Carbon dioxide supply device and method with refueling exhaust interlock

Abstract

The application discloses a carbon dioxide supply device and method with a replacement and exhaust interlock, and belongs to the technical field of solid carbon dioxide gas supply. A storage part makes a plurality of bearing units ventilated through a storage exhaust passage; a transfer and isolation mechanism sends a selected unit into a pressure-bearing gas production cavity and separates the storage space. A replacement and interlock mechanism remains locked before replacement and exhaust connection and cavity pressure meet opening conditions, and remains a residual gas exhaust path during removal of a used unit, until the used unit enters a receiving position in communication with an external exhaust path. An exhaust groove and cavity side and receiving position side exhaust ports exchange exhaust through an overlapping communication area. Pressure response self-checking can be performed after the isolation of the gas supply outlet. The device is used for supplying gas to a liquid or other compatible gas end, and processing residual carbon dioxide that continues to sublimate after heat supply is stopped.

Description

Technical Field

[0001] This invention relates to an apparatus for gas supply using the sublimation of solid carbon dioxide, and more particularly to an apparatus and method for separating storage and gas production, discharging residual sublimated gas during material replacement, and interlocking the opening of the chamber. Background Technology

[0002] Solid carbon dioxide can absorb heat and be converted into gas, which can then be used to replenish carbon dioxide in liquids or other gas-consuming applications. Stopping active heating does not mean stopping gas production; environmental heat leakage and residual heat from components can still cause solid carbon dioxide to sublimate. Therefore, changing the material and opening the chamber cannot be based solely on the heater being powered off or a drop in downstream outlet pressure.

[0003] CN119684996A discloses a self-generating capsule dry ice and its application, which includes a porous structure for carbon dioxide discharge. Existing portable gas supply and gas source switching technologies also involve pressure regulation or the alternating use of multiple gas sources. Therefore, simply using a vented capsule, adding a pressure regulator, or connecting two gas sources in parallel is insufficient to explain the continuity of exhaust when residual solids are transferred from the pressure zone to the non-pressure receiving zone during refueling.

[0004] CN122163077A discloses a carbon dioxide storage device for a sparkling water machine, which includes a storage tank for dry ice, a feeding structure, a heating component, a pressure monitoring component, a control module, and a pressure relief safety valve. While this type of structure focuses on dry ice gas production and tank pressure control, it still requires corresponding structures for separating and transferring materials, as well as for the venting handover when the used carrier unit is removed.

[0005] CN120367558A discloses a wellhead injection device for capsule dry ice. Its storage chamber is connected to the wellhead via a channel with a valve and a flange. A pressure gauge is installed on the sealing cover, and the valve can be controlled based on the pressure gauge signal. A pressure relief valve communicating with the storage chamber is installed on the housing. A guide structure in the channel guides the capsule dry ice into the wellhead. This device delivers capsule dry ice into the wellbore liquid. This invention addresses the refueling process where, after the carrier unit isolates the gas production within the device, it still carries residual solid carbon dioxide out of the gas production chamber, and includes a ventilation and interlocking structure.

[0006] The problems addressed by this invention are: unused solid carbon dioxide needs to be discharged as sublimation gas, while the working unit needs to be isolated from gas generation; used units may still generate gas after depressurization, and new closed accumulation spaces should not be formed due to passage handover during their removal; the material replacement exhaust port may be blocked by frost or dry ice adhesion, and the passage cannot be considered open solely based on the instantaneous low pressure in the cavity; at the same time, the low pressure of the shared output pipeline should not be mistaken for the absence of dangerous residual pressure in the cavity to be opened. Summary of the Invention

[0007] To this end, a storage section with a storage and venting passage, a gas generation section with a pressurized gas generation chamber and a gas supply outlet, a transfer and isolation mechanism, and a material replacement interlock mechanism are provided. The transfer and isolation mechanism sends the selected carrier unit into the pressurized gas generation chamber and isolates the storage space, while unselected carrier units are still ventilated through the storage and venting passage. The material replacement interlock mechanism keeps the material replacement opening locked until the material replacement venting is connected and the internal pressure condition is met.

