CN110234879A

CN110234879A - Coolant compressor

Info

Publication number: CN110234879A
Application number: CN201780073823.9A
Authority: CN
Inventors: R·阿尔姆鲍尔
Original assignee: Nydek Global Application Germany Ltd
Current assignee: Nydek Global Application Germany Ltd; Secop GmbH
Priority date: 2016-11-29
Filing date: 2017-11-29
Publication date: 2019-09-13
Also published as: WO2018099995A1; EP3548747A1; AT15704U1; US20200386216A1

Abstract

The present invention relates to a kind of coolant compressors, include electric drive unit；Cylinder housing (1)；It can be by crankshaft (3) that the electric drive unit drives；And piston (2), the piston can be driven by the crankshaft (3) and the guidance in the swept volume of the cylinder housing (1), for periodically compressing refrigerant, the refrigerant can be transported in the swept volume by suction valve, which includes suction opening (7) and by stroke close the valve closing element (8) of the suction opening (7), preferably valve spring.It is arranged according to the present invention to have manipulation device (14 in order to guarantee the lasting open movement of suction valve during aspiration stroke；15,23) it, is configured to by stroke open the valve closing element (8).

Description

Coolant compressor

Technical field

The present invention relates to a kind of coolant compressors, include electric drive unit；Cylinder housing；It can be by the electric drive list The crankshaft of member driving；And piston, the piston can be driven by the crankshaft and be guided in the swept volume of the cylinder housing, For periodically compressing refrigerant, which can be transported in the swept volume by suction valve, the suction valve Including suction opening and by stroke close the valve closing element (preferably valve spring) of the suction opening.

In most cases, cylinder cover component is fixed on cylinder housing, and cylinder cover component includes suction opening and by stroke closes Close the valve closing element of suction opening.In general, cylinder cover component also includes: valve plate, it is open with suction opening and pressure；And Cylinder head cover is constructed together with valve plate by hermetically cavity.Here, the valve closing element of suction valve is usually placed in the court of valve side To that side of piston, and the valve closing element for by stroke closing pressure opening of pressure valve be arranged in valve plate away from piston That side.Here, suction valve and pressure valve usually have valve spring as valve closing element.Between valve plate and cylinder housing or Sealing element is usually arranged between valve plate and cylinder head cover, preferably in the form of flat seal.In general, valve plate passes through cylinder head cover pressure Onto cylinder housing.

Background technique

Coolant compressor especially has the refrigerant compression of the compressor housing that can closely encapsulate closely encapsulated Machine comes known and is mainly applied in cooling electric appliance (such as refrigerator or refrigerator-freezer) from long-time.Refrigerant process itself Also known from coming for a long time.Here, by making refrigerant heating and most in evaporator from the Spatial absorptive energy to be cooled down It overheats afterwards and passes through piston-cylinder units (exactly by cylinder by coolant compressor (also referred to as refrigerant supercharger) The piston translationally moved in shell) higher stress level will be pumped it to, there, refrigerant releases heat by condenser And it is delivered back into evaporator again by throttle valve (realizing refrigerant pressure reduction and cooling wherein).By being driven by electricity The crankshaft of moving cell driving realizes the movement of the piston.The electric drive unit generally includes stator and rotor, wherein the rotor It is connect with crankshaft to anti-torsion, to drive piston-cylinder units.

During crank rotation, piston is during aspiration stroke linearly from top dead centre (in piston base in top dead centre To the distance between valve plate minimum) it is moved to lower dead center (maximum to the distance between valve plate in piston base in lower dead center), In, so that refrigerant is flowed into or is sucked in the cylinder constructed by cylinder housing by suction opening from the crank angle of restriction.Tight Then in compression stroke, valve plate closes suction opening and piston linearly moves from bottom dead center to top dead center, wherein is in Refrigerant in cylinder is compressed.From the crank angle of restriction, pressure valve is opened and the refrigerant compressed is open through excess pressure It is flowed out from cylinder.

According to the prior art, in aspiration stroke, when the low pressure by being constructed in cylinder due to piston motion is applied to pumping When opening force on suction valve is greater than the closing forces of suction valve, suction valve is just opened.In general, the closing forces of suction valve are due to suction valve The spring constant of valve spring be fixed.Nowadays the shortcomings that prior art, is, go out in the case where aspirating valve opening movement The state not limited now: as long as opening force is big as closing forces approximation, suction valve is opened and refrigerant flows into cylinder.But Thus low pressure is reduced, and the opening force being correspondingly applied on suction valve also reduces, so that suction valve should undergo opening at it originally Closing movement has actually been carried out during movement.Then, " runout " that suction valve occurs in certain crank angle range, Its interior suction valve does not execute continuous open movement, but one or phase are opened or even undergone in the ground that only pauses during this period After multiple closing movements.The amount that the refrigerant in cylinder is on the one hand generally reached during aspiration stroke as a result, is reduced, this causes to make The efficiency of refrigerant compressor reduces.On the other hand, the wave of the refrigerant in refrigerant circulation is caused due to " runout " of suction valve Dynamic, this causes the noise level for undesirably improving coolant compressor.

