CN103032306A - Gear pump and refrigerator having same - Google Patents
Gear pump and refrigerator having same Download PDFInfo
- Publication number
- CN103032306A CN103032306A CN2012102754786A CN201210275478A CN103032306A CN 103032306 A CN103032306 A CN 103032306A CN 2012102754786 A CN2012102754786 A CN 2012102754786A CN 201210275478 A CN201210275478 A CN 201210275478A CN 103032306 A CN103032306 A CN 103032306A
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- China
- Prior art keywords
- gear
- axle
- live axle
- pump
- driven gear
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
- F25D23/126—Water cooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/22—Construction of moulds; Filling devices for moulds
- F25C1/24—Construction of moulds; Filling devices for moulds for refrigerators, e.g. freezing trays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/22—Construction of moulds; Filling devices for moulds
- F25C1/25—Filling devices for moulds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2220/00—Application
- F04C2220/40—Pumps with means for venting areas other than the working chamber, e.g. bearings, gear chambers, shaft seals
Abstract
The invention provides a gear pump and a refrigerator having the same, wherein liquid delivered by the gear pump is not easy to be retained outside a delivery path, and the gear pump and the refrigerator are excellent in hygiene. The gear pump comprises a driving gear (7) rotating by a driving source (2), a driven gear (8) rotating by engaging with the driving gear (7), and a pump chamber equipped with the driving gear (7) and the driven gear (8); the driving gear (7) and the driven gear (8) are respectively provided with communication holes (7e, 8e) communicating upper surfaces with lower surfaces, so liquid entering the upper surfaces and the lower surfaces of the driving gear (7) and the driven gear (8) is discharged from the lower side or the upper side of the communication holes (7e, 8e).
Description
Technical field
The present invention relates to gear pump and the refrigerated warehouse with this gear pump.
Background technique
The background technique of the art has Japanese kokai publication hei 7-293453 communique (patent documentation 1).In the patent documentation 1, put down in writing following this point: mesh in the enclosure and the bearing of shell one side of the actuation gear that rotates and driven gear and their axle of supporting or this axle and this axle of supporting between a side or both sides among clearance G 1 or the G2 are set, but each gear is radially being supported to fine motion, gap between Topland and the shell inner circle wall can be adjusted, when attracting the such compressible fluid of air, make the gap turn narrow between Topland and the shell inner circle wall improve suction capacity by the power that the gear axle base is broadened that acts between the gear, and when having attracted compressible fluid, by the power of compressible fluid gear is pressed to the direction that axle base is narrowed down and widened the gap, prevent pump noise (with reference to summary).
In addition, Japanese kokai publication hei 7-127957 communique (patent documentation 2) is arranged.In the patent documentation 2, put down in writing the stress surface (two sides) at gear, the recess this point of the taper of the depression of the tooth top of the gear when being provided for preventing moulding, and the resinous part this point that embeds this recess is installed.(patent documentation 2 paragraphs [0033] [0034]).
The look-ahead technique document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 7-293453 communique
Patent documentation 2: Japanese kokai publication hei 7-127957 communique
Summary of the invention
The problem that invention will solve
But, the actuation gear of patent documentation 1 record and driven gear resin solid ground moulding.In this structure, mould is injected time of aqueous resin and long-term to the time that hardening of resin and temperature reduce, manufacturing efficiency is lower.
In addition since (for example, form gear upper surface or the lower surface of axis hole) near the decanting point during to the mould resin by injection after moulding is finished can residual projection, be so-called burr, so can produce the individual difference of gear, dimensional accuracy reduces.In addition, when these burr are carried out fine finishing, can not thoroughly become the plane, can residual some step differences.Make the centre-of gravity shift of gear because of this step difference, produce the vibration revolution during gear rotation, with shell or the opposing party's Gear Contact, become the reason of attraction power reduction and noise.
And then, when having the gap between their axle of actuation gear and driven gear and supporting, when the tooth of each gear enters fluid by a piece Move Volumes, the pressure oscillation of radial direction, gear produces vibration and noise and increases for axle shift in position on radial direction.
In addition, when flowing into the gear upper surface as the liquid such as water of carrying fluid, be not discharged from but be detained, during lasting long-term unused state, may breed bacterium after driving.
Similarly, liquid flows into the recess of gear and accumulates, and may become unhygienic in the patent documentation 2.
So the liquid that the object of the present invention is to provide conveying is not easy to retain beyond carrying path, at gear pump good aspect the health with have the refrigerated warehouse of this gear pump.
