Cold storage door pressure balancing device

Abstract

The utility model discloses a cold storage door pressure balancing device which comprises a door body and a linkage mechanism. A pressure balance opening is formed in the surface of the door body, the pressure balance opening penetrates through the surface of the door body, a partition plate is arranged in the pressure balance opening, and the partition plate is movably connected with the door body; one end of the handle rod is rotationally connected with the door body, one end of the lever is fixedly connected with the handle rod, the other end of the lever is hinged to one end of the connecting rod, and one end of the connecting rod is hinged to the partition plate; a lock head for locking the door body is fixed at one end of the handle rod; the pressure balance port is opened in the unlocking process of the door body, the internal and external pressure difference is reduced, and the pressure balance port can be closed synchronously when the cold storage door is closed; by arranging the linkage mechanism, two independent operation steps are synchronously completed, and operation is convenient and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration, and more specifically, relates to a pressure balancing device for a cold storage door. Background Art

[0002] At present, cold storage and other refrigeration equipment can store semi-finished and finished products such as food, chemical raw materials, and electronic instruments at constant temperature and humidity, and are widely used in various fields;

[0003] Chinese Patent Publication (Announcement) Number: CN219433586U; Publication (Announcement) Date: 2023-07-28 A door for a cold storage is disclosed, comprising a door body, one side of the door body is connected to the cold storage by a hinge, and a return device is also provided at the upper end of the door body; the hinge comprises a connecting plate connected to the door body, and a screw is provided on the connecting plate; and the hinge also comprises a fixing plate connected to the cold storage, and a support frame is provided on the fixing plate that cooperates with the screw thread; through the above-mentioned method, when the door body rotates, the screw rotates in the support frame, so that the door body can move up while opening; on the contrary, when the door body is closed, it not only promotes the fit between the door body and the cold storage, but also can solve the problem of looseness after the door body is closed; based on this, the hinge effectively solves the problem of cold air leakage caused by looseness after the existing door body is closed; at the same time, the setting of the return device enables the door body to return to the initial position after closing to further enhance the sealing of the door body to the cold storage;

[0004] As the cold storage continues to work, the cooling system inside it will cause internal pressure changes, resulting in different pressures inside and outside. When there is a large pressure difference between the inside and outside of the cold storage door, the door of the cold storage is still difficult to open. Utility Model Content

[0005] In order to solve the defects existing in the above-mentioned technology, the utility model provides a cold storage door pressure balancing device, which aims to improve the problem that the cold storage door is still difficult to open when there is a large air pressure difference between the inside and outside of the cold storage door.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A cold storage door pressure balancing device comprises a door body and a linkage mechanism;

[0008] A pressure balance port is provided on the surface of the door body, and the pressure balance port runs through the surface of the door body. A partition is provided in the pressure balance port, and the partition is movably connected to the door body;

[0009] The linkage mechanism includes a handle rod, a lever and a connecting rod. One end of the handle rod is rotatably connected to the door body, one end of the lever is fixedly connected to the handle rod, the other end of the lever is hinged to one end of the connecting rod, and one end of the connecting rod is hinged to the partition. A lock is fixed to one end of the handle rod for locking the door body.

[0010] In one embodiment of the utility model, a door frame is further included, a hinge is provided on one side of the door frame, a sealing structure is provided at the contact between the peripheral surface of the door frame and the inner surface of the door body, one side of the door body is connected to one side of the door frame through the hinge; a lock is fixed on the other side of the door frame, and the lock head is locked with the lock.

[0011] In one embodiment of the utility model, the handle rod is an L-shaped rod, the lock head is detachably fixed to the end of the short section of the L-shaped rod by bolts, the lock head is separated from the lock buckle by rotating the L-shaped rod to achieve unlocking, and the end of the long section of the L-shaped rod is provided with an anti-slip sleeve.

[0012] In one embodiment of the utility model, the short section of the L-shaped rod is rotatably connected to the door body via a bearing, and the short section of the L-shaped rod is installed with a reset torsion spring, which is used to push the L-shaped rod to rotate and reset, thereby driving the lock head to lock with the lock buckle.

