Industrial explosion-proof dehumidifier

Abstract

The utility model provides an industry explosion -proof dehumidifier belongs to dehumidifier technical field, this industry explosion -proof dehumidifier includes the shell, is provided with the explosion -proof shell in the shell, and the explosion -proof shell divides the inside of shell into first cavity and second cavity, is provided with compressor, condenser and electric control box in the first cavity, is provided with evaporimeter in the second cavity. Compressor, condenser and evaporimeter are connected through refrigeration pipeline and form refrigeration system. Condenser includes condensing copper pipe and fin, and the fin is arranged on the condensing copper pipe, and the condensing copper pipe is connected with water supply system; The outer wall of compressor is provided with cooling jacket, and the cooling jacket is communicated with water supply system. The dehumidifier has outstanding heat dissipation performance, which helps to ensure the dehumidification efficiency of the dehumidifier, so that the dehumidifier can work stably for a long time.

Description

Technical Field

[0001] This utility model relates to the field of dehumidifier technology, and in particular to an industrial explosion-proof dehumidifier. Background Technology

[0002] In industries such as petroleum, chemical, pharmaceutical, military, aerospace, grain storage, and underground mining, flammable and explosive substances such as alkanes, hydrogen, alcohol, and dust often leak or accumulate in production or storage environments, forming explosive atmospheres when mixed with air. In these special environments, air humidity control is crucial. Excessive humidity can lead to equipment corrosion, product deterioration due to moisture, inaccurate production processes, and even create conditions for the accumulation of explosive dust. To control ambient humidity, high-powered industrial dehumidifiers are commonly used. However, conventional industrial dehumidifiers are not designed for explosive environments and pose multiple ignition risks during operation: Core components of dehumidifiers, such as compressors, fan motors, solenoid valves, contactors, and switches, inevitably generate electrical sparks, arcs, or hot spots during normal start-up, shutdown, or operation. Friction between high-speed airflow and non-metallic components like plastic fan blades, filters, and drip trays can easily generate and accumulate static charge, potentially leading to electrostatic discharge sparks. To address these safety concerns, the industry typically modifies ordinary dehumidifiers by installing a simple "explosion-proof enclosure," placing the entire unit or its main electrical components within a sealed enclosure with sufficient explosion-proof strength (often called a "positive-pressure explosion-proof cabinet" or "explosion-proof box"). While this approach improves safety to some extent, the sealed explosion-proof enclosure severely hinders heat dissipation. Heat accumulates inside, easily causing frequent shutdowns due to overheat protection, significantly reducing dehumidification efficiency. In severe cases, high temperatures can even damage components or accelerate aging, creating new safety hazards.

[0003] Therefore, existing industrial explosion-proof dehumidifiers need to be improved to overcome the shortcomings of the existing technology. Utility Model Content

[0004] To overcome the problems existing in related technologies, the purpose of this utility model is to provide an industrial explosion-proof dehumidifier with outstanding heat dissipation performance, which helps to ensure the dehumidification efficiency of the dehumidifier and enables the dehumidifier to work stably for a long time.

[0005] An industrial explosion-proof dehumidifier includes an outer shell, within which an explosion-proof enclosure is disposed. The explosion-proof enclosure divides the interior of the outer shell into a first cavity and a second cavity. A compressor, a condenser, and an electrical control box are disposed in the first cavity, and an evaporator is disposed in the second cavity. The compressor, the condenser, and the evaporator are connected by refrigeration pipes to form a refrigeration system. The condenser includes a copper condenser tube and fins, the fins being disposed on the copper condenser tube, and the copper condenser tube being externally connected to a water supply system; the outer wall of the compressor is provided with a cooling jacket, and the cooling jacket is connected to the water supply system.

[0006] In a preferred embodiment of this invention, a cooling fan is provided on one side of the condenser, the cooling fan is covered with an isolation mesh cover, and the cooling fan is located close to the electrical control box.

[0007] In a preferred embodiment of this invention, the top of the electrical control box is provided with a heat dissipation structure, which includes a cooling end and a heating end. The cooling end is located on the top of the electrical control box, and the heating end penetrates the explosion-proof shell, with the shell exposed outside the shell.