And then its purpose is to provide the gear pump that has improved suction efficiency and the refrigerated warehouse with this gear pump.
Be used for solving the method for problem
Among the present invention, in order to solve above-mentioned problem, the method for putting down in writing in the scope that for example right to use requires.Wherein an example is, a kind of gear pump has the actuation gear of rotation by the driving source driving; Driven gear with this actuation gear engagement rotation; With the pump chamber that disposes above-mentioned actuation gear and above-mentioned driven gear, wherein above-mentioned actuation gear and above-mentioned driven gear, be formed with respectively the intercommunicating pore that upper surface and lower surface are communicated with, with enter above-mentioned actuation gear and above-mentioned driven gear separately upper surface or the liquid of lower surface from above-mentioned intercommunicating pore to downside or upside discharge.
The invention effect
According to the present invention, its purpose be to provide the liquid of conveying beyond carrying path, be not easy to retain, at gear pump good aspect the health with have the refrigerated warehouse of this gear pump.
And then its purpose is to provide the gear pump that has improved suction efficiency and the refrigerated warehouse with this gear pump.
Description of drawings
Fig. 1 is the stereoscopic figure of the gear pump of an embodiment of the invention.
Fig. 2 is the exploded perspective view of the gear pump integral body of an embodiment of the invention.
Fig. 3 is the major component sectional view of the gear pump of an embodiment of the invention.
Fig. 4 is the longitudinal section of the gear pump integral body of an embodiment of the invention.
Fig. 5 is the longitudinal section of the refrigerated warehouse main body of an embodiment of the invention.
Symbol description
1 gear pump
2 motors (driving source)
The 2a output shaft
3a the first reduction gear
3b the second reduction gear
The 3c sealed member
4 motor containers
4a engages pawl
5 live axles
5a D cutting surface
6 sealing of hole parts
7 actuation gears
7a, 11e1 live axle inserting hole
Zone between 7c, the 8c tooth top
7d, 8d Topland
7e, 8e intercommunicating pore
7f, the 8f cylindrical part
7g, 8g linking department
8 driven gears
8a swivel bearing axle inserting hole
8b swivel bearing axle inserting hole upper end portion
9 lower cases
9c, 10c, 11c coupling hole (screw)
Engagement portion, 9d1 bottom
9e1 output shaft intercommunicating pore
The 9e2 riser portions
9f, 10f drive shaft bearing section
10 upper cases
The 10a suction port
The 10b exhaust port
The first engagement portion, 10d1 top
The second engagement portion, 10d2 top
The 3rd engagement portion, 10d3 top
The 10e inner circle wall
The 10g slot part
11 middle housing
The first engagement portion, 11d1 middle part
The second engagement portion, 11d2 middle part
11e2 swivel bearing axle lower end support
12 affixed parts (bolt)
15 swivel bearing axles
16 bolts
17 screws
18 grooves
19 annular seal parts
Embodiment
Below, illustrate to be used for implementing mode of the present invention.Wherein, below be one embodiment of the present of invention, but the invention is not restricted to this.
Fig. 1 is the stereoscopic figure of the gear pump of an embodiment of the invention.Fig. 2 is the exploded perspective view of the gear pump integral body of an embodiment of the invention.Fig. 3 is the major component sectional view of the gear pump of an embodiment of the invention.Fig. 4 is the longitudinal section of the gear pump integral body of an embodiment of the invention.
The overall structure of gear pump at first, is described.Gear pump 1 by inside taken in motor container 4 as the motor 2 of driving source, be disposed at the lower case 9 on the top of motor container 4, at the upper case 10 above the lower case 9, be configured in the middle housing 11 integrant outward appearances between upper case and the lower case.
At upper case 10, in the relative side of case, be respectively arranged with suction port 10a, exhaust port 10b.
By the space that upper case 10 and middle housing 11 mark, namely so-called pump chamber is communicated with outside by suction port 10a, exhaust port 10b, and intermeshing a pair of actuation gear 7, driven gear 8 have been taken in its inside.The rotation that actuation gear 7 makes motor 2 is slowed down by reduction gear (the first reduction gear 3a, the second reduction gear 3b) and to its conduction and rotary actuation.Driven gear 8 makes the tooth engagement and rotary actuation by actuation gear 7 rotations.
