CN101382130B

CN101382130B - Air pump

Info

Publication number: CN101382130B
Application number: CN200810130869.2A
Authority: CN
Inventors: 吉田英树; 绀野厚; 武田吉秋; 佐藤富义
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Appliances Inc
Priority date: 2007-09-07
Filing date: 2008-08-19
Publication date: 2015-02-25
Anticipated expiration: 2028-08-19
Also published as: JP2009062933A; TWI391563B; CN101382130A; KR20090026044A; KR100977343B1; TW200923210A; JP5094292B2

Abstract

The invention provides an air pump which has little vibration and vibration sound, or can prevent a contact of an air pressure detecting switch sucking and exhausting air from vibrating. The air pump adopts the following proposal that a pump chamber formed by a membrane (A) is made on a crank-shaped fixed base made of metal and provided with an output shaft of an electric motor in an orthogonal mode, the membrane (A) is vibrated by the rotation of an eccentric cam arranged on the output shaft of the electric motor, and the air pumps sucks and exhausts air in the pump chamber; or the membrane part of the membrane (A) is provided with an annular thick wall part, and vibration of the membrane produced due to change of pressure of the air is inhibited by a thick wall part with larger inertial mass; or the upper part of a check valve at an air suction port side forms an air chamber, the air pump is provided with a membrane (B) movable due to pressure change of the air chamber, and the membrane is operable to detect a switch.

Description

Air pump

Technical field

The present invention relates to the air pump air in seal container being carried out to suction and discharge.

Background technique

As the prior art of air pump of the present invention, No. 2003-286963, Japanese Unexamined Patent Publication (patent documentation 1) can be enumerated.

The air pump of patent documentation 1, driving source uses motor, if and the cam being configured to the cylindrical shape be arranged on the output shaft of motor rotates, the then structure that moves up and down of cam periphery cylinder and barrier film fixed thereon, make the air pressure change in the pump chamber that formed by barrier film, repeat suction and discharge with the opening and closing of two safety check being arranged on pump chamber top, show a mode of air pump.

The air pump of above-mentioned prior art to form a line configuration due to motor, cam part and the pump chamber that formed by barrier film, therefore, overall elongated, in addition, if the position of fastening foot when considering assembling product and shape etc., then can not keep overall shape balance, unfavorable in the noise vibrated and caused by vibration.

In addition, the small size air air pump that market is sold a greater part of, become the shape that pump chamber that motor and barrier film formed is orthogonal, and the base installing constituent parts is plastic article, therefore, not easily guarantee overall intensity and comprise the precision of distortion in environment etc.And with regard to the pumping section external frame of small-sized air pump, resin is in the majority, be the occasion of plastic article installing its base, the eigentone self had due to each material is close, thus easily vibrates, and sometimes exists and causes vibrating excessive danger because of resonance.

Be fixed on the eccentric cam on the output shaft of motor; the cutting product of usual use brass material or zine pressure casting; usual basic shape is pole shape, and one end has the axis hole of the output shaft being pressed into above-mentioned motor, and the other end has the supporting axle of press-in ball bearing.Above-mentioned axis hole and supporting axle are not coaxial, but depart from a certain amount of, are determined the size of the amplitude of barrier film by this bias.

In the eccentric cam of above-mentioned shape, ball bearing is pressed into supporting axle, and at ball bearing outer diameter part press-in moveable arm when making motor rotate, the barrier film be fixed on moveable arm vibrates, and carries out suction and discharge to the air in the pump chamber formed by barrier film.

Carrying out the occasion of suction and discharge to the air in pump chamber, when discharging air (exhaust) in pressurization from pump chamber, to be pushed direction stressed on edge by the air compressed in pump chamber for barrier film.In addition, when attracting air making to be in negative pressure state in pump chamber, barrier film is stressed along tension direction by the air reduced pressure in pump chamber.No matter be any occasion, when suction and discharge, barrier film is all stressed, and this power is delivered to the barrier film cover etc. that the output shaft of motor and barrier film periphery are installed discontinuously, therefore, becomes the reason of the larger vibration of generation.

This vibration strengthens when carrying out the rotation being assembled with air pump in product, becomes the vebrato that the sense of hearing can be distinguished, impairs the quality of product.

In order to relax this vibration, in order to offset from the power suffered by barrier film, be necessary to keep balance.Under normal conditions, adopt and the axis hole of eccentric cam illustrated is above staggered from external diameter center and is inclined load, offset with the weight of eccentric cam self and keep the method for balance.

Have the eccentric cam of above function, complex-shaped, machining is very difficult.Therefore, need a lot of process time, there is the possibility of the parts becoming high price terrifically.

