CN100546151C

CN100546151C - Hermetic compressor

Info

Publication number: CN100546151C
Application number: CNB200710100873XA
Authority: CN
Inventors: 金炳玖
Original assignee: Samsung Gwangju Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2006-08-03
Filing date: 2007-04-20
Publication date: 2009-09-30
Anticipated expiration: 2027-04-20
Also published as: KR20080012547A; BRPI0702256A; CN101117959A; JP2008038893A; JP4563419B2

Abstract

Disclose a kind of hermetic compressor, it can be by revising the operating efficiency that counterweight reduces manufacturing cost and improves compressor the syndeton of rotor.Described hermetic compressor comprises: stator; Rotor, described rotor with the electromagnetic interaction of described stator under rotate; Rotating shaft, described rotating shaft are securely passed described rotor to rotate with described rotor; Eccentric part, described eccentric part are formed on the end of described rotating shaft and sentence eccentric rotary when described rotating shaft is rotated; Counterweight, described counterweight are mounted to described rotor to prevent that described rotating shaft is because of described eccentric part eccentric rotary; And separating member, described separating member is provided for each counterweight is separated from described rotor.

Description

Hermetic compressor

The reference of related application

Current application requires to have the rights and interests of on August 3rd, 2006 at the 2006-0073500 korean patent application of Korea S Department of Intellectual Property application, and the disclosure of this application is merged in for reference herein.

Technical field

The present invention relates to a kind of hermetic compressor, and be specifically related to a kind of can be by revising the hermetic compressor that counterweight to the syndeton of rotor reduces manufacturing cost and improves compressor operation efficient.

Background technology

Generally speaking, hermetic compressor comprises: the closure casing that forms enclosure space; Compression unit, it is arranged in the closure casing and compresses the cold-producing medium that is inhaled into closure casing; And the driver element of drive compression unit.

Above-mentioned compression unit comprises: form the cylinder of discharge chambe, cold-producing medium is compressed in discharge chambe; Piston, it carries out straight reciprocating motion with compressed refrigerant in discharge chambe; And cylinder cover (cylinderhead), it is connected to cylinder with the seal compression chamber.The cold-producing medium that is inhaled into discharge chambe is compressed then and is discharged.

Driver element provides actuating force for above-mentioned compression unit.This driver element comprises: stator, and this stator is fixed in the closure casing; And rotor, this rotor be spaced apart the inside place that is arranged on stator and with the electromagnetic interaction of stator under rotate.This stator and rotor assembly play the effect of a motor.

As shown in fig. 1, the fastening vertically center of passing rotor 1 of rotating shaft 2 (securely).Rotating shaft 2 is formed with the eccentric part 2a of eccentric rotary at the place, end.Connecting rod 3 is installed between eccentric part 2a and the piston 4, is converted into the straight reciprocating motion of piston 4 with the eccentric rotary with eccentric part 2a.

In above traditional hermetic compressor, when rotor 1 rotates, produce centrifugal force at eccentric part 2a and connecting rod 3 places about rotating shaft 2, and produce inertia force at connecting rod 3 and piston 4 places.By the above power that when rotor 1 rotates, produces, rotating shaft 2 eccentric rotary at eccentric part 2a, connecting rod 3 and piston 4 places.In order to offset the eccentric rotary of rotating shaft 2, following counterweight 6 is installed in below the rotor 1.It is that the center is relative with eccentric part 2a that following counterweight 6 is arranged to rotating shaft 2.

Yet, because the centrifugal force that is produced by following counterweight 6 does not act on axis of reference O and the centrifugal force that is produced by eccentric part 2a and connecting rod 3 and the inertia force that is produced by connecting rod 3 and piston 4 act on axis of reference O, thus because of under the installation of counterweight 6 produce moment.

In order to offset the moment that produces because of the installation of descending counterweight 6, last counterweight 5 is installed in above the rotor 1.Last counterweight 5 is arranged to rotating shaft 2, and to be the center relative with following counterweight 6.Because compare with following counterweight 6, go up counterweight 5 that the position is set is longer apart from axis of reference O, want gently so go up under the weight ratio of counterweight 5 counterweight 6.