The basic structure of gear pump is: by the rotation of a pair of actuation gear 7, driven gear 8, (for example suck fluid from suction port 10a, the liquid such as water of ice making disk being supplied with in order to generate ice), force feed in the space between each tooth top of actuation gear 7, driven gear 8 between the inner circle wall 10e of regional 7c, 8c and upper case 10 is discharged from exhaust port 10b.
Then, further specify package assembly and the inner structure part of each shell.Motor container 4 is for there being end hollow cylinder shape, and open on its top.Open at least a portion of edge part at this, be formed with engaging pawl 4a.Lower case 9 has the function that the configuration space of motor 2 accommodation spaces and reduction gear row (the first reduction gear 3a, the second reduction gear 3b) is separated, be cross section O word shape end hollow cylinder shape arranged.The engaging pawl 4a of motor container 4 flexibly engages by the underpart with lower case 9, with motor container 4 and lower case 9 combinations (with reference to Fig. 4).In addition, in the bottom surface of lower case 9, be formed with a plurality of screws 17.By bolt 16 being inserted through this screw 17, make motor 2 and lower case 9 fixing.
Be provided with output shaft 2a on the top of motor 2.This output shaft 2a is by being formed at the output shaft intercommunicating pore 9e1 of lower case 9, and (from the motor accommodation space to reduction gear row configuration space) is outstanding upward from the below of lower case 9.In addition, by at output shaft intercommunicating pore 9e1 periphery sealed member 3c being set, stop liquid to flow into motor container 4 from output shaft intercommunicating pore 9e1.And then the edge of output shaft intercommunicating pore 9e1 has the riser portions 9e2 that vertically arranges upward.Thus, even the deteriorated sealing that makes of sealed member 3c reduces, also can stop liquid to flow into motor container 4 by riser portions 9e2.
In output shaft 2a upper end (than sealed member 3 and riser portions 9e2 position closer to the top), the first reduction gear 3a is inserted, so that itself and output shaft 2a one rotary actuation by the axis hole at center.With the second reduction gear 3b of the first reduction gear 3a engagement, be configured in by in the space of lower case 9 and middle housing 11 encirclements.The second reduction gear 3a inserts logical live axle 5 in the axis hole at center.This live axle 5 arrives the upper wall inner face of upper case 10 by being formed at the live axle inserting hole 11e1 of middle housing 11.The lower end of live axle 5 is arranged at the 9f of the drive shaft bearing section supporting of lower case 9.The upper end of live axle 5 is arranged at the 10f of the drive shaft bearing section supporting of upper case 10.That is, live axle 5 is with lower end and upper end rotating mode driven shaft support 9f and the supporting of the 10f of drive shaft bearing section axle.
The lower surface of middle housing 11 and be live axle 5 around (around the bottom of live axle inserting hole 11e1), be provided with anti-sealing etc. and immerse the shaft seal parts 6 of motors 2 one sides via live axle 5.
Herein, cylindrical part 8f be the upper end be rotated supporting axle inserting hole upper end portion 8b sealing end hollow cylindrical arranged.That is, swivel bearing axle 15 is that the lower end is supported, and the upper end is the state of free-ended so-called cantilever support.
In the periphery of the face that contacts with middle housing 11 of upper case 10, in being the slot part 10g of U font, the cross section disposes annular seal parts 19.Thus, suppress outflow from the conveying fluid of pump chamber (space of being marked by upper case 10 and middle housing 11).
These parts are constituted by upper case 10, middle housing 11, lower case 9.Particularly, the coupling hole 9c of the coupling hole 10c of upper case 10, the coupling hole 11c of middle housing 11, lower case 9 is separately positioned on four jiaos of separately shell, and during combination, they are in above-below direction location accordingly respectively.And each shell connects with affixed parts (bolt) to run through the mode of the screw that is communicated with up and down with coupling hole 10c, coupling hole 11c, coupling hole 9c.
In the situation that upper case 10, middle housing 11, the affixed parts 12 of lower case 9 usefulness are connected, the position that need to be adjusted into coupling hole 10c, coupling hole 11c, coupling hole 9c arrives the position of regulation.In the present embodiment, location and assembly precision in order to improve each coupling hole have a plurality of engagement portions.
Particularly, in the sidewall outer of upper case 10 and be between a coupling hole 10c and other coupling holes 10c, be formed with top the first engagement portion 10d1, top the second engagement portion 10d2, top the 3rd engagement portion 10d3.Top the first engagement portion 10d1, top the second engagement portion 10d2, top the 3rd engagement portion 10d3 are respectively with the rectangular portion of downward-extension on the predetermined distance, when having combination and the below length of the contacts side surfaces of middle housing 11.