In the occasion of air pump, be not limited to known case, noise becomes problem.

Owing to making barrier film vibration at high speed, safety check also repeats on-off action thereupon, and the air pressure thus in pump chamber also fluctuates, and this fluctuation produces vebrato at the membranous part of barrier film, produces the outflow sound of air in the safety check portion of exhaust side.

Improve one's methods although do not record in known case, cover sealing entirety at the air pump etc. of market sale by framework and externally spill with noise-proofing.In this occasion, although can obtain the effect of interdicting noise, entirety becomes excessive.Therefore, can not load in small sized product.

Actual conditions are, the most of air pump comprising the market sale of known case does not carry the switch detecting air pressure, and cannot regulate the air pressure in the seal container that is arranged on pump, thus ease of use is bad.

In addition, carrying the switch of air pressure detecting suction and discharge, when regulating the air pressure in the seal container separately established, operating switch be the air pressure of fluctuation.The contact of switch is before by action, and the contact of contact becomes delicate.Now, if air pressure fluctuation, then produce the flutter phenomenon of contact, cause bringing greater impact the durability of switch and testing precision.

Summary of the invention

The object of this invention is to provide a kind of air pump achieving the contact bounce vibrating the air pressure detecting switch alleviating, reduce sound equipment or prevent detection suction and discharge.

In order to solve the problem, make the output shaft configuring motor on the metal fixed base being formed as crank-like in an orthogonal manner and the pump chamber formed by barrier film (A), above-mentioned barrier film (A) is vibrated by the rotation of the eccentric cam be installed on the output shaft of motor, the air of said pump indoor is carried out to the air pump of suction and discharge.

The preferred embodiments of the present invention are as follows:

(1) heavy section being provided with ring-type at the membranous part of barrier film (A) is made, the structure that the heavy section that the vibration of membrane inertial mass pressure oscillation because of air produced is larger suppresses.

(2) eccentric cam is plastic article, has cylindric open pore, install the balace weight (hammer) of any weight at this open pore in its periphery.Balace weight can make random lengths by carrying out machining with such as stainless drawing material to end face.

(3) suction and exhaust ports is set on pump chamber, is provided separately safety check, the dampening chamber with exhaust port is set on the top of the safety check of exhaust side, the filter with vent ability is set on above-mentioned safety check.

(4) air chamber is formed at the top of the safety check in intakeport side, arranges the barrier film (B) movable because of the pressure oscillation of air chamber, can operation detection switch with this barrier film.

(5) nozzle be communicated with air chamber is set, extra heavy pipe is inserted in nozzle periphery, link with the seal container separately established, nozzle inside diameter portion comprises above-mentioned air chamber and is divided into two parts, one side becomes the upper room for operation detection switch, and the opposing party becomes lower room and arrives pump chamber by means of intakeport.With above-mentioned on the front end of nozzle that is connected, room insert suction pipe, through above-mentioned extra heavy pipe, front end is outstanding in above-mentioned seal container.

Following effect can be obtained according to the present invention.

By using the fixed base of metal crank shape, component parts just can be made compact with simple shape.In addition, owing to being metal, thus can guarantee overall rigidity, the Yin Wendu in environment and the dimensional changes that causes is also little thus can guarantee precision.Further, the fastening foot of the assembling to product also can be formed simply.Be resinous occasion at pumping section external frame, the eigentone self had due to each material is different, therefore, easily absorbs or offsets vibration, thus vibration can be made little.

Owing to making, cylindric open pore is set on the eccentric cam rotated, inserts the structure of balace weight (hammer) at this opening portion, thus balace weight can be made arbitrary size (length, weight), spin balancing can be kept simply.In addition, balace weight, owing to arranging with eccentric cam split, therefore, can make easy processing and the parts of cheapness.

Due to eccentric cam is made plastic article, thus easily can form the patchhole of the output shaft of motor and insert the shape of the supporting axle of ball bearing and then the open pore of above-mentioned cylindrical shape etc., thus cheap parts can be made.

Owing to arranging the heavy section of ring-type at the membranous part of barrier film, while the area reducing membranous part entirety, for vibration, resonance, the rigidity of the heavy section of ring-type and inertial mass is utilized to make barrier film be kept for the elasticity of the softness changing amplitude, even if the fluctuation being subject to air also can suppress the abnormal vibrations of barrier film, the vebrato because causing every vibration of membrane can be alleviated.

Due in exhaust side, on the top of safety check, dampening chamber is set, inside possesses the filter with vent ability, thus filter prevents the sympathetic response in the damping interior space, and become the resistance of air circulation, thus, the fluctuation of air during buffering exhaust, thus the vebrato produced from safety check can be alleviated.

