Temperature control system suitable for film punching machine
By installing a heat insulation plate and a hot bath heating system in the film developing machine, the problem of temperature instability between chemical baths was solved, and the uniformity of chemical temperature and the stability of washing effect were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EBANG ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-04-14
AI Technical Summary
There is a problem of temperature instability in the chemical tanks of existing film developing machines, which leads to uneven developing quality.
Insulation plates are installed between adjacent medicine tanks, and a hot bath heating system is used. The heating box and the jacket are connected by a circulating pump. The temperature of the medicine is controlled by heating components and cooling plates and a microcomputer to ensure the uniformity of temperature in the medicine tank.
It effectively reduces the impact of heat conduction between the medicine tanks, ensures the stability of the medicine temperature, and improves the rinsing quality.
Smart Images
Figure CN224122929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of film developing machine technology, specifically to a temperature control system suitable for film developing machines. Background Technology
[0002] A film developing machine is a specialized piece of equipment used specifically for developing traditional films, such as 135 and 120 films. It handles the chemical processes of developing, fixing, washing, and drying the film, transforming the photographic film into viewable negatives or photographs. Its core function is to ensure consistent film quality by precisely controlling the temperature of the chemicals, soaking time, and mechanical transmission, avoiding problems such as unevenness, overexposure, or underexposure that can occur with manual developing.
[0003] The developing effect is extremely sensitive to temperature, so precise control of the chemical solution temperature is crucial. For example, the developing temperature for black and white film typically needs to be maintained at 20°C, while color film requires higher and more stringent temperature control. Existing film developing machine temperature control systems mainly consist of heating rods, temperature sensors, cooling plates, and a microcomputer. The heating rod is installed inside the chemical solution tank to heat the solution; the cooling plate is installed on one side of the chemical solution tank, with its cooling surface in contact with the side plate; the temperature sensor is installed inside the chemical solution tank to monitor the solution temperature in real time; and the microcomputer controls the operation of the heating rod and cooling plate according to preset temperature values. Although this structure is simple, film developing machines typically have multiple chemical solution tanks to hold different types of solutions, such as color developing and fixing solutions. To save space, these tanks are usually arranged closely together. During the developing process, different chemical solution tanks have different temperature requirements, and the side walls of adjacent tanks may transfer heat to each other, affecting the temperature stability of the internal solutions and thus the developing quality. Utility Model Content
[0004] The purpose of this invention is to overcome the technical defects in the prior art where heat transfer between the side walls of the liquid tank causes unstable internal liquid temperature, and to provide a temperature control system suitable for film processing machines.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a temperature control system suitable for a film developing machine, comprising a chemical tank and a temperature sensor disposed therein, and further comprising a cooling element, a heating element and a microcomputer. Multiple chemical tanks are provided and closely arranged, with a heat insulation plate between adjacent chemical tanks. Each chemical tank includes an inner shell and an outer shell, forming a sandwich layer between them. A heating box is provided at the bottom of the chemical tank, and the heating element is disposed inside the heating box. Both the heating box and the sandwich layer are filled with bathing liquid. A circulation pump is provided on the heating box, and the sandwich layer and the heating box are connected through the circulation pump. The cooling element is fixed to the side wall of the heating box.
[0006] Furthermore, the heating box has a plate-like structure with a heating liquid cavity inside.
[0007] Furthermore, the heating element has a sheet-like structure, and the heating element and the cooling element are respectively disposed on the two sides of the heating box with the largest area.
[0008] Furthermore, a conduit is provided inside the hot bath cavity, and the hot bath liquid is located inside the conduit.
[0009] Furthermore, the catheter is arranged in an S-shape.
[0010] Furthermore, both the cooling chip and the heating component are electrically connected to the microcomputer.
[0011] Furthermore, the medicine tank is equipped with a stirring paddle.
[0012] The beneficial effects of this invention are as follows: A heat insulation plate is installed between two adjacent medicinal liquid tanks, effectively reducing temperature conduction between them. Heating the medicinal liquid in the tanks using a hot bath ensures uniform heating. Even if heat conduction still exists between the two tanks, it will not directly affect the temperature of the medicinal liquid within the tanks. Furthermore, during the circulation of the hot bath, the potential negative impacts of heat conduction between the two tanks are further reduced. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the film rewinding machine of this utility model;
[0014] Figure 2 This is a schematic diagram of the temperature control system of the film processing machine of this utility model;
[0015] Figure 3 This is a schematic diagram of the temperature control system of the film processing machine of this utility model;
[0016] Figure 4 This is a perspective view of the heating box in this utility model;
[0017] Figure 5 This is a schematic diagram of the longitudinal section structure of the temperature control system of the film processing machine of this utility model.
