CN112432419A - Air pressure balance structure, control method thereof and refrigerating and freezing device - Google Patents
Air pressure balance structure, control method thereof and refrigerating and freezing device Download PDFInfo
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- CN112432419A CN112432419A CN202011385803.5A CN202011385803A CN112432419A CN 112432419 A CN112432419 A CN 112432419A CN 202011385803 A CN202011385803 A CN 202011385803A CN 112432419 A CN112432419 A CN 112432419A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008014 freezing Effects 0.000 title abstract description 13
- 238000007710 freezing Methods 0.000 title abstract description 13
- 238000012806 monitoring device Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/047—Pressure equalising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/02—Details of doors or covers not otherwise covered
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The application provides an air pressure balance structure, a control method thereof and a refrigerating and freezing device, a balance channel and a movable part; the balance channel comprises an inlet and an outlet; the inlet is communicated with the outside; the outlet is communicated with the chamber; the movable part is arranged in the balance channel; the movable part is used for separating the inlet and the outlet as a first position, and the movable part is used for communicating the inlet and the outlet as a second position; the movable portion is movable between a first position and a second position. According to the air pressure balance structure, the control method thereof and the refrigerating and freezing device, the problem that a user is hard to open a door can be solved.
Description
Technical Field
The application belongs to the technical field of refrigerators, and particularly relates to an air pressure balance structure, a control method of the air pressure balance structure and a refrigerating and freezing device.
Background
At present, the requirements of people on comfort and convenience are higher and higher, and the frozen and refrigerated products have the characteristics of good sealing performance and large internal and external pressure difference, so that a user can open the door difficultly and even cannot open the door.
Therefore, how to provide an air pressure balancing structure, a control method thereof and a refrigerating and freezing device which can solve the problem of great effort for opening the door by a user becomes a problem which needs to be solved by those skilled in the art urgently.
Disclosure of Invention
Therefore, the technical problem to be solved by the present application is to provide an air pressure balancing structure, a control method thereof and a refrigeration and freezing device, which can solve the problem that a user needs to open a door with great effort.
In order to solve the above problems, the present application provides an air pressure balance structure, including:
a balancing channel; the balance channel comprises an inlet and an outlet; the inlet is communicated with the outside; the outlet is communicated with the chamber;
and a movable portion; the movable part is arranged in the balance channel; the movable part is used for separating the inlet and the outlet as a first position, and the movable part is used for communicating the inlet and the outlet as a second position; the movable portion is movable between a first position and a second position.
Preferably, the balance channel comprises a flow port communicated with the inlet and the outlet; the movable part is provided with a plugging piece; the plugging piece is matched with the flow opening; when the movable part is positioned at the first position, the flow opening is blocked by the blocking piece; and/or the blocking member opens the flow opening when the movable portion is in the second position.
Preferably, the movable part comprises a movable part body; the blocking piece is arranged on the position of the movable part body close to the circulation port; the cross sectional area of the blocking piece is gradually reduced towards the direction close to the circulation port;
and/or, the balancing channel comprises a channel body; the cross section of the circulation port is smaller than that of the channel body;
and/or a filtering structure is arranged at the inlet.
Preferably, a mounting part and an elastic part are arranged in the balance channel; the first end of the elastic piece is arranged on the elastic piece; the second end of the elastic piece is connected with the movable part.
Preferably, the movable portion is movable in the axial direction of the balance passage to move between the first position and the second position;
and/or when the elastic piece is in a free state, the movable part is positioned at the first position;
and/or the air pressure balance structure further comprises a driving part, and the driving part is used for driving the movable part to move to the second position.
Preferably, the drive portion comprises a magnetic mechanism; the magnetic mechanism is used for generating magnetic field force; the magnetic field force is used for driving the movable part to move to the second position.
Preferably, the magnetic mechanism comprises a magnetic component and an electric circuit connected with the magnetic component; a control switch is arranged on the circuit; the control switch is used for controlling the on-off of the circuit.
Preferably, the magnetic assembly comprises a first electromagnet; the first electromagnet is arranged outside the balance channel and corresponds to the position of the movable part;
and/or, the magnetic mechanism comprises a second electromagnet; the second electromagnet is arranged outside the balance channel and corresponds to the position of the movable part.