Owing to becoming two-part by air chamber with the nozzle inside diameter part that it is communicated with, the room of the side of operation detection switch is communicated with the seal container separately established, thus the air pressure of operation detection switch is tentatively by supply in above-mentioned seal container, the fluctuation of air cushioned by the larger spatial volume in seal container, thus can prevent the vibration of the contact of detecting switch.

Accompanying drawing explanation

Fig. 1 is the plan view representing embodiments of the invention.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the plan view of fixed base 1 of the present invention.

Fig. 4 is the front view of eccentric cam 3 of the present invention.

Fig. 5 is the B-B sectional view of Fig. 4.

Fig. 6 is the front view of moveable arm 6 of the present invention.

Fig. 7 is the C-C sectional view of Fig. 6.

Fig. 8 is the sectional view of barrier film of the present invention (A) 7.

Fig. 9 is the sectional view of fixed plate of the present invention.

Figure 10 is the plan view of barrier film cover 9 of the present invention.

Figure 11 is the D-D sectional view of Figure 10.

Figure 12 is the plan view of nozzle base 14 of the present invention.

Figure 13 is the E-E sectional view of Figure 12.

Figure 14 is the plan view of switch cover 15 of the present invention.

Figure 15 is the F-F sectional view of Figure 14.

Figure 16 is the sectional view of barrier film of the present invention (B) 16.

Figure 17 is the schematic diagram of detecting switch 19 of the present invention.

Figure 18 is the plan view of switch cover 20 of the present invention.

Figure 19 is the G-G sectional view of Figure 18.

Figure 20 is the front view of the refrigerator main body of one embodiment of the present invention.

Figure 21 is the longitudinal sectional view of the refrigerator main body of Figure 20.

Figure 22 is the front view of the refrigerator main body of Figure 20.

Figure 23 is the front view of the cold storage room part of the refrigerator main body of Figure 20.

Figure 24 is the plan view of the lowermost space segment of the cold storage room of Figure 23.

Figure 25 is the sectional block diagram of the lowermost space segment of the cold storage room of Figure 23.

Figure 26 is the front view of the backplate of the cold storage room of Figure 23.

Figure 27 is the longitudinal sectional view near the room of the cold storage room of Figure 23.

Figure 28 is the stereogram of the room of the cold storage room of Figure 23.

Figure 29 is the sectional block diagram of the external frame of the room of Figure 25.

In figure:

1-fixed base, 1a-datum hole, 1b-through hole, 2-motor, 3-eccentric cam, 3a-axis hole, 3b-back shaft, 3c-open pore, 4-balace weight, 5-ball bearing, 6-moveable arm, 6a-seating plane, 6b-bearing hole, 6c-support face, 6d-joint-cutting, 7-barrier film (A), 7a-membranous part, the heavy section of 7b-ring-type, 7c-sealing flange, 8-fixed plate, 8a-bearing surface, 9-barrier film cover, 9a-intakeport, 9b-relief opening, 9c-mounting hole, 9d-air passing hole, 9e-bead, 9f-fixed groove, 10-pump chamber, 11, 12-safety check, 13-filter, 14-nozzle base, 14a-spray nozzle part, 14b-nozzle of small diameter portion, 14c-dampening chamber, 14d-exhaust port, 14e-opening supports face, 14f-air chamber, the upper room of 14g-, room under 14h-, 15-switch cover, 15a-fixed groove (B), 15b-is fitted together to pawl (A), 15c-is fitted together to pawl (B), 16-barrier film (B), 16a-jut, 16b-sealing flange (B), 16c-concave surface, 17-clockwork spring support, 18-regulates clockwork spring, 19-detecting switch, 19a-operating button, 19b-terminal part, 20-switch cover, 20a-is fitted together to difference of height, 21-tubule, 22-fixed tube, 23-extra heavy pipe, 24-protective cover, 25-seal container.

Embodiment

About embodiments of the invention, according to Fig. 1 ~ Figure 19, overall formation is described.

Fixed base 1 is that the metal (steel, brass etc.) of about 2mm is formed as crank-like with thickness of slab, and motor 2 and pump chamber 10 are with the configuration of orthogonal form, and the output shaft of above-mentioned motor is pressed in the axis hole 3a of eccentric cam 3.In addition, fixed base 1 is provided with through hole 1b, considers assembling, the size in hole is larger than the maximum outside diameter of above-mentioned eccentric cam 3.Although made above-mentioned fixed base 1 with the metal of steel, brass etc., as long as and according to the size of pump chamber 10, suction and discharge ability the rigidity should closed required by fixed base 1 selects material.Such as, in the occasion that the environment that the possibility of corroding due to moisture is higher uses, by selecting the brass for also answering the brass of right required rigidity etc. and the zinc containing ratio of copper to select the material be suitable for.In the occasion of copper, by selecting carbon content to be how many, necessary rigidity just can be selected to comprise other characteristic.