[0008] In a preferred embodiment of this invention, a connecting bolt is provided at the bottom of the outer shell, and a mounting hole opposite to the connecting bolt is provided at the bottom of the explosion-proof shell. When the explosion-proof shell is fixed in the outer shell, one end of the connecting bolt passes through the mounting hole and protrudes outside the mounting hole.

[0009] In a preferred embodiment of this utility model, a water collection tray is provided below the evaporator, and a drain outlet is provided in the middle of the water collection tray; A collection box is provided below the second cavity, and a water tank is provided in the collection box. The side wall of the collection box is provided with an openable door panel, and the door panel is provided with a handle.

[0010] In a preferred embodiment of this invention, a caster wheel is provided at the bottom of the outer casing, and a locking device is provided on the caster wheel.

[0011] In a preferred embodiment of this invention, a handrail is provided on the top of the outer shell, and an anti-slip pad is provided on the handrail.

[0012] The beneficial effects of this utility model are as follows: This utility model provides an industrial explosion-proof dehumidifier, which includes an outer shell containing an explosion-proof enclosure. The explosion-proof enclosure divides the interior of the outer shell into a first chamber and a second chamber. The first chamber houses a compressor, a condenser, and an electrical control box, while the second chamber houses an evaporator. The compressor, condenser, and evaporator are connected via refrigeration pipes to form a refrigeration system. The condenser includes condensing copper tubes and fins, with the fins mounted on the condensing copper tubes. The condensing copper tubes are connected to a water supply system. A cooling jacket is installed on the outer wall of the compressor, and the cooling jacket is connected to the water supply system. The dehumidifier's condenser adopts a shell-and-tube structure, with fins fitted on the outer side of the condensing copper tubes. Circulating water is supplied through the water supply system, resulting in a high water-cooled heat transfer coefficient and improved heat exchange efficiency. The cooling jacket is tightly fitted to the outer wall of the compressor, allowing the circulating water to directly absorb the heat generated by the compressor's operation, preventing the compressor from triggering a protection shutdown due to high-temperature overload. Furthermore, the cooling water in the cooling jacket is connected in series with the condenser's inlet water, eliminating the need for an additional water pump and reducing energy consumption. This industrial explosion-proof dehumidifier, through the structural design of its condenser and cooling jacket, enables the compressor and condenser to achieve efficient heat dissipation even inside the explosion-proof enclosure, thereby helping to ensure the dehumidifier's dehumidification efficiency and allowing it to operate stably for a long time. Attached Figure Description

[0013] Figure 1 This is a first perspective view of the industrial explosion-proof dehumidifier provided in the embodiments of this utility model; Figure 2 This is a second perspective view of the industrial explosion-proof dehumidifier provided in the embodiments of this utility model; Figure 3 This is a schematic diagram of the interior of the industrial explosion-proof dehumidifier provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the condenser provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the heat dissipation structure provided in the embodiment of this utility model being installed in the electrical control box; Figure 6 This is a schematic diagram showing the cooling jacket installed outside the compressor, as provided in an embodiment of this utility model.

[0014] Figure label: 1. Outer shell; 11. Handrail; 12. Anti-slip mat; 13. Casters; 131. Locking device; 14. Door panel; 141. Handle; 2. Explosion-proof shell; 3. Compressor; 31. Cooling jacket; 4. Electrical control box; 41. Heat dissipation structure; 411. Cooling end; 412. Heating end; 5. Isolation mesh cover; 6. Condenser; 61. Condensing copper tube; 62. Fins; 7. Evaporator. Detailed Implementation

[0015] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0016] Core components of dehumidifiers, such as compressors, fan motors, solenoid valves, contactors, and switches, inevitably generate electrical sparks, arcs, or hot spots during normal start-up, shutdown, or operation. Friction between high-speed airflow and non-metallic components like plastic fan blades, filters, and drip trays can easily generate and accumulate static charge, potentially leading to electrostatic discharge sparks. To address these safety concerns, the industry typically modifies ordinary dehumidifiers by installing a simple "explosion-proof enclosure," placing the entire unit or its main electrical components within a sealed enclosure with sufficient explosion-proof strength (often called a "positive-pressure explosion-proof cabinet" or "explosion-proof box"). While this approach improves safety to some extent, the sealed explosion-proof enclosure severely hinders heat dissipation. Heat accumulates inside, easily causing frequent shutdowns due to overheat protection, significantly reducing dehumidification efficiency. In severe cases, high temperatures can even damage components or accelerate aging, creating new safety hazards.

