Cavity type vacuum machine capable of being simultaneously suitable for internal pumping and external pumping

Abstract

The invention relates to the technical field of vacuum machines, and particularly discloses a cavity type vacuum machine capable of being simultaneously suitable for internal pumping and external pumping. An air nozzle is arranged on the inner wall of the vacuum cavity, and the outer edge of the front end of the vacuum cavity is sunken downwards; the vacuum pump is mounted on the case and is communicated with the air tap; the two conductive columns are mounted in the case; the heating rod is arranged in the vacuum cavity; the box cover is installed on the machine box and used for opening or closing the vacuum cavity, a blocking piece is arranged on the inner wall of the front end of the box cover, and the blocking piece is attached to the outer edge of the front end of the vacuum cavity in the using process; the pressing strip is mounted on the inner side of the box cover; in the external vacuumizing process, the vacuum bag is horizontally arranged on the outer edge of the front end of the vacuum cavity and the upper surface of the heating rod. In the built-in vacuumizing process, the vacuum bag is horizontally arranged in the vacuum cavity and on the upper surface of the heating rod. According to the vacuum machine, materials such as food and the like and vacuum bags can be placed inside and outside the vacuum cavity to be vacuumized.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum machines, and in particular to a chamber type vacuum machine which can be used for both internal and external pumping. Background Art

[0002] With the popularization of vacuum preservation technology and vacuum cooking technology, chamber vacuum machines that can encapsulate liquids are widely used in home and commercial scenarios. The current chamber vacuum machine has the following problems: the chamber vacuum machine is limited by the volume of the vacuum chamber, and it is inconvenient to vacuum encapsulate vacuum bags whose size exceeds the size of the vacuum chamber. Specifically, there is a height difference between the outer edge of the vacuum chamber of the chamber vacuum machine and the upper edge of the heating rod, which causes the bag opening of the vacuum bag to penetrate from the outside of the vacuum chamber into the inside of the vacuum chamber. Two bends are formed at the outer edge of the vacuum chamber and the upper edge of the heating rod. During the vacuuming process, the bends of the vacuum bag are prone to form a closed area, blocking the air inside the vacuum bag from being drawn out, resulting in unsmooth vacuuming. The bag clamp is arranged between the outer edge of the vacuum chamber and the heating rod. Since the top is higher than the upper edge of the heating rod, the bag opening of the vacuum bag is bent at the upper edge of the bag clamp and the upper edge of the heating rod during the process of penetrating from the outside of the vacuum chamber into the inside of the vacuum chamber. In addition, the bending of the vacuum bag easily causes the bag opening of the vacuum bag to be unevenly heat-sealed. It can be seen from this that the current vacuum machine is not suitable for packaging vacuum bags that exceed the size of the vacuum chamber. Summary of the invention

[0003] The purpose of the present invention is to provide a chamber vacuum machine which is suitable for both internal and external vacuuming, and can place materials such as food and vacuum bags inside and outside the vacuum chamber for vacuuming.

[0004] In order to achieve the above object, the present invention provides a chamber vacuum machine which can be used for both internal and external pumping, comprising:

[0005] The chassis has a vacuum chamber inside, the inner wall of the vacuum chamber is provided with a gas nozzle, and the front outer edge of the vacuum chamber is concave downward;

[0006] A vacuum pump is installed on the chassis, and the vacuum pump is connected to the air nozzle;

[0007] Two conductive posts are mounted on the chassis, and the upper ends of the conductive posts extend into the vacuum chamber;

[0008] A heating rod is disposed in the vacuum chamber, and the heating rod is electrically connected to the upper end of the conductive column;

[0009] A box cover, mounted on the chassis, the box cover is used to open or close the vacuum chamber, a stopper is provided on the front inner wall of the box cover, and when the box cover closes the vacuum chamber, the stopper is attached to the front outer edge of the vacuum chamber; and

[0010] A pressure strip installed on the inner side of the box cover, when the box cover closes the vacuum chamber, the pressure strip abuts against the heating rod;

[0011] In which, during the vacuuming process of the external vacuum bag, the vacuum bag is horizontally arranged on the front outer edge of the vacuum chamber and the upper surface of the heating rod; during the vacuuming process of the internal vacuum bag, the vacuum bag is horizontally arranged inside the vacuum chamber and on the upper surface of the heating rod.