Goal of the invention

The task of the present invention is, the shortcomings that overcoming the prior art and a kind of coolant compressor is proposed as a result, in the system Guarantee the lasting open movement of suction valve in refrigerant compressor during aspiration stroke.

Summary of the invention

The task solves in the following way in the coolant compressor according to the present invention for the type being initially mentioned: setting A kind of manipulation device is set, the valve closing element of suction valve can by stroke be opened by the manipulation device.The commanding apparatus as a result, It is configured to by stroke open valve closing element." by stroke " it is meant that the manipulation device in principle in working cycles Each aspiration stroke in open valve closing element, wherein working cycles correspond to a circle rotation of crankshaft.In other words It says, during the operation of coolant compressor, multiple working cycles is successively undergone during the operation, in each working cycles Aspiration stroke in open the valve closing element.

Here, manipulation device according to the present invention is the device being additionally provided in relative to piston, the piston exists really Valve spring is opened only by the suction refrigeration agent in aspiration stroke according to the prior art in the case where valve spring.According to this hair Bright manipulation device, which can be implemented separately, opens suction valve or (as in the case where valve spring) relative to piston support Implement to property.Therefore, for the latter the case where, is settable, and valve closing element can be beaten only supportively by the manipulation device It opens.

Generally speaking, thus the task solves in the following way: not passively or not only only passively by The low pressure formed in cylinder during aspiration stroke opens suction valve, but opens suction actively by the manipulation device Valve, to prevent " runout " of suction valve.

The present invention is settable, and the manipulation device has a contact area section, at the contact area section and the valve closing element In engagement or engagement can be formed, wherein the valve can by stroke be opened by the movement of the contact area section and closed Element.Therefore, the manipulation device is configured to by stroke open the valve closing member by the movement of the contact area section Part.The implementation modification is corresponding with the mechanical handling of the valve closing element.Here, the contact area section movement and the valve Closing element is opened.Here, the contact area section can fixedly be connect with the valve closing element and by the manipulation device Another element manipulation.Thus, for example valve closing element can have contact area section, it is outside that the contact area section passes through suction opening It protrudes and is manipulated in the outside of suction opening by another element of the manipulation device.Alternatively, one side of contact area section Face is fixedly connect with valve closing element, on the other hand (individual element or connection directly as the manipulation device Cross other elements) it also mechanically connect with piston and is manipulated by piston, thus () which passes through it in aspiration stroke In movement valve closing element is mechanically opened by pulling force.Alternatively, the contact area section fixedly with the manipulation device Another element connect and at least by stroke be brought to in the engagement of valve closing element.Here, the contact area section is only The valve closing element can be touched during the determination stage of aspiration stroke, but can not be touched the valve during compression stroke and be closed Close element.Alternatively, the contact area section also touches the valve closing element during compression stroke, but during compression stroke not It applies force on valve closing element.

A kind of embodiment setting, the contact area section are in that side away from piston of the valve closing element and contact In or can form contact, apply pressure will pass through and open valve closing element.The embodiment can be in existing refrigerant It is simply implemented in the case of compressor, because not needing the attaching elements in swept volume or on piston.The embodiment party Formula allows controllably to regulate and control by the manipulation device opening of suction valve, and does not interfere the function of coolant compressor herein, And by the constituent of the manipulation device quantity is kept as few as possible.Suction valve be generally oriented towards cylinder direction open and It is arranged in that side towards piston of valve plate.When aspiration stroke starts, by apply pressure to suction valve away from piston On that side, released from suction valve away from that side of piston in other words by by suction valve, can in a particularly simple way and The lasting open movement of method guarantee suction valve.

The present invention is settable, the case where the refrigerant pressure on the two sides of the valve closing element is in equilibrium state Under, it can introduce and open the valve closing element by the manipulation device.This demonstrate the ideals for being used to open valve closing element It time point and will avoid " runout " anyway.Although occurring in the crank angle range that the time point determines one, with Corresponding pressure, dead zone (Schadraum) are related to piston speed.The time point can be for example by valve closing element two sides Pressure measurement is sought, and the manipulation device can be correspondingly manipulated.