Preferably, a protection switch is further arranged on the circuit; the protection switch is connected in series with the control switch;
and/or the protection switch is a normally closed switch;
and/or the control switch is a normally open switch;
and/or the control switch is a microswitch;
and/or the air pressure balance structure further comprises a current monitoring device; the current monitoring device is connected with the protection switch;
and/or the air pressure balancing structure also comprises an alarm; the alarm is connected with the current monitoring device.
According to still another aspect of the present application, there is provided a refrigeration and freezing apparatus including the air pressure balancing structure.
Preferably, the refrigeration and freezing device comprises a door body; the door body comprises a door body; the balance channel is arranged in the door body;
and/or the door body also comprises a handle; the normally open switch is arranged on the handle.
According to still another aspect of the present application, there is provided an air pressure balance structure control method as described above, including the steps of:
when the air pressure balance structure also comprises a driving part, the driving part comprises a magnetic mechanism; the magnetic mechanism comprises a magnetic component and a circuit connected with the magnetic component; when a control switch is arranged on the circuit, the working state of the control switch is detected;
when the circuit is also provided with a protection switch, the protection switch is controlled to be switched on and off according to the working state of the control switch.
Preferably, the controlling of the opening and closing of the protection switch according to the operating state of the control switch comprises the following steps:
when the control switch is clamped, the protection switch is controlled to be switched off and then switched on;
and/or, when the control switch is in fault, the protection switch is controlled to be switched off;
and/or when the air pressure balancing structure further comprises an alarm, the alarm is controlled to give an alarm when the control switch is in failure.
Preferably, the detecting the operating state of the control switch comprises the steps of:
detecting the current duration t1 in the protection switch at a time;
the operating state of the control switch is determined on the basis of the duration t1 of the current.
Preferably, determining the operating state of the control switch on the basis of the duration t of the current comprises the steps of:
when t1> t, the control switch is stuck; wherein t is a preset time.
Preferably, the step of detecting the operating state of the control switch further comprises the steps of:
when t1> t, the current duration in the secondary detection protection switch is t 2;
if t2> t, the control switch fails; wherein t is a preset time.
The application provides an air pressure balance structure, a control method thereof and a refrigerating and freezing device, which can solve the problem that a user is hard to open a door.
Drawings
FIG. 1 is a schematic structural diagram of an exemplary pressure balance structure;
FIG. 2 is a circuit diagram of an exemplary embodiment of a pressure balance structure;
fig. 3 is a schematic structural view of a refrigeration and freezing apparatus according to an embodiment of the present application.
The reference numerals are represented as:
1. a box body; 2. sealing the door; 3. a door body; 4. a handle; 5. a control switch; 6. a balancing channel; 61. an inlet; 62. an outlet; 7. an electromagnet; 8. a protection switch; 9. a current monitoring device; 10. a movable portion; 11. a filter structure; 12. an elastic member; 13. a flow port; 14. and (4) a mounting piece.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, a gas pressure balancing structure includes: the balance channel 6 and the movable portion 10; the equalization channel 6 comprises an inlet 61 and an outlet 62; the inlet 61 is communicated with the outside; the outlet 62 communicates with the chamber; the movable part 10 is arranged in the balance channel 6; the movable part 10 is used for separating the inlet 61 from the outlet 62 to be a first position, and the movable part 10 is used for communicating the inlet 61 with the outlet 62 to be a second position; the movable part 10 can move between the first position and the second position, and the problem that the refrigerator is hard to open due to large indoor and outdoor pressure difference of the storage chamber can be solved.
The present application also discloses embodiments in which the balancing channel 6 comprises a flow port 13 communicating the inlet 61 and the outlet 62; the movable part 10 is provided with a plugging piece; the plugging piece is matched with the flow port 13; when the movable part 10 is at the first position, the blocking piece blocks the flow opening 13; when the movable part 10 is in the second position, the closure opens the through-flow opening 13.
The present application also discloses embodiments in which the mobile portion 10 includes a mobile portion 10 body; the blocking piece is arranged on the position of the movable part 10 body close to the circulation port 13; and the cross sectional area of the plugging piece is gradually reduced towards the direction close to the circulation port 13; the plugging piece is a conical tapered needle.