[0008] The material replacement interlock mechanism works in conjunction with the transfer component to maintain a residual gas exhaust path during the process of moving the used bearing unit from the pressurized gas-generating chamber to the ventilated receiving position. The term "continuously connected" means that the exhaust path is not completely closed due to mechanism switching within this transfer interval; it does not mean that the internal pressure of the gas-generating chamber is directly released to the operator's space, nor does it imply that exhaust capacity does not need to be calculated.

[0009] One specific implementation employs a switching element with sequential stroke, a cam or limiting groove, and a pressure response element that directly senses the pressure of the gas production chamber. The switching element first opens the material replacement exhaust, and the pressure response element blocks the unlocking stroke when the opening conditions are not met; after unlocking is allowed, the exhaust groove along the transfer stroke sequentially connects the chamber-side exhaust port and the receiving-side exhaust port through the overlapping connecting area.

[0010] Optionally, the material changing interlock mechanism separates the thermally conductive contacts before unlocking to reduce controlled heat input. Optionally, an internal pressure detection device, controller, and air supply isolation device are provided. Under the condition of isolating the working air supply and keeping the material changing opening locked, a conduction self-check is performed based on the pressure response after the material changing exhaust is connected. The initial pressure must have a identifiable pressure drop margin. Additional unlocking permission is only given when the pressure drop, termination pressure, and subsequent recovery all meet preset conditions. The self-check results cannot directly distinguish the specific cause of frost, adhesion, leakage, or detection abnormalities, nor do they replace continuous discharge and independent mechanical depressurization.

[0011] Optionally, two independent gas-generating chambers can be used to form a gas supply relay. A shared output buffer volume is used, and the backup branch only enters the depressurization process of the material-to-be-replaced chamber after its actual gas supply capacity has been confirmed during the isolation of the branch to be replaced. The gas supply relay conditions and the opening conditions of the material-to-be-replaced chamber are determined separately.

[0012] Storage venting, working gas supply, material replacement venting, and abnormal pressure relief each serve different functions. The coordination between venting path handover and locking stroke reduces the risk of closed accumulation spaces due to path switching during the removal of the carrying unit; pressure response checks after isolated gas supply reduce the misuse of pressure drops caused by downstream gas consumption as a basis for material replacement venting. Through gas-consuming end adaptation, the same gas supply core can be used at different carbon dioxide receiving ends. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the relationship between the device's material storage, gas production, gas supply, and independent exhaust.

[0014] Figure 2 This is a schematic diagram showing the interlocking relationship of the material changing sequence and the handover relationship of the exhaust passage.

[0015] Figure 3 A schematic diagram showing the relay gas supply and branch line confirmation relationship for the dual gas production chambers.

[0016] Figure 4 This is a schematic diagram of the state transition during material changeover.

[0017] Figure 5 This is a partial schematic diagram of a linear transfer component, where A, B, and C represent the cavity-side connection, overlap connection, and receiving-side connection, respectively. Figure 6 This is a schematic diagram of the pressure response self-check relationship after gas supply is isolated.

[0018] Figure 1 The diagram shows the structural relationships using the attached figures and labels. Figure 2 , Figure 3 and Figure 6 Solid lines in the diagram represent gas or marked heat transfer pathways, while dashed lines represent detection, mechanical linkage, or control relationships. Figure 4 The arrows in the text indicate state transitions. Figure 5 The horizontal arrows indicate the direction of transfer, and the vertical arrows indicate the gas passage. Each diagram is for illustrative purposes only and does not represent a processing scale.

[0019] Reference numerals: 100—Storage section; 101—Storage exhaust passage; 110—Carrying unit; 111—Carrying unit gas passage; 120—Transfer component; 121—Isolation component; 130—Material changing interlock mechanism; 131—Locking component; 132—Switching component; 134—Pressure response component; 135—Cam or sequential limiting groove; 136—Moving exhaust groove; 137—Cavity-side exhaust port; 138—Receiving position-side exhaust port; 139—Overlapping connecting area; 140—Gas production section; 141— 142—Pressurized gas production chamber; 150—Gas supply outlet and regulating section; 151—Gas input interface; 160—Ventilation receiving position; 161—Receiving position exhaust passage; 170—Independent mechanical pressure relief passage; 179—Discharge interface; 180—Separable heat-conducting component; 181—Heating side contact element; 182—Heat-conducting receiver; 190—Controller; 191—Cavity pressure detection element; 192—Position detection element; 193—Detection pressure-applying passage; 194—Gas supply isolation element.

