CN100422670C - Refrigerator - Google Patents
Refrigerator Download PDFInfo
- Publication number
- CN100422670C CN100422670C CNB2004800171071A CN200480017107A CN100422670C CN 100422670 C CN100422670 C CN 100422670C CN B2004800171071 A CNB2004800171071 A CN B2004800171071A CN 200480017107 A CN200480017107 A CN 200480017107A CN 100422670 C CN100422670 C CN 100422670C
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- China
- Prior art keywords
- mentioned
- electric terminal
- terminal portion
- refrigerator
- refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000003507 refrigerant Substances 0.000 claims abstract description 61
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical group CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims description 16
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 14
- 239000001282 iso-butane Substances 0.000 claims description 8
- 235000013847 iso-butane Nutrition 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A refrigerator where a flammable refrigerant has no risk of catching fire and explosion even if it leaks and where a conventional door switch can be used for reduced production cost. The refrigerator using a flammable refrigerant for cooling has a door switch (4) and an electric power control portion (20). The door switch (4) turns an inside light (5) on when a door (21a) is in an open state and turns the light off when the door (21a) is in a closed state. The electric power control portion (20) regulates electric power flowing to the door switch (4) to prevent the flammable refrigerant from igniting.
Description
Technical field
The present invention relates to for example adopt and have the refrigerator that hydrocarbon system or the similar flammable refrigerant that the danger of blast arranged cool off.
Background technology
In recent years, worsen in order not cause earth environment because of the destruction of ozone layer, the refrigerant of refrigerator uses the refrigerant of hydrocarbon system to replace the refrigerant of freon system.But the refrigerant of this hydrocarbon system is flammable, and this refrigerant is if spill because of certain reason from refrigerator inside, when the electric terminal portion of refrigerator inside produces spark, may ignite this refrigerant and explodes.
Thereby traditional refrigerator is in order to prevent the blast of igniting of above-mentioned refrigerant, in the above-mentioned electric terminal of refrigerator outer setting portion, and makes above-mentioned electric terminal portion self have explosion-proof countermeasure (spy opens the 2000-274928 communique).Specifically, the contact portion of electric component and electric wiring or the electric wiring joint portion of two electric wiring combinations are configured in the refrigerator outside, and cover with coating member.
But, in above-mentioned traditional refrigerator, with existing freon be refrigerator at once, above-mentioned electric terminal portion must be arranged on the refrigerator outside, and coating member is set, cause the mould expense of the shape change of refrigerator to rise and the cost increase of the explosion-proof correspondence of above-mentioned electric terminal portion.
Disclosure of an invention
Thereby problem of the present invention provides: even flammable refrigerant is sewed the danger of blast of also not igniting, and can directly adopt the electric component of existing door switch etc., can reduce the refrigerator of manufacturing cost.
In order to solve above-mentioned problem, comprise in the refrigerator of the present invention: refrigerator body; Be arranged in this refrigerator body and adopt the refrigerating circuit of flammable refrigerant; In the electric terminal portion of the internal configurations of above-mentioned refrigerator body,
Above-mentioned electric terminal portion is the electric terminal portion of mechanical type door switch, becomes conducting state under the state of opening of the door of above-mentioned refrigerator body, lights lamp inside the box, and become dissengaged positions under the off status of above-mentioned door, extinguishes lamp inside the box,
Above-mentioned flammable refrigerant is an ethene,
The power of the above-mentioned electric terminal of order input portion is below the above 20W of 0W, even leak under near the state that there is above-mentioned electric terminal portion in above-mentioned refrigerant and this refrigerant from above-mentioned refrigerating circuit, and above-mentioned electric connecting portion generation spark, this refrigerant can not catch fire yet.
Here, above-mentioned electric terminal portion is meant, the part etc. of switching the part of power-on switch and switching on-position may produce the part of spark when the switching of energising.Above-mentioned electric terminal portion is when switching the part of power-on switch, and above-mentioned electric terminal portion for example is contained in the mechanical type door switch, and this mechanical type door switch cooperates the switching of the door of refrigerator, lights or extinguish the lamp inside the box (illuminating lamp) of refrigerator body inside.On the other hand, above-mentioned electric terminal portion is when switching the part of on-position, and above-mentioned electric terminal portion for example is contained in the temperature adjustment knob.This temperature adjustment knob fine adjustment refrigerator body temperature inside.