There is back shaft 3b in one end of eccentric cam 3, the internal diameter of press-in ball bearing 5, at the bearing hole 6b of the external diameter press-in moveable arm 6 of ball bearing 5, suppress the section portion of above-mentioned back shaft 3b with screw, in case press-in portion comes off.

Moveable arm 6 is provided with joint-cutting 6d, when being pressed into the periphery of ball bearing 5, considering assembling performance and there is elasticity, thus available hand inserts.In addition, have seating plane 6a in one end of above-mentioned moveable arm 6, barrier film (A) 7 clamped by this face and fixed plate 8, and is screwed.By the deflection of barrier film (A) 7 during clamping by the support face 6c of above-mentioned the moveable arm 6 and bearing surface 8a of fixed plate 8 limit.

Barrier film (A) 7 has sealing flange 7c at peripheral part, with the form of a certain amount of flexure clamped by fixed groove (A) 9f of barrier film cover 9 and above-mentioned fixed base 1, spills, and fix with three screws with air-prevention.In addition, the membranous part 7a of barrier film (A) 7 is formed the heavy section 7b of thickening ring-type, even if the air pressure fluctuated, the vibration of membranous part 7a also suppressed by the rigidity of the heavy section 7b of ring-type and inertial mass, thus becomes the form of the vebrato reducing membranous part 7a.

Between barrier film cover 9 and barrier film (A) 7, be formed with pump chamber 10, barrier film cover 9 utilizes bead 9e to locate and is fixed in the datum hole 1a of above-mentioned fixed base 1.

Barrier film cover 9 is the vitals forming pump chamber, has intakeport 9a and relief opening 9b, be respectively equipped with mounting hole 9c and multiple air passing hole 9d on top.Above-mentioned mounting hole 9c is provided with the safety check 11,12 of umbrella to suppress air circulation.

Nozzle base 14 is fixed with two screws on the top of barrier film cover 9.

Relief opening 9b relative to barrier film cover 9 on nozzle base 14 is provided with dampening chamber 14c, the tap hole 14d discharging air is had on dampening chamber 14c, in addition, inner folding and unfolding has the filter 13 having resiliency and have vent ability to push above-mentioned safety check 12 minutely.

There is at the central part of nozzle base 14 the air chamber 14f be communicated with the relief opening 9b of above-mentioned barrier film cover 9, in addition, at peripheral part, there is spray nozzle part 14a, insert extra heavy pipe 23 in nozzle Ministry of Foreign Trade and Economic Cooperation, connect to and can ventilate with the seal container 25 separately established.

Air chamber 14f comprises the internal diameter of said nozzle portion 14a and splits, and be separated into room 14g and lower room 14h, upper room 14g becomes with opening supports face 14e the form be communicated with.In addition, the front end of room 14g is provided with nozzle of small diameter portion 14b on above-mentioned.

Insert tubule 21 at the internal diameter of nozzle of small diameter portion 14b, the through above-mentioned extra heavy pipe 23 of tubule 21, front end is given prominence in the inside of above-mentioned seal container 25, and seal container 25 becomes with air chamber 14f the form be communicated with.In addition, tubule 21 by fixed tube 22 fix in case come off between the external diameter of nozzle of small diameter portion 14b.

Fixed tube 22 uses heat-shrinkable tube.

Opening supports face 14e abuts barrier film (B) 16, sealing bead (B) 16b of barrier film (B) 16, clamped by fixed groove (B) 15a of switch cover 15 and above-mentioned opening supports face 14e, fixes with chimeric pawl (B) 15c.Thus, above-mentioned upper room 14g becomes the form sealed by barrier film (B) 16, and barrier film (B) 16 moves up and down because of the variation of the air pressure of upper room 14g.

Be provided with jut 16a in the one side of barrier film (B) 16, insert chimeric clockwork spring support 17, be arranged at one end of the adjustment clockwork spring 18 in above-mentioned upper room 14g with clockwork spring support 17 supporting.

Detecting switch 19 and switch cover 20 is carried, to have clamped the form of detecting switch 19 and to have fixed with chimeric pawl (A) 15b and chimeric the chimeric of difference of height 20a on the top of switch cover 15.

