Electric sparkling water machine

Abstract

The utility model discloses an electric sparkling water machine which comprises a water bottle and a gas bottle, and gas in the gas bottle can be injected into the water bottle and dissolved in liquid in the water bottle to form sparkling water. The electric sparkling water machine comprises an air injection assembly which comprises an air injection pipeline and an ejector pin valve; the driving assembly comprises a motor and a pressing rod; the pressure relief assembly comprises a pressure relief pipeline and a pressure relief valve; under the state that the pressing rod abuts against the ejector pin valve to enable the gas cylinder to be communicated with the gas injection pipeline so as to inject gas into the water cylinder, the pressing rod acts on the pressure relief valve at the same time so as to close the pressure relief pipeline; under the state that the ejector pin valve is released to turn off the gas injection pipeline, the pressure rod can control the pressure relief valve to be communicated with the pressure relief pipeline to exhaust gas and relieve pressure; and the safety assembly comprises a safety valve, a whistle blowing pipeline and a whistle valve. When gas is injected into the water bottle to enable the pressure of the water bottle to reach the opening value of the whistle valve, part of gas in the water bottle flows through the whistle valve through the whistle blowing pipeline to give out whistle sound for reminding. The sparkling water machine provided by the utility model can provide safety and reliability in the use process.

Description

Technical Field

[0001] This utility model relates to the technical field of drinking water equipment, and in particular to an electric sparkling water machine. Background Technology

[0002] Sparkling water machines, which combine ordinary liquids with gas (usually carbon dioxide) to create carbonated beverages, have become widely used in homes and businesses in recent years. Traditional sparkling water machine designs primarily rely on pressure switches to control the aeration process. Specifically, a motor controls the opening of a gas cylinder to pump gas into the liquid. When the pressure reaches a preset value, the pressure switch is triggered to stop the motor, preventing over-inflation and potential safety hazards.

[0003] However, the pressure switch-based inflation control method in existing technologies poses safety hazards. Specifically, during long-term use, the pressure switch may experience mechanical failures (such as jamming or wear) or electronic board malfunctions (such as short circuits or component aging), which could prevent the inflation process from terminating normally according to the preset logic. In this situation, the pressure inside the water bottle may continue to rise until it exceeds its tolerance limit, leading to serious safety hazards such as bottle rupture or even explosion, threatening the personal safety and property of users.

[0004] Therefore, it is necessary to propose a technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model proposes an electric sparkling water machine that can effectively prevent overpressure and issue a reminder to ensure safety and reliability during use.

[0006] This utility model is achieved through the following technical solution: an electric sparkling water machine, comprising a water bottle for holding liquid and a gas bottle for holding gas, wherein the gas in the gas bottle can be injected into the water bottle and dissolved in the liquid in the water bottle to form sparkling water, the sparkling water machine comprising:

[0007] The gas injection assembly includes a gas injection line connected between the gas cylinder and the water bottle, and a needle valve for controlling the connection or disconnection between the gas cylinder and the gas injection line.

[0008] The drive assembly includes a motor and a lever driven by the motor to press against or release the pin valve;

[0009] The pressure relief assembly includes a pressure relief line connected to the water bottle and a pressure relief valve for controlling the connection or disconnection of the pressure relief line; wherein, when the pressure rod presses against the needle valve to connect the gas cylinder to the gas injection line for injecting gas into the water bottle, the pressure rod simultaneously acts on the pressure relief valve to shut off the pressure relief line; when the needle valve is released to shut off the gas injection line, the pressure rod can control the pressure relief valve to connect the pressure relief line for venting and pressure relief.

[0010] The safety component includes a whistle tube and a safety valve connected to the water bottle, and a whistle valve connected to the end of the whistle tube. Both the whistle valve and the safety valve are opened by the pressure inside the water bottle, and the opening pressure of the whistle valve is less than the opening pressure of the safety valve. When gas is injected into the water bottle to a pressure that reaches the opening pressure of the whistle valve, some of the gas inside the water bottle flows out through the whistle tube and the whistle valve to emit a whistle warning.

[0011] As a further improved technical solution, the sparkling water machine includes a mounting base, and the pressure rod includes an upper pressure rod and a lower pressure rod, with one end of the upper pressure rod and one end of the lower pressure rod respectively pivotally connected to opposite ends of the mounting base.

