System and method for balancing internal and external air pressure of refrigerator
Technical Field
The invention relates to the technical field of refrigerators, in particular to a system and a method for balancing internal and external air pressure of a refrigerator.
Background
A refrigerator is a refrigerating apparatus for maintaining a constant low temperature, and is also a consumer product for maintaining food or other articles in a constant low temperature state. The cabinet or the box is provided with a compressor, an ice maker for freezing and a storage box with a refrigerating device. The volume of the household refrigerator is usually 20-500 liters.
However, the refrigerator leads to the inside air conditioning of refrigerator to consume because of user's switching refrigerator cabinet door in the in-process that uses, and the back is closed to the refrigerator cabinet door, because of inside temperature is higher than the settlement temperature, the refrigerator can reach the settlement temperature again through the cooling, and this process leads to the refrigerator inside negative pressure state because of the temperature variation air appears to comparatively labouring when the user opens the cabinet door once more, greatly reduced user's use experience.
Disclosure of Invention
Solves the technical problem
Aiming at the defects in the prior art, the invention provides a system and a method for balancing internal and external air pressure of a refrigerator, which solve the problems that in the using process of the refrigerator, the cold air in the refrigerator is consumed due to the opening and closing of a refrigerator door by a user, after a refrigerator door is closed, the refrigerator can reach the set temperature again through temperature reduction due to the fact that the internal temperature is higher than the set temperature, and the process causes negative pressure state of the air in the refrigerator due to temperature change, so that the user is more labourious when the refrigerator door is opened again.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a system and a method for balancing internal and external air pressure of a refrigerator comprise an air chamber, wherein an installation piece is fixedly connected with the surface of the air chamber at equal intervals, a screw is inserted in the surface of the installation piece through a bearing in a penetrating manner, an air outlet valve is hinged to the top surface of the air chamber, a flow guide pipeline is sleeved at the top end of the air chamber, a control chip is installed on the bottom surface of the air chamber, an electric wire is installed on one side of the control chip, a fixing frame is fixedly connected with the bottom surface of the air chamber, a motor is installed inside the fixing frame, the control chip is connected with the motor through a connecting electric property with the electric wire, a transmission rod is fixedly connected with the output end of the motor, the top end of the transmission rod penetrates through the air chamber through the bearing and extends to the inside of the air chamber, a piston is sleeved on the surface of the transmission rod through a thread, a sliding groove is formed in the air chamber, and is connected with the inside of the air chamber in a sliding manner, the surface of gas storehouse articulates there is the admission valve, the cover is equipped with torque spring on admission valve and the articulated shaft of gas storehouse looks, torque spring's both ends are connected with gas storehouse, admission valve respectively.
Furthermore, a torsion spring is sleeved on a hinged shaft of the air outlet valve and the air bin, and two ends of the torsion spring are respectively connected with the air bin and the air outlet valve.
Furthermore, the surface of the air outlet valve is glued with a rubber ring, and the top surface is in an inwards concave arc shape.
Furthermore, the control chip has the following operating programs deployed therein for controlling the motor, including:
a balancing module: the motor control system is used for sending out a command to control the motor to execute a command program;
the air pressure monitoring module: the air pressure detection device is used for detecting the air pressure inside and outside the cabin and providing judgment basis for the judgment module;
a judging module: the air pressure monitoring module is used for judging the air pressure inside and outside the cabin in the air pressure monitoring module;
a triggering module: the air pressure balance system is used for starting the air pressure balance system and is used as a control end of the air pressure balance system, when the air pressure in the cabin is lower than the air pressure outside the cabin, the air pressure balance system is started, and when the air pressure in the cabin is higher than the air pressure outside the cabin at equal intervals, the air pressure balance system is not started;
the air pressure balance system: the air pressure control device is used for controlling the air pressure inside and outside the refrigerator cabin body and ensuring that the air pressure inside and outside the refrigerator cabin body is consistent.
Furthermore, a program switching module is mounted in the balancing module and used for switching two modes of operation of the balancing module.
Furthermore, two different trigger programs are loaded in the trigger module, and the programs are synchronously converted with the program switching module through electrical property.
Furthermore, the program switching module carried in the balancing module performs switching setting according to the use target habit.
A method for balancing internal and external air pressure of a refrigerator comprises the following steps:
s1: acquiring an outdoor air pressure value of the refrigerator, writing the outdoor air pressure value into a control balance chip, and determining a balance chip operation triggering condition according to the outdoor air pressure;
s2: acquiring real-time air pressure data in the cabin, and completing the acquisition by an air pressure monitoring module;
s3: and comparing the data obtained in the S1 and the S2 to judge the air pressure inside and outside the cabin:
s4: if the cabin internal air pressure is less than the cabin external air pressure according to the judgment result obtained in the step S3, triggering and starting an air pressure balancing system to balance and adjust the cabin internal air pressure;
s5: if the judgment result obtained in the S3 shows that the pressure in the cabin is larger than or equal to the pressure outside the cabin, the refrigeration system of the refrigerator is started to maintain the temperature in the cabin;
s6: setting the single in-cabin maintenance time according to the refrigerator power, and simultaneously setting the single in-cabin maintenance trigger interval period;
s7: and monitoring to obtain real-time air pressure in the cabin, performing frequency period comparison, and enabling the air pressure balance system to automatically enter a dormant state and not to be triggered when the air pressure in the cabin is larger than or equal to the air pressure outside the cabin.