The balancing channel 6 comprises a channel body; the cross section of the flow opening 13 is smaller than the cross section of the channel body;
the inlet 61 is provided with a filtering structure 11; avoid damp and hot gas to get into the storeroom and cause the problem of frosting, filtration 11 includes the active carbon, and the main function is the moisture of absorption entering in the box 1 air, avoids increasing system energy consumption and frosting.
The application also discloses embodiments, wherein a mounting part 14 and an elastic part 12 are arranged in the balance channel 6; a first end of the elastic member 12 is disposed on the elastic member 12; a second end of the elastic member 12 is connected to the movable portion 10.
The present application also discloses embodiments in which the movable portion 10 is movable in the axial direction of the equalizing channel 6 to move between a first position and a second position;
when the elastic element 12 is in a free state, the movable part 10 is located at the first position;
the air pressure balancing structure further includes a driving part for driving the movable part 10 to move to the second position.
The present application also discloses some embodiments, the drive portion includes a magnetic mechanism; the magnetic mechanism is used for generating magnetic field force; the magnetic force is used to drive the movable portion 10 to move to the second position.
The application also discloses some embodiments, the magnetic mechanism includes a magnetic component and a circuit connected to the magnetic component; a control switch 5 is arranged on the circuit; the control switch 5 is used for controlling the on-off of the circuit.
The application also discloses embodiments, the magnetic assembly comprising a first electromagnet 7; the first electromagnet 7 is arranged outside the balance channel 6 and corresponds to the position of the movable part 10; the first electromagnet 7 and the second electromagnet 7 are both electromagnets; the movement process of the magnetic mechanism driving the movable part 10 is similar to the principle of a direct-acting solenoid valve.
The magnetic mechanism comprises a second electromagnet 7; the second electromagnet 7 is arranged outside the balance channel 6 and corresponds to the position of the movable part 10. When artificial touching micro-switch, micro-switch is in the closure state, and the electro-magnet produced magnetic field this moment and drives movable part 1 and toper needle right motion promptly, and indoor damp and hot gas gets into by the entry of pressure balance pipe after filtration 11 prefilter and dehumidification, gets into in the storage room by export 62 behind balanced passageway 6, realizes indoor outer pressure balance. When limbs left the micro switch, the micro switch was in normally open state, and the electro-magnet loses magnetic force, and spring mount supporting spring moves left, and under the cooperation of indoor outer differential pressure, the toper needle moves left to primary importance and sealed conical surface formation sealed effect, along with the reduction of storeroom inside temperature, indoor outer differential pressure crescent, sealed effect can be better.
The application also discloses some embodiments, and a protection switch 8 is also arranged on the circuit; the protection switch 8 is connected with the control switch 5 in series;
the protection switch 8 is a normally closed switch;
the control switch 5 is a normally open switch; the control switch 5 is a microswitch, and the problem that the indoor and outdoor pressure balance pipes are opened for a long time when the microswitch is blocked or opened for a long time can be effectively solved. The balancing device can be started only by pressing the normally open switch when the door is opened, so that the problems of energy consumption increase, frosting and the like caused by the fact that gas enters the storage chamber for many times are avoided. The reliability of the device is improved through the microswitch and the protection switch 8.
The air pressure balance structure also comprises a current monitoring device 9; the current monitoring device 9 is connected with the protection switch;
the air pressure balance structure also comprises an alarm; the alarm is connected with the current monitoring device 9; the alarm may be an audible and visual alarm. The equalization channel 6 is made of a pressure equalization tube.
Protective covers with meshes are arranged at the inlet 61 and the outlet 62 to prevent smaller objects such as insects from entering the pressure balance pipe); the door seal 2 of the refrigerator plays a role in sealing, the normally closed switch can prevent the indoor and outdoor pressure balance pipes from being always in a communicated state, the circuit board, namely the current monitoring device 9 plays a role in monitoring current, and the pressure balance pipeline can realize indoor and outdoor pressure balance through the indoor and outdoor pressure balance pipes; the microswitch controls the operation of the movable part 10, the plugging piece is used for communicating or blocking indoor and outdoor gas, and the circulation port 13 is matched with the plugging piece to play a sealing role; the mounting member 14 is a spring fixing bracket, and plays a role in fixing the spring and supporting the activated carbon.
Referring to fig. 3 in combination, according to an embodiment of the present application, there is provided a refrigeration and freezing apparatus, including an air pressure balancing structure, where the air pressure balancing structure is the above-mentioned air pressure balancing structure.