[0012] As a further improved technical solution, the output end of the motor is connected to a crank or cam, and the other end of the upper pressure rod is provided with a sliding groove that movably cooperates with the crank or cam.

[0013] As a further improved technical solution, the upper pressure rod includes a first crossbeam pivotally connected to the mounting base, a second crossbeam connected to the crank or cam, and a longitudinal beam longitudinally connected between the first and second crossbeams.

[0014] As a further improved technical solution, the first crossbeam is bent and protrudes towards the lower pressure rod, and the bottom surface of the first crossbeam is provided with a protrusion that contacts the lower pressure rod.

[0015] As a further improved technical solution, a filter screen is provided at the end of the air injection pipeline connected to the needle valve.

[0016] As a further improved technical solution, the upper pressure rod includes a pressure relief protrusion extending outward from the connection between the first crossbeam and the longitudinal beam, and the pressure relief protrusion is pressed against the pressure relief valve.

[0017] As a further improved technical solution, the sparkling water machine also includes a manual button and a manual operating component, which includes a manual button or a manual knob. The manual button or manual knob is associated with the pressure rod to drive the pressure rod to move.

[0018] As a further improved technical solution, the sparkling water machine includes a head base and a head cover, with the head cover and head base forming an installation cavity. The air injection component, drive component, pressure relief component and safety component are all located within the installation cavity. The pressure relief port of the pressure relief component and the exhaust port of the whistle valve both extend to the bottom of the head base to discharge gas outside the installation cavity.

[0019] As a further improved technical solution, the machine head cover is provided with an operation panel, which displays buttons that allow the user to select and trigger multiple gas injection levels. When different gas injection levels are triggered, the duration for which the drive component drives the pin valve to open the gas cylinder and the gas injection pipeline varies.

[0020] The electric sparkling water machine provided by this utility model includes an air injection component, a drive component, a pressure relief component, and a safety component. These components work together to achieve normal air injection and pressure relief. A whistle is emitted through a whistle valve to remind users of the air injection pressure, effectively preventing overpressure accidents. Furthermore, in the event of a malfunction in air injection or pressure relief or other abnormal conditions, the sparkling water machine of this utility model can safely release pressure through a safety valve, greatly improving the safety of use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional composite diagram of Embodiment 1 of the electric sparkling water machine of this utility model.

[0022] Figure 2 This is a three-dimensional assembly diagram of the machine head of the electric sparkling water machine according to Embodiment 1 of this utility model.

[0023] Figure 3 This is a three-dimensional exploded view of the machine head of the electric sparkling water machine according to Embodiment 1 of this utility model.

[0024] Figure 4 This is a three-dimensional exploded view of the inside of the machine head of the electric sparkling water machine according to Embodiment 1 of this utility model.

[0025] Figure 5 This is a three-dimensional view of the inside of the machine head of the electric sparkling water machine according to Embodiment 1 of this utility model.

[0026] Figure 6 This is a side view of the inside of the machine head of the electric sparkling water machine according to Embodiment 1 of this utility model.

[0027] Figure 7 This is a cross-sectional view of the internal components of the machine head in Embodiment 1 of the electric sparkling water machine of this utility model.

[0028] Figure 8 This is another cross-sectional view of the internal components of the machine head of the electric sparkling water machine according to Embodiment 1 of this utility model.

[0029] Figure 9 This is a three-dimensional assembly diagram of the machine head of the electric sparkling water machine according to Embodiment 2 of this utility model.

[0030] Figure 10 This is a three-dimensional exploded view of the machine head of the electric sparkling water machine according to Embodiment 2 of this utility model.