[0012] In some embodiments, the height difference between the upper surface of the heating rod and the front outer edge of the vacuum chamber is a, and 0cm≤a≤3cm is satisfied.

[0013] In some embodiments, a sealing ring is included, which is installed on the outer edge of the vacuum chamber. When the box cover closes the vacuum chamber, the box cover is pressed against the upper surface of the sealing ring, or the sealing ring is installed on the inner wall of the box cover. When the box cover closes the vacuum chamber, the outer edge of the vacuum chamber is pressed against the lower surface of the sealing ring.

[0014] In some embodiments, a limit member is included, and the limit member is installed on the outer edge of the vacuum chamber. When the box cover is pressed against the upper surface of the sealing ring, the upper end of the limit member abuts against the inner wall of the box cover, or the limit member is installed on the inner wall of the box cover. When the outer edge of the vacuum chamber is pressed against the lower surface of the sealing ring, the lower end of the limit member abuts against the outer edge of the vacuum chamber.

[0015] In some embodiments, the vacuum pump is a dry vacuum pump.

[0016] In some embodiments, a food tray is included, and the food tray is detachably installed in the vacuum chamber. The conductive column passes upward through the food tray and is electrically connected to the heating rod. The air nozzle extends upward through the food tray.

[0017] In some embodiments, a bag clip is included, and the bag clip is installed on the inner wall of the food tray or the inner wall of the vacuum chamber, and the bag clip is arranged opposite to the heating rod.

[0018] In some embodiments, the bag clamp includes a mounting portion and a rotating portion provided on the mounting portion, the bottom of the mounting portion is mounted on the inner wall of the food tray or the inner wall of the vacuum chamber, the upper portion of the mounting portion has a mounting groove, the rotating portion is rotatably connected to the mounting groove, the side wall of the rotating portion has a clamping groove, a spring piece is installed in the clamping groove, and the spring piece is used to clamp the bag opening of the vacuum bag in the clamping groove.

[0019] In some embodiments, a temperature sensor is included, and the temperature sensor is installed on the inner wall of the vacuum chamber, or the temperature sensor is installed on the bottom of the food tray.

[0020] In some embodiments, a filter is included, the filter is installed on the chassis, and the air nozzle is connected to the vacuum pump through the filter.

[0021] The present invention provides a chamber type vacuum machine which is applicable to both internal and external pumping. Compared with the prior art, the present invention has the following beneficial effects:

[0022] The pressure strip is installed on the inner side of the box cover. When the box cover closes the vacuum chamber, the pressure strip abuts against the heating rod. During the vacuuming process of the external vacuum bag, the vacuum bag is horizontally arranged on the front end outer edge of the vacuum chamber and the upper surface of the heating rod; during the vacuuming process of the internal vacuum bag, the vacuum bag is horizontally arranged inside the vacuum chamber and on the upper surface of the heating rod, which ensures smooth vacuuming of the vacuum bag and flat heat sealing, and is suitable for vacuuming vacuum bags of different sizes, so that food and other materials and vacuum bags can be placed inside and outside the vacuum chamber for vacuuming. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a chamber vacuum machine for removing a heating rod, which is suitable for both internal and external vacuuming, is provided in some embodiments of the present invention.

[0024] Figure 2 A schematic structural diagram of a chamber vacuum machine configured with a food tray that is applicable to both internal and external vacuuming, provided in some embodiments of the present invention.

[0025] Figure 3 For Figure 2 A schematic diagram of a structure in which a temperature sensor is configured at the bottom of a food tray of a chamber vacuum machine that can be used for both internal and external extraction.