Further, in step S7, the frequency period is set to thirty seconds.
Further, the ideal gas state equation is calculated as follows:
pV=nRT
in the formula: p is gas pressure;
v is the gas volume;
n is the mass of the object;
r is a proportionality coefficient;
t is the system temperature.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. the invention provides an intelligent air pressure balancing means for the refrigerator through the structure, so that the situation that the refrigerator door is opened and labored due to negative pressure in the refrigerator caused by cold air loss and closed operation of the refrigerator can be avoided in the process that a user opens and closes the refrigerator door by using the refrigerator.
2. The invention can avoid the cold air loss caused by the balance of the air pressure inside and outside the refrigerator to a certain degree through the structure, thereby bringing a certain energy-saving effect to the refrigerator.
3. The intelligent air pressure balancing means has two operation modes, can be used for normally-opened refrigerators and unusual refrigerators, ensures that the air pressure balancing system operates more stably and adaptively in the open state, and prolongs the service life of the system.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view showing a system for balancing internal and external air pressures in a refrigerator;
FIG. 2 is a schematic view of the present invention in an exploded state;
FIG. 3 is a schematic view of an independent structure of a rubber ring according to the present invention;
FIG. 4 is a schematic bottom view of the present invention;
FIG. 5 is an isolated block diagram of the gas transmission components of the present invention;
FIG. 6 is a schematic diagram of an operation procedure of the control chip according to the present invention;
FIG. 7 is a schematic diagram of a circuit structure of a control chip according to the present invention;
fig. 8 is a structural view of a method for balancing internal and external air pressures of a refrigerator;
the reference numerals in the drawings denote: 1. a gas bin; 2. mounting a sheet; 3. a screw; 4. an air outlet valve; 5. a rubber ring; 6. a diversion pipeline; 7. a control chip; 8. an electric wire; 9. a fixed mount; 10. a motor; 11. a transmission rod; 12. a piston; 13. an intake valve; a1, a balancing module; a2, program switching module; a3, an air pressure monitoring module; a4, a judgment module; a5, a trigger module; a6, air pressure balancing system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The system and the method for balancing internal and external air pressure for the refrigerator of the embodiment are shown in fig. 1, and comprise an air chamber 1, wherein the surface of the air chamber 1 is fixedly connected with mounting pieces 2 at equal intervals, screws 3 are inserted through the surfaces of the mounting pieces 2 through bearings, the top surface of the air chamber 1 is hinged with an air outlet valve 4, the top end of the air chamber 1 is sleeved with a flow guide pipeline 6, the bottom surface of the air chamber 1 is provided with a control chip 7, one side of the control chip 7 is provided with an electric wire 8, the bottom surface of the air chamber 1 is fixedly connected with a fixing frame 9, the fixing frame 9 is internally provided with a motor 10, the control chip 7 and the electric wire 8 are electrically connected with the motor 10, the output end of the motor 10 is fixedly connected with a transmission rod 11, the top end of the transmission rod 11 penetrates through the air chamber 1 through the bearings and extends into the air chamber 1, the surface of the transmission rod 11 is sleeved with a piston 12 through threads, and the air chamber 1 is internally provided with a chute, the transmission rod 11 is connected inside the gas cabin 1 in a sliding mode through a sliding groove formed in the gas cabin 1, an air inlet valve 13 is hinged to the surface of the gas cabin 1, a torsion spring is sleeved on a hinged shaft of the air inlet valve 13, which is hinged to the gas cabin 1, and two ends of the torsion spring are connected with the gas cabin 1 and the air inlet valve 13 respectively.
When the air pressure balance device is used in the embodiment, a user can control the motor 10 to start and stop through the control chip 7, when the motor 10 is started, the transmission rod 11 connected to the output end of the motor 10 rotates to drive the piston 12 to move in the air bin 1 through the thread effect, so that the air in the air bin 1 is extruded to push the air outlet valve 4 open due to the movement of the piston 12, and the air is introduced into the guide pipeline 6 and then enters the refrigerator from the inside of the guide pipeline 6, thereby achieving the purpose of air pressure balance;
wherein the mounting plate 2 and the screw 3 are used to fix the device inside the refrigerator.