[0020] Reference numerals in the dual-chamber implementation: 241—first pressure-bearing gas-generating chamber; 242—second pressure-bearing gas-generating chamber; 251—first gas supply branch; 252—second gas supply branch; 253—first branch gas supply detection element; 254—second branch gas supply detection element; 260—buffer volume; 261—output pressure detection element; 271—first chamber independent mechanical pressure relief passage; 272—second chamber independent mechanical pressure relief passage. Detailed Implementation

[0021] See Figure 1 Multiple support units 110 are placed within the storage section 100. These support units can be perforated containers, open supports, or trays, serving to constrain the loading position of solid carbon dioxide without bearing the overall operating pressure of the device. A gas passage 111 allows sublimated gas from the storage material to enter the storage venting passage 101. The passage 101 should maintain its venting function even when the storage cover is closed or the gas generation chamber is isolated; ordinary sealed packaging should not be equated with the vented support unit of this embodiment.

[0022] The transfer component 120 can be a linearly advancing bracket or a rotary positioning carrier. The isolation component 121 is a closure that mates with the cavity opening, used to separate the storage space after the carrier unit enters the pressure-bearing gas-generating chamber 141. The gas-generating chamber and the closure component form the pressure-bearing outer boundary, and the shape and single loading capacity of the carrier unit can be varied.

[0023] The gas supply outlet and regulating section 150 are connected to the gas consumption interface 151. Water-based aeration is one type of gas consumption, but the refueling interlock of the device does not depend on the presence of water; it can also be connected to a gas receiving container with compatibility and pressure adaptability. Solid isolation, pressure regulation, and backflow prevention components are installed in the gas supply path according to the application. Food contact, gas purity, and liquid backflow prevention must be evaluated separately; the universality of the output interface does not presume compliance with industry requirements.

[0024] The gas generation chamber 141 is connected to the discharge port 179 via an independent mechanical pressure relief passage 170. Its inlet directly senses the pressure within the chamber and is not located downstream of the filter or regulating components at the working outlet, nor is it connected via a refill exhaust valve. Its operation is independent of controller power supply. The refill exhaust passage 142 is used for routine pressure reduction and cannot replace the abnormal pressure relief passage 170. The discharge port 179 indicates an assessed external exhaust connection and does not imply direct exhaust into enclosed rooms or to people's faces. Each exhaust passage can be used independently; if they converge into a common exhaust system, back pressure should be calculated to avoid simultaneous failure of multiple passages due to a single blockage.

[0025] See Figure 2The locking element 131 constrains the closure of the material exchange opening. The switching element 132 is connected to the cam or the sequential limiting groove 135. Its first movement connects the material exchange exhaust passage 142, and subsequent movements have the mechanical stroke to release the locking element. The pressure response element 134 is directly connected to the gas generation chamber 141 via an independent pressure inlet. It can use a diaphragm or piston to drive the blocking pin. When the pressure inside the chamber is higher than the opening threshold determined according to the structural safety conditions, the blocking pin occupies the channel of the subsequent stroke, preventing unlocking.

[0026] The pressure-sensing position of pressure response element 134 is directly connected to the cavity to be opened, rather than simply reading the pressure downstream of the voltage regulator or the buffer volume. In the embodiment employing electronic detection, the cavity pressure detection element 191 detects the pressure of the cavity to be opened via the detection pressure-sensing path 193; the controller 190 checks the consistency between the pressure signal and the state of the pressure response element, and does not output unlocking permission if the detection is invalid, the signals are contradictory, or the position is not confirmed. The mechanical pressure barrier and the electronic permission constitute a series condition, and the electronic permission cannot forcibly overcome the mechanical barrier.

[0027] See Figure 5 The movable exhaust trough 136 is disposed on the transfer member 120 and extends along its restricted movement trajectory. The exhaust trough receives residual sublimated gas through the gas channel 111 of the carrying unit. The cavity-side exhaust port 137 on the fixed guide is connected to the material replacement exhaust passage 142, and the receiving-position-side exhaust port 138 is connected to the receiving-position exhaust passage 161. When the transfer member moves from the cavity side to the receiving-position side, the exhaust trough first communicates with the cavity-side exhaust port, then simultaneously covers both exhaust ports, and then maintains communication with the receiving-position-side exhaust port while disengaging from the cavity-side exhaust port; the stroke interval corresponding to the simultaneous coverage is the overlapping communication area 139.

