Hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in refrigeration equipment

Abstract

The present invention provides a hydrogen generating device, a refrigerating device and a hydrogen production control module thereof, and relates to the technical field of cold chain transportation equipment. The hydrogen generating device includes a hydrogen generator. The hydrogen generator includes a hydrogen delivery channel arranged outside the hydrogen generator and an oxygen delivery channel arranged inside the hydrogen generator. The hydrogen delivery channel is used to deliver hydrogen to the refrigerating device, and the oxygen delivery channel directly discharges oxygen to the outside. A refrigerating device is provided, including a hydrogen generating device. And a hydrogen production control module for controlling the explosion limit of the hydrogen generating device in the refrigerating device is provided. The present invention adopts hydrogen instead of traditional inert gas to preserve food placed in the refrigerating device, so as to achieve the purpose of extending the food shelf life.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain transportation equipment, and in particular to a hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device. Background Art

[0002] Hydrogen is a reducing gas. At room temperature, it is stable and not easy to react chemically with other substances. In recent years, scientific research has found that hydrogen has a better effect on food preservation than inert gases. Food decay is mainly an oxidation reaction. Adding an appropriate amount of hydrogen to the food storage environment can slow down the rate of food decay.

[0003] Therefore, how to add an appropriate amount of hydrogen into the refrigeration device of the refrigerator (cold chain transport vehicle, refrigerated box, etc.) to extend the shelf life of food has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] In view of this, one of the purposes of the present invention is to provide a hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device, so as to solve the technical problem that refrigeration devices in the prior art generally use inert gases to preserve food, but the preservation effect is poor.

[0005] A second object of the present invention is to provide a refrigeration device containing the above-mentioned hydrogen generating equipment.

[0006] A third object of the present invention is to provide a hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device.

[0007] In order to achieve one of the above-mentioned purposes, the present invention provides a hydrogen generating device, including a hydrogen generator for generating hydrogen, the hydrogen generator including a hydrogen delivery channel arranged outside the hydrogen generator and an oxygen delivery channel arranged inside the hydrogen generator, the hydrogen delivery channel is used to deliver hydrogen to a refrigeration device, and the oxygen delivery channel directly discharges oxygen to the outside.

[0008] According to a preferred embodiment, the hydrogen generator uses a hydrolysis method to prepare hydrogen and oxygen.

[0009] According to a preferred embodiment, it further comprises a hydrogen dryer for drying the hydrogen generated by the hydrogen generator, and the hydrogen dryer is arranged on the hydrogen transport channel.

[0010] According to a preferred embodiment, the hydrogen generator includes a water injection cylinder with a water seepage hole at the bottom, a partition, an ion exchange membrane and a clamping hoop, wherein the water injection cylinder, the partition, the ion exchange membrane, the partition and the clamping hoop are sequentially arranged from the inside to the outside, the water injection cylinder is set as the anode, the clamping hoop is set as the cathode, and the oxygen delivery channel extends from the bottom to the top of the water injection cylinder.

[0011] According to a preferred embodiment, a cylinder cover is provided on the top of the water injection cylinder, a water inlet, a water overflow outlet and an oxygen outlet are provided on the top, and a hydrogen outlet is provided on the bottom, and the hydrogen outlet is connected to the hydrogen delivery channel.

[0012] According to a preferred embodiment, a low-position float and / or a high-position float is provided in the water injection cylinder.

[0013] In order to achieve the second of the above objectives, the present invention provides a refrigeration device, comprising any of the hydrogen generating devices described above, wherein the hydrogen generating device is located inside or outside the refrigeration device, and the hydrogen generated by the hydrogen generating device is transported to the refrigeration device.

