Pressure supplementing structure of medical refrigeration equipment

Abstract

The utility model discloses a pressure supplementing structure of medical refrigeration equipment, which relates to the technical field of medical refrigeration equipment, and is characterized by comprising a refrigeration equipment main body and a pressure supply box, and the pressure supply box is communicated with the refrigeration equipment main body through a communicating pipe; the piston plate slides in the pressure supply box in a sealing manner; the piston plate divides the interior of the pressure supply box into a flow extraction bin and an air supply bin, the flow extraction bin communicates with the outside through an air inlet, and the air supply bin communicates with the communicating pipe through an air supply opening. The piston plate is provided with a communication port enabling the flow extraction bin and the air supply bin to be communicated, and an opening and closing mechanism for changing the opening and closing states of the air inlet, the air supply port and the communication port through movement of the piston plate is further arranged in the pressure supply box. According to the device, gas is fed into the refrigeration equipment main body when the box door of the refrigeration equipment main body is closed and the internal pressure is reduced, so that the pressure is continuously supplemented, the negative pressure drop is reduced, and the box door of the refrigeration equipment main body can be conveniently opened.

Description

Technical Field

[0001] The utility model relates to the technical field of medical refrigeration equipment, in particular to a pressure supplement structure of medical refrigeration equipment. Background Art

[0002] Medical refrigeration equipment requires a single-door, large-volume low-temperature freezer with a storage temperature as low as -40°C and good insulation effect. During the cooling process, the temperature inside the box drops, the air inside the box contracts, and a huge negative pressure is generated inside the equipment. Due to the good sealing effect of medical refrigeration equipment, the air pressure inside the box cannot reach equilibrium with the external air pressure in a short period of time (such as 60 seconds) after the door is closed. When the user needs to open the door, the strong negative pressure makes it difficult to open the door of the equipment. This process can even last for about ten minutes, which makes the user experience of the equipment poor.

[0003] Therefore, based on this, a design or technical improvement is proposed to solve the above-mentioned problem.

[0004] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned deficiencies and provide a pressure supplement structure for medical refrigeration equipment.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A pressure compensation structure for medical refrigeration equipment, comprising a refrigeration equipment body, and further comprising:

[0008] A pressure supply box, the pressure supply box is connected to the refrigeration equipment body through a connecting pipe;

[0009] A piston plate, the piston plate sliding in a sealing manner inside the pressure supply box;

[0010] The piston plate divides the interior of the pressure supply box into a flow extraction chamber and an air supply chamber. The flow extraction chamber is connected to the outside through the air inlet, and the air supply chamber is connected to the connecting pipe through the air delivery port.

[0011] The piston plate is provided with a connecting port for connecting the flow extraction chamber and the air supply chamber, and the pressure supply box is also provided with an opening and closing mechanism for changing the opening and closing states of the air inlet, the air delivery port and the connecting port through the movement of the piston plate.

[0012] Furthermore, the opening and closing mechanism includes a switch component for controlling the opening and closing of the air inlet, the air supply port, and the connecting port, and a touch component arranged between the switch component and the pressure supply box for driving the switch component to move.

[0013] Furthermore, the switch assembly includes a first gate group arranged on the connecting port for controlling the opening and closing of the connecting port, and a second gate group arranged in the pressure supply box for controlling the alternating opening and closing of the air inlet and the air delivery port.

[0014] Furthermore, the touch control assembly includes a resisting portion arranged on the switch assembly and a resisting portion arranged on the inner wall of the pressure supply box for resisting the resisting portion to move.

[0015] Furthermore, the first gate assembly includes a first limiting groove provided on the piston plate and a first switch plate which is limitedly slidable in the first limiting groove and seals against the communication port.

[0016] Furthermore, the second gate group includes a connecting slide rod movably connected to the first switch plate, a second switch plate arranged at one end of the connecting slide rod and movably engaged with the air inlet, and a third switch plate arranged at the other end of the connecting slide rod and movably engaged with the air supply port, and an air hole connected to the air inlet is opened on the second switch plate.

[0017] Furthermore, the abutted portion includes a first protrusion and a second protrusion respectively arranged on the upper and lower sides of the first switch plate, and the pushing portion includes a first push plate and a second push plate arranged on the upper and lower sides of the inner wall of the pressure supply box, and wedge surfaces that abut against each other are respectively arranged between the first protrusion and the first push plate and the second protrusion and the second push plate, and the wedge surfaces of the first protrusion and the second protrusion face oppositely.

[0018] Furthermore, the pressure supply box is also provided with a second limiting sliding groove for limiting the movement of the second switch plate.

[0019] Furthermore, a return spring is arranged between the inner wall of the pressure supply box and the piston plate.