[0013] In an embodiment of the utility model, a slide groove is provided in the door body, and the end of the partition is slidably engaged in the slide groove, and the partition is slidably connected to the door body through the slide groove.

[0014] In an embodiment of the present utility model, a sealing strip is provided at the connection between the side of the slide groove and the partition, and a sealing gasket is provided at the connection between the end of the partition and the pressure balance port.

[0015] In an embodiment of the utility model, a protective mesh is fixed to the pressure balance port, and the protective mesh is arranged on the outer surface of the door body.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] (1) The utility model provides a cold storage door pressure balancing device that penetrates the door surface through a pressure balancing port opened on the door surface, and the pressure balancing port is closed by a partition. Since the partition is movably connected to the door, the partition is driven to move so that air pressure enters the cold storage through the pressure balancing port to achieve internal and external pressure difference balance, so that the atmospheric pressure caused by the pressure is eliminated when the cold storage door is opened, making it easy to open the cold storage door;

[0018] (2) In a cold storage door pressure balancing device provided by the utility model, when one end of the hand-held handle rod is rotated to unlock the door body, the lever is driven to move, so that the lever is pulled to the connecting rod. Since one end of the connecting rod is hinged to the partition, the partition is pulled to move. During the process of unlocking the door body, the pressure balancing port is opened at the same time to reduce the pressure difference between the inside and the outside. When the cold storage door is closed, the pressure balancing port can also be closed synchronously. The existing small window separately arranged on the door body may sometimes be forgotten to be closed, resulting in the overflow of cold air. By setting a linkage mechanism, two separate operation steps can be completed synchronously, and the operation is convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a cold storage door pressure balancing device in an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of a cross-sectional structure in an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of a three-dimensional structure cut away in an embodiment of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the linkage mechanism in the embodiment of the utility model;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the driver in the embodiment of the utility model.

[0024] In the figure: 100, door body; 101, pressure balance port; 110, partition; 111, sliding rod; 130, door frame; 131, hinge; 133, lock; 150, protective mesh; 170, driver; 171, motor; 173, first transmission member; 175, second transmission member; 300, linkage mechanism; 310, handle bar; 311, lock; 313, anti-slip sleeve; 330, lever; 350, connecting rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments.

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In the examples, unless otherwise specified, all the means used are conventional means in the art.

[0028] See also Figure 1-Figure 5 , the present application provides a cold storage door pressure balancing device, including a door body 100 and a linkage mechanism 300;

[0029] In one embodiment of the present utility model, the partition 110 includes a stainless steel shell and a heat insulation cotton board filled in the stainless steel shell, and the partition 110 seals and covers the pressure balance port 101;

[0030] The surface of the door body 100 is provided with a pressure balance port 101, the pressure balance port 101 penetrates the surface of the door body 100, a partition plate 110 is arranged in the pressure balance port 101, and the partition plate 110 is movably connected to the door body 100;

[0031] The linkage mechanism 300 includes a handle rod 310, a lever 330 and a connecting rod 350. One end of the handle rod 310 is rotatably connected to the door body 100, one end of the lever 330 is fixedly connected to the handle rod 310, the other end of the lever 330 is hinged to one end of the connecting rod 350, and one end of the connecting rod 350 is hinged to the partition 110; a lock 311 for locking the door body 100 is fixed to one end of the handle rod 310.