In addition, in the sidewall outer of middle housing 11, be formed with rectangular middle part the first engagement portion 11d1, middle part the second engagement portion 11d2 with downward-extension on the predetermined distance.Be that middle part the first engagement portion 11d1 is slotting logical between top the first engagement portion 10d1 and top the second engagement portion 10d2, middle part the second engagement portion 11d2 inserts logical position relationship between top the second engagement portion 10d2 and top the 3rd engagement portion 10d3.
In addition, in the sidewall outer of lower case 9, be formed with and between middle part the first engagement portion 11d1 and middle part the second engagement portion 11d2, insert logical rectangular bottom engagement portion 9d1.
Wherein, each engagement portion configures respectively in a side and opposite side symmetrically across the face by suction port 10a and exhaust port 10b.
In this structure, each engagement portion is engaged at assigned position, during with upper case 10, middle housing 11, lower case 9 combination, with affixed parts 12 affixed front and back, can recognize the engagement portion from the outside.Thus, can visually confirm whether there is mistake in the assembling.
And then top the second engagement portion 10d2 and engagement portion, bottom 9d1 separate the predetermined distance configuration at elongation line on above-below direction.When affixed with affixed parts 12, the sealed member 3c resiliently deformable of the lower surface periphery configuration of upper case.In the situation that Jiang Sijiao connects with affixed parts 12, when there is deviation in each affixed power, there is sealing to produce uneven possibility.In the present embodiment, can be according to before top the second engagement portion 10d2 and the gap size between the 9d1 of engagement portion, bottom, confirm whether affixed power suitable, perhaps across through the face of suction port 10a and exhaust port 10b in the affixed power of a side and opposite side equalization and so on whether.
Then, the suction of carrying fluid-discharge operation is described.As shown in Figure 3, when actuation gear 7 drove to the r1 direction rotation, the driven gear 8 of engagement also drove to the r2 direction rotation.Thus, sucking a side (suction port 10a) and discharging a side (exhaust port 10b) generation pressure difference, carry fluid (being inhaled into the liquid such as rear water such as gases such as air) to be inhaled into (the arrow a direction Fig. 3) in the pump chamber from suction port 10a.Be inhaled into the conveying fluid of pump chamber, in the space between each tooth top of actuation gear 7, driven gear 8 between the inner circle wall 10e of regional 7c, 8c and upper case 10, send to discharging a side pressure, be transported to exhaust port 10b and be discharged from (the arrow b direction among Fig. 3) afterwards.
Herein, the live axle inserting hole 7a of the actuation gear 7 of the present embodiment forms with the chimeric size with the rotation of live axle 5 one.In addition, be formed with D cutting part 5a at live axle 5, form also corresponding with live axle inserting hole 7a shape.Thus, the driving force of motor 2 can not can be conducted on the gap loss ground of live axle 5 and live axle inserting hole 7a, has improved suction-expulsion efficiency.
At the lower surface of actuation gear 7 with the position of driven gear 8 engagements, be formed with groove 18.This is because the conveying fluid that clips between the tooth top of actuation gear 7 and driven gear 8, when following the rotation volume of gear to change, the liquid such as water, is the incompressible fluid very high pressure that can become when volume reducing.In addition, when pressure oscillation occured intermittently, the gear vibration-generating can become the reason of noise.And then head pressure generation pulsation can become the reason of the lost of life of pump.So, the groove 18 of the volume change between the tooth top of avoiding actuation gear 7 and driven gear 8 is set as the unit that prevents the volume change.
The structure of actuation gear 7 and driven gear 8 then, is described.Actuation gear 7 has the linking department 7g that connects cylindrical part 7f and Topland 7d.This linking department 7g is less with the thickness that Topland 7d and cylindrical part 7f compare short transverse.More specifically, be Topland 7d height〉cylindrical part 7f height〉linking department 7g order highly.Wherein, linking department 7g is to link in the horizontal direction near the mode near the cylindrical part 7f substantial middle of the short transverse of Topland 7d.