[0031] The attached diagram is labeled as follows: 100-Water bottle; 200-Gas cylinder; 10-Head unit; 101-Water bottle connection port; 102-Gas cylinder connection port; 11-Head unit base; 12-Head unit cover; 13-Operation panel; 14-Manual button; 15-Circuit board; 16-Mounting base; 2-Injection assembly; 21-Pin valve; 22-Injection pipeline; 221-Filter screen; 3-Drive assembly; 31-Motor; 311 - Crank; 32- Upper pressure rod; 321- First crossbeam; 3211- Protrusion; 322- Second crossbeam; 3220- Sliding groove; 323- Longitudinal beam; 324- Pressure relief protrusion; 33- Lower pressure rod; 4- Pressure relief assembly; 401- Pressure relief port; 41- Pressure relief valve; 42- Pressure relief pipeline; 5- Safety assembly; 51- Whistle valve; 511- Whistle outlet; 52- Whistle blowing pipeline; 53- Safety valve. Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example 1

[0034] Please see Figures 1 to 8As shown, one embodiment of this utility model discloses an electric sparkling water machine, which includes a water bottle 100 for holding liquid and a gas cylinder 200 for holding gas. The gas in the gas cylinder 200 can be injected into the water bottle 100 and dissolved in the liquid in the water bottle 100 to form sparkling water. In some embodiments, the gas contained in the gas cylinder 200 is carbon dioxide gas; in other embodiments, it may be other gases that can be added to water to make sparkling water. The sparkling water machine includes an injection component 2, a drive component 3, a pressure relief component 4, and a safety component 5. The components work together to achieve normal injection and pressure relief, and a whistle is emitted by a whistle valve 51 to remind users of the injection pressure. Furthermore, in the event of a malfunction in injection or other abnormal conditions, the sparkling water machine of this utility model can safely relieve pressure through the safety component 5, effectively preventing overpressure accidents and greatly improving safety.

[0035] The following is a detailed description of each part with reference to the accompanying drawings and embodiments.

[0036] Please refer to Figures 1 to 3 As shown, in one embodiment, the electric sparkling water machine includes a headstock 11 and a head cover 12, with the head cover 12 and the headstock 11 forming an installation cavity. The air injection component 2, drive component 3, pressure relief component 4, and safety component 5 are all disposed within the installation cavity. This structural design integrates the various components, facilitating installation and maintenance, while also protecting the components from external environmental influences. An operation panel 13 is provided on the head cover 12, and a circuit board 15 is mounted below the operation panel 13. The operation panel 13 displays buttons that allow the user to select and trigger multiple air injection levels. When different air injection levels are triggered, the drive component 3 drives the needle valve 21 to open the connection between the gas cylinder 200 and the air injection pipeline 22 for different durations. For example, the control panel 13 displays three refill levels: low, medium, and high. When the user selects the low refill level, the refill time is shorter, and less gas is injected from the gas cylinder 200 into the water bottle 100. When the user selects the high refill level, the refill time is longer, and more gas is injected from the gas cylinder 200 into the water bottle 100, thus producing sparkling water with different flavors. The control panel 13 provides users with more personalized refill options, meeting the needs of different users. The control panel 13 can be a touch panel or a mechanical button panel. In addition to the refill levels, the control panel 13 can also be equipped with other function keys, such as a child lock button to prevent accidental operation by children. Please refer to... Figure 2 As shown, a water bottle connection port 101 and a gas cylinder connection port 102 are provided on the bottom surface of the machine head base 11. In this embodiment, both the water bottle connection port 101 and the gas cylinder connection port 102 are threaded connections. Correspondingly, the mouths of the water bottle 100 and the gas cylinder 200 are provided with external threads, which are tightened to the water bottle connection port 101 and the gas cylinder connection port 102 through thread engagement.

[0037] Please refer to Figures 3 to 5 As shown, the gas injection assembly 2 is a collection of components in the sparkling water machine that enables gas injection. It includes a gas injection line 22 connecting the gas cylinder 200 and the water bottle 100, and a needle valve 21 that controls the connection or disconnection between the gas cylinder 200 and the gas injection line 22. One end of the gas injection line 22 is connected to the outlet of the gas cylinder 200, and the other end is connected to the inlet of the water bottle 100, providing a channel for gas to flow from the gas cylinder 200 to the water bottle 100. The needle valve 21 is located at the outlet of the gas cylinder 200 to open and close the outlet of the gas cylinder 200. When not subjected to external force, the ejector valve 21 is in a sealed position due to the push of its own elastic element, thus sealing the outlet of the gas cylinder 200. When subjected to an external force sufficient to overcome the elastic force provided by the elastic element, the ejector valve 21 is opened, allowing gas in the gas cylinder 200 to be injected into the water bottle 100 through the gas injection line 22. When the external force is removed, the ejector valve 21 automatically closes under the elastic force of the elastic element, cutting off the passage between the gas cylinder 200 and the gas injection line 22, stopping gas injection. Please refer to... Figure 7 As shown, a filter screen 221 is also provided at one end of the gas injection line 22 connected to the needle valve 21. The filter screen 221 can filter impurities in the gas and play a role in filtering and purifying the gas introduced into the water bottle 100.