The operating button 19a of detecting switch 19 abuts with the concave surface 16c of above-mentioned barrier film (B) 16, is carried out the opening and closing of contact by moving up and down of barrier film (B) 16.The opportunity of the opening and closing of contact is determined by the intensity of the air pressure in above-mentioned upper room 14g and above-mentioned adjustment clockwork spring 18.

The terminal part 19b of detecting switch 19 is connected with lead-in wire, and the signal of the opening and closing of contact is input to and controls in microcomputer.

Preventing finger from waiting contact rotary part when protective cover 24 is for checking, being screwed on above-mentioned fixed base 1.

The following describes the action of air pump especially negative pressure pump.

The rotation of motor 2 makes moveable arm 6 and barrier film (A) 7 vibrate by means of eccentric cam 3.Utilize barrier film (A) 7 to vibrate, the air pressure change in pump chamber 10, sucks air from intakeport 9a, and discharges from relief opening 9b.Now, safety check 11,12 suitably repeats opening and closing, causes the air of certain orientation to flow.The flow direction of air is determined by the installation direction of above-mentioned safety check 11,12, and the installation direction according to safety check distinguishes compression pump or negative pressure pump.

The central authorities of barrier film cover 9 are intakeport 9a, and when the air in pump chamber 10 compresses, the safety check 11 of intakeport 9a is installed along the direction that air does not spill, and relief opening 9b side is along the direction assembling of discharging air.The occasion of compression pump in contrast.

Vibrated by barrier film (A) 7, the air in the seal container 25 separately established is attracted by means of extra heavy pipe 23.Meanwhile, the air in the upper room 14g be communicated with tubule 21 is also attracted by means of above-mentioned seal container 25.

Namely to be gone up the air pressure in the 14g of room by the air pressure in above-mentioned seal container 25 due to detecting switch 19, the action when barrier film (B) 16 overcomes adjustment clockwork spring 18 and have dropped a certain amount of, therefore, the spring force by changing adjustment clockwork spring 18 can set arbitrarily the air pressure in seal container 25.But in the occasion of compression pump, specify detected air pressure with the pressing force of the operating button 19a of detecting switch 19, thus do not need to regulate clockwork spring 18.

Detect the composite force of air pressure and operating button 19a in the moment of detecting switch 19 action and regulate the equilibrium ratio of clockwork spring 18 more delicate, if now air pressure is because fluctuating every vibration of membrane, then the contact of detecting switch 19 causes flutter phenomenon.

Consider the durability of contact and the process etc. of crisis, should not tremble.

In order to remove this phenomenon, air chamber 14f is divided into two-part, be separated into room 14g and lower room 14h, and room 14g is communicated with seal container 25, thus the fluctuation of the air pressure produced at pump chamber is relaxed in above-mentioned seal container 25, alleviate the fluctuation of the air in the upper room 14g of direct control detecting switch 19, prevent the flutter phenomenon of contact.

In order to prevent the flutter phenomenon of contact, key makes room 14g and above-mentioned seal container 25 inside, although have as the present invention by the method that spray nozzle part 14a is connected with extra heavy pipe 23 with tubule 21 with seal container 25, also can consider in addition spray nozzle part 14a is extended and is directly connected to the method in seal container 25.

Barrier film (A) 7 is vibrated, by air from intakeport 9a air-breathing and when discharging from relief opening 9b, the airwaves in pump chamber 10, the membranous part 7a of the barrier film be in contact with it and the safety check 12 of relief opening 9b vibrate thus produce larger vebrato.

Consider vebrato, at the heavy section 7b of the ring-type that the membranous part 7a thickness setting of barrier film (A) 7 does not wait, in addition, dampening chamber 14c is set on the top of the safety check 12 of relief opening 9b, is provided with filter 13 in the inside of dampening chamber 14c to push above-mentioned safety check 12 minutely.

In addition, with regard to the vebrato reduction of barrier film (A) 7, also can consider to reduce as far as possible the area of membranous part 7a and thicker and suppress the method for vibration, but cause the power when barrier film (A) 7 vibrates needed for stretching membranous part to become excessive, therefore, from considerations such as the load to motor, bending durability, unsatisfactory.

Below, use figure illustrates the refrigerator with the air pump of one embodiment of the present invention.

First, overall about refrigerator, with reference to Figure 20 to Figure 22 while be described.Figure 20 is the front view of the refrigerator main body of present embodiment, and Figure 21 is the central longitudinal sectional view of the refrigerator of Figure 20, and Figure 22 is the front view of the refrigerator main body of Figure 20.

