CN101995142B - Device and method for controlling vacuum degree of vacuum refreshing refrigerator - Google Patents
Device and method for controlling vacuum degree of vacuum refreshing refrigerator Download PDFInfo
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- CN101995142B CN101995142B CN2010105235518A CN201010523551A CN101995142B CN 101995142 B CN101995142 B CN 101995142B CN 2010105235518 A CN2010105235518 A CN 2010105235518A CN 201010523551 A CN201010523551 A CN 201010523551A CN 101995142 B CN101995142 B CN 101995142B
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Abstract
The invention relates to the technical field of refrigerators, in particular to a device and a method for controlling the vacuum degree of a vacuum refreshing refrigerator, which comprises a vacuum refreshing box, a vacuum pump, a pressure switch and a master control board, wherein the vacuum pump is communicated with the vacuum refreshing box, a pressure detection end of the pressure switch is communicated with the vacuum refreshing box, a pressure signal output end of the pressure switch is connected with the master control board, and a control signal output end of the master control board, which controls the action of the vacuum pump according to a pressure signal of the pressure switch, is connected with a signal input end of the vacuum pump electrically. In the control method, the pressure switch is used for detecting the air pressure of the vacuum refreshing box and outputting the pressure signal according to the air pressure to control the action of the vacuum pump. In the invention, the pressure switch is added to control the vacuum degree inside the refreshing box to be kept in a certain range all the time, and the control range is adjustable; moreover, the pressure switch has the advantages of simple structure and low cost and is safe and reliable.
Description
Technical field
The present invention relates to the technical field of refrigerator in the electric equipment, especially relate to a kind of control device and control method thereof of vacuum freshness retaining refrigerator vacuum.
Background technology
The control method of existing vacuum freshness retaining refrigerator vacuum is: after vacuum crisper is closed; Vavuum pump is to its exhaust, and when the force value in the vacuum crisper reached setting value, vavuum pump stopped action; If vacuum crisper is not closed after opening once more, vavuum pump can not move all the time again.The shortcoming of this control method is that vacuum crisper can not be accomplished to seal fully; Can reduce in time with extraneous pressure differential in the vacuum crisper; If client does not open vacuum crisper for a long time; Vacuum in the vacuum crisper can reduce, and fresh-keeping effect obviously descends, and causes Customer Complaint easily.
Summary of the invention
The technical problem that the present invention will solve provide a kind of can be through the vacuum of control in the vacuum crisper, reveal and cause the descend control device of the vacuum freshness retaining refrigerator vacuum that influences the problem of fresh-keeping effect of vacuum to solve because of the vacuum crisper nature that is not opened for a long time.The present invention also provides the control method of the control device of said vacuum freshness retaining refrigerator vacuum.
For solving the problems of the technologies described above, first technical scheme of the present invention is:
A kind of control device of vacuum freshness retaining refrigerator vacuum; Comprise vacuum crisper, the vavuum pump that is communicated with vacuum crisper, pressure switch and master control borad; The pressure detecting end of said pressure switch is communicated with vacuum crisper; The pressure signal output of pressure switch is received master control borad, and the control signal output of controlling the master control borad of vavuum pump action according to the pressure signal of pressure switch is electrically connected with the signal input part of vavuum pump.
Further; Said pressure switch comprises in shell and the chamber that the shell upper end is provided with the passage that is communicated with vacuum crisper, and the shell upper end also is provided with metal bar; The lower end is provided with down metal bar; Be provided with in the chamber being divided into two-part sheet metal up and down, last metal bar and following metal bar external power supply, the external ground connection of sheet metal in the chamber.
Second technical scheme of the present invention is:
The control method of the control device of above-mentioned vacuum freshness retaining refrigerator vacuum is: pressure switch detects the air pressure of vacuum crisper, according to the size of air pressure, and the action of pressure switch output pressure signal controlling vavuum pump.
Further, said pressure switch comprises in shell and the chamber that the shell upper end is provided with the passage that is communicated with vacuum crisper; The shell upper end also is provided with metal bar; The lower end is provided with down metal bar, is provided with in the chamber being divided into two-part sheet metal up and down, last metal bar and following metal bar external power supply in the chamber; The external ground connection of sheet metal is detected and control comprises the following steps:
Step 1: under the default conditions, the metal bar of pressure switch is given the certain pressure of sheet metal;
Step 2: the metal bar of pressure switch and earth terminal are conductings, and master control borad is according to the connection signal of metal bar and earth terminal, and the control vavuum pump begins action;
Step 3: along with the raising of vacuum in the vacuum crisper, sheet metal contacts with metal bar under the air pressure effect, at this moment master control borad) can be according to the Continuity signal of metal bar and earth terminal, the control vavuum pump stops action;
Step 4: As time goes on, the vacuum in the vacuum crisper can slowly descend, and the sheet metal of pressure switch and metal bar break off and move down, and repeating step 2.