[0017] Based on this, this application provides an industrial explosion-proof dehumidifier.

[0018] Example See Figures 1-6 This embodiment provides an industrial explosion-proof dehumidifier, including a housing 1, and an explosion-proof shell 2 disposed in the housing 1. The explosion-proof shell 2 divides the interior of the housing 1 into a first cavity and a second cavity. The first cavity is provided with a compressor 3, a condenser 6 and an electrical control box 4, and the second cavity is provided with an evaporator 7. The compressor 3, the condenser 6 and the evaporator 7 are connected by refrigeration pipes to form a refrigeration system. The condenser 6 includes a condensing copper tube 61 and fins 62. The fins 62 are disposed on the condensing copper tube 61, which is externally connected to a water supply system. The cooling jacket 31 is a stainless steel outer shell 1 with a semi-circular cross-section. Its inner diameter is adapted to the outer wall of the compressor 3. The inner wall of the cooling jacket 31 is coated with thermally conductive silicone grease (model 7921, thermal conductivity ≥8.5W / (m・K)) to ensure complete contact with the outer wall of the compressor 3. One end of the cooling jacket 31 is provided with a cooling water inlet, and the other end is provided with a cooling water outlet. The cooling water inlet is connected to a branch pipe of the water supply system through a pipe, and the cooling water outlet is connected to the water inlet of the condenser 6 through a pipe, forming a series cooling circuit.

[0019] Specifically, the shell is made of 304 stainless steel and has an overall rectangular structure. The inner wall of the shell 1 is lined with 5mm thick explosion-proof heat insulation cotton (made of aluminum silicate fiber, with a high temperature resistance of ≥600℃) to reduce the influence of external ambient temperature on the internal cavity. The bottom of the shell 1 is equipped with casters 13 (made of polyurethane, with a load-bearing capacity of ≥50kg). The casters 13 are equipped with locking devices 131 (made of stainless steel, which fixes the wheels by a press-type locking structure). The top of the shell 1 is welded with a handrail 11, and the handrail 11 is covered with an anti-slip pad 12 (made of nitrile rubber, 5mm thick, with anti-slip texture on the surface). The bottom of the shell 1 is also welded with connecting bolts to fix the explosion-proof shell 2.

[0020] The explosion-proof enclosure 2 is made of cast aluminum. Its sidewalls are attached to the inner wall of the outer shell 1 through an explosion-proof joint surface (planar joint structure, joint surface width ≥25mm, gap ≤0.15mm), dividing the interior of the outer shell 1 into two independent cavities. The explosion-proof joint surface of the explosion-proof enclosure 2 is coated with explosion-proof sealant (model XY-401, temperature range -40℃~200℃) to prevent explosive gases from moving between the two cavities.

[0021] The refrigeration system includes a compressor 3, a condenser 6, an evaporator 7, and a throttling valve. The components are connected in sequence through refrigeration pipes (made of copper, with an outer diameter of φ12mm and a wall thickness of 1mm) to form a closed refrigeration cycle. The compressor 3 (model ZR61KC-TFD-522, explosion-proof rating ExdIIBT4Ga), the condenser 6, and the electrical control box 4 (with built-in PLC controller and contactor, explosion-proof rating ExdIIBT4Ga) are all located in the first chamber, while the evaporator 7 and the throttling valve are located in the second chamber.

[0022] The second cavity has an air inlet and an air outlet on its side wall. An explosion-proof and dustproof mesh (with a hole diameter of ≤0.5mm and made of 316 stainless steel) is installed at the air inlet, and an explosion-proof axial flow fan (model FB-90, explosion-proof rating ExdIIBT4Ga, air volume 1200m³ / h) is installed at the air outlet to drive the air to flow through the evaporator 7 to complete water separation and dehumidification.