The 10f of drive shaft bearing section of upper case 9 as shown in Figure 4, is the drum of giving prominence to downwards from upper case 9 upper surfaces.And drive shaft bearing section 10f lower end is positioned near the low cylindrical part 7f upper end of aspect ratio Topland 7d.According to this structure, have the length of enough supporting driving shafts 5, and the part of not giving prominence to upper case 9 tops.Therefore, can make the height of contour size of gear pump integral body suppress lowlyer.In addition, can shorten the axle bearing length (drive shaft bearing section 10f-drive shaft bearing section 9f) of live axle about in the of 5, the vibration revolution that suppresses take support as fulcrum impacts actuation gear 7 as far as possible.In addition, by suppressing the length of live axle 5, axle crooked less, and then reduced material cost.
In addition, the size of the cylindrical part 7f short transverse of actuation gear 7 is lower than downside in the part that the top side of cross section central authorities under the state is set.Thus, during assembling can by which face of visual judgement be top or below, can prevent assembly defect.
And then, on the circumferencial direction of the linking department 7g of actuation gear 7, be provided with the upper surface of a plurality of connection actuation gears 7 and the intercommunicating pore 7e of lower surface with predetermined distance.This intercommunicating pore 7e configures with concentric circles around cylindrical part 7f.
The action effect of this intercommunicating pore 7e is described herein.Existing gear pump is by making gear constitute solid gapless, the structure that makes the liquid such as water can not flow into (between tooth top-running shaft) in the gear and be detained.On the other hand, be provided with intercommunicating pore 7e in the present embodiment, can utilize this intercommunicating pore 7e top to discharge water with the relative pressure difference of below.
Namely, the liquid that exists in one side's of the top of actuation gear 7 or bottom the space, move to the space (not having actuation gear 7 bottoms of liquid or the opposing party space on top, perhaps the less space of liquid) of the low side of pressure by intercommunicating pore 7e because of the pressure difference of actuation gear about in the of 7.
Actuation gear 7(and driven gear 8) when rotating, the liquid of fluid is carried in the conduct that the masterpiece of discharging laterally from actuation gear 7 centers because of centrifugal force is used for accumulating between the cylindrical part 7f-Topland 7d of actuation gear 7.
But, between cylindrical part 7f-Topland 7d, do not have intercommunicating pore 7e and form in the situation of simple recess, become decompression state in the recess during actuation gear 7 rotation, be difficult to make the liquid that accumulates in recess outside recess, to be discharged.
So, by being set, removes intercommunicating pore 7e as shown in this embodiment the decompression state of recess, and the liquid between the cylindrical part 7f-Topland 7d is discharged to actuation gear 7 outsides, suppress to be detained.Like this, the liquid of the upper surface that enters actuation gear 7 or lower surface is discharged to opposite (situation of upper surface is lower surface, and the situation of lower surface is upper surface) side.The liquid that is discharged from is discharged laterally because of the centrifugal force of the rotation generation of actuation gear 7, is directed to exhaust port 10b one side from 7c between the tooth top or groove 18 etc.That is, can become and prevent from carrying fluid, be detained such as water etc. is long-term, and the good pump structure of wholesomeness.
In addition, the decanting point in the time of will be to the mould resin by injection is arranged on linking department 7g of actuation gear 7 etc.Thus, burr etc. fully away from the position of upper case 9, middle housing 11, so burr etc. contacts reduction and the noise of inhibition attraction power in the time of can suppressing actuation gear 7 rotation with upper case 9, middle housing 11.
Then, driven gear 8 has the linking department 8g that links cylindrical part 8f and Topland 8d too.This linking department 8g is less with the thickness that cylindrical part 8f compares short transverse with Topland 8d.More specifically, be Topland 8d height ≈ cylindrical part 8f height〉linking department 8g order highly.Wherein, linking department 8g is with near the substantial middle of the short transverse of Topland 8d, links in the horizontal direction near the mode of cylindrical part 8f.On the circumferencial direction of linking department 8g, be provided with the upper surface of a plurality of connection driven gears 8 and the intercommunicating pore 8e of lower surface with predetermined distance.This intercommunicating pore 8e configures with concentric circles around cylindrical part 8f.By this intercommunicating pore 8e, can remove the decompression state of the recess between the cylindrical part 8f-Topland 8d of driven gear 8, the liquid between the cylindrical part 8f-Topland 8d is discharged to driven gear 8 outsides, suppress to be detained.About the principle that the liquid of recess is discharged, identical with the explanation of actuation gear 7.The liquid that is discharged from is discharged laterally because of the centrifugal force that the rotation of driven gear 8 produces, and is directed to exhaust port 10b one side from 8c between the tooth top or groove 18 etc.That is, can become and prevent from carrying fluid, be detained such as water etc. is long-term, and the good pump structure of wholesomeness.