[0032] In use, the pressure balance port 101 opened on the surface of the door body 100 penetrates the surface of the door body 100, and the pressure balance port 101 is closed by the partition 110. Since the partition 110 is movably connected to the door body 100, the partition 110 is driven to move so that the air pressure enters the cold storage through the pressure balance port 101 to achieve the balance of the internal and external pressure difference, which is convenient for opening the cold storage door;

[0033] When one end of the hand-held handle rod 310 is rotated to unlock the door body, the lever 330 is driven to move, so that the lever is pulled to the connecting rod 350. Since one end of the connecting rod 350 is hinged to the partition 110, the partition is pulled to move. During the process of unlocking the door body, the pressure balance port 101 is opened at the same time to reduce the pressure difference between the inside and the outside, so that the atmospheric pressure caused by the pressure is eliminated when opening, which is convenient for opening. When closing the cold storage door, the pressure balance port 101 can also be closed synchronously. The existing small window separately arranged on the door body may sometimes be forgotten to be closed, resulting in the overflow of cold air. By setting the linkage mechanism 300, two separate operation steps can be completed synchronously, and the operation is convenient and reliable.

[0034] See also Figure 1-Figure 3 In one embodiment of the utility model, it also includes a door frame 130, a hinge 131 is provided on one side of the door frame 130, a sealing structure is provided at the contact between the circumference of the door frame 130 and the inner surface of the door body 100, one side of the door body 100 and one side of the door frame 130 are connected through the hinge 131; a lock buckle 133 is fixed on the other side of the door frame 130, and the lock head 311 is locked with the lock buckle 133.

[0035] In one embodiment of the utility model, the handle rod 310 is an L-shaped rod, and the lock head 311 is detachably fixed to the end of the short section of the L-shaped rod by bolts. The lock head 311 is separated from the lock buckle 133 by rotating the L-shaped rod to achieve unlocking, and the end of the long section of the L-shaped rod is provided with an anti-slip sleeve 313.

[0036] Specifically, the L-shaped rod is one implementation of the present solution. The handle rod 310 includes but is not limited to the L-shape, and can also be any structure required in actual use that can be rotated to drive the lock head 311 to lock and unlock.

[0037] In one embodiment of the utility model, the short section of the L-shaped rod is rotatably connected to the door body 100 via a bearing, and the short section of the L-shaped rod is installed with a reset torsion spring, which is used to push the L-shaped rod to rotate and reset, driving the lock head 311 to lock with the lock buckle 133.

[0038] In an embodiment of the present utility model, a slide groove is provided in the door body 100, and the end of the partition plate 110 is slidably engaged in the slide groove, and the partition plate 110 is slidably connected to the door body 100 through the slide groove.

[0039] In an embodiment of the present invention, a sealing strip is provided at the connection between the side of the slide groove and the partition 110 , and a sealing gasket is provided at the connection between the end of the partition 110 and the pressure balance port 101 .

[0040] In an embodiment of the present invention, a protective mesh plate 150 is fixed to the pressure balance port 101 , and the protective mesh plate 150 is arranged on the outer surface of the door body 100 .

[0041] See also Figure 4-Figure 5 In one embodiment of the utility model, a sliding rod 111 is slidably connected to the surface of the partition 110, and a driver 170 for driving the sliding rod 111 to slide relative to the partition 110 is installed on the surface of the partition 110, and one end of the connecting rod 350 is hinged to the sliding rod 111, so that one end of the connecting rod 350 is indirectly hinged to the partition 110;

[0042] When the pressure difference between the inside and outside of the cold storage door needs to be adjusted, without pulling the handle bar 310 to open the door, the driver 170 drives the slide bar 111 to slide relative to the partition 110, so that the partition 110 is driven to slide and open the pressure balance port 101, so that the air pressure flows through the pressure balance port 101 to maintain the balance between the inside and the outside;

[0043] In one embodiment of the present invention, the driver 170 includes

[0044] A motor 171 fixed on the surface of the partition 110;

[0045] A first transmission member 173 fixedly connected to the slide rod 111;

[0046] a second transmission member 175 meshing with the first transmission member 173, wherein the driving shaft of the motor 171 is connected to the second transmission member 175;

[0047] The rotation of the motor 171 is driven by electrical control to realize electrical automation, reduce the inefficiency of manual operation, and make control more convenient;

[0048] In one embodiment of the present utility model, the first transmission member 173 is a rack, the second transmission member 175 is a worm, the worm is meshed with the rack, a sleeve is fixed on the surface of the partition 110, a rotating rod is inserted in the sleeve, one end of the rotating rod is coaxially fixedly connected with one end of the worm, and the other end of the rotating rod is coaxially fixedly connected with the driving shaft of the motor 171;

[0049] In order to ensure the stability of the operation of the driver 170, the first transmission member 173 is a rack, and the second transmission member 175 is a worm. The worm and the rack are meshed to make the transmission more stable and reliable.