As shown in fig. 1, a torsion spring is sleeved on a hinge shaft of the air outlet valve 4 hinged to the air bin 1, and two ends of the torsion spring are respectively connected with the air bin 1 and the air outlet valve 4.
This structure makes when the device shut down the back, and air outlet valve 4 can reset through torsion spring's effort and carry out the shutoff to the open-top of gas storehouse 1 to air outlet valve 4 not only resets through gravity in the use, provides the guarantee for air outlet valve 4's normal movement track.
As shown in fig. 3, the surface of the air outlet valve 4 is glued with a rubber ring 5, and the top surface of the air outlet valve is in an inward concave arc shape.
This part has brought better airtight effect for gas outlet valve 4, prevents that the inside gas of gas outlet valve 4 from appearing revealing the condition emergence in the flow direction water conservancy diversion pipeline 6 under the device unoperated state.
The control chip 7 is specifically a barometric sensor chip, and its model number is DSH 553.
Example 2
As shown in fig. 6, the control chip 7 has the following operating programs deployed therein for controlling the motor 10, including:
balancing module a 1: for issuing commands to control the motor 10 to execute the command program;
air pressure monitoring module a 3: the air pressure detection device is used for detecting the air pressure inside and outside the cabin and providing judgment basis for the judgment module A4;
determination module a 4: used for judging the pressure inside and outside the cabin in the air pressure monitoring module A3;
trigger module a 5: the air pressure balancing system A6 is used as a control end of the air pressure balancing system A6, when the air pressure in the cabin is lower than the air pressure outside the cabin, the air pressure balancing system A6 is started, and when the air pressure in the cabin is higher than the air pressure outside the cabin at equal intervals, the air pressure balancing system A6 is not started;
air pressure balancing system a 6: the air pressure control device is used for controlling the air pressure inside and outside the refrigerator cabin body and ensuring that the air pressure inside and outside the refrigerator cabin body is consistent.
As shown in fig. 6, the balancing module a1 is loaded with a program switching module a2 for switching two modes of operation of the balancing module a 1.
As shown in fig. 6, two different trigger programs are loaded in the trigger module a5, and the programs are electrically switched in synchronization with the program switching module a 2.
As shown in fig. 6, the program switching module a2 installed in the balancing module a1 switches settings according to the usage target habit.
When this embodiment uses, this partial structure uses as the inside operation procedure that carries on of chip, opens the refrigerator when the user does not often, and this procedure will be in the instant trigger that the user opened the refrigerator cabinet door, balances the atmospheric pressure in the refrigerator, and when the refrigerator is commonly used to the user, this operation procedure is in the functional state of operation always, so set up and make the refrigerator when not frequently using, through the better article in the refrigerator of having preserved of atmospheric pressure, provide convenience when opening the refrigerator through this setting for the user often.
Example 3
A method for balancing internal and external air pressure of a refrigerator comprises the following steps:
s1: acquiring an outdoor air pressure value of the refrigerator, writing the outdoor air pressure value into a control balance chip, and determining a balance chip operation triggering condition according to the outdoor air pressure;
s2: acquiring real-time air pressure data in the cabin, and completing the acquisition by an air pressure monitoring module A3;
s3: and (4) comparing the data obtained in S1 and S2 to judge the air pressure inside and outside the cabin:
s4: if the comparison result in the S3 shows that the cabin air pressure is less than the cabin outer air pressure, the air pressure balancing system is triggered to start, and the cabin air pressure is balanced and adjusted;
s5: if the compared judgment result in the S3 is that the pressure in the cabin is more than or equal to the pressure outside the cabin, the refrigeration system of the refrigerator is started to maintain the temperature in the cabin;
s6: setting the single in-cabin maintenance time according to the refrigerator power, and simultaneously setting the single in-cabin maintenance trigger interval period;
s7: and monitoring to obtain real-time air pressure in the cabin, performing frequency period comparison, and enabling the air pressure balance system to automatically enter a dormant state and not to be triggered when the air pressure in the cabin is larger than or equal to the air pressure outside the cabin.
As shown in fig. 8, the frequency period is set to thirty seconds in step S7.
Through the arrangement, the situation that a user frequently opens the refrigerator cabinet in a short time to cause the system to be frequently triggered to operate can be avoided, so that the power consumption of the system is saved, the generation of unnecessary operation times of the system is also avoided, and the purpose of prolonging the service life of the system is achieved.
As shown in fig. 8, the ideal gas state equation is calculated as follows:
pV=nRT
in the formula: p is gas pressure;
v is the gas volume;
n is the mass of the object;
r is a proportionality coefficient;
t is the system temperature.
As shown in fig. 7, the following operation modes are mounted inside the control chip 7, including T1, T2, T3, and T4, wherein: t1 is a circuit power supply of the control chip 7; t2 is a data recording board of the control chip 7; t3 is the continuous operation program of the control chip 7; t4 is the dot-and-dash trigger running program of the control chip 7.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.