The swivel bearing axle inserting hole upper end portion 8b of driven gear 8 is positioned at the height with the highly roughly the same degree of Topland 8d.And the upper-end part of driving of swivel bearing axle 15 is in the position that separates predetermined distance from swivel bearing axle inserting hole upper end portion 8b inner face downwards.Thus, even in the situation that driven gear 8 rotates and up and down change, swivel bearing axle inserting hole upper end portion 8b also can not contact with the upper end portion of swivel bearing axle 15, can suppress the generation of noise.
In addition, the decanting point in the time of will be to the mould resin by injection is arranged on linking department 8g of driven gear 8 etc.Thus, burr etc. fully away from the position of upper case 9, middle housing 11, so burr etc. contacts reduction and the noise of inhibition attraction power in the time of can suppressing driven gear 8 rotation with upper case 9, middle housing 11.
Herein, for example, if make actuation gear 7 and driven gear 8 also be the metal manufacturing, then quality is excessive, is not suitable for the miniaturization and of gear pump.On the other hand, if make live axle 5 and swivel bearing axle 15 be resin manufacture, axle strength deficiency then, diameter increases.
In addition, the some or both sides in the gap of the gap of the actuation gear 7-live axle 5 of the present embodiment, driven gear 8-swivel bearing axle 15, for can insert axis and with the size of the degree of each gear one rotation.Like this, when axle-gear clearance is dwindled as far as possible, the gap between the inner circle wall 10e of Topland 7d, 8d and upper case 10 is kept evenly, thus can prevent Topland 7d, 8d and upper case 10 inner circle wall 10e contact the realization low noise.
On the other hand, in the situation that axle-gear clearance is larger, when the tooth of each gear enters fluid by a piece Move Volumes, the pressure change of radial direction, gear is for axle shift in position on radial direction, and vibration-generating increases noise, so not preferred.And then because the rotating center positional accuracy of gear worsens, so variation is meshed in the centre distance change between the gear, noise increases, and load torque also can increase.
So, as shown in this embodiment by making axle-gear clearance as far as possible little, can also set the gap size of the inner circle wall 10e of Topland 7d, 8d and upper case 10 less, thus, be easy to the air (compressible fluid) that attracts viscosity little, can make to suck to become good.
Then, the refrigerated warehouse with gear pump is described.As shown in Figure 5, the refrigerated warehouse main body 101 of present embodiment has cold storage room 102, ice making compartment 103 and upper strata refrigerating chamber 104, lower floor's refrigerating chamber 105, vegetable compartment 106 from top daily life.As an example, cold storage room 102 and vegetable compartment 106 are the storerooms in about 3～5 ℃ refrigerated storage temperature territory.In addition, ice making compartment 103, upper strata refrigerating chamber 104 and lower floor's refrigerating chamber 105 are the storerooms in about-18 ℃ cryogenic temperature territory.
Outside the case of refrigerated warehouse main body 101 and in the case, passed through the heat insulating box 110 that filling-foam thermal-protective material (polyurethane foam) forms between internal case 110a and the outer container 110b and separated.In addition, the heat insulating box 110 of refrigerated warehouse main body 101 is equipped with a plurality of vacuum heat-insulation parts 118.
Make cold storage room 102 and upper strata refrigerating chamber 104, ice making compartment 103(with reference to Fig. 1 by heat insulation dividing plate 112a in the case, not shown upper strata refrigerating chamber 104 among Fig. 2) separate, by heat insulation dividing plate 112b lower floor's refrigerating chamber 105 and vegetable compartment 106 are separated.
In ice making compartment 103, be provided with the water-cooled with the supply of making freeze the ice making disk 125 of ice making, as ice in the water container that be used for to judge ice making disk 125 belows what bar inspection ice bar 124, as the automatic ice making machine 122 of the driver element 123 of the driver element that drives ice making disk 125 and inspection ice bar 124.
In addition, in the cold storage room 102, be provided with as the feed tank 126 that can unload the water storing unit of water supply, from the inner gear pump 1 that extracts water of feed tank 126, from 1 pair of ice making disk of gear pump 125 supply water for water passage 129.
If have the refrigerated warehouse of the gear pump of the present embodiment, then owing to can reducing vibration and the noise of gear pump, so can reduce the impact that the resonance in the situation that is assembled into the refrigerated warehouse main body causes.
As mentioned above, according to present embodiment, can realize following effect.