Because " runout " effect by stroke occurs in restriction, the crank angle range that can draw distinction in accordance with respectively, institute It is sufficient that with embodiment according to the present invention, by stroke is opened by manipulation device according to the crank angle of crankshaft Suction valve, thus occur in that crank angle range of " runout " at least in conventional refrigerants compressor, operating element Contact area section is with suction valve in contacting.Therefore, the manipulation device is configured to the crank angle according to crankshaft by stroke Open valve closing element in ground.Occur when preventing and with the contact of the contact area section of operating element at " runout " as a result, Closing movement.So being frequently advantageous that, 90 ° to the 60 ° crank angles of the contact area section before top dead center (are being taken out Before suction stroke starts) it just contacted suction valve, preferably continued contacted suction valve.Here it is particularly advantageous that compressing During the major part of stroke, the contact area section does not contact suction valve, to prevent the undesirable opening of suction valve.Only soon open Before beginning aspiration stroke, settable contact.Also it is contemplated that suction valve during aspiration stroke, at least after open movement Through being unclamped by contact area section, to not hinder suction valve to open at the end of aspiration stroke or in compression stroke by contact area section Usual unexpected closing movement when the beginning.

It is not settable only in view of interference of the contact area section when suction valve is closed, it can be by stroke by the manipulation device Valve closing element is closed on ground.This is for example in this way, when contact area section and piston machine in the suction valve situation of complete active Ground is in this way when connecting.Alternatively, when setting is fixedly connected between manipulation device, contact area section and valve closing element, so that Valve closing element is not only pressed onto open position by contact area section, but also again draws valve closing element into closed position.

In order to simple and cost-effective ways and means realize suction valve open movement correlation, in a kind of reality Apply in mode and be arranged, the manipulation device is mechanically coupled with the crankshaft because crank angle and thus aspiration stroke and Compression stroke must be also defined by the crank angle of crankshaft.Here, the manipulation device includes such as outside swept volume Lower-pilot element, the operating element have can be formed with valve closing element the contact area section that contact or at valve closing element Contact area section in contact.Therefore, there is no need to --- usually expensive --- additional electrical control unit or actuator.It should Mechanical coupling can be associated with by different dynamics and be realized.As described in detail below, settable single (example Such as rod-type constructing) operating element.However, as it is contemplated that the manipulation device includes one or more other behaviour Vertical element, the operating element are mutually in effect connection.

It is arranged in a kind of implementation modification of the invention, the operating element is hingedly attached on cylinder housing or is attached On the cylinder head cover of cylinder cover component.In general, the cylinder cover component includes valve plate and cylinder head cover, and the cylinder cover component is fixed on On the front side of cylinder housing.Operating element is simply attached on cylinder head cover in order to realize or is had existed on cylinder housing Permanent opening on, these components are particularly well suited to the attachment of operating element.The hinged attachment can be realized manipulation The pendulum motion of element, therefore can be realized in manipulation device in kinetically easily controlled movement process.Equally, pass through It is fixed on cylinder cover component or is realized on cylinder housing and spatially close on suction valve.

Another implementation modification setting of coolant compressor according to the present invention, the operating element is can surround swinging axle The mode of swing supports, and the swinging axle is parallel to the longitudinal axis orientation of crankshaft.Guaranteed by this orientation of the swinging axle, The contact area section is parallel in the plane of the axially bored line orientation of suction opening at one and moves, wherein the direction of the axially bored line Substantially correspond to the opening direction of suction valve.Therefore, the open movement of suction valve can be supported advantageously.Equally, described This orientation of swinging axle is usually premised on operating element is about the lateral arrangement of cylinder housing, because no matter in cylinder cover component It is available that enough installation spaces are usually free of in the upside of crankshaft longitudinal axis or downside, because of the installation Space is for example sucked muffler and/or compression muffler or is occupied by the upper half of compressor housing.

One kind of coolant compressor according to the present invention is preferred to implement modification setting, and the manipulation device has and institute The operator region for stating operating element is in the control element acted in contact, is attached on crankshaft to the control element anti-torsion, Wherein, operating element and control element are constructed so that the rotary motion of crankshaft the operating element can be transformed at least The pendulum motion or translational motion of contact area section.It (is especially grasped by remaining component part of the control element and manipulation device Vertical element) interaction, the mechanical couplings of crankshaft and contact area section can be simply implemented.In operator region and control element Between effect connection can for example be established by directly contacting or passing through the intermediate connection of other operating element.Here, The control element can for example be configured to cam-like, thus due to control element side about crankshaft longitudinal axis radial distance not The element of manipulation device sticked on control element is promoted to deviate in radial directions about crankshaft longitudinal axis together.Another In the implementation modification of kind substitution, the control element can also have mountain peak and mountain valley shape on the upside or downside of control element The protuberance and recess of formula, promote the element of manipulation device sticked on control element about crankshaft longitudinal axis in the axial direction Upper offset.