[0038] Please refer to Figures 4 to 6 As shown, the drive assembly 3 is used to drive the opening and closing of the ejector valve 21. It includes a motor 31 and a pressure rod driven by the motor 31 to press or release the ejector valve 21. The motor 31 serves as a power source. In this embodiment, the output end of the motor 31 is connected to a crank 311. In other embodiments, the output end of the motor 31 can also be connected to a cam. In this embodiment, the crank 311 driving the pressure rod is used as an example. The pressure rod includes an upper pressure rod 32 and a lower pressure rod 33. One end of the upper pressure rod 32 and one end of the lower pressure rod 33 are pivotally connected to opposite ends of the mounting base 16, respectively. The mounting base 16 provides a mounting foundation for the pressure rod. The upper pressure rod 32 and the lower pressure rod 33 are pivotally connected to opposite ends of the mounting base 16, allowing the pressure rod to rotate around the pivot point, thereby realizing the operation of pressing or releasing the ejector valve 21 and the pressure relief valve 41. The mounting base 16 can be an integral part of the machine head base 11 or a part assembled and fixed on the machine head base 11. The upper pressure rod 32 includes a first crossbeam 321 pivotally connected to the mounting base 16, a second crossbeam 322 connected to the crank 311, and a longitudinal beam 323 longitudinally connected between the first crossbeam 321 and the second crossbeam 322. The second crossbeam 322 is provided with a sliding groove 3220 that movably engages with the crank 311. When the motor 31 rotates, the end of the crank 311 slides in the sliding groove 3220, thereby driving the upper pressure rod 32 to rotate around its pivot point with the mounting base 16.

[0039] In this embodiment, the first crossbeam 321 is bent and protrudes towards the lower pressure rod 33, and its bottom surface has a protrusion 3211 that contacts the lower pressure rod 33. Driven by the motor 31, when the upper pressure rod 32 rotates, the protrusion 3211 presses against or releases the lower pressure rod 33, thereby achieving the pressing or releasing operation of the pressure rod on the needle valve 21. When the pressure rod presses against the needle valve 21, the needle valve 21 is opened, the gas cylinder 200 is connected to the gas injection line 22, and gas injection into the water bottle 100 begins; when the pressure rod releases the needle valve 21, the needle valve 21 is closed, and gas injection stops. This embodiment uses a double pressure rod to press down on the needle valve 21, which can amplify the downward pressure through the lever principle, thereby reducing the output force of the motor 31, which is beneficial to reducing the wear and tear on the motor and extending its service life.

[0040] Please refer to Figure 4 and Figure 5 As shown, the pressure relief assembly 4 is used to release excess gas in the water bottle 100 after the gas filling is completed and before the sparkling water is to be consumed, so as to reduce the pressure and prevent the sparkling water from spraying down when the water bottle 100 is opened. The pressure relief assembly 4 includes a pressure relief line 42 connected to the water bottle 100, and a pressure relief valve 41 that controls the opening or closing of the pressure relief line 42.

[0041] One end of the pressure relief line 42 is connected to the interior of the water bottle 100, and the other end serves as a pressure relief port 401 that passes through the headstock 11 to discharge gas to the outside of the mounting cavity. A pressure relief valve 41 is installed on the pressure relief line 42 to control its connection or disconnection. When the pressure rod presses against the needle valve 21, connecting the gas cylinder 200 to the gas injection line 22 for gas injection into the water bottle 100, the pressure rod simultaneously acts on the pressure relief valve 41 to shut off the pressure relief line 42, preventing gas leakage during injection. Specifically, the upper pressure rod 32 includes a pressure relief protrusion 324 extending outward from the connection between the first crossbeam 321 and the longitudinal beam 323. The pressure relief protrusion 324 presses against the pressure relief valve 41. When the pressure rod presses against the needle valve 21, the pressure relief protrusion 324 simultaneously presses down on the pressure relief valve 41, closing the pressure relief line 42.

