A lamp housing for a pulsed light lamp tube

Abstract

The application relates to a lamp box for a pulse light lamp tube, which comprises a box body, an internal space of the box body comprising an irradiation space and a heat dissipation space, a rotating base arranged in the irradiation space, a driver arranged in the heat dissipation space and connected with the rotating base, a heat dissipation module arranged in the heat dissipation space, a plurality of liquid cavities uniformly distributed in the heat dissipation module, a refrigeration module and an evaporation pipeline connected with the plurality of liquid cavities, a first end of the evaporation pipeline being connected with the liquid cavities, a second end of the evaporation pipeline being connected with the refrigeration module, a one-way valve being further arranged on the evaporation pipeline, the driver being used for driving the rotating base to reciprocating rotate, and a heat exchange surface of the heat dissipation module extending into the irradiation space. The lamp box for the pulse light lamp tube disclosed by the application controls the surface temperature of the lamp tube through the contact heat transfer and the dynamic adjustment of the heat exchange surface, so as to control the surface temperature of the lamp tube in the allowable range.

Description

Technical Field

[0001] This application relates to the field of lighting equipment technology, and in particular to a light box for pulsed light tubes. Background Technology

[0002] A pulsed light tube is a type of xenon lamp that produces a high-intensity flash in a very short time. Its electro-optical conversion efficiency (the proportion of light energy to input electrical energy) is relatively low, usually between 10% and 30%, with the remaining electrical energy being converted into heat.

[0003] When using pulsed light tubes in production (food illumination, product sterilization), high-power equipment requires forced air cooling or efficient liquid cooling solutions. This is because pulsed light tubes are generally used in relatively enclosed environments, and insufficient heat dissipation can cause the temperature of the pulsed light tubes to exceed the allowable range (operating temperature stabilizes at 60-80℃, with the core area not exceeding 100℃).

[0004] For long lamp tubes, air-cooling and non-contact liquid cooling solutions use air as the heat transfer medium, which results in slow heat transfer and makes it easy for the temperature of long lamp tubes to exceed the allowable range. On the other hand, contact liquid cooling solutions can easily cause uneven surface temperature of long lamp tubes, which may lead to cracking. Utility Model Content

[0005] This application provides a lamp box for pulsed light tubes, which controls the surface temperature of the lamp tube by means of contact heat transfer and dynamic adjustment of the heat exchange surface, so as to control the surface temperature of the lamp tube within the allowable range.

[0006] The above-mentioned objective of this application is achieved through the following technical solution: This application provides a light box for pulsed light tubes, including: The enclosure, and the space inside the enclosure, includes the illumination space and the heat dissipation space; The rotating base is positioned within the illumination space; The driver is located in the heat dissipation space and connected to the rotating base. The driver is used to drive the rotating base to rotate back and forth. The heat dissipation module is located in the heat dissipation space, and the heat exchange surface of the heat dissipation module extends into the irradiation space. Multiple liquid chambers are evenly distributed inside the heat dissipation module; The refrigeration module is connected to multiple liquid chambers; The evaporation pipe is connected to the liquid chamber at one end and to the refrigeration module at the other end.

[0007] In one possible implementation of this application, the cooling module is connected to the multiple liquid chambers in parallel.

[0008] In one possible implementation of this application, the multiple liquid chambers are divided into two groups; The same set of liquid chambers are spaced apart along the axis of the rotating base; The two sets of liquid chambers are arranged alternately.

[0009] In one possible implementation of this application, the evaporation pipe includes a main pipe and branch pipes, with the first end of the branch pipe connected to the corresponding liquid chamber and the second end connected to the main pipe.

[0010] In one possible implementation of this application, a graphite heat exchange plate is provided on a portion of the heat exchange surface of the heat dissipation module, and the contact area between the graphite heat exchange plate and the lamp tube is smaller than the contact area between the heat exchange surface of the heat dissipation module and the lamp tube.

[0011] In one possible implementation of this application, the contact area between the graphite heat sink and the lamp tube is 30%-40% of the contact area between the heat exchange surface of the heat dissipation module and the lamp tube.

[0012] In one possible implementation of this application, there are multiple graphite heat exchange plates that are spaced apart.

[0013] The beneficial effects of this application are as follows: The lamp box for pulsed light tubes disclosed in this application controls the surface temperature of the lamp tube by means of contact heat transfer and dynamic adjustment of the heat exchange surface. Compared with air cooling, it avoids the effects of slow heat transfer speed and rapid airflow on the product (excessive surface moisture loss). Compared with liquid cooling, it avoids uneven temperature on the surface of long lamp tubes. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a pulse light tube lamp box provided in this application.