The present invention with respect to the beneficial effect of prior art is:
The present invention utilizes the elasticity of pressure switch the inside sheet metal through control device; Under the effect of atmospheric pressure, contact or break off to control panel transmit button signal with two conducting metal probes; Reach the vacuum in the control crisper, this pressure switch construction is simple, and cost is low; Safe and reliable, be highly suitable on the vacuum freshness retaining refrigerator and use.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is the structural representation of the control device of vacuum freshness retaining refrigerator vacuum;
Fig. 2 is the structural representation of pressure switch.
The specific embodiment
Referring to Fig. 1; The control device of vacuum freshness retaining refrigerator vacuum of the present invention; Comprise vacuum crisper 3, the vavuum pump 4 that is communicated with vacuum crisper 3, pressure switch 1 and master control borad 2; The pressure detecting end of pressure switch 1 is communicated with vacuum crisper 3, and the pressure signal output of pressure switch 1 is received master control borad 2, and the control signal output of controlling the master control borad 2 of vavuum pump 4 actions according to the pressure signal of pressure switch 1 is electrically connected with the signal input part of vavuum pump 4.
Among Fig. 2; Pressure switch 1 comprises that shell 12 upper ends are provided with the passage 15 that is communicated with vacuum crisper 3 in shell 12 and the chamber, and shell 12 upper ends also are provided with metal bar 11; The lower end is provided with down metal bar 14; Be provided with in the chamber being divided into two-part sheet metal 13 up and down in the chamber, last metal bar 11 and following metal bar 14 external power supplys, external 5V voltage sheet metal 13 external ground connection.
The control method of the control device of vacuum freshness retaining refrigerator vacuum of the present invention is: utilize pressure switch 1 to detect the air pressure of vacuum crisper 3, according to the size of air pressure, pressure switch 1 output pressure signal controlling vavuum pump 4 moves.
Specifically detect and control as follows:
The first half passage 15 of pressure switch and vacuum crisper 3 inner conductings, by default, metal bar 14 gives sheet metal 13 certain pressure; Be equivalent to pressure switch the first half certain vacuum (for example being set at negative pressure 200mbar) is arranged; This moment, metal bar 14 was conducting with earth terminal, and master control borad 2 makes vavuum pump 4 begin action according to the connection signal of metal bar 14 with earth terminal; Raising along with vacuum in the vacuum crisper 3; Sheet metal 13 contacts (for example being set at 300mbar) with metal bar 11 under the air pressure effect, at this moment master control borad 2 can stop vavuum pump 4 actions according to the Continuity signal of metal bar 11 with earth terminal.
As time goes on, because the reason of sealing, the vacuum in the vacuum crisper 3 can slowly descend; Sheet metal 13 can break off with metal bar 11 and move down; Final and metal bar 14 conductings, master control borad 2 will move vavuum pump 4 according to the Continuity signal of metal bar 14 and earth terminal like this.So circulation is kept within limits the vacuum in the vacuum crisper 3 all the time, guarantees the effect of vacuum freshness retaining.
The present invention improves on the basis of vacuum freshness retaining refrigerator vacuum degree control on the existing market; Control through increasing pressure switch that vacuum is maintained within a certain range all the time in the crisper; This control range can also be regulated, and this pressure switch construction is simple, cost is low, safe and reliable.
Claims (2)
1. the control device of a vacuum freshness retaining refrigerator vacuum; Comprise vacuum crisper (3), the vavuum pump (4) that is communicated with vacuum crisper (3); It is characterized in that: also comprise pressure switch (1) and master control borad (2), the pressure detecting end of said pressure switch (1) is communicated with vacuum crisper (3), and the pressure signal output of pressure switch (1) is received master control borad (2); The control signal output of controlling the master control borad (2) of vavuum pump (4) action according to the pressure signal of pressure switch (1) is electrically connected with the signal input part of vavuum pump (4); Said pressure switch (1) comprises in shell (12) and the chamber that shell (12) upper end is provided with the passage (15) that is communicated with vacuum crisper (3), and shell (12) upper end also is provided with metal bar (11); The lower end is provided with down metal bar (14); Be provided with in the chamber being divided into two-part sheet metal (13) up and down, last metal bar (11) and following metal bar (14) external power supply, the external ground connection of sheet metal (13) in the chamber.