[0042] With the ejector valve 21 released to shut off the gas injection line 22, the pressure rod can control the pressure relief valve 41 to connect to the pressure relief line 42 for gas release and pressure relief. It should also be noted that with the ejector valve 21 released to shut off the gas injection line 22, pressure relief is not necessarily required simultaneously. In this embodiment, there may be a situation where neither gas injection nor pressure relief occurs; however, pressure relief must occur when gas injection has stopped. When pressure relief is needed, the pressure relief protrusion 324 no longer presses against the pressure relief valve 41, or the pressing force is insufficient to close the pressure relief line 42. At this time, the pressure relief valve 41 opens the pressure relief line 42 under its own elasticity, and the gas in the water bottle 100 is discharged to the outside of the mounting cavity through the pressure relief line 42, thus achieving the pressure relief function. Please refer to [further details to be added]. Figure 2As shown, in this embodiment, the pressure relief port 401 of the pressure relief assembly 4 passes through the head seat 11 to discharge gas to the outside of the mounting cavity, so as to avoid the moisture carried in the gas from having an adverse effect on the components inside the mounting cavity.

[0043] Please refer to Figures 4 to 8 As shown, safety component 5 is a safety device for the sparkling water machine. It is used to issue a whistle as a reminder when the pressure inside the water bottle 100 reaches a set value, and to safely release pressure when a malfunction causes excessive pressure. In this embodiment, safety component 5 includes a whistle pipe 52 and a safety valve 53 connected to the water bottle 100, and a whistle valve 51 connected to the end of the whistle pipe 52. Both the whistle valve 51 and the safety valve 53 are opened by the pressure inside the water bottle 100, and the opening pressure of the whistle valve 51 is less than that of the safety valve 53. The whistle valve 51 is used to release air and issue a whistle as a reminder, which serves as the first line of protection; the safety valve 53 opens when the whistle valve 51 malfunctions or the pressure continues to rise to a safety threshold, which serves as the second line of protection. Specifically, the whistle valve 51 is a special valve with a whistle opening 511. When gas flows through the whistle opening 511, the airflow causes it to emit a whistle, alerting the user that the pressure inside the water bottle 100 has reached a certain value. The opening pressure of the whistle valve 51 is often set to match the gas filling status to remind the user that filling is complete or about to be complete. For example, when an electric sparkling water machine has multiple filling levels, the opening pressure of the whistle valve 51 can be set to match the pressure of the lowest level. When the low-level filling pressure is reached, the whistle valve 51 sounds, indicating to the user that the low-level filling process is complete. Of course, during the medium and high-level filling processes, gas can continue to be filled while the whistle valve 51 is sounding, allowing the pressure inside the water bottle 100 to continue rising to the medium or high level. During this process, the whistle valve 51 will continue to sound. Therefore, the different durations of the whistle valve 51's sound can also be used to remind the user of the current filling level. In this embodiment, the whistle port 511 of the whistle valve 51 extends from the mounting cavity to below the headstock 11 to discharge gas outside the mounting cavity, preventing moisture carried in the gas from adversely affecting the components inside the mounting cavity. The safety valve 53 is a precision and reliable mechanical component, safe and reliable with a low failure rate, serving as a multiple line of defense to ensure the safety of the water bottle 100 in case of failure of other functional components. When gas is injected into the water bottle 100 until the pressure reaches the opening value of the safety valve 53, the safety valve 53 opens, achieving safe pressure relief. During normal operation of the bubble machine, the safety valve 53 remains closed and does not operate.