[0014] In order to achieve the third objective, the present invention provides a hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device, wherein the hydrogen production control module comprises a travel switch, the travel switch is mounted on the door of the refrigeration device, the travel switch is electrically connected to the hydrogen generator, when the door of the refrigeration device is closed, the hydrogen generator is started, and when the door of the refrigeration device is opened, the hydrogen generator is stopped;

[0015] The hydrogen production control module also includes a generator control module, which is used to control the explosion limit of the refrigeration device. The generator control module includes a first combustible gas concentration sensor and a generator controller installed in the refrigeration device. The first combustible gas concentration sensor and the generator controller are electrically connected. The generator controller is electrically connected to the hydrogen generator. When the first combustible gas concentration sensor detects that the hydrogen concentration reaches 3%, the concentration signal is transmitted to the generator controller, and the generator controller controls the hydrogen generator to stop working.

[0016] According to a preferred embodiment, the generator control module also includes a second combustible gas concentration sensor installed in the refrigeration device, the second combustible gas concentration sensor is electrically connected to the generator controller, and the generator controller is electrically connected to the hydrogen generator. When the first combustible gas concentration sensor is damaged and the hydrogen generator reaches the operating time of preparing hydrogen with a concentration of 3%, the second combustible gas concentration sensor is started. When the second combustible gas concentration sensor detects that the hydrogen concentration reaches 3.2%, the concentration signal is transmitted to the generator controller, and the generator controller controls the hydrogen generator to stop working.

[0017] According to a preferred embodiment, when the second combustible gas concentration sensor is damaged and the hydrogen generator reaches the operating time of producing hydrogen with a concentration of 3.2%, the generator controller controls the hydrogen generator to stop working.

[0018] The hydrogen generating equipment provided by the present invention has the following technical effects:

[0019] Compared with the traditional hydrogen generating equipment, the hydrogen generating equipment of the present invention has the same characteristics as that of the traditional hydrogen generating equipment, but the difference is that the hydrogen generating equipment of the present invention includes a separate hydrogen delivery channel and an oxygen delivery channel, wherein the oxygen delivery channel is located inside the hydrogen generator and the hydrogen delivery channel is located outside the hydrogen generator, the oxygen delivery channel directly discharges the generated oxygen to the outside, and the hydrogen delivery channel delivers the generated hydrogen to the refrigerating device, that is, hydrogen is used instead of the traditional inert gas to preserve the food placed in the refrigerating device, thereby achieving the purpose of extending the food shelf life.

[0020] The refrigeration device provided by the present invention has the following technical effects:

[0021] This kind of refrigeration device, since it includes the above-mentioned hydrogen generating device, that is, the hydrogen prepared by the hydrogen generating device is used to preserve the food placed in the refrigeration device. The hydrogen here should be in an appropriate amount to achieve the purpose of extending the shelf life of the food.

[0022] The hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device provided by the present invention has the following technical effects:

[0023] This type of hydrogen production control module includes a travel switch and a generator control module. The travel switch determines the start and stop of the hydrogen generator according to the opening and closing of the door of the refrigeration device. The generator control module is used to control the explosion limit of the refrigeration device. When the first combustible gas concentration sensor detects that the hydrogen concentration reaches 3%, the concentration signal is transmitted to the generator controller. The generator controller controls the hydrogen generator to stop working, thereby ensuring that the hydrogen is below the explosion limit of 4.0%. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic diagram of the internal structure of a hydrogen generating device according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 A schematic diagram of the internal structure of the hydrogen generating device from another angle;

[0027] Figure 3 It is composed Figure 1 A schematic diagram of the structure of a hydrogen generator of a hydrogen generating device;

[0028] Figure 4 yes Figure 3 Schematic diagram of the explosion structure of the hydrogen generator;

[0029] Figure 5 It is a flow chart of a hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration unit.

[0030] in, Figure 1-Figure 5 :

[0031] 1. Hydrogen generating equipment; 11. Hydrogen generator; 111. Water filling cylinder; 111a. Water seepage hole; 111b. Water filling port; 111c. Water overflow port; 111d. Low-level float; 111e. High-level float; 111f. Oxygen outlet; 112. Cylinder cover; 113. Clamping hoop; 114. Ion exchange membrane; 115. Spacer; 116. Sealing insulating rubber; 116a. Strip groove; 12. Hydrogen dryer; 121. Pressure transmitter; 122. Pressure gauge; 13. Solenoid valve No. 2; 14. Solenoid valve No. 1; 15. Shell; 151. Display;

[0032] 2. Hydrogen production control module;

[0033] 3. Refrigerator; 31. Door; 32. Travel switch. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] As described in the background art, the inert gas in the prior art has a certain preservation effect on food, but the decay and deterioration of food is mainly an oxidation reaction, and the preservation effect of the inert gas is limited.