Refrigerator possesses refrigerator main body 101 and door 106 ~ 110 and forms.Refrigerator main body 101 has foamed polyurethane insulating material 113 and Vacuum thermal insulating material (not shown) and forms between the outer container 111 and resinous interior case 112 of steel plate, from by the order of cold storage room 102, refrigerating chamber 103, refrigerating chamber 104, vegetable compartment 105, there is multiple storeroom.In other words, in uppermost divide and be configured with cold storage room 102, divide in lowermost and be configured with vegetable compartment 105, between cold storage room 102 and vegetable compartment 105, be equipped with the refrigerating chamber 103,104 adiabatically separated with these two Room.Cold storage room 102 and vegetable compartment 105 are storerooms of refrigerated storage temperature section, and refrigerating chamber 103,104 is storerooms of the cryogenic temperature section (such as, being about the temperature section of-20 DEG C ~-18 DEG C) of less than 0 DEG C.In addition, refrigerating chamber 103 is divided into ice making compartment 103a and anxious refrigerating chamber 103b.These cold storage rooms 102 ~ 105 divided by partition 133,134,135.

Before refrigerator main body 101, be provided with the door 106 ~ 110 in the front openings portion of closed cold storage room 102 ~ 105.Door 106 is the doors in the front openings portion of closed cold storage room 102, ice making compartment door 107 is the doors in the front openings portion of closed ice making compartment 103a, chilling chilling chamber door 108 is the doors in the front openings portion of closed anxious refrigerating chamber 103b, refrigerating chamber door 109 is the doors in the front openings portion of closed refrigerating chamber 104, and vegetable compartment door 110 is the doors in the front openings portion of closed vegetable compartment 105.Refrigerating-chamber door 106 is made up of the double door splitting around formula, and ice making compartment 103a, anxious refrigerating chamber 103b, refrigerating chamber 104, vegetable compartment 105 are made up of the door of drawer type, and the container in storeroom is extracted out together with drawer door.

Refrigerator main body 101 is provided with refrigerating circulation system.This refrigerating circulation system is by connecting compressor 114 again after being linked in sequence of compressor 114, condenser (not shown), capillary tube (not shown) and vaporizer 115 and forming.Compressor 114 and condenser are arranged in the machine room of the lower backside being arranged at refrigerator main body 101.The cooler that vaporizer 115 is arranged on the rear being arranged at refrigerating chamber 103,104 is indoor, is provided with blowing fan 116 above the vaporizer 115 in this cooler room.

The cold air cooled by vaporizer 115 utilizes blowing fan 116 to each storeroom conveying of cold storage room 102, ice making compartment 103a, anxious refrigerating chamber 103b, refrigerating chamber 104 and vegetable compartment 105.Particularly, its part of cold air of utilizing blowing fan 116 to carry carries by means of the storeroom of throttle setting to be opened/closed to the refrigerated storage temperature section of cold storage room 102, vegetable compartment 105, and another part is carried to the storeroom of the cryogenic temperature section of ice making compartment 103a, anxious refrigerating chamber 103b and refrigerating chamber 104.

Utilize blowing fan 116 to be sent to the cold air of each storeroom of cold storage room 102, ice making compartment 103a, anxious refrigerating chamber 103b, refrigerating chamber 104 and vegetable compartment 105, after each storeroom of cooling, returned to cooler room by cold air return flow line.Like this, the refrigerator of present embodiment has the looping construct of cold air, makes the temperature that each storeroom 102 ~ 105 remains suitable.

In cold storage room 102, be removably provided with the multistage shelf 117 ~ 120 be made up of transparent resin plate.Its underlying space and lowermost space 121, to contact the interior back side of case 112 and the mode of bi-side is arranged, divide with superjacent air space by the shelf 120 of lowermost.In addition, be provided with the door bag 125 ~ 127 of multistage in the inner side of each refrigerating-chamber door 106, outstanding in cold storage room 102 under the state that these bags 125 ~ 127 are arranged in closing cold room door 106.

Below, reference Figure 21 ~ Figure 25 is while illustrate the configuration of the equipment in the lowermost space 121 of cold storage room 102.Figure 23 is the front view of the cold storage room part of the refrigerator main body of Figure 20.Figure 24 is the plan view of the lowermost space segment of the cold storage room of Figure 23.Figure 25 is the sectional block diagram of the lowermost space segment of the cold storage room of Figure 23.

Be sequentially with from a left side in lowermost space 121: for the ice making water tank 122 of the ice making disk supply system frozen water to ice making compartment 103a; For the Storage case 123 of the food such as folding and unfolding dessert; And keep the freshness of food and the long-term low pressure chamber 124 preserved for reducing pressure indoor.Here, low pressure chamber 124 refers to, utilizes the pressure regulating equipments such as such as vacuum pump to be reduced pressure to also lower than barometric pressure the storeroom formed from atmospheric pressure state by air pressure.Low pressure chamber 124 has the horizontal width also narrower than the horizontal width of cold storage room 102, and the side configuration of adjacent cold storage room 102.