At first, have actuation gear by driving source rotation, with the driven gear of this actuation gear engagement rotation, dispose in the gear pump of pump chamber of above-mentioned actuation gear and above-mentioned driven gear, above-mentioned actuation gear and above-mentioned driven gear, form respectively the intercommunicating pore that upper surface is communicated with lower surface, with the liquid that enters each upper surface of above-mentioned actuation gear and above-mentioned driven gear or lower surface from above-mentioned intercommunicating pore to downside or upside discharge.Thus, can prevent from carrying fluid, be trapped in for a long time gear upper surface or lower surface such as water etc., become the good pump structure of wholesomeness.
In addition, above-mentioned actuation gear is formed with the live axle inserting hole of inserting logical live axle, supports the drive shaft bearing section in upper surface of outer cover formation of above-mentioned live axle, is the shape of giving prominence to the inside from above-mentioned outer surface of outer cover.Thus, have the length of enough supporting driving shafts, and not to the outstanding part in the upper case outside, can suppress the height of contour size of gear pump integral body lower.
In addition, above-mentioned actuation gear is formed with the live axle inserting hole of inserting logical live axle, above-mentioned driven gear is formed with the swivel bearing axle inserting hole of inserting logical swivel bearing axle, the gap of the gap of above-mentioned live axle inserting hole and above-mentioned live axle and/or above-mentioned swivel bearing axle inserting hole and above-mentioned swivel bearing axle is the size that can insert logical above-mentioned live axle or above-mentioned swivel bearing axle and above-mentioned actuation gear or the rotation of above-mentioned driven gear one.Thus, the gap between the inner circle wall 10e of Topland 7d, 8d and upper case 10 is kept evenly, thus can prevent Topland 7d, 8d and upper case 10 inner circle wall 10e contact the realization low noise.
In addition, in the refrigerated warehouse of having divided chamber, refrigerated storage temperature territory and chamber, cryogenic temperature territory, has the water storing unit that is disposed at chamber, above-mentioned refrigerated storage temperature territory, with the ice making disk from above-mentioned water storing unit acceptance water supply that is disposed at chamber, above-mentioned cryogenic temperature territory, and has the water of the above-mentioned water storing unit of suction to above-mentioned any gear pump of above-mentioned ice making disk discharge.Thus, can reduce vibration and the noise of gear pump, reduce the impact that the resonance in the situation that is assembled into the refrigerated warehouse main body causes.
Wherein, the present invention is not limited to above-described embodiment, comprises various variation.For example, above-described embodiment describes in detail for the explanation the present invention of easy to understand ground, is not limited to have all structures of explanation.In addition, the part of certain embodiment's structure can be replaced with other structure.In addition, can append/delete for the part of embodiment's structure.
In addition, upper case 10, middle housing 11, lower case 9 are titles for convenience of explanation, do not limit position up and down.In the present embodiment, illustrated to its example that from the top, configures successively (namely, motor 2 is positioned at the example of below), still also can be the structure (that is, motor 2 is positioned at the structure of top) with order configuration from the top of lower case 9, middle housing 11, upper case 10.That is, no matter be what kind of posture, can both provide the liquid that can discharge gear top or bottom, gear pump and the refrigerated warehouse with this gear pump that wholesomeness is good.
Claims (4)
1. a gear pump is characterized in that, comprising:
Driven and the actuation gear of rotation by driving source; Driven gear with this actuation gear engagement rotation; With the pump chamber that disposes described actuation gear and described driven gear, wherein
Described actuation gear and described driven gear are formed with respectively the intercommunicating pore that upper surface and lower surface are communicated with, with enter described actuation gear and described driven gear separately upper surface or the liquid of lower surface from described intercommunicating pore to downside or upside discharge.
2. gear pump as claimed in claim 1 is characterized in that:
Described actuation gear is formed with the live axle inserting hole of inserting logical live axle, and the drive shaft bearing section that is formed at upper surface of outer cover of supporting described live axle is the shape of giving prominence to more to the inside than described outer surface of outer cover.
3. gear pump as claimed in claim 1 is characterized in that:
Described actuation gear is formed with the live axle inserting hole of inserting logical live axle, described driven gear is formed with the swivel bearing axle inserting hole of inserting logical swivel bearing axle, the gap of the gap of described live axle inserting hole and described live axle and/or described swivel bearing axle inserting hole and described swivel bearing axle is the size that can insert logical described live axle or described swivel bearing axle and described actuation gear or the rotation of described driven gear one.