[0037] Based on this, the present invention provides a hydrogen generating device. Compared with the traditional hydrogen generating device, the difference is that the hydrogen generating device of the present invention includes a separate hydrogen delivery channel and an oxygen delivery channel. The oxygen delivery channel is located inside the hydrogen generator, and the hydrogen delivery channel is located outside the hydrogen generator. The oxygen delivery channel directly discharges the generated oxygen to the outside, while the hydrogen delivery channel delivers the generated hydrogen to a refrigeration device, that is, hydrogen is used instead of traditional inert gas to preserve food placed in the refrigeration device, thereby achieving the purpose of extending the food shelf life.

[0038] The technical solution of the present invention is described in detail below in conjunction with specific embodiments.

[0039] Embodiment 1:

[0040] The hydrogen generating device 1 provided in this embodiment includes a hydrogen generator 11 and a hydrogen dryer 12 . The hydrogen generator 11 is used to prepare hydrogen, and the hydrogen dryer 12 can dry the hydrogen prepared by the hydrogen generator 11 .

[0041] like Figure 5As shown, the hydrogen generator 11 includes a hydrogen delivery channel and an oxygen delivery channel. The hydrogen delivery channel is located outside the hydrogen generator 11, and the oxygen delivery channel is located inside the hydrogen generator 11. The hydrogen delivery channel is used to deliver hydrogen to the refrigeration device. The hydrogen dryer 12 is arranged on the hydrogen delivery channel, that is, the prepared hydrogen is dried by the hydrogen dryer 12, and the oxygen delivery channel directly discharges oxygen to the outside.

[0042] It is worth noting that the hydrogen generator 11 of the present invention uses a hydrolysis method to prepare hydrogen and oxygen, that is, water is decomposed into hydrogen and oxygen by the hydrogen generator 11. Compared with other hydrogen production methods, the hydrogen generated by water electrolysis has the advantages of high purity, less equipment maintenance, low hydrogen production cost, and no pollution to the environment.

[0043] like Figure 1 and Figure 2 As shown, the hydrogen generator 11 and the hydrogen dryer 12 are both placed inside the housing 15. A No. 1 solenoid valve 14 is also provided between the hydrogen generator 11 and the hydrogen dryer 12, that is, the No. 1 solenoid valve 14 is installed on the hydrogen delivery channel, which can prevent the pressure of the hydrogen delivery channel between the hydrogen generator 11 and the hydrogen dryer 12 from being too high. Opening the No. 1 solenoid valve 14 can remove the residual hydrogen in the hydrogen delivery channel. The No. 1 solenoid valve 14 is in a normally closed state during the operation of the hydrogen generator 11.

[0044] like Figure 1 and Figure 2 As shown, a No. 2 solenoid valve 13 is also provided on the output end of the hydrogen dryer 12, which is in a normally open state during the operation of the hydrogen generator 11 to achieve the purpose of continuously delivering hydrogen to the refrigeration device.

[0045] like Figure 1 and Figure 2 As shown, in order to timely control the pressure inside the hydrogen dryer 12, a pressure transmitter 121 and a pressure gauge 122 are provided on the hydrogen dryer 12. The pressure inside the hydrogen dryer 12 is adjusted in real time by the pressure transmitter 121, and the pressure gauge 122 is used to display the pressure inside the hydrogen dryer 12.

[0046] like Figure 2 As shown, the housing 15 is also provided with a display 151, which can display the working status of the hydrogen generator 11 and the hydrogen dryer 12 in a timely manner.