[0018] 1. Temperature sensor; 2. Heating component; 3. Cooling element; 4. Liquid tank; 5. Microcomputer; 6. Insulation plate; 7. Inner shell; 8. Outer shell; 9. Interlayer; 10. Heating box; 11. Circulation pump; 12. Hot water bath cavity; 13. Conduit; 14. Stirring paddle. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0020] Embodiments of this utility model: such as Figure 1 As shown, a temperature control system suitable for a film developing machine includes a chemical tank 4 and a temperature sensor 1 disposed therein, as well as a cooling element 3, a heating element 2 and a microcomputer 5. Multiple chemical tanks 4 are provided and closely arranged. A heat insulation plate 6 is provided between the side walls of two adjacent chemical tanks 4. Each chemical tank 4 includes an inner shell 7 and an outer shell 8, forming a sandwich layer 9 between them. A heating box 10 is provided at the bottom of the chemical tank 4. The heating element 2 is disposed inside the heating box 10. Both the heating box 10 and the sandwich layer 9 are filled with bathing liquid. A circulation pump 11 is provided on the heating box 10, and the sandwich layer 9 and the heating box 10 are connected through the circulation pump 11. The cooling element 3 is fixed to the side wall of the heating box 10.
[0021] It is worth noting that the refrigeration element 3 is a semiconductor refrigeration element.
[0022] It is worth noting that the heating box 10 corresponds one-to-one with the medicine tank 4.
[0023] With the above structure, the bath liquid is heated in the heating box 10, and then pumped into the jacket 9 by the circulation pump 11. It exchanges heat with the liquid inside the medicine tank 4 through the inner shell 7 for heating. When the temperature of the medicine detected by the temperature sensor 1 is lower than the minimum value of the set temperature range, the heating component 2 continues to heat. When the temperature of the medicine detected by the temperature sensor 1 enters the set temperature range, the heating component 2 stops heating. When the temperature of the medicine detected by the temperature sensor 1 is higher than the maximum value of the set temperature range, the cooling chip 3 works to cool and dissipate heat.
[0024] like Figure 2 , 4 As shown, the heating box 10 has a plate-like structure and an internal hot water cavity 12.
[0025] The heating element 2 has a sheet-like structure, and the heating element 2 and the cooling element 3 are respectively arranged on the two sides of the heating box 10 with the largest area.
[0026] The above structure maximizes the contact area between the heating element 2, the cooling element 3, and the hot bath liquid, thereby achieving the fastest heating and cooling operation.
[0027] The hot bath fluid cavity 12 is provided with a conduit 13, and the hot bath fluid is located inside the conduit 13.
[0028] like Figure 4 As shown, the conduit 13 is arranged in an S-shape.
[0029] The cooling element 3 and the heating element 2 are both electrically connected to the microcomputer 5.
[0030] As with existing technology, the cooling element 3 and the heating element 2 are controlled by a microcomputer 5.
[0031] like Figure 3 , 5 As shown, the medicine tank 4 is equipped with a stirring paddle 14.
[0032] The medicine liquid is stirred by the stirring paddle 14 to ensure that the medicine liquid is heated evenly.
[0033] In a specific implementation of this utility model, the bath liquid is heated in the heating box 10, and then continuously pumped into the jacket 9 by the circulation pump 11 for continuous heat exchange. When the temperature of the medicine liquid detected by the temperature sensor 1 is lower than the minimum value of the set temperature range, the heating component 2 continues to heat. When the temperature of the medicine liquid detected by the temperature sensor 1 enters the set temperature range, the heating component 2 stops heating. When the temperature of the medicine liquid detected by the temperature sensor 1 is higher than the maximum value of the set temperature range, the cooling plate 3 works to cool and dissipate heat, heating or cooling the medicine liquid. The heat insulation plate 6 between two adjacent medicine liquid tanks 4 separates the two medicine liquid tanks 4, reducing heat transfer between the two medicine liquid tanks 4.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A temperature control system for a film developing machine, comprising a chemical tank (4) and a temperature sensor (1) disposed therein, further comprising a cooling element (3), a heating element (2) and a microcomputer (5), wherein multiple chemical tanks (4) are provided and closely arranged, characterized in that: A heat insulation plate (6) is provided between the side walls of two adjacent liquid tanks (4). The liquid tank (4) includes an inner shell (7) and an outer shell (8), with a sandwich layer (9) formed between them. A heating box (10) is provided at the bottom of the liquid tank (4). The heating component (2) is set inside the heating box (10). Both the heating box (10) and the sandwich layer (9) are filled with bathing hot liquid. A circulation pump (11) is provided on the heating box (10), and the sandwich layer (9) and the heating box (10) are connected through the circulation pump (11). The cooling chip (3) is fixed on the side wall of the heating box (10).
2. The temperature control system for a film processing machine according to claim 1, characterized in that: The heating box (10) has a plate-like structure and a hot bath liquid cavity (12) is provided inside.
3. The temperature control system for a film developing machine according to claim 2, characterized in that: The heating element (2) has a sheet-like structure, and the heating element (2) and the cooling element (3) are respectively arranged on the two sides with the largest area of the heating box (10).
4. The temperature control system for a film processing machine according to claim 3, characterized in that: The hot bath cavity (12) is provided with a conduit (13), and the hot bath liquid is located inside the conduit (13).
5. A temperature control system for a film processing machine according to claim 4, characterized in that: The catheter (13) is arranged in an S-shape.
6. A temperature control system for a film processing machine according to claim 1, characterized in that: The cooling chip (3) and heating component (2) are both electrically connected to the microcomputer (5).
7. A temperature control system for a film processing machine according to claim 1, characterized in that: The medicine tank (4) is equipped with a stirring paddle (14).