Upper and

lower counterweight

5 and 6 is mounted to rotor 1 by this way: make the rivet 7 that has retainer 7a at one end be inserted into and pass rotor 1 and upper and

lower counterweight

5 and 6, and the other end relative with retainer 7a of rivet 7 implemented ca(u)lk (caulking).

In order to make not eccentric rotary of rotating shaft 2, the power that is applied in the rotating shaft 2 should obtain balance.Suppose to represent the centrifugal force that eccentric part 2a and connecting rod 3 cause, represent the inertia force that connecting rod 3 and piston 4 cause, represent the centrifugal force that counterweight 5 causes with C with B with A, the centrifugal force that counterweight 6 causes under representing with D, then above factor should satisfy following formula 1.

A+B+C=D formula 1

Because each power of A, B, C and D is not applied on the identical axis, so produce moment because of each power.In order to make not eccentric rotary of rotating shaft 2, the moment that causes because of each power of A, B, C and D and should be zero.

Because power A and power B are applied on the axis of reference O, so the moment about axis of reference O that causes because of power A and power B is zero.

Yet, because power C and power D are applied in apart from axis of reference O certain distance, so produce moment.Suppose to represent distance between axis of reference O and the power C that represent distance between axis of reference O and the power D with L2, then above factor should satisfy following formula 2 with L1.

C * L1=D * L2 formula 2

In above traditional hermetic compressor, be fixed to rotor 1 with following counterweight 6 by rivet 7 because go up counterweight 5, so distance L 1 and L2 are nonadjustable.Therefore, the weight of last counterweight 5 and following counterweight 6 should at will do not determined, and should be confirmed as satisfying simultaneously formula 1 and formula 2.

Yet the upper and

lower counterweight

5 and 6 the weight that can satisfy formula 1 and formula 2 simultaneously are heavier, thereby cause the manufacturing cost of counterweight to increase.

And, heavier counterweight is installed to the operating efficiency that rotor has improved the power consumption of operate compressor and reduced compressor.

Summary of the invention

Made the present invention in order to overcome the above problems.An aspect of of the present present invention is to provide a kind of hermetic compressor, and it can reduce the weight that is mounted to the counterweight of rotor in order to prevent the rotating shaft eccentric rotary, thereby reduces cost for manufacturing compressor and improve the operating efficiency of compressor.

With consistent on the one hand, exemplary embodiment of the present invention provides a kind of hermetic compressor, and it comprises: stator; Rotor, described rotor with the electromagnetic interaction of described stator under rotate; Rotating shaft, described rotating shaft are securely passed described rotor to rotate with described rotor; Eccentric part, described eccentric part are formed on the end of described rotating shaft and sentence eccentric rotary when described rotating shaft is rotated; Counterweight, described counterweight are mounted to described rotor to prevent that described rotating shaft is because of described eccentric part eccentric rotary; And separating member, described separating member is provided for each counterweight is separated with described rotor.

Described hermetic compressor further comprises the rivet that is used for each counterweight is fixed to described rotor.Described separating member is formed on described rivet place.

Described separating member has predetermined height, so that each counterweight is arranged to apart from described rotor certain distance.

Described separating member comprises a pair of supporting projections, and described a pair of supporting projections is spaced from each other, so that each counterweight is arranged to apart from described rotor certain distance.

Described rivet comprises: first extension, and described first extension begins to extend to pass described rotor from described separating member; And second extension, described second extension begins to extend to pass each counterweight along the direction opposite with described first extension from described separating member.

Each described counterweight is fixed to described rotor by ca(u)lk is implemented at the two ends of described rivet.

Described separating member is formed up to predetermined altitude in the top surface or the bottom surface projection of each counterweight.

Another counterweight of weak point will be gently to be arranged to be arranged to the described eccentric part distance of distance in the described counterweight in the described counterweight of weight ratio of described eccentric part distance than a counterweight of length.

An aspect that the present invention adds and/or an advantage part will be illustrated in narration subsequently, and a part will be the narration in conspicuous, maybe can realize by enforcement of the present invention.