The application also discloses some embodiments, and the cold storage and refrigeration device comprises a door body 3; the door body 3 comprises a door body 3 body; the balance channel 6 is arranged in the door body 3; the refrigerating and freezing device is a refrigerator.
By combining the characteristics of the structure of the frozen and refrigerated product, the micro switch and the pressure balance pipe are respectively arranged at the door handle 4 of the frozen and refrigerated product and the side surface of the door body 3 of the frozen and refrigerated product from the aspects of appearance, convenient operation and less damage to the heat insulation layer.
The novel indoor and outdoor air pressure balancing device mainly comprises a filter screen component, a conical needle, a micro switch, a normally closed switch, a current monitoring device 9, a pressure balancing pipe, a spring, an electromagnet and the like; the micro switch is placed in the inner side of the handle 4, so that frozen and refrigerated products can be conveniently opened, the pressure balance pipe is placed on the side face of the frozen and refrigerated product door body 3, the inner side of the door handle 4 is more suitable, but the micro switch is placed on the side face better from the angle of less damaging the structure and the heat insulation layer of the frozen and refrigerated products, and the structure of a pipeline is simplified. The door seal 2 is arranged on the inner side of the door body 3 and plays a role of sealing.
The door body 3 also comprises a handle 4; the normally open switch is provided on the handle 4. The door seal 2, the heat-insulating layer and other structures of the frozen and refrigerated products can not be damaged, and the phenomenon of cold leakage and even frosting of the refrigerator can be prevented.
Referring to fig. 2 in combination, according to an embodiment of the present application, there is provided a method for controlling a pressure balance structure, including the following steps:
when the air pressure balance structure also comprises a driving part, the driving part comprises a magnetic mechanism; the magnetic mechanism comprises a magnetic component and a circuit connected with the magnetic component; when the control switch 5 is arranged on the circuit, the working state of the control switch 5 is detected;
when the circuit is also provided with a protection switch 8, the protection switch 8 is controlled to be opened and closed according to the working state of the control switch 5.
The application also discloses some embodiments, and according to the working state of the control switch 5, the step of controlling the protection switch 8 to be opened and closed comprises the following steps:
when the control switch 5 is clamped, the protection switch 8 is controlled to be switched off and then switched on;
when the control switch 5 fails, the protection switch 8 is controlled to be switched off;
when the air pressure balancing structure further comprises an alarm, the alarm is controlled to give an alarm when the control switch 5 fails.
The application also discloses some embodiments, and the detecting the working state of the control switch 5 comprises the following steps:
the duration t1 of the current in the primary detection circuit breaker 8;
the operating state of the control switch 5 is determined on the basis of the duration t1 of the current.
The present application also discloses embodiments, wherein determining the operating state of the control switch 5 according to the duration t of the current comprises the following steps:
when t1> t, the control switch 5 is stuck; wherein t is a preset time.
The application also discloses some embodiments, and the step of detecting the working state of the control switch 5 further comprises the following steps:
when t1> t, the current duration in the protection switch 8 is detected twice t 2;
if t2> t, the control switch 5 fails; wherein t is a preset time.
Namely, the control switch 5 is always in a normally open state, and the protection switch 8 is always in a closed state. Over time, the control switch 5, i.e. the microswitch, may become stuck, causing the equalization channel 6 to be open for a long time. The invention is adopted, and the control switch 5, the current monitoring device 9, the protection switch 8 and the door closing switch are matched with each other; this phenomenon is solved. When the door closing switch is turned off, the door body 3 is indicated to be closed, and if the current monitoring device 9 detects that the current duration time exceeds the preset time at the moment; illustrating the possible jamming of the microswitch. Aiming at the phenomenon, the normally closed switch is changed into an open state, the circuit is cut off, the electromagnet loses magnetic force, then the plugging degree moves leftwards under the pushing of the spring and the pressure difference to form a sealing effect with a circulating hole, then the normally closed switch resets, the current is detected again, if the current is detected again, the microswitch is not allowed to reset, and the alarm prompt appears at the moment. Therefore, the indoor and outdoor are prevented from being in a communicated state for a long time. The preset time t is 10 s.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (16)
1. An air pressure equalizing structure, comprising:
a balancing channel (6); the equalization channel (6) comprising an inlet (61) and an outlet (62); the inlet (61) is communicated with the outside; the outlet (62) is communicated with the chamber;
and a movable portion (10); the movable part (10) is arranged in the balance channel (6); the movable part (10) is used for separating the inlet (61) and the outlet (62) to be a first position, and the movable part (10) is used for communicating the inlet (61) and the outlet (62) to be a second position; the movable portion (10) is movable between a first position and a second position.