Above-mentioned flammable refrigerant is an ethene, has the danger of blast.In addition, the control of power is undertaken by variable resistor of for example connecting with above-mentioned electric terminal portion etc.
According to refrigerator of the present invention, control flows to the power of above-mentioned electric terminal portion below 20W, make that being in above-mentioned flammable refrigerant is the degree that ethene can not catch fire, therefore, when the inside of above-mentioned ethene from above-mentioned refrigerator body spills, above-mentioned electric terminal portion switches on when switching, and can prevent the blast of igniting of above-mentioned ethene.That is, power is if surpass 20W, and then above-mentioned flammable refrigerant has the danger of the blast of igniting, even but above-mentioned electric terminal portion is directly exposed under the poorest condition under the ethene, also can prevent catching fire of above-mentioned flammable refrigerant reliably.
In addition, can above-mentioned electric terminal portion be configured in the refrigerator outside as tradition, the electric component that comprises above-mentioned electric terminal portion can directly adopt existing formation and configuration, therefore can reduce manufacturing cost.
Here, above-mentioned mechanical type door switch cooperates the switching of the door of refrigerator, and the lamp inside the box (illuminating lamp) of body interior is lighted or extinguished to refrigerator, and the switch of energising is switched in above-mentioned electric terminal portion.The power control section of control power can be connected with above-mentioned mechanical type door switch and is provided with in addition, or also one embeds above-mentioned mechanical type door switch in advance.
According to the refrigerator of this embodiment, needn't above-mentioned mechanical type door switch be configured in the refrigerator outside as tradition, above-mentioned mechanical type door switch can directly adopt existing formation and configuration, thereby can reduce manufacturing cost.
In addition, above-mentioned mechanical type door switch becomes conducting state under the state of opening of above-mentioned door, and becomes dissengaged positions under the state that closes of above-mentioned door, thereby the electric circuit of door switch can constitute with simple structure.
According to one embodiment of the invention, the power of importing above-mentioned electric terminal portion more than the 5W to 20W.
According to one embodiment of the invention, the power of importing above-mentioned electric terminal portion more than the 10W to 20W.
In addition, refrigerator of the present invention, comprising: refrigerator body; Be arranged in this refrigerator body and adopt the refrigerating circuit of flammable refrigerant; In the electric terminal portion of the internal configurations of above-mentioned refrigerator body,
Above-mentioned electric terminal portion is the electric terminal portion of mechanical type door switch, becomes conducting state under the state of opening of the door of above-mentioned refrigerator body, lights lamp inside the box, and become dissengaged positions under the off status of above-mentioned door, extinguishes lamp inside the box,
Above-mentioned flammable refrigerant is an iso-butane,
The voltage that order is applied to above-mentioned electric terminal portion is below the above 30W of 0W at 100V to the scope of 240V and the power of importing above-mentioned electric terminal portion, even leak under near the state that there is above-mentioned electric terminal portion in above-mentioned refrigerant and this refrigerant from above-mentioned refrigerating circuit, above-mentioned electric connecting portion produces spark, and this refrigerant can not catch fire yet.
Above-mentioned flammable refrigerant is an iso-butane, and control is applied to the voltage of above-mentioned electric terminal portion in the scope of 100V to 240V, and the power of importing above-mentioned electric terminal portion is below 30W.
According to refrigerator of the present invention,, also can prevent catching fire of above-mentioned flammable refrigerant reliably even above-mentioned electric terminal portion is directly exposed under the poorest condition of iso-butane of flammable refrigerant.That is, apply voltage in the scope of 100V to 240V, power is if surpass 30W, and then above-mentioned flammable refrigerant has the danger of the blast of igniting, but because the power that is applied to electric terminal portion below 30W, therefore can prevent catching fire of iso-butane reliably.
According to one embodiment of the invention, the power of importing above-mentioned electric terminal portion more than the 5W to 30W.
According to one embodiment of the invention, the power of importing above-mentioned electric terminal portion more than the 10W to 20W.