Description of drawings

From subsequently in conjunction with the accompanying drawings the description to embodiment, these of exemplary embodiment of the present invention and/or other aspects and advantage will become apparent and be more readily understood, in the accompanying drawings:

Fig. 1 is a cutaway view, and the rotor of counterweight is installed in the diagram conventional hermetic-type compressor;

Fig. 2 is a cutaway view, illustrates hermetic compressor according to an embodiment of the invention;

Fig. 3 is a perspective view, and the rotor of counterweight is installed in the hermetic compressor of being painted in the pictorial image 2;

Fig. 4 is a perspective view, and the counterweight that diagram is used for that Fig. 3 is painted is fixed to the rivet of rotor;

Fig. 5 is a perspective view, and the counterweight that diagram is used for that Fig. 3 is painted is fixed to the modification of the rivet of rotor;

Fig. 6 is a perspective view, illustrates the rotor that counterweight is installed in the hermetic compressor according to another embodiment of the present invention; And

Fig. 7 is a perspective view, and the counterweight that diagram is used for that Fig. 6 is painted is fixed to the rivet of rotor.

Embodiment

Now will be in detail with reference to exemplary embodiment of the present invention, the example view of these embodiment in the accompanying drawings, wherein same Reference numeral is all represented same element.Below by with reference to the accompanying drawings described embodiment being described to explain the present invention.

Fig. 2 is a cutaway view, illustrates hermetic compressor according to an embodiment of the invention.As shown in FIG., hermetic compressor comprises according to an embodiment of the invention: closure casing 10; Compression unit 20, compression unit 20 are arranged in the closure casing 10 and compressed refrigerant; And driver element 30, driver element 30 gives compression unit 20 supply actuating forces.

Suction pipe 11 is connected to closure casing 10, and the low pressure refrigerant of the evaporator by kind of refrigeration cycle enters closure casing 10 with guiding.Discharge pipe 12 also is connected to closure casing 10, is directed to the condenser of kind of refrigeration cycle with the high-pressure refrigerant that will be compressed unit 20 compressions in the closure casing 10.

Compression unit 20 comprises: cylinder 21, and cylinder 21 and framework 15 integrally formed and formation discharge chambe 21a, cold-producing medium is compressed in discharge chambe 21a; Piston 22, piston 22 are arranged in the discharge chambe 21a, to carry out straight reciprocating motion; Cylinder cover 23, cylinder cover 23 are connected to cylinder 21 with seal compression chamber 21a, and the cold-producing medium that is communicated with discharge pipe 12 is discharged chamber 23b and the cold-producing medium suction chamber 23a that is communicated with suction pipe 11 separates and is arranged in the cylinder cover 23; And valve gear 24, valve gear 24 is installed between cylinder 21 and the cylinder cover 23, flows with control suction discharge chambe 21a with from the cold-producing medium that discharge chambe 21a discharges.

Driver element 30 provides actuating force, so that piston 22 carries out straight reciprocating motion in discharge chambe 21a.Driver element 30 comprises: stator 31, and stator 31 is fixed to the top of framework 15; Rotor 32, rotor 32 are arranged on the inside place of stator 31, and with the electromagnetic interaction of stator 31 under rotate; With rotating shaft 33, the center of rotor 32 is securely passed in rotating shaft 33 vertically, to rotate with rotor 32.

Rotating shaft 33 is supported rotationally by bearing 13, and bearing 13 is supported by framework 15.The bottom of rotating shaft 33 is passed below opening 16 places that are formed on framework 15 centers and the bottom that extends to framework 15.The lower end that extends to the rotating shaft 33 below the bottom of framework 15 is formed with eccentric part 33a.When rotating shaft 33 is rotated, eccentric part 33a eccentric rotary.

Connecting rod 25 is installed between eccentric part 33a and the piston 22, is converted into the straight reciprocating motion of piston 22 with the eccentric rotary with eccentric part 33a.

In above hermetic compressor, by the electromagnetic interaction between stator 31 and the rotor 32, rotating shaft 33 is rotated with rotor 32, and, piston 22 carries out straight reciprocating motion in discharge chambe 21a, wherein, piston 22 is connected to the eccentric part 33a of rotating shaft 33 by connecting rod 25.