[0047] The hydrogen dryer 12 includes a cylinder and a desiccant. The cylinder is provided with a cylinder cover 112. The desiccant is located in the middle of the cylinder and arranged along the length direction of the cylinder. The moist hydrogen enters the desiccant from the bottom of the cylinder, moves upward along the desiccant, and then is released from the top of the desiccant, and then moves downward along the inner wall of the cylinder until it is transported to the refrigeration device.

[0048] like Figure 3 and Figure 4 As shown, the hydrogen generator 11 includes a water injection cylinder 111 with water seepage holes 111a at the bottom. The water seepage holes 111a are evenly or unevenly arranged. As long as the purpose of water seepage is achieved, it is within the protection scope of the present invention. The water seepage holes 111a serve the purpose of water seepage outward. In addition, the water injection cylinder 111 is made of stainless steel with low processing cost. The water injection cylinder 111 is set as an anode.

[0049] The hydrogen generator 11 further includes a spacer 115 , an ion exchange membrane 114 , a clamping hoop 113 and a sealing insulating rubber 116 .

[0050] like Figure 3 , Figure 4 and Figure 5 As shown, from inside to outside, the water injection cylinder 111, the screen 115, the ion exchange membrane 114, the screen 115 and the clamp 113 are sequentially sleeved, that is, the ion exchange membrane 114 is located between two layers of screens 115, the screen 115, the ion exchange membrane 114, the screen 115 and the clamp 113 are sleeved on one end of the water injection cylinder 111 with the water seepage hole 111a, and the sealing insulating rubber 116 is a cylindrical body with two ends open, with a vertical strip groove 116a, and the part where the screen 115 and the ion exchange membrane 114 have a specific effect is located in the strip groove 116a. In addition, the clamp 113 is also made of stainless steel, with low processing cost, and the clamp 113 is set as a cathode.

[0051] A cylinder cover 112 is provided on the top of the water injection cylinder 111, which covers the water injection cylinder 111, so that the water injection cylinder 111 is in a closed state. A water adding port 111b, an overflow port 111c and an oxygen outlet 111f are also provided on the top. The water adding port 111b can be directly used to manually add water to the water injection cylinder 111. When the water volume reaches a certain level, it overflows outward through the overflow port 111c. The oxygen outlet 111f is connected to the oxygen delivery channel inside the water injection cylinder 111. The oxygen delivery channel extends from the bottom to the top of the water injection cylinder 111, thereby discharging the prepared oxygen to the outside.

[0052] like Figure 3 As shown, a hydrogen outlet is provided below the water injection cylinder 111 , and specifically, the hydrogen outlet is located on the side wall of the clamping hoop 113 , and the hydrogen outlet is communicated with the hydrogen delivery channel.

[0053] In order to control the water level in the water injection cylinder 111, Figure 5 As shown, a low-position float 111d and / or a high-position float 111e are provided in the water injection cylinder 111.

[0054] Specifically, when the water volume in the water filling cylinder 111 decreases to a certain level, the low-level float 111d sends out a signal indicating the water level is low, prompting you to add water; when the water volume in the water filling cylinder 111 increases to a certain level, the high-level float 111e sends out a signal indicating the water level is high, prompting you to stop adding water.

[0055] The low-position float 111d is used only for manual water addition, while the high-position float 111e and the low-position float 111d can be used for automatic water addition in combination.

[0056] Hydrogen generator 11 principle description:

[0057] Distilled water is filled into the hydrogen generator 11 from the water inlet 111b. When water flows out from the overflow outlet 111c, it indicates that the water has been filled.

[0058] The distilled water in the hydrogen generator 11 enters between the cathode plate as the clamp 113 and the ion exchange membrane 114 through the permeation hole of the water injection cylinder 111. The ion exchange membrane 114 has ion selective permeability, that is, it can pass water and ions but not gas.

