) is used to dissipate heat from the heat dissipation node (422).

7. The dishwasher EMI test tool according to claim 3, characterized in that: The dishwasher EMI test tool further comprises a water pump (50). Along the flow direction of water, the water pump (50) is connected to a cavity (301) located at the head end and a drain pipe of the dishwasher (200).

8. The dishwasher EMI test tool according to claim 1, characterized in that: The top wall of the shell (10) is provided with a first mounting position (11), and the first mounting position (11) is used to install the dishwasher (200); the side wall of the shell (10) is provided with a second mounting position (12), and the power display module (20) is installed at the second mounting position (12).

9. The dishwasher EMI test tool according to claim 1, characterized in that: The dishwasher EMI test tool further comprises a plurality of wheels (60), wherein the plurality of wheels (60) are mounted on the bottom wall of the shell (10).

10. The dishwasher EMI test tool according to claim 9, characterized in that: The wheel (60) is configured as a universal wheel.

Images