[0026] Figure 4 A schematic diagram of the working structure of a chamber vacuum machine with a built-in vacuum bag that is suitable for both internal and external vacuuming is provided in some embodiments of the present invention.

[0027] Figure 5 A schematic diagram of the working structure of an external vacuum bag of a chamber vacuum machine which is suitable for both internal and external vacuuming is provided in some embodiments of the present invention.

[0028] Figure 6 A schematic diagram of the three-dimensional structure of a bag clamp of a chamber vacuum machine that can be used for both internal and external pumping is provided in some embodiments of the present invention.

[0029] Figure 7A schematic diagram of the side view structure of a bag clamp of a chamber vacuum machine that can be used for both internal and external pumping is provided in some embodiments of the present invention.

[0030] In the figure: 1. chassis; 11. vacuum chamber; 12. air nozzle; 13. vacuum bag; 2. conductive column; 3. heating rod; 4. box cover; 41. stopper; 5. pressure strip; 6. sealing strip; 7. limiter; 8. food tray; 9. bag clamp; 91. installation part; 92. rotating part; 93. installation slot; 94. card slot; 95. spring piece; 10. temperature sensor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0032] It should be understood that, in the description of the present application, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0033] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0034] like Figure 1-Figure 5 As shown, some embodiments of the present invention are applicable to both internal and external vacuum chambers, including a chassis 1, a vacuum pump, two conductive columns 2, a heating rod 3, a box cover 4, and a pressure strip 5. The vacuum pump is used to evacuate the vacuum chamber 11 of the chassis 1, the heating rod 3 is used to heat the vacuum bag 13, and the pressure strip 5 is used to press the vacuum bag 13, so as to achieve heat sealing of the vacuum bag 13. The vacuum pump is installed in the chassis 1 below the vacuum chamber 11.

[0035] The chassis 1 has a vacuum chamber 11 inside, and the inner wall of the vacuum chamber 11 is provided with an air nozzle 12. Specifically, the vacuum chamber 11 can be made of metal or plastic. If it is made of plastic, the vacuum chamber 11 has an overall streamlined shape, which is convenient for sealing under this structural design, and can make the stress situation of the vacuum pressure more reasonable; at the same time, by setting the bending shape of the edges, corners, sides, bottom and other positions, the volume of the vacuum chamber 11 is greatly reduced without affecting the actual capacity of the vacuum chamber 11. In this way, the cost of the vacuum chamber 11 is greatly reduced.

[0036] The vacuum pump is installed on the chassis 1, and the vacuum pump is connected to the air nozzle 12. Two conductive columns 2 are installed on the chassis 1, and the upper ends of the conductive columns 2 extend into the vacuum chamber 11. The heating rod 3 is arranged in the vacuum chamber 11, and the heating rod 3 is electrically connected to the upper ends of the conductive columns 2. The box cover 4 is installed on the chassis 1, and the box cover 4 is used to open or close the vacuum chamber 11. The pressure strip 5 is installed on the inner side of the box cover 4, and when the box cover 4 closes the vacuum chamber 11, the pressure strip 5 abuts against the heating rod 3. Among them, the front end refers to the end close to the user, and the rear end refers to the end away from the user.

[0037] In addition, the front outer edge of the vacuum chamber 11 is recessed downward. Specifically, the front outer edge of the vacuum chamber 11 is not on the same plane as the left and right outer edges and the rear outer edge of the vacuum chamber 11. The front outer edge is obviously lower. The front outer edge and the left and right outer edges are designed with a smooth transition, which is convenient for sealing. The front inner wall of the box cover 4 is provided with a stopper 41. When the box cover 4 closes the vacuum chamber 11, the stopper 41 fits the front outer edge of the vacuum chamber 11. In this way, by the stopper 41 fitting the recessed front outer edge of the vacuum chamber 11, the vacuum chamber 11 can be in a sealed state when the box cover 4 is closed.