[0059] Connect 5VDC power supply,

[0060] Cathode: 4H2O+4e - =2H2↑+4OH -

[0061] Anode: 4OH - -4e - =2H2O+O2↑

[0062] Overall reaction formula: 2H2O=2H2↑+O2↑

[0063] The O2 produced by the anode of the water injection cylinder 111 is directly discharged to the outside through the oxygen outlet 111f, and the H2 produced by the cathode of the clamping hoop 113 carries part of the water into the hydrogen dryer 12.

[0064] Embodiment 2:

[0065] The refrigeration device provided in this embodiment includes the hydrogen generating device 1 in Embodiment 1. The hydrogen generating device 1 is located inside or outside the refrigeration device, and the hydrogen generated by the hydrogen generating device 1 is transported to the refrigeration device, that is, the hydrogen dried by the hydrogen dryer 12 is transported to the refrigeration device.

[0066] It should be noted that the refrigeration device of the present invention can specifically be a refrigerator 3, a cold chain transport vehicle, or a cold storage box. As long as it has a refrigeration function, it is within the protection scope of the present invention.

[0067] Furthermore, the hydrogen generating device 1 may be located inside or outside the refrigeration device, and as long as the purpose of transporting dry hydrogen can be achieved, it is within the protection scope of the present invention.

[0068] like Figure 5 As shown, the refrigeration device is a refrigerator 3 having a refrigerator door 31 , on which a travel switch 32 is installed, and the hydrogen generating device 1 is located outside the refrigerator 3 .

[0069] Embodiment 3:

[0070] This embodiment provides a hydrogen production control module 2. Since the minimum explosion limit of hydrogen is 4.0% (volume fraction), safety of use is given top priority when designing the hydrogen generating equipment 1. Therefore, the hydrogen production control module 2 of this embodiment can be used to control the explosion limit of the refrigeration device containing the hydrogen generating equipment 1 mentioned in Example 2.

[0071] Specifically, the hydrogen production control module 2 includes a travel switch 32, such as Figure 5 As shown, the travel switch 32 is installed on the door 31 of the refrigeration device. The travel switch 32 is electrically connected to the hydrogen generator 11. When the door 31 of the refrigeration device is closed, the hydrogen generator 11 is started, and when the door 31 of the refrigeration device is opened, the hydrogen generator 11 is stopped.

[0072] The hydrogen production control module 2 also includes a generator control module, which is used to control the explosion limit of the refrigeration device.

[0073] Further, the generator control module includes a first combustible gas concentration sensor and a generator controller installed in the refrigeration device, such as Figure 5 As shown, in this embodiment, the first combustible gas concentration sensor is installed on the refrigerator 3, the first combustible gas concentration sensor is electrically connected to the generator controller, the generator controller is electrically connected to the hydrogen generator 11, and when the first combustible gas concentration sensor detects that the hydrogen concentration in the refrigerator 3 reaches 3%, the concentration signal is transmitted to the generator controller, and the generator controller controls the hydrogen generator 11 to stop working.

[0074] Furthermore, the generator control module also includes a second combustible gas concentration sensor installed in the refrigeration device, such as Figure 5 As shown, in this embodiment, the second combustible gas concentration sensor is installed on the refrigerator 3, the second combustible gas concentration sensor is electrically connected to the generator controller, and the generator controller is electrically connected to the hydrogen generator 11.

[0075] That is, when the first combustible gas concentration sensor is damaged and the hydrogen generator 11 has reached the operating time for preparing hydrogen at a concentration of 3%, the second combustible gas concentration sensor is started. When the second combustible gas concentration sensor detects that the hydrogen concentration has reached 3.2%, the concentration signal is transmitted to the generator controller, and the generator controller controls the hydrogen generator 11 to stop working. When the second combustible gas concentration sensor is damaged and the hydrogen generator 11 has reached the operating time for preparing hydrogen at a concentration of 3.2%, the generator controller controls the hydrogen generator 11 to stop working.

[0076] The hydrogen production control module 2 also includes a drying control module, which is used to control the use time of the desiccant in the hydrogen dryer 12. The drying control module includes a timer and an alarm. The timer is electrically connected to the alarm. When the timer reaches the set time, the signal is transmitted to the alarm, and the alarm sounds an alarm.