[0020] Compared with the prior art, the beneficial effect of this solution is that when the refrigeration equipment body closes the door and the internal pressure decreases, the device supplies gas into the interior of the refrigeration equipment body, thereby continuously replenishing the pressure, reducing the negative pressure drop, thereby ensuring that the refrigeration equipment body can easily open the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of the installation between the utility model and the main body of the refrigeration equipment;

[0023] Figure 2 It is a cross-sectional stereoscopic schematic diagram of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the pressure supply box in the utility model;

[0025] Figure 4 This is a disassembly diagram of the switch assembly in the present utility model.

[0026] In the figure: 1. refrigeration equipment body; 11. connecting pipe; 2. supply pressure box; 21. piston plate; 22. suction chamber; 23. air supply chamber; 24. air inlet; 25. air delivery port; 26. connecting port; 3. first limit groove; 31. first switch plate; 32. connecting slide rod; 33. second switch plate; 34. third switch plate; 4. first protrusion; 41. second protrusion; 42. first push plate; 43. second push plate; 5. second limit slide groove; 51. return spring. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] like Figure 1-4 The pressure-compensating structure of a medical refrigeration device shown in the figure comprises a refrigeration device body 1, and also comprises a pressure supply box 2, which is connected to the refrigeration device body 1 through a connecting pipe 11; a piston plate 21, which slides in a sealed manner inside the pressure supply box 2; the piston plate 21 divides the inside of the pressure supply box 2 into two parts, a pumping bin 22 and an air supply bin 23, the pumping bin 22 is connected to the outside through an air inlet 24, and the air supply bin 23 is connected to the connecting pipe 11 through an air delivery port 25; a connecting port 26 is provided on the piston plate 21 to connect the pumping bin 22 and the air supply bin 23, and the pressure supply box 2 is also provided with a port that changes the air inlet 24 and the air delivery port 25 through the activity of the piston plate 21. 25. The opening and closing mechanism of the connecting port 26 in the open and closed state, after the refrigeration equipment main body 1 is closed, the temperature inside suddenly drops, which reduces the volume of the gas and forms a negative pressure, making it difficult to open the door. Through the setting of the pressure supply box 2, a certain amount of gas is stored inside it. When the door of the refrigeration equipment main body 1 is closed, the gas supply bin 23 in the pressure supply box 2 will replenish the gas into the interior of the refrigeration equipment main body 1, thereby alleviating the increase of negative pressure. When the gas in the pressure supply box 2 is exhausted, it will inhale the external gas through the operation of the opening and closing mechanism, and then can continuously replenish the gas until the gas volume in the refrigeration equipment main body 1 no longer decreases.

[0029] In one embodiment, the opening and closing mechanism includes a switch component for controlling the opening and closing of the air inlet 24, the air supply port 25, and the connecting port 26, and a touch component arranged between the switch component and the pressure supply box 2 for driving the switch component to move. Through the setting of the switch component, the pressure supply box 2 can realize two states of operation, one is to deliver gas to the refrigeration equipment main body 1, and the other is to inhale gas from the outside. These two states need to be kept alternating, so that the pressure supply box 2 will not be connected with the outside when delivering gas to the refrigeration equipment main body 1, and the pressure supply box 2 will not deliver gas to the refrigeration equipment main body 1 when inhaling gas, so as to avoid the refrigeration equipment main body 1 being directly connected to the outside and causing cold air leakage.