[0028] In the implementation of the linear bracket, the effective interval between the two exhaust ports along the direction of movement is less than the effective length that the movable exhaust groove can bridging, and a covering allowance is left at the end of the groove so that the next exhaust port is connected before the previous exhaust port has disengaged. The guide structure and cam or sequential limiting groove restrict the movement of the bracket so that it cannot bypass the overlapping connection area 139; a sealing area is set in the working position to prevent the gas generation chamber from being pressurized into the storage space, and the material changing stroke will not be blocked by the seals at the same time. After the transfer component enters the receiving position, the gas passage of the bearing unit continues to connect to the exhaust passage of the receiving position. The rotating bearing plate adopts a corresponding arc-shaped groove and an exhaust port with an overlapping angle area. The groove length, cross-sectional area and covering allowance are determined according to the stroke, tolerance, residual gas generation and frosting conditions.

[0029] See Figure 6The pressure tapping passage 193 is a pressure tapping connection from the pressurized gas production chamber 141 to the pressure detection element 191 within the chamber, and is not used as an alternative exhaust port bypassing the material replacement exhaust passage 142. The gas supply isolation element 194 is located in the working gas supply path of the gas supply outlet 150. At the start of the self-test, the material replacement opening is kept locked, the isolation element 121 is closed, and the gas supply isolation element 194 is closed, and the permission for controlled increase in heat input is revoked; the initial pressure before the material replacement exhaust is connected is collected, and then the material replacement exhaust passage 142 is connected to collect the pressure change during the predetermined self-test period. The independent mechanical pressure relief passage 170 maintains its self-protection function during the self-test and is not isolated in order to obtain a pressure response.

[0030] Preset discriminatory conditions include an initial pressure margin sufficient to distinguish the preset drop amount, and the pressure sensor being within its effective range. The preset drop amount should be greater than the change caused by measurement resolution and uncertainty, and should be selected within the allowable operating range. The controller compares the pressure difference between the self-test start point and the predetermined time period end point, the end point pressure, and the maximum pressure rise during the subsequent observation period: additional unlocking permission is granted only when the pressure difference reaches the drop amount threshold, the pressure at the end point and during the observation period both meet the opening conditions, and the rise does not exceed the limit. The self-test threshold and observation period are set based on the cavity volume, flow resistance, and remaining gas production operating range.

[0031] If the initial pressure is too low and there is insufficient margin for judgment, the self-test conclusion is "cannot be confirmed." A blockage is not assumed simply because a pressure drop is not observed, nor is a momentary low pressure considered proof of continuity. If the detection is ineffective or the response does not meet the criteria, the system remains locked and enters a shutdown maintenance state. Independent pressure relief, additional sealing of residual dry ice, or pressurization should not be performed to obtain a self-test pressure differential. External leakage, residual sublimation, temperature changes, pressure port blockage, and sensor malfunctions during self-testing can all affect the pressure response; a pressure response self-test cannot prove that all faults have been eliminated.

[0032] After the self-test passes, the material replacement exhaust passage 142 remains open, and corresponding internal pressure and position checks are performed before and during removal. Unlocking or stopping the transfer is prohibited if abnormalities are detected or the pressure rises. The purpose of isolating from the downstream is to suppress interference from normal gas supply consumption on the self-test, and it cannot replace assembly sealing checks, pressure tapping passage status checks, and overlapping guide structures during the removal process.

[0033] Before the transfer begins, the pressure must be reduced to the permissible opening condition; overlapping connection areas are not permitted for pressurized opening. After the carrying unit enters the ventilation receiving position 160, its gas passage 111 continues to be discharged through the receiving position exhaust passage 161. If the receiving position connection is not confirmed or a blockage is found, the unit still containing dry ice must not be sealed in a normal collection box, nor should manually forcibly releasing the lock be treated as a normal fault recovery.

[0034] Storage venting passage 101 handles inactive units, receiving venting passage 161 handles residual units that have been removed, material replacement venting passage 142 handles routine pressure reduction in the working chamber, and independent mechanical pressure relief passage 170 handles abnormal pressure. The distinction between these four functions prevents the storage vent, material replacement vent, and abnormal pressure relief port from being simply connected in series into a single passage that could be closed by the working valve.