[0044] Please refer to Figure 1 and Figure 3As shown, in this embodiment, the sparkling water machine also includes a manual operating component, which includes a manual button 14 or a manual knob. The manual button or knob is associated with the pressure rod to drive its movement. In this embodiment, the manual operating component includes a manual button 14, located above the pressure rod, for pressing to move the pressure rod. When there is no power or the electrical components malfunction, the user can manually inject air, allowing sparkling water to be produced even without power or when the electrical components fail, thus improving the user experience. Specifically, pressing the manual button 14 moves the pressure rod downwards, thereby pressing the needle valve 21 to inject air while simultaneously closing the pressure relief valve 41; releasing the manual button 14 causes the pressure rod to move upwards under the action of its own spring return mechanism, releasing the needle valve 21 to stop air injection and opening the pressure relief valve 41 to release pressure. The manual button 14 provides users with a more convenient operating method, increasing the flexibility of using the sparkling water machine. In other embodiments, the manual operating element may also include a manual knob, which transmits force to the pressure rod via a gear set or other transmission mechanism to drive the pressure rod down for gas injection. For manual operating elements, the whistle valve 51 plays a particularly important role. Normally, in the process of electric gas injection and depressurization, the injection pressure can be maintained by a pre-programmed control of the motor 31's movement. However, for manual operating elements, users often cannot accurately control the operation time and are unaware of the injection pressure. In most cases, users will continue operating until they hear an alarm to consider the injection complete. Therefore, the whistle valve 51 plays a crucial role in reminding users when manually controlling the injection process. Example 2

[0045] Please refer to Figure 9 and Figure 10 The illustration shown is of another embodiment. Figure 9 and Figure 10 The embodiment shown is a purely electrically controlled sparkling water machine, without any manual operation components. Figure 9 and Figure 10 Other components in the illustrated embodiment can be set in the same way as in Embodiment 1, and will not be described again here.

[0046] The usage process of an embodiment of the electric sparkling water machine provided by this utility model is as follows:

[0047] Install water bottle 100 on water bottle connector 101 on the machine head, and install gas cylinder 200 on gas cylinder connector 102 on the machine head. Select the desired gas injection level via operation panel 13. Motor 31 starts and drives crank 311 to rotate according to the selected gas injection level. Crank 311 slides in sliding groove 3220, causing upper pressure rod 32 to rotate around its pivot point with mounting base 16. When upper pressure rod 32 rotates, protrusion 3211 presses against lower pressure rod 33, and lower pressure rod 33 presses against needle valve 21, opening the communication channel between gas cylinder 200 and gas injection line 22. As pressure rod moves downward, pressure is released. The protrusion 324 presses against the pressure relief valve 41, shutting off the pressure relief line 42; the gas in the gas cylinder 200 is injected into the water bottle 100 through the gas injection line 22, and as the gas is injected, the pressure in the water bottle 100 gradually increases; when the gas injection time corresponding to the selected gas injection level is reached, the motor 31 resets, causing the pressure rod to release the pin valve 21, shutting off the connection between the gas cylinder 200 and the gas injection line 22; after holding the pressure for a period of time, the motor 31 continues to work, causing the pressure relief protrusion 324 to no longer press against the pressure relief valve 41, the pressure relief valve 41 opens the pressure relief line 42, and the excess gas in the water bottle 100 is discharged, completing the sparkling water production process.

[0048] During the gas filling process, when the pressure inside the water bottle 100 reaches the opening value of the whistle valve 51, the whistle valve 51 will open, and some of the gas inside the water bottle 100 will be discharged through the whistle pipe 52. When the gas flows through the whistle valve 51, the whistle valve 51 will emit a whistle to remind the user that the pressure inside the water bottle 100 has reached the set value, so that the user can know the current gas filling status.

[0049] As explained above, compared to existing electric sparkling water machines that rely on pressure switches to control the gas injection process, this electric sparkling water machine does not use a pressure switch, reducing the probability of failure. Furthermore, the whistle valve 51 in safety component 5 provides a warning during the gas injection process, and the safety valve 53 ensures safe pressure release even if the whistle valve 51 fails due to a malfunction, greatly improving safety. The electric sparkling water machine provided by this invention has a reasonable structural design for each component, maintaining stable performance during long-term use and reducing the probability of malfunctions.