The simple declaration of drawing
Fig. 1 is the simple oblique view that an embodiment of refrigerator of the present invention watches from rear side.
Fig. 2 is a wiring diagram.
Fig. 3 is the oblique view of fire test device.
Fig. 4 is the wiring diagram of the electric circuit in the fire test.
Fig. 5 A, 5B are the structure charts of door switch.
Fig. 6 is the key diagram of leakage test.
The most preferred embodiment of invention
Below, describe the present invention in accordance with the embodiments illustrated in detail.
The 1st embodiment
Fig. 1 is the simple oblique view that an embodiment of refrigerator of the present invention watches from rear side.This refrigerator adopts flammable refrigerant to cool off, and possesses: the refrigerator body 21 with door 21a to be opened/closed; The door switch 4 of the internal configurations of this refrigerator body 21 and lamp inside the box (illuminating lamp) 5; Thermostat 3; Compressor 2; 100V power supply 1.
As depicted in figs. 1 and 2, common formation refrigerant circuit 22 (refrigerating circuits) such as the not shown evaporimeter that is provided with in above-mentioned compressor 2 and the above-mentioned refrigerator body 21, condensed device and throttling structure (bulge) cool off above-mentioned refrigerator body 21 inside with above-mentioned flammable refrigerant.The protector 7 that the starter relay 6 of above-mentioned compressor 2 and the starting of auxiliary this compressor 2 cuts off the contact portion of this compressor 2 when flowing through vortex flow is connected.
Above-mentioned refrigerator body 21 internal temperatures of above-mentioned thermostat 3 perception when this internal temperature is high, are connected with the contact portion of above-mentioned thermostat 3, drive above-mentioned compressor 2, cool off above-mentioned refrigerator body 21 inside.
Above-mentioned door switch 4 is mechanical type door switch that lamp inside the box is lighted usefulness, cooperates the switching of above-mentioned door 21a, lights or extinguishes above-mentioned lamp inside the box 5.Specifically, above-mentioned door switch 4 has the 4a of electric terminal portion, is conducting state at the state of opening of the above-mentioned door 21a above-mentioned electric terminal 4a of portion that orders, and lights above-mentioned lamp inside the box 5, at the off status of the above-mentioned door 21a above-mentioned electric terminal 4a of portion that orders is dissengaged positions, extinguishes above-mentioned lamp inside the box 5.
Above-mentioned power control section 20 has variable resistor, connect with the above-mentioned electric terminal 4a of portion of above-mentioned door switch 4, control flows to the power of the above-mentioned electric terminal 4a of portion, leaks near the degree that also this refrigerant is caught fire that there are the above-mentioned electric terminal 4a of portion in above-mentioned refrigerants and this refrigerant even make from above-mentioned refrigerating circuit 22.Specifically, when above-mentioned flammable refrigerant was ethene, the power of the above-mentioned electric terminal 4a of portion of above-mentioned power control section 20 control inputs was below 20W.In addition, though not shown, above-mentioned power control section 20 also can be that one embeds the resistance of above-mentioned door switch 4 in advance.
Refrigerator according to above-mentioned formation, when the concentration of above-mentioned refrigerator body 21 inner above-mentioned flammable refrigerants generation leakages and this flammable refrigerant reaches flammable territory, even above-mentioned door 21a opens, the above-mentioned electric terminal 4a of portion connects into conducting state from dissengaged positions, the blast of also can not igniting of above-mentioned flammable refrigerant, security is good.
The fire test of the above-mentioned door switch of above-mentioned flammable refrigerant then, is described.
Fig. 3 represents fire test device 11, and this fire test device 11 possesses: the cylinder 8 of the acrylic system of the thick 7mm of internal diameter 296mm; Cover the iron plectane 9 of the lower opening portion of this cylinder 8; Cover the thin type cover plate 10 of the top peristome of above-mentioned cylinder 8.This cover plate 10 is configured to the structure of breakage when the above-mentioned flammable refrigerant of enclosing above-mentioned cylinder 8 inside catches fire.