[0035] The separable heat-conducting assembly 180 includes a heat-supplying contact 181 and a heat-conducting acceptor 182 thermally coupled to the gas-generating chamber. The heat supply can originate from an ambient heat exchange component or a controlled heating component; the presence of a separate electric heater is not required at all times. Heat supply contact increases heat transfer to the gas-generating section upon establishment and increases the thermal resistance of the controlled heat path upon separation. A cam or sequential stop groove 135 may be provided with a retraction section to move the contact 181 away from the heat-conducting acceptor 182 before the release of the locking element 131 during the refueling operation. This action is associated with the exhaust sequence but must not close the passage 142. Even after separation, air heat exchange, radiation, and residual heat from solid components remain; separation or power failure cannot be used as proof that gas generation has ceased.

[0036] In embodiments with controlled heat input, the closed state of the isolator 121 and the cavity is confirmed by the position detection device 192. The controller 190 only allows increased heat input if both are closed and the detection is valid; this permission is revoked if gas supply is stopped or if abnormal pressure, temperature, or position feedback is detected. Revocation of increased heat input does not indicate termination of residual gas production. Pressure boundaries, cryogenic sealing, pressure relief discharge rate, and discharge conditions are determined according to specific load and operating conditions.

[0037] The transfer member 120 and the isolator 121 may adhere in a dry ice environment. In one embodiment, the switching member 132 drives the transfer member to perform a limited short return or scraping stroke before entering the unlocking stroke to break the dry ice bridging on the contact surface. This short return does not exceed the limit of the overlapping connection area 139, nor does it release the locking member 131. This action is an additional stroke of the material change interlock and cannot replace the exhaust handover and conduction self-test.

[0038] See Figure 3 The first pressurized gas-generating chamber 241 and the second pressurized gas-generating chamber 242 respectively have the aforementioned isolation, material replacement interlock, and guide structure. Gas supply branches 251 and 252 each have isolation components and backflow prevention components, merging into a common gas supply pipeline connected to the buffer volume 260, and then connecting to the gas consumption interface 151 via the gas supply outlet and regulating section 150. Independent mechanical pressure relief passages 271 and 272 are directly connected to their respective chambers and are not located downstream of the branch isolation components.

[0039] When the first chamber needs to be refilled, the second chamber should first be put into a gas-supply state, and then the first gas supply branch 251 should be isolated. In this isolated state, the second branch gas supply detection device 254 detects the actual gas flow from the second chamber to the common pipeline, and the output pressure detection device 261 detects whether the output meets the requirements. The second chamber should not be deemed to have successfully taken over the gas supply solely based on the existing pressure in the buffer volume 260.

[0040] After the backup branch's air supply and output pressure are confirmed, the first chamber can then enter for material replacement and exhaust. Its opening must also independently meet the conditions of its pressure response mechanism, continuity self-test, and locking mechanism. If the backup branch confirmation fails, the chamber remains closed, and air supply is maintained or stopped based on the still available supply capacity; the opening interlock is not bypassed to maintain downstream flow. Material replacement in the second chamber follows the opposite corresponding operation.

[0041] The relay gas supply is maintained only when the standby gas production capacity, buffer capacity, load flow rate, and material replacement time are within the verified range; it does not imply continuous gas supply for unlimited time or at any flow rate. The buffer volume itself is a pressure-bearing component that needs to be evaluated, and its protection cannot rely on the pressure relief components of the isolated gas production chamber; specific implementations should include matching buffers and downstream pressure protection. The dual-chamber parallel connection and buffer itself are usable gas supply architectures. The focus of this paper is to connect the actual gas supply confirmation of the standby branch with the residual solid material replacement process, and to separate the judgment of output continuity from the judgment of residual pressure and exhaust conduction of the chamber to be opened.

[0042] See Figure 4 The basic material replacement sequence includes: ventilating the storage unit, transferring and isolating the carrying unit, closing the gas supply, requesting material replacement and canceling controlled heating, connecting the material replacement exhaust, checking the internal pressure conditions, maintaining ventilation as the unit moves out, and continuing to guide exhaust from the receiving position. (Using...) Figure 6 During the additional self-test shown, initial pressure should be collected before starting the material replacement and venting process, and the gas supply outlet should be isolated. The pressure response check and the internal pressure condition check jointly determine whether to grant unlocking permission. If either condition is not met, the locked and applicable guide exhaust states will remain. Dual-chamber gas supply relay is an optional upstream process and does not change the opening conditions of the chamber to be opened.