[0038] During vacuuming, if the vacuum bag 13 packed with food or other materials is placed inside the vacuum chamber 11, the bag opening of the vacuum bag 13 is placed horizontally on the upper surface of the heating rod 3. If the vacuum bag 13 packed with food or other materials (a vacuum bag with a channel inside) is placed outside the vacuum chamber 11 (hereinafter referred to as external vacuuming), the bag opening of the vacuum bag 13 is placed horizontally on the front outer edge of the vacuum chamber 11 and the upper surface of the heating rod 3. Internal vacuuming is suitable for vacuum packaging of materials containing liquids, while external vacuuming has a fast vacuuming speed, and vacuum packaging of food and other materials is not limited by the size of the vacuum chamber. The chamber vacuum machine that realizes the integration of internal and external vacuuming has well solved the limitations of traditional chamber vacuum machines with single internal vacuuming or single external vacuuming, and meets more needs of users.

[0039] When in use, open the box cover 4 and place the vacuum bag 13 horizontally on the front outer edge of the vacuum chamber 11 and the upper surface of the heating rod 3. At this time, the surface of the vacuum bag 13 will not bend. When the box cover 4 is closed, turn on the vacuum pump to evacuate the vacuum chamber 11. When the air in the vacuum bag 13 is completely evacuated, turn on the heating rod 3 to heat the vacuum bag 13, and cooperate with the pressure strip 5 to press the vacuum bag 13 to perform heat sealing. In order to ensure smooth evacuation of the vacuum bag 13, an embossed vacuum bag is used.

[0040] Based on the above structural setting, whether the vacuuming operation is performed by using an internal vacuum bag 13 or an external vacuum bag 13, the vacuuming of the vacuum bag 13 can be smooth and the heat seal can be smooth, so it is suitable for vacuuming vacuum bags 13 of different sizes.

[0041] like Figure 1 As shown, in some embodiments, the difference in height between the upper surface of the heating rod 3 and the front outer edge of the vacuum chamber 11 is a, which satisfies 0cm≤a≤3cm. It should be noted that when a=0cm, the upper surface of the heating rod 3 and the front outer edge of the vacuum chamber 11 can be completely flush. At this time, the vacuum bag 13 is placed completely horizontally on the upper surface of the heating rod 3 and the front outer edge of the vacuum chamber 11. When a≤3cm, the upper surface of the heating rod 3 and the front outer edge of the vacuum chamber 11 are nearly flush. The specific height difference can be adjusted according to the actual effect, so that the vacuum bag 13 is placed nearly horizontally on the upper surface of the heating rod 3 and the front outer edge of the vacuum chamber 11, so that the heat-sealed bag mouth of the vacuum bag 13 remains flat.

[0042] like Figure 1 As shown, in some embodiments, the chamber vacuum machine applicable to both internal and external extraction includes a sealing ring 6, which is installed on the outer edge of the vacuum chamber 11. When the box cover 4 closes the vacuum chamber 11, the box cover 4 is pressed against the upper surface of the sealing ring 6. In other embodiments, the sealing ring 6 is installed on the inner wall of the box cover 4. When the box cover 4 closes the vacuum chamber 11, the outer edge of the vacuum chamber 11 is pressed against the lower surface of the sealing ring 6. In this way, the sealing ring 6 can further improve the sealing effect of the box cover 4 buckled on the chassis 1.

[0043] like Figure 1-3As shown, in some embodiments, when the vacuum chamber 11 is made of rigid material, the chamber vacuum machine that can be used for both internal and external extraction includes a stopper 7, which is installed on the outer edge of the vacuum chamber 11. When the box cover 4 is pressed against the upper surface of the sealing ring 6, the upper end of the stopper 7 abuts against the inner wall of the box cover 4, or the stopper 7 is installed on the inner wall of the box cover 4. When the outer edge of the vacuum chamber 11 is pressed against the lower surface of the sealing ring 6, the lower end of the stopper 7 abuts against the outer edge of the vacuum chamber 11. In this way, the exhaust channel of the vacuum bag 13 is prevented from being damaged by excessive pressing, which affects the efficiency of exhaust. Specifically, the stopper 7 can be a concave-convex dot structure or a concave-convex plane structure. The height of the stopper 7 is determined according to the material and thickness of the sealing ring 6, and meets the following requirements: it cannot be too high to cause leakage; nor can it be too low to cause the exhaust channel of the vacuum bag 13 to be damaged by pressing. In addition, if the vacuum chamber 11 is made of a flexible material, it has elasticity, so there is no need to set a limiter 7 .