[0050] This utility model has been described through several specific embodiments. Those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or circumstances without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

Claims

1. An electric sparkling water machine, comprising a water bottle (100) for holding liquid and a gas cylinder (200) for holding gas, wherein gas in the gas cylinder (200) can be injected into the water bottle (100) and dissolved in the liquid in the water bottle (100) to form sparkling water, characterized in that, The sparkling water machine includes: The gas injection assembly (2) includes a gas injection line (22) connected between the gas cylinder (200) and the water bottle (100), and a needle valve (21) for controlling the connection or disconnection between the gas cylinder (200) and the gas injection line (22). The drive assembly (3) includes a motor (31) and a lever driven by the motor (31) to press or release the pin valve (21); The pressure relief assembly (4) includes a pressure relief line (42) connected to the water bottle (100) and a pressure relief valve (41) for controlling the connection or disconnection of the pressure relief line (42); wherein, when the pressure rod presses against the needle valve (21) to connect the gas cylinder (200) with the gas injection line (22) to inject gas into the water bottle (100), the pressure rod simultaneously acts on the pressure relief valve (41) to shut off the pressure relief line (42); when the needle valve (21) is released to shut off the gas injection line (22), the pressure rod can control the pressure relief valve (41) to connect the pressure relief line (42) to release gas and relieve pressure; Safety component (5) includes a whistle pipe (52) and a safety valve (53) respectively connected to the water bottle (100), and a whistle valve (51) connected to the end of the whistle pipe (52). The whistle valve (51) and the safety valve (53) are both opened by the pressure inside the water bottle (100), and the opening pressure value of the whistle valve (51) is less than the opening pressure value of the safety valve (53). When gas is injected into the water bottle (100) to make its pressure reach the opening pressure value of the whistle valve (51), part of the gas inside the water bottle (100) flows out of the whistle valve (51) through the whistle pipe (52) to emit a whistle warning.

2. The electric sparkling water machine as described in claim 1, characterized in that, The sparkling water machine includes a mounting base (16), and the pressure rod includes an upper pressure rod (32) and a lower pressure rod (33). One end of the upper pressure rod (32) and one end of the lower pressure rod (33) are pivotally connected to the opposite ends of the mounting base (16).

3. The electric sparkling water machine as described in claim 2, characterized in that, The output end of the motor (31) is connected to a crank (311) or a cam, and the other end of the upper pressure rod (32) is provided with a sliding groove (3220) that is movablely engaged with the crank (311) or the cam.

4. The electric sparkling water machine as described in claim 3, characterized in that, The upper pressure rod (32) includes a first crossbeam (321) pivotally connected to the mounting base (16), a second crossbeam (322) connected to the crank (311) or cam, and a longitudinal beam (323) longitudinally connected between the first crossbeam (321) and the second crossbeam (322).

5. The electric sparkling water machine as described in claim 4, characterized in that, The first crossbeam (321) is bent and protrudes toward the lower pressure rod (33), and the bottom surface of the first crossbeam (321) is provided with a protrusion (3211) that contacts the lower pressure rod (33).

6. The electric sparkling water machine as described in claim 1, characterized in that, A filter screen (221) is provided at one end of the gas injection pipeline (22) that is connected to the needle valve (21).

7. The electric sparkling water machine as described in claim 4, characterized in that, The upper pressure rod (32) includes a pressure relief protrusion (324) extending outward from the connection between the first crossbeam (321) and the longitudinal beam (323), and the pressure relief protrusion (324) is pressed against the pressure relief valve (41).

8. The electric sparkling water machine as described in any one of claims 1 to 7, characterized in that, The sparkling water machine also includes a manual operating component, which includes a manual button (14) or a manual knob, which is associated with the pressure rod to drive the pressure rod to move.

9. The electric sparkling water machine as described in any one of claims 1 to 7, characterized in that, The sparkling water machine includes a head base (11) and a head cover (12), with the head cover (12) and the head base (11) forming an installation cavity. The air injection component (2), drive component (3), pressure relief component (4) and safety component (5) are all located in the installation cavity. The pressure relief port (401) of the pressure relief component (4) and the exhaust port of the whistle valve (51) both extend to the bottom of the head base (11) to discharge gas to the outside of the installation cavity.

10. The electric sparkling water machine as described in claim 9, characterized in that, The machine head cover (12) is provided with an operation panel (13). The operation panel (13) displays buttons that allow users to select one of the multiple gas injection levels. When different gas injection levels are triggered, the duration for which the drive component (3) drives the needle valve (21) to open the gas cylinder (200) and the gas injection pipeline (22) to communicate is different.

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