[0043] The gas supply flow rate and material replacement time in the above embodiments are determined based on the gas production capacity, discharge capacity, buffer volume, and load. Independent pressure relief, cryogenic sealing, and interlocking structures should be matched with pressure-bearing components. Fault conditions include frosting, blockage, power failure, backflow, pressure recovery, and branch switching failure; the opening interlock should not be bypassed under the pretext of maintaining gas supply.

[0044] This device uses solid carbon dioxide as the gas supply medium and is suitable for gas-using terminals compatible with this medium and pressure conditions; food contact, gas purity, and site ventilation shall meet the corresponding application conditions separately. The discharge facilities at the storage and receiving positions shall not discharge into confined personnel spaces, and this device shall not be used directly as an oxygen or breathing gas supply equipment.

Claims

1. A carbon dioxide supply device, characterized in that, include: The storage section has a storage space for accommodating multiple solid carbon dioxide carrying units and a storage exhaust passage communicating with the storage space. The gas generating section has a pressure-bearing gas generating chamber that receives the bearing unit and a gas supply outlet that communicates with the pressure-bearing gas generating chamber; A transfer isolation mechanism includes a transfer member for transferring a carrier unit between the storage section and the pressurized gas-generating chamber, and an isolation member separating the pressurized gas-generating chamber from the storage space, wherein the storage exhaust passage remains in communication with the carrier unit remaining in the storage space when the isolation member separates the two; and a material replacement interlock mechanism, cooperating with the transfer isolation mechanism and the material replacement exhaust passage of the pressurized gas-generating chamber, having a locking member that prevents the material replacement opening of the pressurized gas-generating chamber from opening; the material replacement interlock mechanism is configured to keep the locking member locked until the material replacement exhaust passage is opened and the pressure in the pressurized gas-generating chamber meets a preset opening condition, and to keep the residual carbon dioxide exhaust path of the carrier unit continuously open during the process of allowing the carrier unit to move out through the material replacement opening until the carrier unit enters a receiving position communicating with an external emission path.

2. The carbon dioxide supply device according to claim 1, characterized in that, The pressure-bearing gas-generating chamber is also directly connected to an independent mechanical pressure relief passage. This independent mechanical pressure relief passage does not pass through the regulating component or solid isolation component on the gas supply outlet, nor is it contingent upon the opening of the material replacement exhaust passage. The pressure-response pressure relief component on the independent mechanical pressure relief passage can operate even without power supply.

3. The carbon dioxide supply device according to claim 1, characterized in that, The material replacement interlocking mechanism includes a switching element and a cam or sequential limiting groove connected to the switching element. The switching element has a first stroke that connects the material replacement exhaust passage first and a subsequent stroke that allows the locking element to release. A pressure response element that is directly connected to the pressure-bearing gas production chamber blocks the subsequent stroke when the pressure does not meet the preset opening condition.

4. The carbon dioxide supply device according to claim 3, characterized in that, The transfer member has an exhaust groove extending along the transfer stroke. The exhaust groove forms an overlapping communication area with the exhaust port on the pressure-bearing gas production chamber side and the exhaust port on the receiving position side, so that the carrying unit communicates with at least one of the exhaust ports when it moves between the two exhaust ports. The cam or sequential limiting groove restricts the stroke of the transfer member so that the transfer member cannot release the carrying unit when both exhaust ports are closed.

5. The carbon dioxide supply device according to claim 1, characterized in that, The supporting unit is a container, support or tray with a gas channel, the gas channel being connected to the storage exhaust passage in the storage space and to the gas supply outlet in the pressure-bearing gas generation chamber; The pressure-bearing outer boundary is formed by the cavity and closure of the gas-generating part, and is not formed solely by the shell of the bearing unit.