Then, as shown in Figure 4, in above-mentioned fire test device 11, enclose above-mentioned flammable refrigerant and open above-mentioned door switch 4.The 4a of electric terminal portion of this door switch 4 and 100V power supply 1, ohmic load 12 and the galvanometer 13 common electric circuits that constitute closed loop.Above-mentioned ohmic load 12 is to the flow through electric current of the setting set of the above-mentioned electric terminal 4a of portion.Above-mentioned galvanometer 13 detects the current value that flows through the above-mentioned electric terminal 4a of portion.
Then, make above-mentioned door switch 4 actions, produce spark, implement the fire test of above-mentioned flammable refrigerant at the above-mentioned electric terminal 4a of portion.At this moment, in the time of current value change in the above-mentioned ohmic load 12, the current value during by galvanometer 13 validation tests.This result of the test is shown in following table 1.In addition, this experimental condition is according to the IEC60079-15 specification of international benchmark, and specifically, the ethylene gas concentration with 6.5% ± 0.5% is carried out the test gas replacement for 3 times.
[table 1]
Can understand that from above-mentioned table 1 when above-mentioned flammable refrigerant was ethene, the power of importing the above-mentioned electric terminal 4a of portion was when 20W is following, above-mentioned flammable refrigerant does not ignite, be safe, the power of importing the above-mentioned electric terminal 4a of portion is if surpass 20W, and then above-mentioned flammable refrigerant has the danger of igniting.
Here, the right view of the front view of Fig. 5 A, Fig. 5 B is represented an example of above-mentioned door switch 4.This door switch 4 possesses rib 14 and the not shown terminal 15 that is connected with lamp inside the box, shortens this rib 14 by pushing, and not shown above-mentioned electric terminal portion is cut off, above-mentioned lamp inside the box extinguishes, make its elongation by unclamping above-mentioned rib 14, connect above-mentioned electric terminal portion, light above-mentioned lamp inside the box.In addition, above-mentioned electric terminal portion is covered by the resinous self-box of above-mentioned door switch 4, forms the structure that above-mentioned ethylene gas is difficult to invade.But, in the above-mentioned fire test, in order further to set the poorest condition, take off above-mentioned self-box, above-mentioned electric terminal portion is in the atmospheric exposure state under the above-mentioned ethylene gas, under voltage 100V, flow into above-mentioned electric terminal portion and test, can confirm that above-mentioned ethylene gas can not ignite, and guarantees security with the power 20W of electric current 0.2A.
In addition, the door switch 4 that adopts in the above-mentioned fire test is structures that above-mentioned ethylene gas is invaded above-mentioned electric terminal portion, is the parts that become defective grade in the leakage test of IEC60079-15 specification of international benchmark, and door switch 4 shown in Figure 5 becomes defective.
Here, Fig. 6 represents the summary of sealing test.That is, the electric component (door switch) 17 of 25 ℃ of placements of room temperature, the beaker 16 that immerses the hot water 18 be equipped with 50 ℃ 1 minute apart from the dark 25mm of water surface place.This moment is if produce bubble, and is then defective.
The 2nd embodiment
Then, when above-mentioned flammable refrigerant adopted iso-butane, the result of the fire test of above-mentioned door switch was shown in following table 2.
That is, this experimental condition is with based on the implementing from primary standard of the JEMA of the IEC60079-15 specification of international benchmark, and specifically, 3.2% ± 0.5% iso-butane (R600a) gas concentration test gas is changed 3 times and carried out.In addition, other conditions are identical with above-mentioned the 1st embodiment, omit its explanation.
[table 2]
Can understand from above-mentioned table 2, when above-mentioned flammable refrigerant is iso-butane, the voltage that is applied to the above-mentioned electric terminal 4a of portion 100V to the scope of 240V and the power of importing the above-mentioned electric terminal 4a of portion when 30W is following, above-mentioned flammable refrigerant can not ignite, be safe, and the voltage that is applied to the above-mentioned electric terminal 4a of portion surpasses 30W in the scope of 100V to 240V if import the power of the above-mentioned electric terminal 4a of portion, and then above-mentioned flammable refrigerant has the danger of igniting.