[0044] In some embodiments, the vacuum pump adopts a dry vacuum pump, which is beneficial to reduce costs.

[0045] like Figure 2 and 3 As shown, in some embodiments, the chamber vacuum machine applicable to both internal and external extraction includes a food tray 8, which is detachably mounted in the vacuum chamber 11, the conductive column 2 passes upward through the food tray 8 and is electrically connected to the heating rod 3, and the air nozzle 12 extends upward through the food tray 8. In this way, the cleaning and maintenance of the chamber vacuum machine applicable to both internal and external extraction is facilitated by removing the food tray 8, and the hygiene in the vacuum chamber 11 can be maintained.

[0046] like Figure 1-5 As shown, in some embodiments, the chamber vacuum machine that can be used for both internal and external extraction includes a bag clamp 9, which is installed on the inner wall of the food tray 8 or the inner wall of the vacuum chamber 11, and the bag clamp 9 is arranged opposite to the heating rod 3. When the chamber vacuum machine that can be used for both internal and external extraction performs air extraction in the vacuum chamber 11, the bag clamp 9 is used to fix the vacuum bag 13 and keep the bag mouth of the vacuum bag 13 straight, so as to ensure the effect of heat sealing and flattening the vacuum bag 13. When the chamber vacuum machine that can be used for both internal and external extraction performs external extraction, the bag clamp 9 will not interfere with the area above the heating rod 3 where the vacuum bag 13 extends from the outside by lowering its height.

[0047] like Figure 6 and 7As shown, in some embodiments, the bag clamp 9 includes a mounting portion 91 and a rotating portion 92 disposed on the mounting portion 91. The lower portion of the mounting portion 91 is mounted on the inner wall of the food tray 8 or the inner wall of the vacuum chamber 11. The upper portion of the mounting portion 91 has a mounting groove 93. The rotating portion 92 is rotatably connected to the mounting groove 93. The side wall of the rotating portion 92 has a clamping groove 94. A spring 95 is installed in the clamping groove 94. The spring 95 is used to clamp the bag opening of the vacuum bag 13 in the clamping groove 94. When the vacuum bag 13 is evacuated, the rotating portion 92 is rotated to make the rotating portion 92 vertically upward. At this time, the spring 95 is used to clamp the bag opening of the vacuum bag 13 in the clamping groove 94. When the vacuum bag 13 is evacuated from the outside, the rotating portion 92 is rotated to make the rotating portion 92 perpendicular to the mounting portion 91 and stored in the mounting groove 93. At this time, the bag clamp 9 will not interfere with the area where the vacuum bag 13 extends from the outside into the upper part of the heating rod 3.

[0048] like Figure 1 and 3 As shown, in some embodiments, a temperature sensor 10 is included, and the temperature sensor 10 is installed on the inner wall of the vacuum chamber 11, or the temperature sensor 10 is installed on the bottom of the food tray 8. In this way, the temperature in the vacuum chamber 11 can be detected by the temperature sensor 10.