2. The air pressure equalizing structure according to claim 1, wherein the equalizing passage (6) includes a communication port (13) therein communicating the inlet (61) and the outlet (62); the movable part (10) is provided with a plugging piece; the closure piece is adapted to the through-flow opening (13); when the movable part (10) is in the first position, the blocking piece blocks the flow opening (13); and/or the closure opens the through-flow opening (13) when the movable portion (10) is in the second position.
3. The air pressure equalizing structure according to claim 2, wherein the movable portion (10) comprises a movable portion (10) body; the blocking piece is arranged on the position of the movable part (10) body close to the circulation port (13); and the cross-sectional area of the blocking piece is gradually reduced towards the direction close to the circulation port (13);
and/or the balancing channel (6) comprises a channel body; the cross section of the through-flow opening (13) is smaller than the cross section of the channel body;
and/or a filtering structure (11) is arranged at the inlet (61).
4. The air pressure equalizing structure according to claim 1, wherein a mounting member (14) and an elastic member (12) are provided in the equalizing passage (6); the first end of the elastic part (12) is arranged on the elastic part (12); the second end of the elastic piece (12) is connected with the movable part (10).
5. The air pressure equalizing structure according to claim 4, wherein the movable portion (10) is movable in an axial direction of the equalizing passage (6) to move between the first position and the second position;
and/or the movable part (10) is in the first position when the elastic element (12) is in a free state;
and/or the air pressure balance structure further comprises a driving part, and the driving part is used for driving the movable part (10) to move to the second position.
6. The air pressure equalizing structure of claim 5, wherein the driving part comprises a magnetic mechanism; the magnetic mechanism is used for generating magnetic field force; the magnetic field force is used for driving the movable part (10) to move to the second position.
7. The air pressure equalizing structure of claim 6, wherein the magnetic mechanism comprises a magnetic component and an electrical circuit coupled to the magnetic component; a control switch (5) is arranged on the circuit; the control switch (5) is used for controlling the on-off of the circuit.
8. A gas pressure equalizing structure according to claim 7, wherein said magnetic assembly comprises a first electromagnet (7); the first electromagnet (7) is arranged outside the balance channel (6) and corresponds to the position of the movable part (10);
and/or the magnetic means comprise a second electromagnet (7); the second electromagnet (7) is arranged outside the balance channel (6) and corresponds to the position of the movable part (10).
9. The air pressure balancing structure of claim 7, wherein a protection switch (8) is further provided on the circuit; the protection switch (8) is connected with the control switch (5) in series;
and/or the protection switch (8) is a normally closed switch;
and/or the control switch (5) is a normally open switch;
and/or the control switch (5) is a microswitch;
and/or, the air pressure balancing structure further comprises a current monitoring device (9); the current monitoring device (9) is connected with the protection switch;
and/or the air pressure balancing structure further comprises an alarm; the alarm is connected with the current monitoring device (9).
10. A cold storage and refrigeration appliance comprising a pressure equalising structure, wherein the pressure equalising structure is as claimed in any one of claims 1 to 9.
11. A refrigerator-freezer according to claim 10, characterized in that the refrigerator-freezer comprises a door (3); the door body (3) comprises a door body (3) body; the balance channel (6) is arranged in the door body (3) body;
and/or the door body (3) further comprises a handle (4); the normally open switch is arranged on the handle (4).
12. A control method of a gas pressure balance structure according to any one of claims 1 to 9, comprising the steps of:
when the air pressure balance structure further comprises a driving part, the driving part comprises a magnetic mechanism; the magnetic mechanism comprises a magnetic component and a circuit connected with the magnetic component, and when a control switch (5) is arranged on the circuit, the working state of the control switch (5) is detected;
when the circuit is further provided with a protection switch (8), the protection switch (8) is controlled to be opened and closed according to the working state of the control switch (5).