Like this, low pressure chamber 124 due to be configured in be configured at refrigerator refrigerating chamber 103,104 and vegetable compartment 105 on cold storage room 102 lowermost space 121 in, therefore, ease of use is good.

Ice making water tank 122 and Storage case 123 are configured at the rear of the refrigerating-chamber door 106 in left side.Thus, only the refrigerating-chamber door 106 in left side is opened and just can pull out ice making water tank 122 and Storage case 123.In addition, low pressure chamber 124 is configured in the rear of the refrigerating-chamber door 106 on right side.Thus, only the refrigerating-chamber door 106 on right side is opened the food disc 160 (with reference to Figure 25) that just can pull out low pressure chamber 124.In addition, ice making water tank 122 and Storage case 123 are positioned at the rear of the door bag 127 of the lowermost of the refrigerating-chamber door 106 in left side, and low pressure chamber 124 is positioned at the rear of the door bag 127 of the lowermost of the refrigerating-chamber door 106 on right side.

As shown in Figure 24 and Figure 25, be provided with ice making water pump 128 at the rear of ice making water tank 122.As shown in Figure 24 and Figure 25, in the space of the side, rear portion of low pressure chamber 124, be provided with an example and the air pump 129 of the pressure regulating equipment for reducing pressure to low pressure chamber 124 at the rear of Storage case 123.Thus, with regard to air pump 129, can not only easily connecting duct on the pump joint on the side being arranged at low pressure chamber 124, and can maintain simply from front by taking out Storage case 123.

Below, reference Figure 25 ~ Figure 28 is while illustrate basic comprising and the cooling means thereof of low pressure chamber 124.Figure 25 is the sectional block diagram of the lowermost space segment of the cold storage room of Figure 23, and Figure 26 is the front view of the backplate of the cold storage room of Figure 23, and Figure 27 is the longitudinal sectional view near the room of the cold storage room of Figure 23, and Figure 28 is the stereogram of the room of the cold storage room of Figure 23.

Low pressure chamber 124 possesses: have the room main body 140 that food takes out the box like put into opening portion; The food of opening and closing room main body 140 takes out the low pressure chamber door 150 put into opening portion; And folding and unfolding food take out from low pressure chamber door 150 food disc 160 put into and form.In room main body 140, take out to put into by the food of closing low pressure chamber door 150 and use opening portion 42a, the space surrounded by low pressure chamber door 150 and food disc 160 is formed as the low-voltage space 141 be depressurized.Food disc 160 is arranged on the side, the back side of low pressure chamber door 150, and the movement with low pressure chamber door 150 can move forward and backward.

Room main body 140 possesses: the resin-made external frame 142 that chemical proofing, impact resistance and moldability are excellent; Glass plate 143 (such as tempered glass) plate formed with transparent tempered glass; The metal plate-shaped member 144 such as steel plate; And resinous door engaging part 148 and forming.

External frame 142 has the basic shape of roughly cuboid, is formed with food and takes out and put into and use opening portion 142a, be formed with glass plate placement opening portion 142b above above.In order to the intensity realizing external frame 142 improves, on formation sidewall 142c, the diapire 142d of this external frame 142 and the outer surface of rear wall 142e, the outstanding external frame that is formed strengthens flange 142f.

Glass plate 143 is placed on glass plate placement opening portion 142b by means of annular seal 145 airtightly, the upper wall of forming chamber main body 140.This glass plate 143 has the intensity preventing glass plate placement opening portion 142b to be out of shape to the inside because of decompression power.In addition, by transparent glass plate 143 is arranged on above external frame 142, can have an X-rayed in low pressure chamber 124.

In order to prevent the two side 142c of external frame 142 and diapire 142d and rear wall 142e to be out of shape because of decompression power, plate-shaped member 144 is arranged to extend along two side 142c, the diapire 142d of external frame 142 and rear wall 142e.

Because room main body 140 has, the resin-made external frame 142 being formed in box like above with opening portion 142a and the metal plate-shaped member 144 extended along two side 142c, diapire 142d and the rear wall 142e of external frame 142 are put in food taking-up, therefore, it is possible to external frame 142 entirety is made the structure more cheap than the occasion formed with sheet metal.In addition, owing to external frame 142 can be made resin, therefore, it is possible to simplify mounting construction etc.