[0049] In some embodiments, a filter is included, and the filter is installed in the chassis 1, specifically, located in the chassis 1 below the vacuum chamber 11 to ensure a compact structure. The air nozzle 12 is connected to the vacuum pump through the filter. In this way, when the chamber vacuum machine that can be used for both internal and external pumping is in a vacuum state, the gas in the vacuum chamber 11 is drawn into the vacuum pump from the air nozzle 12 through the filter. If impurities such as liquid and dust accidentally enter the air nozzle 12, the filter can filter the impurities to avoid damage to the vacuum pump.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A chamber vacuum machine which can be used for both internal and external pumping, characterized in that: include: The chassis has a vacuum chamber inside, the inner wall of the vacuum chamber is provided with a gas nozzle, and the front outer edge of the vacuum chamber is concave downward; A vacuum pump is installed on the chassis, and the vacuum pump is connected to the air nozzle; Two conductive posts are mounted on the chassis, and the upper ends of the conductive posts extend into the vacuum chamber; A heating rod is disposed in the vacuum chamber, and the heating rod is electrically connected to the upper end of the conductive column; A box cover is installed on the chassis, the box cover is used to open or close the vacuum chamber, and a stopper is provided on the front inner wall of the box cover. When the box cover closes the vacuum chamber, the stopper is attached to the front outer edge of the vacuum chamber; as well as A pressure strip installed on the inner side of the box cover, when the box cover closes the vacuum chamber, the pressure strip abuts against the heating rod; In which, during the vacuuming process of the external vacuum bag, the vacuum bag is horizontally arranged on the front outer edge of the vacuum chamber and the upper surface of the heating rod; during the vacuuming process of the internal vacuum bag, the vacuum bag is horizontally arranged inside the vacuum chamber and on the upper surface of the heating rod.

2. The chamber type vacuum machine applicable to both internal and external pumping according to claim 1, characterized in that: The difference in height between the upper surface of the heating rod and the front outer edge of the vacuum chamber is a, and 0cm≤a≤3cm is satisfied.

3. The chamber type vacuum machine applicable to both internal and external pumping according to claim 1, characterized in that: It includes a sealing ring, which is installed on the outer edge of the vacuum chamber. When the box cover closes the vacuum chamber, the box cover is pressed against the upper surface of the sealing ring, or the sealing ring is installed on the inner wall of the box cover. When the box cover closes the vacuum chamber, the outer edge of the vacuum chamber is pressed against the lower surface of the sealing ring.

4. The chamber type vacuum machine applicable to both internal and external pumping according to claim 3, characterized in that: It includes a limiting member, which is installed on the outer edge of the vacuum chamber. When the box cover is pressed against the upper surface of the sealing ring, the upper end of the limiting member abuts against the inner wall of the box cover, or the limiting member is installed on the inner wall of the box cover. When the outer edge of the vacuum chamber is pressed against the lower surface of the sealing ring, the lower end of the limiting member abuts against the outer edge of the vacuum chamber.

5. The chamber type vacuum machine applicable to both internal and external pumping according to claim 1, characterized in that: The vacuum pump is a dry vacuum pump.

6. The chamber type vacuum machine applicable to both internal and external pumping according to claim 1, characterized in that: It comprises a food tray which is detachably mounted in the vacuum chamber, the conductive column passes upward through the food tray and is electrically connected to the heating rod, and the air nozzle extends upward through the food tray.

7. The chamber type vacuum machine applicable to both internal and external pumping according to claim 6, characterized in that: It comprises a bag clip, which is installed on the inner wall of the food tray or the inner wall of the vacuum chamber, and the bag clip is arranged opposite to the heating rod.

8. The chamber type vacuum machine applicable to both internal and external pumping according to claim 7, characterized in that: The bag clamp includes a mounting portion and a rotating portion arranged on the mounting portion, the bottom of the mounting portion is mounted on the inner wall of the food tray or the inner wall of the vacuum chamber, the upper portion of the mounting portion has a mounting groove, the rotating portion is rotatably connected to the mounting groove, the side wall of the rotating portion has a clamping groove, a spring piece is installed in the clamping groove, and the spring piece is used to clamp the bag opening of the vacuum bag in the clamping groove.

9. The chamber type vacuum machine applicable to both internal and external pumping according to claim 6, characterized in that: A temperature sensor is included, and the temperature sensor is installed on the inner wall of the vacuum chamber, or the temperature sensor is installed on the bottom of the food tray.

10. The chamber type vacuum machine applicable to both internal and external pumping according to claim 1, characterized in that: A filter is included, wherein the filter is installed on the chassis, and the air nozzle is connected to the vacuum pump through the filter.

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