[0015] Figure 2 This is a structural schematic diagram of a heat dissipation module and its auxiliary pipes provided in this application.

[0016] Figure 3 Based on Figure 2 A schematic diagram of the flow path is provided.

[0017] Figure 4 This is a schematic diagram of the distribution of a liquid cavity within a heat dissipation module, as provided in this application.

[0018] Figure 5 This is a schematic diagram showing the location of a graphite heat exchange plate provided in this application.

[0019] In the diagram, 1 is the housing, 2 is the rotating base, 3 is the driver, 4 is the heat dissipation module, 5 is the liquid chamber, 6 is the evaporation pipe, 7 is the refrigeration module, 11 is the irradiation space, 12 is the heat dissipation space, 41 is the graphite heat spreader, 42 is the graphite thermal conductive patch, 61 is the main pipe, and 62 is the branch pipe. Detailed Implementation

[0020] The technical solutions in this application will be further described in detail below with reference to the accompanying drawings.

[0021] This application discloses a light box for pulsed light tubes. Please refer to [link / reference]. Figure 1 and Figure 2 In some examples, the pulsed light tube light box disclosed in this application includes a housing 1, a rotating base 2, a driver 3, a heat dissipation module 4, a liquid chamber 5, an evaporation pipe 6, and a cooling module 7.

[0022] The interior space of the housing 1 is divided into two parts: the irradiation space 11 and the heat dissipation space 12. The rotating base 2 and the driver 3 are both installed in the heat dissipation space 12. The driver 3 is connected to the rotating base 2 and its function is to drive the rotating base 2 to rotate back and forth.

[0023] The pulse light tube is mounted on the rotating base 2 and can rotate as the rotating base 2 rotates.

[0024] The heat dissipation module 4 is located in the heat dissipation space 12, but the heat exchange surface of the heat dissipation module 4 extends into the irradiation space 11. The heat dissipation module 4 contacts the pulse light tube and exchanges heat with it, with the aim of reducing the surface temperature of the pulse light tube.

[0025] Multiple liquid chambers 5 are evenly distributed inside the heat dissipation module 4. These liquid chambers 5 are connected to the cooling module 7. The heat-conducting medium (liquid) generated by the cooling module 7 is sent into the liquid chambers 5 for evaporation. The resulting heat-conducting medium (gaseous) returns to the cooling module 7 through the evaporation pipe 6. Figure 3 As shown.

[0026] In some possible implementations, the cooling module 7 includes a heat exchanger and a fan. The fan delivers airflow to the heat exchanger, and the heat exchanger's heat dissipation fins are used to cool the heat transfer medium (gas).

[0027] Please see Figure 4 The purpose of having multiple liquid chambers 5 is to reduce the volume of a single liquid chamber 5, thereby effectively controlling the liquid level in the liquid chamber 5 and enabling the heat transfer medium (liquid) to evaporate quickly.

[0028] In some examples, the cooling module 7 is connected to multiple liquid chambers 5 in parallel.

[0029] At this point, the following structure is required for evaporation pipe 6: The evaporation pipe 6 includes a main pipe 61 and a branch pipe 62. The first end of the branch pipe 62 is connected to the corresponding liquid chamber 5, and the second end is connected to the main pipe 61.

[0030] The first end of the evaporation pipe 6 is connected to the liquid chamber 5, and the second end is connected to the refrigeration module 7.

[0031] The liquid chamber 5 is also connected to the refrigeration module 7 via pipes (main pipe and branch pipes). A one-way valve is installed on the branch pipe to prevent backflow within the pipes connecting the liquid chamber 5 and the refrigeration module 7. This is because the heat transfer medium (liquid) in the liquid chamber 5 increases its pressure during evaporation. At this point, the flow direction of the heat transfer medium (gaseous) is uncertain, and it may flow towards the evaporation pipe 6 or the refrigeration module 7.

[0032] The one-way valve can be opened by the heat transfer medium (liquid) pushed by the refrigeration module 7, so that the heat transfer medium (liquid) can enter the liquid chamber 5, while preventing the heat transfer medium (gas) from flowing back into the refrigeration module 7.

[0033] It should be understood that this application uses contact heat dissipation to reduce the surface temperature of the pulse light tube. When the pulse light tube is in operation, it is rotating and its surface can contact the heat dissipation module 4, thus achieving uniform heat dissipation.