As shown in figure 28, door engaging part 148 is arranged on food and takes out and put into above opening portion 142a.With regard to door engaging part 148, folding and unfolding takes out to being formed at food the recess 142a put into above with opening portion 142a ₁in コ font portion 148a and be molded as one from the door locking pawl 148b that コ font portion 148a forwards extends.Door locking pawl 148b is arranged with the width roughly the same with the width of door handle 152, is fastened between the top of door handle 152 and location, front and back upper end portion 151e.And, be configured to carry out engagement release by being rotated centered by hinge part 152a by door handle 152.

Be provided with backplate 130 at the back side of cold storage room 102, this backplate 130 forms the passage that the cold air supplied from blowing fan 116 is passed through.Plate 130 is provided with overleaf: the cold gas exhausting outlet (the first cold gas exhausting outlet) 131 that the cold storage room to cold storage room 102 cool-air feed cools; To the cold gas exhausting outlet (the second cold gas exhausting outlet) 132 that the low pressure chamber of lowermost space 121 cool-air feed of cold storage room 102 cools; And cold air return port 133.Cold air return port 133 is arranged to be arranged in the side of close cold storage room 102 side, rear, the back side of room 124.

The gap of cold gas exhausting outlet 132 above room 124 and below shelf 120 is arranged.The cold air of discharging from cold gas exhausting outlet 132 using the room 124 above with shelf 120 below gap flow as cold air path 137, from cooling chamber 124 above.Therefore, indirectly cool in room 124.

Here, due to the right flank of room 124 near cold storage room 102 is configured and the gap on the right side of decontamination chamber 124, and the left part on room 124 arranges the gap in not shown shelf (partition) and the left side of decontamination chamber 124, therefore, the cold air of discharging from cold gas exhausting outlet 132 can not be shunted to the side of the left and right of room 124 but flow on room 124.Thereby, it is possible to increase the air conditioning quantity above cooling chamber 124, can in quick cooling chamber 124.Cool the cold air above room 124, be inhaled into cold air return port 133 after left surface by room 124 of the front of room 124, and returned to cooler room by cooling return passage.Because cold air return port 133 is arranged to be arranged in the side of rear, the back side near cold storage room 102 side of room 124, therefore, the back side of cold air and room 124 and left surface contact and cool.

Like this, room 124 utilizes cold air pass through outside and indirectly cool.In addition, the cold air cooling the entirety of cold storage room 102 also sucks to cold air return port 133.

Cold air return port 133 is formed at the part of the backplate 130 relative with the rear wall 142e of external frame 142.The mode that this rear wall 142e becomes front with diapire side is formed obliquely.Thus, can guarantee to return to air channel fully between rear wall 142e and backplate 130.In addition, backplate 130 has to tilt accordingly and the part of giving prominence to the inclination of rear wall 142e, forms cold air return port 133 in this part.Thereby, it is possible to guarantee the vent area of cold air return port 133 fully.

Below, reference Figure 29 is while specifically describe external frame 142.Figure 29 is the stereogram observing external frame 142 from upper left side.

External frame 142 has: be arranged on the locking teat 142h on two side 142c and rear wall 142e; And the pump joint 142i be arranged on sidewall 142c and pressure switch joint 142j.

Pump joint 142i has the inside and outside passage being communicated with external frame 142, is connected with air pump 129 by means of conduit 1 29a (with reference to Figure 28).The inner utilization air pump 129 of external frame 142 is reduced pressure by pump joint 142i.Pump joint 142i is provided with in the mode facing to plate-shaped member 144 opening at the sidewall rear portion of external frame 142.Between pump joint 142i and plate-shaped member 144, be provided with gap, thus easily can carry out the decompression of the inside of external frame 142.

Pressure switch joint 142j has the inside and outside passage being communicated with external frame 142, is connected with pressure switch.The pressure of the inside of external frame 142 is detected by pressure switch by pressure switch joint 42j.

Claims

1. an air pump, possesses motor and barrier film, it is characterized in that,

On the fixed base of metal crank shape, above-mentioned motor and the pump chamber that formed by above-mentioned barrier film are configured to orthogonal, make above-mentioned vibrate and carry out air-breathing, there is the detecting switch of air pressure, connection is split from the nozzle inside diameter portion of the extra heavy pipe of the seal container separately established, using a side as the upper room being used for operation detection switch, using the opposing party as the lower room arriving the pump chamber formed by barrier film, the front end being used for the nozzle of the side, upper room operating above-mentioned detecting switch is extended, and the inside diameter of the through extra heavy pipe connected, protrude from above-mentioned seal container, above-mentioned seal container is the storeroom of foodstuff storing, this air pump is used for reducing pressure in above-mentioned storeroom.