[0023] The aforementioned industrial explosion-proof dehumidifier includes an outer casing 1, within which an explosion-proof shell 2 is installed. The explosion-proof shell 2 divides the interior of the outer casing 1 into a first chamber and a second chamber. The first chamber houses a compressor 3, a condenser 6, and an electrical control box 4. The second chamber houses an evaporator 7. The compressor 3, condenser 6, and evaporator 7 are connected via refrigeration pipes to form a refrigeration system. The condenser 6 includes condensing copper tubes 61 and fins 62. The fins 62 are mounted on the condensing copper tubes 61, which are externally connected to a water supply system. A cooling jacket 31 is installed on the outer wall of the compressor 3, and the cooling jacket 31 is connected to the water supply system. The condenser 6 of this dehumidifier adopts a shell-and-tube structure, with fins 62 fitted on the outside of the condensing copper tube 61. Circulating water is supplied through a water supply system, resulting in a high water-cooled heat transfer coefficient and improved heat exchange efficiency. The cooling jacket 31 is tightly fitted to the outer wall of the compressor 3, allowing the circulating water to directly absorb the heat generated by the compressor 3 during operation, preventing the compressor 3 from triggering a protection shutdown due to high-temperature overload. Simultaneously, the cooling water in the cooling jacket 31 is connected in series with the water inlet of the condenser 6, eliminating the need for an additional water pump and reducing energy consumption. Through the structural design of the condenser 6 and cooling jacket 31, this industrial explosion-proof dehumidifier enables efficient heat dissipation for the compressor 3 and condenser 6 even within the explosion-proof enclosure 2, thus helping to ensure the dehumidifier's dehumidification efficiency.

[0024] Furthermore, a cooling fan is provided on one side of the condenser 6, and the cooling fan is covered with an isolation mesh cover 5. The cooling fan is located close to the electrical control box 4. The isolation mesh cover 5 on the cooling fan prevents foreign objects from entering the fan; the cooling fan is located close to the electrical control box 4, which can simultaneously provide auxiliary cooling for both the condenser 6 and the electrical control box 4.

[0025] Furthermore, a heat dissipation structure 41 is provided on the top of the electrical control box 4. The heat dissipation structure 41 includes a cooling end 411 and a heating end 412. The cooling end 411 is located on the top of the electrical control box 4, and the heating end 412 penetrates the explosion-proof shell 2, with the outer shell 1 exposed outside the outer shell 1. In practical applications, four connecting bolts are also welded to the bottom of the outer shell 1. The bottom of the explosion-proof shell 2 has corresponding mounting holes. When the explosion-proof shell 2 is fixed inside the outer shell 1, one end of the connecting bolt passes through the mounting hole and is tightened with a nut.

[0026] The cooling end 411 of the heat dissipation structure 41 is directly attached to the top of the electrical control box 4, which can accurately absorb the heat generated by the operation of components such as the PLC controller and contactors inside the box (such as the Joule heat generated when the contactor is engaged, and the power consumption heat when the chip is working), avoiding the accumulation of heat inside the sealed electrical control box 4; while the heating end 412 penetrates through the explosion-proof shell 2 and the outer shell 1 and is exposed, which can directly dissipate the absorbed heat to the external environment of the equipment, rather than leaving it in the first cavity inside the explosion-proof shell 2. This can break the limitations of traditional "internal heat dissipation", avoid temperature interference to the operating environment of the compressor 3 and condenser 6 in the first cavity during the heat dissipation process, and ensure that the refrigeration system and the electrical control system are each in the optimal temperature range. The exposed design of the heating end 412 allows for direct utilization of external airflow (such as natural ventilation in the workshop or external cooling fans) to accelerate heat dissipation. Even under high ambient temperatures (≥45℃) or high load conditions (full power operation of electrical control components), it can still maintain stable heat dissipation efficiency. Actual measurements show that compared to traditional internal heat dissipation methods, the internal temperature of the electrical control box 4 is reduced by 20~25℃, effectively preventing components from aging due to high temperatures, contact oxidation, and other failures.

[0027] Furthermore, the bottom of the outer shell 1 is provided with a connecting bolt, and the bottom of the explosion-proof shell 2 is provided with a mounting hole opposite to the connecting bolt. When the explosion-proof shell 2 is fixed in the outer shell 1, one end of the connecting bolt passes through the mounting hole and protrudes outside the mounting hole.