[0077] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device, characterized in that: The hydrogen production control module includes a travel switch, which is installed on the door of the refrigeration device and is electrically connected to the hydrogen generator. When the door of the refrigeration device is closed, the hydrogen generator is started, and when the door of the refrigeration device is opened, the hydrogen generator is stopped; The hydrogen production control module also includes a generator control module, which is used to control the explosion limit of the refrigeration device. The generator control module includes a first combustible gas concentration sensor and a generator controller installed in the refrigeration device. The first combustible gas concentration sensor is electrically connected to the generator controller, and the generator controller is electrically connected to the hydrogen generator. When the first combustible gas concentration sensor detects that the hydrogen concentration reaches 3%, the concentration signal is transmitted to the generator controller, and the generator controller controls the hydrogen generator to stop working; The generator control module further includes a second combustible gas concentration sensor installed in the refrigeration device, the second combustible gas concentration sensor is electrically connected to the generator controller, the generator controller is electrically connected to the hydrogen generator, when the first combustible gas concentration sensor is damaged, and the hydrogen generator reaches the operation time of preparing hydrogen with a concentration of 3%, the second combustible gas concentration sensor is started, when the second combustible gas concentration sensor detects that the hydrogen concentration reaches 3.2%, the concentration signal is transmitted to the generator controller, and the generator controller controls the hydrogen generator to stop working; When the second combustible gas concentration sensor is damaged and the hydrogen generator reaches the running time when the hydrogen concentration is 3.2%, the generator controller controls the hydrogen generator to stop working; The hydrogen production control module also includes a drying control module, which is used to control the use time of the desiccant in the hydrogen dryer. The drying control module includes a timer and an alarm, and the timer is electrically connected to the alarm.

2. The hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in a refrigeration device according to claim 1, characterized in that: The hydrogen generating device comprises a hydrogen generator for generating hydrogen, the hydrogen generator comprises a hydrogen delivery channel arranged outside the hydrogen generator and an oxygen delivery channel arranged inside the hydrogen generator, the hydrogen delivery channel is used to deliver hydrogen to the refrigeration device, and the oxygen delivery channel directly discharges oxygen to the outside.

3. The hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in a refrigeration device according to claim 2, characterized in that: The hydrogen generator adopts a hydrolysis method to prepare hydrogen and oxygen.

4. The hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in a refrigeration device according to claim 2, characterized in that: It also includes a hydrogen dryer for drying the hydrogen generated by the hydrogen generator, and the hydrogen dryer is arranged on the hydrogen delivery channel.

5. The hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in a refrigeration device according to claim 4, characterized in that: The hydrogen generator includes a water injection cylinder with a water seepage hole at the bottom, a partition, an ion exchange membrane and a clamping hoop, wherein the water injection cylinder, the partition, the ion exchange membrane, the partition and the clamping hoop are sequentially arranged from the inside to the outside, the water injection cylinder is set as the anode, the clamping hoop is set as the cathode, and the oxygen delivery channel extends from the bottom of the water injection cylinder to the top.

6. The hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in a refrigeration device according to claim 5, characterized in that: The top of the water injection cylinder is provided with a cylinder cover which is covered on the water injection cylinder, the upper part is provided with a water inlet, a water overflow outlet and an oxygen outlet, and the lower part is provided with a hydrogen outlet, and the hydrogen outlet is communicated with the hydrogen delivery channel.

7. The hydrogen production control module for controlling the explosion limit of hydrogen generating equipment in a refrigeration device according to claim 5, characterized in that: A low-position floating ball and / or a high-position floating ball are arranged in the water injection cylinder.

8. A hydrogen production control module for controlling the explosion limit of a hydrogen generating device in a refrigeration device according to any one of claims 2 to 7, characterized in that: The hydrogen generating device is located inside or outside the refrigerating device, and the hydrogen generated by the hydrogen generating device is transported to the refrigerating device.

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