Claims (6)
1. refrigerator, comprising: refrigerator body; Be arranged in this refrigerator body and adopt the refrigerating circuit of flammable refrigerant; In the electric terminal portion of the internal configurations of above-mentioned refrigerator body,
Above-mentioned electric terminal portion is the electric terminal portion of mechanical type door switch, becomes conducting state under the state of opening of the door of above-mentioned refrigerator body, lights lamp inside the box, and become dissengaged positions under the off status of above-mentioned door, extinguishes lamp inside the box,
Above-mentioned flammable refrigerant is an ethene,
The power of the above-mentioned electric terminal of order input portion is below the above 20W of 0W, even leak under near the state that there is above-mentioned electric terminal portion in above-mentioned refrigerant and this refrigerant from above-mentioned refrigerating circuit, and above-mentioned electric connecting portion generation spark, this refrigerant can not catch fire yet.
2. the described refrigerator of claim 1, wherein, the power of importing above-mentioned electric terminal portion more than the 5W to 20W.
3. the described refrigerator of claim 2, wherein, the power of importing above-mentioned electric terminal portion more than the 10W to 20W.
4. refrigerator, comprising: refrigerator body; Be arranged in this refrigerator body and adopt the refrigerating circuit of flammable refrigerant; In the electric terminal portion of the internal configurations of above-mentioned refrigerator body,
Above-mentioned electric terminal portion is the electric terminal portion of mechanical type door switch, becomes conducting state under the state of opening of the door of above-mentioned refrigerator body, lights lamp inside the box, and become dissengaged positions under the off status of above-mentioned door, extinguishes lamp inside the box,
Above-mentioned flammable refrigerant is an iso-butane,
The voltage that order is applied to above-mentioned electric terminal portion is below the above 30W of 0W at 100V to the scope of 240V and the power of importing above-mentioned electric terminal portion, even leak under near the state that there is above-mentioned electric terminal portion in above-mentioned refrigerant and this refrigerant from above-mentioned refrigerating circuit, above-mentioned electric connecting portion produces spark, and this refrigerant can not catch fire yet.
5. the described refrigerator of claim 4, wherein, the power of importing above-mentioned electric terminal portion more than the 5W to 30W.
6. the described refrigerator of claim 5, wherein, the power of importing above-mentioned electric terminal portion more than the 10W to 20W.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003174753 | 2003-06-19 | ||
| JP174753/2003 | 2003-06-19 | ||
| JP423500/2003 | 2003-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1809719A CN1809719A (en) | 2006-07-26 |
| CN100422670C true CN100422670C (en) | 2008-10-01 |
Family
ID=36840953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800171071A Expired - Lifetime CN100422670C (en) | 2003-06-19 | 2004-06-16 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100422670C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2476490B1 (en) * | 2007-11-06 | 2016-04-06 | Panasonic Corporation | Refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123904A (en) * | 1994-05-20 | 1996-06-05 | 扎纳西公司 | Refrigeration apparatus with explosion-proof switch |
| CN1125837A (en) * | 1994-05-20 | 1996-07-03 | 扎纳西公司 | Refrigeration apparatus with explosion-proof thermostat |
| JP2000023775A (en) * | 1998-07-10 | 2000-01-25 | Kokuyo Co Ltd | Housing type chair |
| JP2000230775A (en) * | 1999-02-09 | 2000-08-22 | Matsushita Refrig Co Ltd | Refrigerator |
| JP2001165552A (en) * | 1999-12-08 | 2001-06-22 | Mitsubishi Electric Corp | Refrigerator |
-
2004
- 2004-06-16 CN CNB2004800171071A patent/CN100422670C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123904A (en) * | 1994-05-20 | 1996-06-05 | 扎纳西公司 | Refrigeration apparatus with explosion-proof switch |
| CN1125837A (en) * | 1994-05-20 | 1996-07-03 | 扎纳西公司 | Refrigeration apparatus with explosion-proof thermostat |
| JP2000023775A (en) * | 1998-07-10 | 2000-01-25 | Kokuyo Co Ltd | Housing type chair |
| JP2000230775A (en) * | 1999-02-09 | 2000-08-22 | Matsushita Refrig Co Ltd | Refrigerator |
| JP2001165552A (en) * | 1999-12-08 | 2001-06-22 | Mitsubishi Electric Corp | Refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1809719A (en) | 2006-07-26 |
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