A circulating temperature control device for flexible circuit board immersion power test

Abstract

The utility model discloses a kind of circulation temperature control devices for flexible circuit board immersion liquid power-on test, including temperature control container, heat exchanger, water inlet pipe and water outlet pipe, the temperature control container has the cavity of being able to hold water and place circuit board immersion liquid container, the cavity has the upward opening of being able to place immersion liquid container, the heat exchanger is located outside temperature control container, and its two ends are communicated with the two ends of the cavity of temperature control container by water inlet pipe and water outlet pipe respectively.The advantage is that: the liquid temperature in immersion liquid container can be balanced and adjusted and kept constantly, and the power consumption is relatively low when keeping.

Description

Technical Field

[0001] This utility model relates to a circulating temperature control device for immersion and energization testing of flexible circuit boards, belonging to the technical field of circuit testing equipment. Background Technology

[0002] For flexible circuit boards whose application environment may be affected by external media, power-on tests are conducted in the corresponding liquid medium during the research and development stage to observe their ability to withstand complex application environments, so as to make corresponding improvements.

[0003] The immersion and electrical testing of flexible circuit boards takes a long time, generally more than 200 hours, and there are different temperature range requirements. In addition, there are strict requirements for the ion content and pH value of the test liquid.

[0004] Currently, the equipment for immersion testing of flexible circuit boards is relatively rudimentary, and the following problems exist:

[0005] 1. Directly heating the test liquid with an electric heater makes it difficult to achieve a uniform and constant liquid temperature;

[0006] Second, repeated use of liquid media causes inconsistencies in its ion content and pH value, affecting the accuracy of test results from different batches. Utility Model Content

[0007] The technical problem to be solved by this invention is: how to achieve balanced regulation and constant maintenance of the temperature of the test liquid.

[0008] To address the above problems, the technical solution proposed by this utility model is as follows:

[0009] A circulating temperature control device for immersion and electrical testing of flexible circuit boards includes a temperature control container, a heat exchanger, an inlet pipe, and an outlet pipe. The temperature control container has a cavity capable of holding water and placing the circuit board immersion container. The cavity has an upward opening for inserting the immersion container. The heat exchanger is located outside the temperature control container, and its two ends are connected to the two ends of the cavity of the temperature control container through the inlet pipe and the outlet pipe, respectively.

[0010] The temperature control container has a flow equalization plate 1 and a flow equalization plate 2 at both ends of the cavity. Both the flow equalization plate 1 and the flow equalization plate 2 have several flow equalization holes that are connected on both sides, which separate the two ends of the cavity into a buffer cavity 1 and a buffer cavity 2, respectively. The water inlet hole of the cavity connected to the water inlet pipe is located on the cavity wall of the buffer cavity 1, and the water outlet hole of the cavity connected to the water outlet pipe is located on the cavity wall of the buffer cavity 2.

[0011] The distribution of the flow equalization holes on the flow equalization plate one and the flow equalization plate two is symmetrical.

[0012] The distribution of the flow equalization holes on the first and second flow equalization plates is concentrated on the flow channels formed in the cavity after the immersion container is placed in the cavity.

[0013] Pre-drilled holes for pipes are provided on the flow equalizer plate 1 and flow equalizer plate 2, as well as on the end walls at both ends of the cavity, for the liquid inlet pipe or liquid outlet pipe of the immersion container to pass through.

[0014] Beneficial effects: It can evenly regulate and maintain the temperature of the liquid in the immersion container, and the power consumption is relatively low when maintaining the temperature for a long time. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the temperature-controlled container;

[0016] Figure 2 This is a three-dimensional schematic diagram of the temperature control container, in which flow equalization plate one and flow equalization plate two are omitted;

[0017] Figure 3 This is a three-dimensional schematic diagram of the flow uniform plate one and the flow uniform plate two;

[0018] Figure 4 This is a simplified top view of the circulating temperature control device.