2. the control method of the control device of a vacuum freshness retaining refrigerator vacuum according to claim 1; It is characterized in that: pressure switch (1) detects the air pressure of vacuum crisper (3); According to the size of air pressure, pressure switch (1) output pressure signal controlling vavuum pump (4) action
Detection and control comprise the following steps:
Step 1: under the default conditions, the following metal bar (14) of pressure switch (1) is given the certain pressure of sheet metal (13);
Step 2: the following metal bar (14) of pressure switch (1) is conducting with earth terminal, the connection signal of metal bar (14) and earth terminal under master control borad (2) basis, and control vavuum pump (4) begins action;
Step 3: along with the raising of the interior vacuum of vacuum crisper (3), sheet metal (13) contacts with last metal bar (11) under the air pressure effect, and at this moment master control borad (2) can be according to the Continuity signal of last metal bar (11) with earth terminal, and control vavuum pump (4) stops action;
Step 4: As time goes on, the vacuum in the vacuum crisper (3) can slowly descend, and the sheet metal (13) of pressure switch (1) breaks off with last metal bar (11) and moves down, and repeating step 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105235518A CN101995142B (en) | 2010-10-26 | 2010-10-26 | Device and method for controlling vacuum degree of vacuum refreshing refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105235518A CN101995142B (en) | 2010-10-26 | 2010-10-26 | Device and method for controlling vacuum degree of vacuum refreshing refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN101995142A CN101995142A (en) | 2011-03-30 |
| CN101995142B true CN101995142B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105235518A Active CN101995142B (en) | 2010-10-26 | 2010-10-26 | Device and method for controlling vacuum degree of vacuum refreshing refrigerator |
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| CN (1) | CN101995142B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101919888B1 (en) * | 2012-06-11 | 2018-11-19 | 엘지전자 주식회사 | A vegitable keeping structure of a refrigerator crisper by a light voccum algorithm and the method thereof |
| CN103808095B (en) * | 2012-11-09 | 2017-09-22 | 博西华电器（江苏）有限公司 | method for refrigerator |
| CN103712408B (en) * | 2013-12-31 | 2016-01-13 | 海信容声(广东)冰箱有限公司 | A kind of vacuum fresh-keeping system and control method thereof |
| CN104841070A (en) * | 2015-02-12 | 2015-08-19 | 尤文峰 | Indoor fire control device |
| CN109984565B (en) * | 2018-01-02 | 2021-09-21 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and vacuum reservation fresh-keeping control method thereof |
| CN108443109B (en) * | 2018-02-11 | 2019-12-06 | 海信（山东）冰箱有限公司 | Red wine fresh-keeping device and cold-stored refrigerating plant |
| CN112393513B (en) * | 2019-08-16 | 2022-03-18 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114383352A (en) * | 2020-10-19 | 2022-04-22 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN116772484A (en) * | 2022-03-09 | 2023-09-19 | 青岛海尔电冰箱有限公司 | Vacuum storage device, control method and refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295971Y (en) * | 1997-05-05 | 1998-10-28 | 回世昌 | Vacuum preserving box for electric refrigerator |
| CN1202605A (en) * | 1998-05-26 | 1998-12-23 | 朱有康 | Green vacuum fresh keeping cabinet |
| CN2379762Y (en) * | 1999-07-21 | 2000-05-24 | 陈懋昭 | Automatic vacuum refrigerator |
| CN201897363U (en) * | 2010-10-26 | 2011-07-13 | 海信科龙电器股份有限公司 | Controlling means for vacuum degree of vacuum fresh-keeping refrigerator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102070U (en) * | 1977-01-22 | 1978-08-17 | ||
| JPS5748255Y2 (en) * | 1979-02-13 | 1982-10-22 |
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2010
- 2010-10-26 CN CN2010105235518A patent/CN101995142B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295971Y (en) * | 1997-05-05 | 1998-10-28 | 回世昌 | Vacuum preserving box for electric refrigerator |
| CN1202605A (en) * | 1998-05-26 | 1998-12-23 | 朱有康 | Green vacuum fresh keeping cabinet |
| CN2379762Y (en) * | 1999-07-21 | 2000-05-24 | 陈懋昭 | Automatic vacuum refrigerator |
| CN201897363U (en) * | 2010-10-26 | 2011-07-13 | 海信科龙电器股份有限公司 | Controlling means for vacuum degree of vacuum fresh-keeping refrigerator |
Non-Patent Citations (2)
| Title |
|---|
| JP昭和53-102070U 1978.08.17 |
| JP昭和55-116444U 1980.08.16 |
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| CN101995142A (en) | 2011-03-30 |
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