[0028] Furthermore, a water collection tray is provided below the evaporator 7, and a drain outlet is provided in the middle of the water collection tray; A collection box is provided below the second cavity, and a water tank is provided in the collection box. An openable door panel 14 is provided on the side wall of the collection box, and a handle 141 is provided on the door panel 14.

[0029] The water collection tray below the evaporator 7 is funnel-shaped, ensuring that condensate quickly collects at the drain outlet and avoids water accumulation. The water tank inside the collection box can be easily removed through the openable door panel 14 without disassembling the equipment, reducing maintenance time and making it especially suitable for frequent drainage needs in high-humidity environments. The side wall of the collection box is connected to the openable door panel 14 via hinges, and the door panel 14 is equipped with a handle 141 for easy removal of the water tank and emptying of accumulated water.

[0030] The openable door panel 14 of the collection box and the convenient removal design of the water tank reduce maintenance steps and reduce the labor intensity of staff, making it especially suitable for rapid maintenance needs in explosion-proof environments.

[0031] Furthermore, the bottom of the outer casing 1 is provided with casters 13, and the casters 13 are provided with locking devices 131. The casters 13 at the bottom of the outer casing 1 facilitate the flexible movement of the equipment in the workshop and adapt to the needs of different dehumidification areas; the locking devices 131 can quickly fix the wheels to prevent the equipment from sliding; the top handle 11, together with the anti-slip pad 12, makes it easy to push the equipment and improves the convenience of operation.

[0032] Furthermore, the top of the outer casing 1 is also provided with a handrail 11, and the handrail 11 is provided with an anti-slip pad 12.

[0033] In practical applications, the top handle 11 is connected to the outer casing 1 by welding or bolting, and the joint is filled with explosion-proof sealant. The anti-slip pad 12 is made of non-metallic insulating material and does not generate static electricity. The handle 11 allows the dehumidifier to be moved easily, making its use more convenient.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An industrial explosion-proof dehumidifier, comprising a casing, characterized in that: An explosion-proof shell is provided inside the outer casing, which divides the interior of the outer casing into a first cavity and a second cavity. The first cavity is equipped with a compressor, a condenser, and an electrical control box, while the second cavity is equipped with an evaporator. The compressor, the condenser, and the evaporator are connected by refrigeration pipes to form a refrigeration system. The condenser includes a copper condenser tube and fins, the fins being disposed on the copper condenser tube, and the copper condenser tube being externally connected to a water supply system; the outer wall of the compressor is provided with a cooling jacket, and the cooling jacket is connected to the water supply system.

2. The industrial explosion-proof dehumidifier according to claim 1, characterized in that: A cooling fan is provided on one side of the condenser, and the cooling fan is covered with an isolation mesh cover. The cooling fan is located close to the electrical control box.

3. The industrial explosion-proof dehumidifier according to claim 2, characterized in that: The top of the electrical control box is provided with a heat dissipation structure, which includes a cooling end and a heating end. The cooling end is located on the top of the electrical control box, and the heating end penetrates through the explosion-proof shell, with the shell exposed outside the shell.

4. The industrial explosion-proof dehumidifier according to any one of claims 1-3, characterized in that: The bottom of the outer shell is provided with a connecting bolt, and the bottom of the explosion-proof shell is provided with a mounting hole opposite to the connecting bolt. When the explosion-proof shell is fixed in the outer shell, one end of the connecting bolt passes through the mounting hole and protrudes outside the mounting hole.

5. The industrial explosion-proof dehumidifier according to any one of claims 1-3, characterized in that: A water collection tray is provided below the evaporator, and a drain outlet is provided in the middle of the water collection tray; A collection box is provided below the second cavity, and a water tank is provided in the collection box. The side wall of the collection box is provided with an openable door panel, and the door panel is provided with a handle.

6. The industrial explosion-proof dehumidifier according to any one of claims 1-3, characterized in that: The bottom of the housing is provided with casters, and the casters are provided with locking devices.

7. The industrial explosion-proof dehumidifier according to claim 6, characterized in that: The top of the outer casing is also provided with a handrail, and the handrail is provided with an anti-slip pad.

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