6. The carbon dioxide supply device according to claim 3, characterized in that, The gas-generating section has a separable heat-conducting assembly. The cam or sequential limiting groove is connected to the separable heat-conducting assembly, so that the switching member separates the heating-side contact member from the heat-conducting receptor of the pressurized gas-generating chamber before the locking member is allowed to release. The separation does not close the material replacement exhaust passage. The gas-generating section also has a controlled heat input assembly. The controlled heat input assembly is only allowed to increase heat input after the isolator separates the material storage space and the closed state of the pressurized gas-generating chamber is confirmed. The permission to increase heat input is revoked when the gas supply is stopped or an abnormality is reported.

7. The carbon dioxide supply device according to claim 2, characterized in that, The gas-generating section has a first pressurized gas-generating chamber and a second pressurized gas-generating chamber that can be isolated from the storage section. Each of the two chambers is connected to a common gas supply pipeline via a gas supply branch with an isolation component and an anti-backflow component. Each pressurized gas-generating chamber has the material replacement interlocking mechanism and its own independent mechanical pressure relief passage. The common gas supply pipeline is connected to a buffer volume and an output pressure detection component. The gas supply branch of the spare pressurized gas-generating chamber is equipped with a branch gas supply detection component. During gas supply switching, a controller isolates the gas supply branch of the pressure-bearing gas-generating chamber to be replaced. In this isolated state, the controller confirms that there is gas flowing from the standby pressure-bearing gas-generating chamber to the common gas supply pipeline based on the branch gas supply detection device, and only after confirming that the output pressure meets the preset requirements based on the output pressure detection device, is the pressure-bearing gas-generating chamber to be replaced allowed to enter the material replacement and exhaust state. When the backup gas supply fails to be confirmed, the pressurized gas-producing chamber to be replaced is prohibited from entering the open chamber replacement state. The pressure from the common gas supply pipeline is not used as a criterion for the pressurized gas-producing chamber to be replaced to meet the preset opening conditions.

8. The carbon dioxide supply device according to claim 1, characterized in that, The material replacement interlock mechanism also includes an internal pressure detection device, a controller, and an air supply isolation device located at the air supply outlet; the internal pressure detection device detects the internal pressure via a detection pressure tapping passage that is directly connected to the pressure-bearing gas production chamber; The controller connects the material replacement exhaust passage and collects the change in cavity pressure within a predetermined time period when the material replacement opening is locked, the air supply outlet is isolated by the air supply isolator, and the initial cavity pressure meets the preset discriminable condition; the locking device is only allowed to be released when the pressure drop reaches the preset drop threshold, the cavity pressure continues to meet the preset opening condition during the subsequent observation period of maintaining exhaust and no pressure rise exceeds the preset rise limit. If the initial pressure does not meet the discriminative condition, the detection is invalid, or any of the above conditions are not met, the locking element remains locked.

9. A refueling control method using solid carbon dioxide for gas supply, characterized in that, include: Multiple solid carbon dioxide carrier units within the storage space are connected to the storage exhaust passage. One of the carrier units is then transferred into the pressurized gas-generating chamber, which is then separated from the storage space. The carrier units remaining in the storage space continue to be connected to the storage exhaust passage. Gas generated from the sublimation of solid carbon dioxide entering the pressurized gas-generating chamber is output through the gas supply outlet. During material replacement, the material replacement exhaust passage of the pressurized gas-generating chamber is first opened, and the material replacement opening is locked until the pressure within the pressurized gas-generating chamber meets the preset opening conditions. After the carrier unit is allowed to move out, its residual carbon dioxide exhaust path remains open during the removal process until the carrier unit enters the receiving position connected to the external exhaust path.

10. The method according to claim 9, characterized in that, The locking release stroke is blocked by a pressure response element that is directly connected to the pressure-bearing gas-generating chamber. The exhaust path is connected between the pressure-bearing gas-generating chamber side and the receiving position side by a movable exhaust channel with an overlapping communication area. The heating contact of the separable heat-conducting component is disconnected before the locking release stroke. Before locking release, the gas supply outlet is isolated. When the initial cavity pressure meets the preset discriminable condition, the material replacement exhaust passage is connected and the cavity pressure change is collected. Locking release is allowed only when the pressure drop within a predetermined time period reaches the preset drop threshold, the cavity pressure meets the preset opening condition, and no pressure rise exceeding the preset rise limit occurs during the subsequent observation period of maintaining exhaust. The lockout remains in effect if the initial pressure does not meet the discriminative conditions, the detection is invalid, or any of the above conditions are not met.

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