[0030] In one embodiment, the switch assembly includes a first gate group arranged on the connecting port 26 for controlling the opening and closing of the connecting port 26, and a second gate group arranged in the pressure supply box 2 for controlling the alternating opening and closing of the air inlet 24 and the air supply port 25. The first gate group includes a first limiting groove 3 arranged on the piston plate 21 and a first switch plate 31 that slides in the first limiting groove 3 and seals against the connecting port 26. The second gate group includes a connecting slide rod 32 that is movably connected to the first switch plate 31, a second switch plate 33 that is arranged at one end of the connecting slide rod 32 and movably abuts against the air inlet 24, and a third switch plate 34 that is arranged at the other end of the connecting slide rod 32 and movably abuts against the air supply port 25. The second switch plate 33 An air hole connected to the air inlet 24 is opened on the top, the touch component includes a receiving portion arranged on the switch component and a pushing portion arranged on the inner wall of the pressure supply box 2 for pushing the receiving portion to move, the receiving portion includes a first protrusion 4 and a second protrusion 41 respectively arranged on the upper and lower sides of the first switch plate 31, the pushing portion includes a first push plate 42 and a second push plate 43 arranged on the upper and lower sides of the inner wall of the pressure supply box 2, and wedge surfaces that abut against each other are respectively arranged between the first protrusion 4, the first push plate 42 and the second protrusion 41 and the second push plate 43, the wedge surfaces of the first protrusion 4 and the second protrusion 41 face oppositely, and the pressure supply box 2 is also provided with a second limiting slide groove 5 for limiting the movement of the second switch plate 33, and the second limiting The slide groove 5 ensures that the second gate group will not rotate out of position when it is active. A return spring 51 is also arranged between the inner wall of the pressure supply box 2 and the piston plate 21. When the pressure supply box 2 supplies air to the refrigeration equipment body 1, the piston plate 21 will move upward due to the reduction of gas in the air supply bin 23. At this time, air enters the suction bin 22 through the small air holes on the second switch plate 33, thereby ensuring that the upward movement speed of the piston plate 21 will not be too fast, avoiding excessive air flow disturbance inside the refrigeration equipment body 1. At the same time, the return spring 51 will be deformed. When the piston plate 21 moves up to a certain distance, the first push plate 42 will abut against the first protrusion 4, thereby pushing the first switch plate 31 to move horizontally, so that the connecting port 2 6 is opened, and during the translation of the first switch plate 31, it will drive the connecting slide bar 32 to translate, thereby making the third switch plate 34 and the air supply port 25 abut and close, and the second switch plate 33 and the air inlet 24 are staggered and opened, and then they are moved back and reset under the action of the reset spring 51, and the flow extraction bin 22 quickly sucks air from the outside through the air inlet 24, and fills the air supply bin 23 at the same time, until the second push plate 43 and the second protrusion 41 abut against each other, pushing the first switch plate 31 to close the connecting port 26, and the inside of the pressure supply box 2 returns to the initial state, and then the air can continue to be supplied to the inside of the refrigeration equipment body 1, thereby completing the continuous periodic automatic pressure replenishment effect on the refrigeration equipment body 1.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A pressure compensation structure for medical refrigeration equipment, comprising a refrigeration equipment body (1), characterized in that: include: A pressure supply box (2), the pressure supply box (2) being connected to the refrigeration equipment body (1) via a connecting pipe (11); A piston plate (21), the piston plate (21) slidingly sealingly inside the pressure supply box (2); The piston plate (21) divides the interior of the pressure supply box (2) into two parts: a flow extraction chamber (22) and an air supply chamber (23); the flow extraction chamber (22) is connected to the outside through an air inlet (24), and the air supply chamber (23) is connected to the connecting pipe (11) through an air delivery port (25); The piston plate (21) is provided with a connecting port (26) for connecting the flow extraction chamber (22) and the air supply chamber (23), and the pressure supply box (2) is also provided with an opening and closing mechanism for changing the opening and closing states of the air inlet (24), the air supply port (25) and the connecting port (26) through the movement of the piston plate (21).

2. A pressure supplement structure for medical refrigeration equipment according to claim 1, characterized in that: The opening and closing mechanism comprises a switch component for controlling the opening and closing of an air inlet (24), an air delivery port (25), and a communication port (26), and a touch control component arranged between the switch component and the pressure supply box (2) for driving the switch component to move.

3. A pressure supplement structure for medical refrigeration equipment according to claim 2, characterized in that: The switch assembly comprises a first gate group arranged on the communication port (26) for controlling the opening and closing of the communication port (26) and a second gate group arranged in the pressure supply box (2) for controlling the alternate opening and closing of the air inlet (24) and the air delivery port (25).

4. A pressure supplement structure for medical refrigeration equipment according to claim 3, characterized in that: The touch control component comprises a resisting portion arranged on the switch component and a resisting portion arranged on the inner wall of the pressure supply box (2) for resisting the resisting portion to move.

5. The pressure-compensating structure of medical refrigeration equipment according to claim 4, characterized in that: The first gate assembly comprises a first limiting groove (3) arranged on the piston plate (21) and a first switch plate (31) which is limitedly slidable in the first limiting groove (3) and sealably abuts against the communication port (26).

6. A pressure supplement structure for medical refrigeration equipment according to claim 5, characterized in that: The second switch assembly comprises a connecting slide bar (32) movably connected to the first switch plate (31), a second switch plate (33) arranged at one end of the connecting slide bar (32) and movably engaged with the air inlet (24), and a third switch plate (34) arranged at the other end of the connecting slide bar (32) and movably engaged with the air supply port (25), and the second switch plate (33) is provided with an air hole connected to the air inlet (24).

7. A pressure supplement structure for medical refrigeration equipment according to any one of claims 4 to 6, characterized in that: The abutting portion comprises a first protrusion (4) and a second protrusion (41) respectively arranged on the upper and lower sides of the first switch plate (31); the abutting portion comprises a first push plate (42) and a second push plate (43) arranged on the upper and lower sides of the inner wall of the pressure supply box (2); wedge-shaped surfaces abutting against each other are respectively arranged between the first protrusion (4), the first push plate (42) and the second protrusion (41), the second push plate (43); the wedge-shaped surfaces of the first protrusion (4) and the second protrusion (41) face oppositely.

8. The pressure-compensating structure of medical refrigeration equipment according to claim 7, characterized in that: The pressure supply box (2) is also provided with a second limiting sliding groove (5) for limiting the movement of the second switch plate (33).

9. A pressure supplement structure for medical refrigeration equipment according to claim 8, characterized in that: A return spring (51) is also provided between the inner wall of the pressure supply box (2) and the piston plate (21).

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