When rotor 32 rotates, as shown in Figure 3,33 produce centrifugal force A and produce inertia force B around the shaft at connecting rod 25 and piston 22 places at eccentric part 33a and connecting rod 25 places.

The eccentric rotary of the rotating shaft 33 that centrifugal force A that produces when rotating because of rotor 32 in order to offset and inertia force B cause, following counterweight 45 is installed in below the rotor 32.

Yet,, produce moment about axis of reference O because the centrifugal force F that following counterweight 45 is produced does not act on identical axis with power A and B.

In order to offset because of the moment that time counterweight 45 produces has been installed, last counterweight 40 is installed in rotor 32 tops.Last counterweight 40 is arranged to rotating shaft 33, and to be the center relative with following counterweight 45.Because it is far away than following counterweight 45 that last counterweight 40 is configured to apart from the distance of axis of reference O, want light so that offset the moment that counterweight 45 is down produced so go up counterweight 45 under the weight ratio of counterweight 40.

Last counterweight 40 is arranged to leave the top surface of rotor 32, and following counterweight 45 is arranged to leave the basal surface of rotor 32.

Fig. 4 shows rivet 50, and rivet 50 is used for upper and

lower counterweight

40 and 45 is fixed to rotor 32, thereby counterweight 40 and following counterweight 45 are separated with the top surface and the basal surface of rotor 32 respectively.

As shown in Figure 4, the rivet 50 that is used for upper and

lower counterweight

40 and 45 is fixed to rotor 32 has separating member 55.One end of separating member 55 closely contacts rotor 32, and the other end of separating member 55 closely contacts counterweight 40 or 45.Separating member 55 is not the middle place that is formed on rivet 50, and is formed in the wherein position of an end at contiguous two ends.

Rivet 50 comprises first extension 51 and second extension 52, wherein, first extension 51 extends long passing rotor 32 from separating member 55, and second extension 52 extends short in to pass

counterweight

40 or 45 along the direction opposite with first extension 51 from separating member 55.And the two ends of rivet 50 form porose 50a respectively, so that implement ca(u)lk.

Last counterweight 40 is fixed to rotor 32, make first extension 51 of rivet 50 be inserted into the through hole 32a that passes rotor 32 from the top of rotor 32, use anchor clamps (jig) that ca(u)lk is implemented in the end of first extension 51 in the bottom surface of rotor 32, second extension 52 is inserted into the through hole 40a that passes counterweight 40 from the bottom of last counterweight 40, uses anchor clamps that ca(u)lk is implemented in the end of second extension 52 at the top surface place of last counterweight 40.

Can will descend counterweight 45 to be fixed to rotor 32 by going up the method that counterweight 40 is fixed to rotor 32 more than the same utilization.

As shown in Figure 3, when the rivet 50 that utilizes present embodiment was fixed to rotor 32 with upper and

lower counterweight

40 and 45, it was the height H of separating member 55 that upper and

lower counterweight

40 and 45 is arranged to leave respectively the top surface of rotor 32 and basal surface and separating distance.

As mentioned above, because following counterweight 45 is installed into the basal surface that leaves rotor 32, so compare with conventional hermetic-type compressor, the distance L 4 between axis of reference O and the following counterweight 45 becomes shorter.Therefore, because of being installed, the moment that time counterweight 45 causes reduces.As a result, the weight of following counterweight 45 also reduces.

On the other hand, because last counterweight 40 is installed into the top surface that leaves rotor 32, so compare with conventional hermetic-type compressor, the distance L 3 between axis of reference O and the last counterweight 40 becomes longer.

Corresponding to because of reducing of moment that time counterweight 45 causes has been installed,, the moment that last counterweight 40 causes also should reduce because of being installed.And, because the distance L 3 between axis of reference O and the last counterweight 40 increases, can significantly reduce so go up the weight of counterweight 40.

As mentioned above, because upper and

lower counterweight

40 and 45 is arranged to leave rotor 32, so the weight of

counterweight

40 and 45 can reduce.

Fig. 5 shows the modification of rivet 50, and rivet 50 is used for upper and

lower counterweight

40 and 45 is fixed to rotor 32, thus make upper and

lower counterweight

40 and 45 and rotor 32 separate.