[0019] In the diagram: 1. Temperature control container; 10. Cavity; 101. Buffer chamber one; 102. Buffer chamber two; 103. Water inlet of the cavity; 104. Water outlet of the cavity; 2. Heat exchanger; 3. Water inlet pipe; 4. Water outlet pipe; 5. Flow equalizer one; 6. Flow equalizer two; 7. Flow equalizer hole; 8. Pipe reserved hole. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] like Figure 1As shown in Figure 4, a circulating temperature control device for immersion testing of flexible circuit boards includes a temperature control container 1, a heat exchanger 2, a water inlet pipe 3, and a water outlet pipe 4. The temperature control container 1 has a cavity 10 capable of holding water and placing the circuit board immersion container. The cavity 10 has an upward opening for inserting the immersion container. The heat exchanger 2 is located outside the temperature control container 1, and its two ends are connected to the two ends of the cavity 10 of the temperature control container 1 through the water inlet pipe 3 and the water outlet pipe 4, respectively. In application, the immersion container is placed in the cavity 10 of the water-filled temperature control container 1. The temperature of the liquid inside the immersion container is determined by the temperature of the water in the cavity 10. That is, heat exchange occurs between the liquid inside the immersion container and the water in the outer cavity 10. The temperature of the liquid inside the immersion container increases or decreases as the water temperature in the cavity 10 rises or falls. The temperature of the liquid inside the immersion container is maintained at a certain temperature by maintaining the water temperature in the cavity 10 at that temperature. The temperature of the water in the container 10 is adjusted by the heat exchanger 2 to raise, lower, or maintain a certain temperature. The heat exchanger 2 supplies water of a specific temperature to the container 10 through the inlet pipe 3, and simultaneously supplies water from the container 10 back into the heat exchanger 2 through the outlet pipe 4. This achieves a circulation of water at a specific temperature from the heat exchanger 2 through the inlet pipe 3, the container 10, and the outlet pipe 4 back into the heat exchanger 2, thus ensuring that the water in the container 10 is always maintained at a specific temperature. Since all the water entering the container 10 originates from the same source—the heat exchanger—the water entering the container 10 has a relatively uniform temperature distribution. Maintaining a specific temperature for a long time only requires adjusting the flow rate and temperature of the heat exchanger. However, existing technology uses an electric heater directly inside the container 10, which results in uneven water temperature distribution because areas closer to the heater are hotter than areas farther away. Furthermore, the temperature is lower when the power is off and higher when the power is on. Maintaining a specific temperature by continuously powering the electric heater would consume too much electricity.

[0022] like Figure 1 , 4 As shown, the temperature control container 1 has a flow equalization plate 5 and a flow equalization plate 6 at both ends of its cavity 10. Both the flow equalization plate 5 and the flow equalization plate 6 have several flow equalization holes 7 that communicate with each other on both sides, dividing the cavity 10 into a buffer cavity 101 and a buffer cavity 102. The inlet hole 103 of the cavity, connected to the inlet pipe 3, is located on the cavity wall of the buffer cavity 101, and the outlet hole 104 of the cavity, connected to the outlet pipe 4, is located on the cavity wall of the buffer cavity 102. Thus, water entering the cavity 10 first enters the buffer cavity 101 to reduce the water flow impact force, and then flows evenly and gently into the middle of the cavity 10 through the flow equalization holes 7 of the flow equalization plate 5.

[0023] like Figure 3As shown, the distribution of the flow equalization holes 7 on the first flow equalization plate 5 and the second flow equalization plate 6 is concentrated on the flow channels formed in the cavity 10 after the immersion container is placed in the cavity. The distribution of the flow equalization holes 7 on the first flow equalization plate 5 and the second flow equalization plate 6 is symmetrical. There are generally multiple immersion containers. After being placed in the cavity 10, multiple specific flow channels will be formed between the immersion containers and between the immersion containers and the side walls and bottom walls of the cavity. The distribution of the flow equalization holes is concentrated and aligned with these flow channels.

[0024] like Figure 2 , 3 As shown, pipe pre-reserved holes 8 are provided on the flow equalizer 5 and flow equalizer 6 as well as on the end walls at both ends of the cavity 10, for the liquid inlet pipe or liquid outlet pipe of the immersion container to pass through.

[0025] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A circulating temperature control device for immersion and energization testing of flexible circuit boards, characterized in that: The device includes a temperature control container (1), a heat exchanger (2), an inlet pipe (3), and an outlet pipe (4). The temperature control container (1) has a cavity (10) that can hold water and place a circuit board immersion container. The cavity (10) has an upward opening that can accommodate the immersion container. The heat exchanger (2) is located outside the temperature control container (1), and its two ends are connected to the two ends of the cavity (10) of the temperature control container (1) through the inlet pipe (3) and the outlet pipe (4), respectively.

2. The circulating temperature control device for immersion and energization testing of flexible circuit boards according to claim 1, characterized in that; The temperature control container (1) has a flow equalization plate 1 (5) and a flow equalization plate 2 (6) at both ends of the cavity (10). Both the flow equalization plate 1 (5) and the flow equalization plate 2 (6) have several flow equalization holes (7) that are connected on both sides, which separate the two ends of the cavity (10) into buffer cavity 1 (101) and buffer cavity 2 (102). The cavity inlet hole (103) connected to the water inlet pipe (3) is located on the cavity wall of buffer cavity 1 (101), and the cavity outlet hole (104) connected to the water outlet pipe (4) is located on the cavity wall of buffer cavity 2 (102).

3. The circulating temperature control device for immersion and energization testing of flexible circuit boards according to claim 2, characterized in that; The distribution of the flow equalization holes (7) on the flow equalization plate one (5) and the flow equalization plate two (6) is symmetrical.

4. The circulating temperature control device for immersion and energization testing of flexible circuit boards according to claim 3, characterized in that; The distribution of the flow equalization holes (7) on the first flow equalization plate (5) and the second flow equalization plate (6) is concentrated on the flow channels formed in the cavity (10) after the immersion container is placed into the cavity (10).

5. The circulating temperature control device for immersion and energization testing of flexible circuit boards according to claim 3, characterized in that; Pipe pre-reserved holes (8) are provided on the flow equalizer plate 1 (5) and flow equalizer plate 2 (6) as well as on the end walls at both ends of the cavity (10) for the liquid inlet pipe or liquid outlet pipe of the immersion container to pass through.

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