If the operator region of operating element is bearing directly against on control element, pass through control in the case where crankshaft rotation Element processed deviates operator region.Therefore, it can be realized in principle by control element and the rotation of crankshaft is transformed into contact zone The translational motion of section.If operating element is configured to bar, contact area section can be realized around the pendulum motion of the rotation point of bar. When correspondingly selecting dynamic (dynamical) correlation, the pendulum motion of the contact area section is still corresponding approximately to translational motion.

In another preferred implementation modification, manipulation device is made of operating element and control element, therefore need not be arranged In addition movable building block sticks on control element for what the spin dynamics of crankshaft to be transformed into operating element Operator region translational motion or pendulum motion.

Energy in order to realize the manipulation device is simple and the structure cost-effectively establishing or assemble, of the invention another It is arranged in one implementation modification, the control element, which has, is in the guide surface in contacting with the operator region of the operating element, Wherein, which prejudicially constructs relative to the longitudinal axis of the crankshaft.By the contact between guide surface and operator region, Directly occur to cause the offset of operator region due to the eccentric configuration of guide surface.Here, the guide surface can for example be configured to control The side surface of element processed, the control element are configured with the eccentric part of the cross section of circular.Here, may also set up bullet Operator region is pressed to control element by spring element, the spring element, to guarantee between control element and operator region Contact.It is natural herein directly to be contacted it will be appreciated that working as and not existing with operator region, but centre is connected with manipulation device When one or more component part, also it is contemplated that the guide surface constructed in this way.

It is arranged in another preferred implementation modification of the invention, the guide surface is by being arranged in the court of the control element The groove construction that crankshaft or on the end face of crankshaft, annular extends.Pass through the collective effect of groove and operator region (wherein, the operator region can such as pin-shaped or bolt shape construct), be arranged in groove to operator region at least section. Move operator region not only radially outward but also radially inwardly during crankshaft rotation by control element, without Apply on additional power (such as spring force) to operator region to promote to be offset inward.Here, the groove is configured to close ring, Such as with circular or oval grooved tracks, wherein two side surface configurations guide surfaces of the groove.It makes an uproar to reduce Sound level and crankshaft imbalance is avoided to run, it is advantageous to which control element has the shape about crankshaft longitudinal axis rotational symmetry.

One kind of coolant compressor according to the present invention is preferred to implement modification setting, and the operating element has rod Matrix, wherein the first lever arm of the matrix has the operator region, and the second lever arm of the matrix has the contact zone Section.Since the rod-shape of described matrix can be using simple controllable dynamic (dynamical) correlation, to pass through described two lever arms Configuration and size and by position lever arm rotation point (the rotation point be commonly used in operating element in coolant compressor On articulated connection), can accurately limit the movement of contact area section.Here, the not only contact area section but also the manipulation Section moves on the swinging track around lever arm rotation point.

In order to which operating element to be hingedly attached on cylinder cover component, it is arranged in another implementation modification, the cylinder cap group The cylinder head cover of part is configured to the supporting part of the operating element or bracket is fixed on the cylinder head cover of the cylinder cover component, The framework construction is used for the supporting part of the operating element.Since cylinder head cover is usually attached on cylinder housing by fixing element The available installation space of actual conditions, and it is spatially near suction valve, so that cylinder head cover is particularly well-suited for Construct the supporting part of operating element.Especially in the case where installing manipulation device additional to existing cylinder head cover advantageously, the branch Bearing portion is by being fixed on the framework construction on cylinder head cover (preferably by the fixing element itself for fixing cylinder head cover).Here, former Then above advantageously, the supporting part is used to support the rotation point of rod matrix.

In order to which (this is for by the movement of contact area section and crankshaft for the geometry configuration of the rod matrix of the operating element Mechanical couplings are necessary), it is arranged in another implementation modification of coolant compressor according to the present invention, the operating element Matrix have at least one bending part, preferably each lever arm have at least one bending part, wherein bending part axis distinguish base Orient while the longitudinal axis of crankshaft is parallel in sheet.Guarantee that described matrix has at least one by the orientation of bending part axis A continuous basic side, wherein construct to described matrix preferred planar.Here, the bending part have 60 ° and 160 ° it Between, the angle model especially between 90 ° and 160 °, preferably between 110 ° and 150 °, particularly preferably between 120 ° and 140 ° It encloses.In a kind of advantageous implementations modification, the first lever arm between 115 ° and 145 ° at least one bending part, preferably two A bending part, and the second lever arm has about 90 ° of +/- 10 ° of bending parts.Herein, it is advantageous to which the second lever arm surrounds in this wise Cylinder head cover, so that contact area section is aligned with suction opening.