Modified rivet 50 shown in Fig. 5 is formed with separating member 55, and separating member 55 comprises a pair of supporting projections 55a and 55b.Supporting projections 55a and the 55b segment distance H that is spaced from each other.Therefore, upper and

lower counterweight

40 and 45 is arranged to leave rotor 32 1 segment distance H.

Fig. 6 shows the rotor that counterweight is installed in the hermetic compressor according to another embodiment of the present invention.

As shown in Figure 6, last counterweight 40 and following counterweight 45 form as one with separating member 60, and separating member 60 is used for last counterweight 40 and following counterweight 45 are separated a preset distance with rotor 32.

Separating member 60 is formed up to predetermined altitude in the top surface or the bottom surface projection of upper and lower counterweight 40 and 45.The stress that the thickness of preferable separate member 60 produces when just in time enough standing to connect rivet is so that minimize the weight of

counterweight

40 and 45.

When the

counterweight

40 and 45 that is formed with separating member 60 is mounted to rotor 32, as shown in Figure 7, use the rivet 50 that only is formed with supporting projections 50b at one end.

Counterweight

40 and 45 can be mounted to rotor 32 by this way, the through hole 32a that makes the rivet of being painted among Fig. 7 50 be inserted into to pass rotor 32 and the through hole 40a and the 45a of

counterweight

40 and 45, and, use anchor clamps that the other end of the rivet 50 that do not form projection 50b is implemented ca(u)lk.Like this, owing to have only an end to be implemented ca(u)lk in the two ends of rivet 50, the ca(u)lk operation reduces.

In this embodiment, separating member is formed on counterweight place (with reference to Fig. 6), yet separating member can be formed on the counterweight place.Separating member can separate with counterweight to be made and is inserted between counterweight and the rotor.

Apparent from the above description, closed compressor according to the present invention is constructed such that counterweight is installed into apart from the rotor certain distance.Therefore, the weight of counterweight reduces.

The reducing of counterweight weight makes the manufacturing cost of counterweight reduce, and the power consumption of operate compressor reduces, and improved the operating efficiency of compressor.

Although illustrated and described embodiments of the invention; yet those skilled in the art can understand; can make variation to described embodiment under the situation that does not break away from principle of the present invention and marrow, protection scope of the present invention is limited in claim and the equivalent thereof.

Claims

1. hermetic compressor comprises:

Stator;

Rotor, described rotor with the electromagnetic interaction of described stator under rotate;

Rotating shaft, described rotating shaft securely pass described rotor, to rotate with described rotor;

Eccentric part, described eccentric part be formed on the end place of described rotating shaft, with eccentric rotary when described rotating shaft is rotated;

Counterweight, described counterweight be mounted to described rotor, to prevent that described rotating shaft is because of described eccentric part eccentric rotary;

Separating member, described separating member are provided for making each counterweight to separate with described rotor; And

Be used for each counterweight is fixed to the rivet of described rotor,

Wherein, described separating member is formed on described rivet place, and described separating member comprises a pair of supporting projections, and described a pair of supporting projections is spaced from each other, so that each counterweight is arranged to apart from described rotor certain distance.

2. hermetic compressor as claimed in claim 1, wherein, described separating member has predetermined height, so that each counterweight is arranged to apart from described rotor certain distance.

3. hermetic compressor as claimed in claim 1, wherein, described rivet comprises: first extension, described first extension begins to extend to pass described rotor from described separating member; And second extension, described second extension begins to extend to pass each counterweight along the direction opposite with described first extension from described separating member.

4. hermetic compressor as claimed in claim 3, wherein, each described counterweight is fixed to described rotor by two ends enforcement ca(u)lk or the processing to described rivet.

5. hermetic compressor as claimed in claim 1, wherein, described separating member is formed up to predetermined altitude in the top surface or the bottom surface projection of each counterweight.

6. hermetic compressor as claimed in claim 1, wherein, the weight of another counterweight of weak point will be gently to be arranged to be arranged to the described eccentric part distance of distance in the described counterweight in the described counterweight of weight ratio of described eccentric part distance than a counterweight of length.