13. The air pressure balance structure control method according to claim 12, wherein the controlling of the opening and closing of the protection switch (8) according to the operation state of the control switch (5) comprises the steps of:
when the control switch (5) is clamped, the protection switch (8) is controlled to be opened and closed;
and/or, when the control switch (5) is failed, the protection switch (8) is controlled to be switched off;
and/or when the air pressure balance structure further comprises an alarm, when the control switch (5) is in failure, the alarm is controlled to give an alarm.
14. The control method of the air pressure balance structure according to claim 12, wherein the detecting the operation state of the control switch (5) comprises the steps of:
-detecting the current duration t1 in the protection switch (8) once;
the operating state of the control switch (5) is determined as a function of the duration t1 of the current.
15. A control method of a gas pressure balancing structure according to claim 14, characterized in that said determining the operating state of the control switch (5) according to the duration t of the current flow comprises the steps of:
when t1> t, the control switch (5) is stuck; wherein t is a preset time.
16. The air pressure balance structure control method according to claim 14, wherein the detecting of the operating state of the control switch (5) further comprises the steps of:
detecting the current duration t2 in the protection switch (8) twice when t1> t;
if t2> t, the control switch (5) is failed; wherein t is a preset time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385803.5A CN112432419A (en) | 2020-12-01 | 2020-12-01 | Air pressure balance structure, control method thereof and refrigerating and freezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385803.5A CN112432419A (en) | 2020-12-01 | 2020-12-01 | Air pressure balance structure, control method thereof and refrigerating and freezing device |
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| Publication Number | Publication Date |
|---|---|
| CN112432419A true CN112432419A (en) | 2021-03-02 |
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| CN202011385803.5A Withdrawn CN112432419A (en) | 2020-12-01 | 2020-12-01 | Air pressure balance structure, control method thereof and refrigerating and freezing device |
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| Country | Link |
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| CN (1) | CN112432419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117469894A (en) * | 2023-12-26 | 2024-01-30 | 珠海格力电器股份有限公司 | Air pressure balancing device, low-temperature preservation box and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10203425A1 (en) * | 2002-01-28 | 2003-08-07 | Horst Baehring | Freezer cabinet with pressure equalization has arrangement on body or door of cabinet for producing pressure balance between inner chamber and surroundings of cabinet |
| CN202902742U (en) * | 2012-10-24 | 2013-04-24 | 海尔集团公司 | Balance valve used for opening and closing of door of refrigerator and refrigerator provided with balance valve |
| CN110806054A (en) * | 2019-11-07 | 2020-02-18 | 青岛海尔特种电冰柜有限公司 | Anti-frosting air pressure balancing device and refrigerating device |
| CN211823374U (en) * | 2020-01-10 | 2020-10-30 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing device |
| CN215571524U (en) * | 2020-12-01 | 2022-01-18 | 珠海格力电器股份有限公司 | Air pressure balance structure and refrigerating and freezing device |
-
2020
- 2020-12-01 CN CN202011385803.5A patent/CN112432419A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10203425A1 (en) * | 2002-01-28 | 2003-08-07 | Horst Baehring | Freezer cabinet with pressure equalization has arrangement on body or door of cabinet for producing pressure balance between inner chamber and surroundings of cabinet |
| CN202902742U (en) * | 2012-10-24 | 2013-04-24 | 海尔集团公司 | Balance valve used for opening and closing of door of refrigerator and refrigerator provided with balance valve |
| CN110806054A (en) * | 2019-11-07 | 2020-02-18 | 青岛海尔特种电冰柜有限公司 | Anti-frosting air pressure balancing device and refrigerating device |
| CN211823374U (en) * | 2020-01-10 | 2020-10-30 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing device |
| CN215571524U (en) * | 2020-12-01 | 2022-01-18 | 珠海格力电器股份有限公司 | Air pressure balance structure and refrigerating and freezing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117469894A (en) * | 2023-12-26 | 2024-01-30 | 珠海格力电器股份有限公司 | Air pressure balancing device, low-temperature preservation box and control method thereof |
| CN117469894B (en) * | 2023-12-26 | 2024-03-08 | 珠海格力电器股份有限公司 | Air pressure balancing device, low-temperature preservation box and control method thereof |
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Application publication date: 20210302 |