[0034] In addition, this application uses evaporative cooling for heat transfer. The advantage of this method is that it is at atmospheric pressure and the probability of leakage is much lower than that of liquid cooling. In the food industry, pulsed light tube irradiation (sterilization, modification) can prevent food from being contaminated.

[0035] In some examples, such as Figure 4 As shown, multiple liquid chambers 5 are divided into two groups. The liquid chambers 5 in the same group are spaced apart along the axis of the rotating base 2. The two groups of liquid chambers 5 are staggered. The purpose of this design is to achieve full coverage of the pulse light tube, so that the surface of the pulse light tube in contact with the heat dissipation module 4 can be cooled.

[0036] In some examples, please refer to Figure 5 (Unfolding the heat dissipation surface), a graphite heat exchange plate 41 is provided on a portion of the heat exchange surface of the heat dissipation module 4. The advantage of the graphite heat exchange plate 41 is that it conducts heat quickly in the lateral direction, which can achieve uniform heat distribution on the surface of the pulse light tube. At the same time, it is also required that the contact area between the graphite heat exchange plate 41 and the lamp tube is smaller than the contact area between the heat exchange surface of the heat dissipation module 4 and the lamp tube.

[0037] Specifically, when the surface of the pulsed light tube comes into contact with the heat exchange surface of the heat dissipation module 4, its temperature will decrease. However, the rate of temperature decrease cannot be guaranteed to be uniform in different places, which may lead to local cracks and directly affect the service life of the pulsed light tube.

[0038] After adding the graphite heat spreader 41, the graphite heat spreader 41 can quickly balance the surface temperature of the pulse light tube. At this time, combined with heat exchange, the surface temperature of the pulse light tube can be reduced while ensuring the integrity of the pulse light tube.

[0039] In some possible implementations, the contact area between the graphite heat spreader 41 and the lamp tube is 30%-40% of the contact area between the heat exchange surface of the heat dissipation module 4 and the lamp tube.

[0040] In some possible implementations, the number of graphite heat spreaders 41 is multiple and spaced apart, with the aim of further improving the uniformity of the surface temperature of the pulsed light tube through multiple heat spreaders.

[0041] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A light box for pulsed light tubes, characterized in that, include: The box (1) has an internal space including an irradiation space (11) and a heat dissipation space (12). Rotate the base (2) and place it within the irradiation space (11); The driver (3) is located in the heat dissipation space (12) and connected to the rotating base (2). The driver (3) is used to drive the rotating base (2) to rotate back and forth. The heat dissipation module (4) is located in the heat dissipation space (12), and the heat exchange surface of the heat dissipation module (4) extends into the irradiation space (11). Multiple liquid cavities (5) are evenly distributed inside the heat dissipation module (4); A refrigeration module (7) is connected to multiple liquid chambers (5); The evaporation pipe (6) is connected at one end to the liquid chamber (5) and at the other end to the refrigeration module (7).

2. The lamp box for pulsed light tubes according to claim 1, characterized in that, The refrigeration module (7) is connected to multiple liquid chambers (5) in parallel.

3. The lamp box for pulsed light tubes according to claim 2, characterized in that, Multiple liquid chambers (5) are divided into two groups; The same set of liquid chambers (5) are spaced apart along the axis of the rotating base (2); Two sets of liquid chambers (5) are staggered.

4. The lamp box for pulsed light tubes according to claim 1, characterized in that, The evaporation pipe (6) includes a main pipe (61) and a branch pipe (62). The first end of the branch pipe (62) is connected to the corresponding liquid chamber (5), and the second end is connected to the main pipe (61).

5. The lamp box for pulsed light tubes according to claim 1, characterized in that, A graphite heat exchange plate (41) is provided on a part of the heat exchange surface of the heat dissipation module (4). The contact area between the graphite heat exchange plate (41) and the lamp tube is smaller than the contact area between the heat exchange surface of the heat dissipation module (4) and the lamp tube.

6. The lamp box for pulsed light tubes according to claim 4, characterized in that, The contact area between the graphite heat spreader (41) and the lamp tube is 30%-40% of the contact area between the heat exchange surface of the heat dissipation module (4) and the lamp tube.

7. The lamp box for pulsed light tubes according to claim 5 or 6, characterized in that, The number of graphite heat spreaders (41) is multiple and they are spaced apart.

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