4. one kind refrigerated warehouse, it marks off chamber, refrigerated storage temperature territory and chamber, cryogenic temperature territory, and this refrigerated warehouse is characterised in that, comprising:
Be disposed at the water storing unit of chamber, described refrigerated storage temperature territory; Accept the ice making disk that supply water from described water storing unit with being disposed in the chamber, described cryogenic temperature territory, and have each described gear pump in the claim 1～3 that the water that sucks described water storing unit discharges to described ice making disk.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011215913A JP5683422B2 (en) | 2011-09-30 | 2011-09-30 | Gear pump and refrigerator equipped with the same |
| JP2011-215913 | 2011-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103032306A true CN103032306A (en) | 2013-04-10 |
| CN103032306B CN103032306B (en) | 2015-09-16 |
Family
ID=48019578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210275478.6A Expired - Fee Related CN103032306B (en) | 2011-09-30 | 2012-08-03 | Gear pump and the refrigerated warehouse with this gear pump |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5683422B2 (en) |
| KR (1) | KR101396955B1 (en) |
| CN (1) | CN103032306B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736360A (en) * | 2014-12-24 | 2016-07-06 | 日本电产三协株式会社 | Gear pump |
| CN105736361A (en) * | 2014-12-24 | 2016-07-06 | 日本电产三协株式会社 | Gear pump |
| CN109424543A (en) * | 2017-08-28 | 2019-03-05 | 株式会社捷太格特 | External gear rotary pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135993A (en) * | 1984-12-03 | 1986-06-23 | Nippon Denso Co Ltd | Rotary gear pump |
| JPH07127957A (en) * | 1993-11-08 | 1995-05-19 | Matsushita Refrig Co Ltd | Water supply unit |
| JPH07293453A (en) * | 1994-04-28 | 1995-11-07 | Sankyo Seiki Mfg Co Ltd | Gear pump |
| JP3561413B2 (en) * | 1998-06-25 | 2004-09-02 | 株式会社クボタ | Gear pump |
| CN201474964U (en) * | 2009-06-24 | 2010-05-19 | 王丽珍 | Water pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60107703A (en) * | 1983-11-17 | 1985-06-13 | Tdk Corp | Magnetic head |
| JP3532948B2 (en) * | 1994-01-31 | 2004-05-31 | 松下冷機株式会社 | Gear pump |
| JP2007162629A (en) | 2005-12-15 | 2007-06-28 | Toyota Industries Corp | Electric pump |
| JP3125540U (en) * | 2006-07-13 | 2006-09-21 | 株式会社島津製作所 | Gear pump or motor |
-
2011
- 2011-09-30 JP JP2011215913A patent/JP5683422B2/en not_active Expired - Fee Related
-
2012
- 2012-06-14 KR KR1020120063588A patent/KR101396955B1/en active IP Right Grant
- 2012-08-03 CN CN201210275478.6A patent/CN103032306B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135993A (en) * | 1984-12-03 | 1986-06-23 | Nippon Denso Co Ltd | Rotary gear pump |
| JPH07127957A (en) * | 1993-11-08 | 1995-05-19 | Matsushita Refrig Co Ltd | Water supply unit |
| JPH07293453A (en) * | 1994-04-28 | 1995-11-07 | Sankyo Seiki Mfg Co Ltd | Gear pump |
| JP3561413B2 (en) * | 1998-06-25 | 2004-09-02 | 株式会社クボタ | Gear pump |
| CN201474964U (en) * | 2009-06-24 | 2010-05-19 | 王丽珍 | Water pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736360A (en) * | 2014-12-24 | 2016-07-06 | 日本电产三协株式会社 | Gear pump |
| CN105736361A (en) * | 2014-12-24 | 2016-07-06 | 日本电产三协株式会社 | Gear pump |
| CN105736361B (en) * | 2014-12-24 | 2017-11-21 | 日本电产三协株式会社 | Gear pump |
| CN109424543A (en) * | 2017-08-28 | 2019-03-05 | 株式会社捷太格特 | External gear rotary pump |
| CN109424543B (en) * | 2017-08-28 | 2022-05-13 | 株式会社捷太格特 | External gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5683422B2 (en) | 2015-03-11 |
| KR20130035853A (en) | 2013-04-09 |
| CN103032306B (en) | 2015-09-16 |
| KR101396955B1 (en) | 2014-05-19 |
| JP2013076347A (en) | 2013-04-25 |
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