[0050] Specifically, a sliding block is fixed on the surface of the partition 110, and the sliding rod 111 is slidably engaged with the sliding block;

[0051] A pressure relief valve is installed on the surface of the partition 110 to avoid the difference in internal and external pressures, which may cause the cold storage door to be deformed and damaged by the pressure force due to long-term use;

[0052] In one embodiment of the utility model, a first pressure sensor and a second pressure sensor for detecting the pressure on both sides, and an electrically connected single-chip microcomputer are respectively installed on the inner and outer sides of the door body 100 to monitor the pressure difference on both sides separated by the door body 100, and the electrical control input end of the motor 171 is electrically connected to the electrical control output end of the single-chip microcomputer.

[0053] The above-mentioned embodiments only express several implementation methods of the utility model. The descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent.

[0054] It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these are all within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A cold storage door pressure balancing device, characterized in that: include A door body (100), wherein a pressure balancing port (101) is provided on the surface of the door body (100), wherein the pressure balancing port (101) penetrates the surface of the door body (100), wherein a partition plate (110) is provided in the pressure balancing port (101), and wherein the partition plate (110) is movably connected to the door body (100); A linkage mechanism (300), the linkage mechanism (300) comprising a handle rod (310), a lever (330) and a connecting rod (350), one end of the handle rod (310) being rotatably connected to the door body (100), one end of the lever (330) being fixedly connected to the handle rod (310), the other end of the lever (330) being hinged to one end of the connecting rod (350), and one end of the connecting rod (350) being hinged to the partition (110); a lock (311) for locking the door body (100) is fixed to one end of the handle rod (310).

2. A cold storage door pressure balancing device according to claim 1, characterized in that: It also includes a door frame (130), one side of which is provided with a hinge (131), a sealing structure is provided at the contact point between the peripheral surface of the door frame (130) and the inner surface of the door body (100), one side of the door body (100) and one side of the door frame (130) are connected via the hinge (131); a lock buckle (133) is fixed on the other side of the door frame (130), and the lock head (311) is locked with the lock buckle (133).

3. A cold storage door pressure balancing device according to claim 2, characterized in that: The handle bar (310) is an L-shaped bar, the lock head (311) is detachably fixed to the end of the short section of the L-shaped bar by means of bolts, the lock head (311) is separated from the lock buckle (133) by rotating the L-shaped bar to achieve unlocking, and the end of the long section of the L-shaped bar is sleeved with an anti-slip sleeve (313).

4. A cold storage door pressure balancing device according to claim 3, characterized in that: The short section of the L-shaped rod is rotatably connected to the door body (100) via a bearing, and a reset torsion spring is installed on the short section of the L-shaped rod. The reset torsion spring is used to push the L-shaped rod to rotate and reset, thereby driving the lock head (311) to lock with the lock buckle (133).

5. A cold storage door pressure balancing device according to claim 1, characterized in that: A sliding groove is provided in the door body (100), and the end of the partition plate (110) is slidably engaged in the sliding groove, and the partition plate (110) is slidably connected to the door body (100) through the sliding groove.

6. A cold storage door pressure balancing device according to claim 5, characterized in that: A sealing strip is provided at the connection between the side of the slide groove and the partition (110), and a sealing gasket is provided at the connection between the end of the partition (110) and the pressure balance port (101).

7. A cold storage door pressure balancing device according to claim 1, characterized in that: A protective mesh plate (150) is fixed to the pressure balance port (101), and the protective mesh plate (150) is arranged on the outer surface of the door body (100).

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