In order to make refrigerant pass through the flow losses that suction valve flows by manipulation device (particularly by contact area section) It keeps as small as possible, is arranged in another implementation modification of the invention, the cross-sectional area ratio of the contact area section of the operating element The cross-sectional area of the suction opening is small.Herein, it is advantageous to which the cross-sectional area of contact area section is the cross-sectional area of suction opening Most 10%, preferably up to 5%, it is especially most 2.5%, especially preferably less than 2.5%.

It is arranged in the particularly preferred implementation modification of one kind of coolant compressor according to the present invention, the contact area section It is constructed by the contact element of (especially by spring wire or be made of plastics) elasticity.Due to the elastic characteristic, especially The elastic characteristic of spring wire perhaps plastics can reach one kind or reach a variety of following advantageous effects: due to the contact element The flexibility of part, contact area section can just have been brought into the contact with suction valve in discharge stroke end, without this this When open suction valve because the contact element is resiliently bent.By the spring constant and suction valve that are adapted to contact element Or the spring constant of suction valve valve spring, the opening time point of suction valve can be adjustable accurately.When the operating element When region that contact element with rod matrix and operating element is fixed thereon carries out pendulum motion, when contact area section extremely When guiding in guide portion to few section, the pendulum motion of contact area section can be compensated by flexible deformation, to make to contact Section and thus make by contact area section contact suction valve only linearly move.Contact is constituted when substituting spring wire by plastics When element, it can realize herein by selection plastics, by thickness and shape (straight or curved) as applied spring wire Such elastic characteristic.

Another particularly preferred implementation modification setting, the contact element plane earth construct and have curved bonding pad Section, wherein the matrix of the preferred rod of the operating element is connect by the jointing with the contact area section when necessary.Pass through Plane earth structural contact element can particularly simply influence the elastic characteristic of contact element by geometric configuration.Contact element Elastic characteristic can be adjusted by curved jointing and be set, and the curved jointing is for example bent in this wise, so that manipulation The pendulum motion of element is compensated basically by the distortion of jointing rather than is compensated by the bending of contact area section.

Another particularly preferred implementation modification setting according to the present invention, the contact area section are arranged essentially parallel to the pumping The axially bored line for inhaling opening extends ground setting, and the jointing has at least one v-shaped bending portion, wherein is connect by described The plane of touching element construction orients with being preferably parallel to the longitudinal axis of the crankshaft.At least section of the contact element it is arranged Contact area section usual linear extension inside cylinder cover component, for example inside cylinder head cover or inside pumping muffler ground structure It makes, the flow losses during being flowed into avoid refrigerant.The above-mentioned bending of the jointing can be by jointing at least It realizes in one v-shaped bending portion.Here, being understandably the linear structure unrelated with the curved shape of contact area section naturally It is advantageous.Guarantee that the movement of operating element, which can be directly used in, continues suction valve by the construction of the plane of contact element It opens on ground.

It is arranged in another particularly preferred implementation modification of the invention, the contact area section of the operating element at least section Ground guides in the hole of the cylinder head cover of the cylinder cover component and/or in the hole of pumping muffler, preferably in pumping muffler It is guided in the hole of outlet.Since the outside of cylinder cover component is arranged in not influence the stream of refrigerant in the major part of the manipulation device It moves and in order to be overlapped on the distance between crankshaft and suction valve, it is necessary that at least described contact area section is directed to cylinder cap group The inside of part, suction valve can be contacted.Therefore, it is necessary to the entrance entered in cylinder cover component is provided for the contact area section, The entrance can also be used as guide portion simultaneously.The entrance is implemented to be realized in modification by the hole in cylinder head cover in determining.In general, setting Pumping muffler is set, the outlet of the pumping muffler is directly connect with suction opening.Therefore, in corresponding cylinder cover component, Hole in pumping muffler is necessary, and contact area section is directed to suction valve.If the outlet of pumping muffler is by cylinder cap The section of cover is pressed on valve plate, then can be needed, and the hole crosses cylinder head cover and crosses the outlet of pumping muffler.

Other than the bar for being embodied as operating element can substantially swing, the operating element that can translationally move is also can Capable.Here, the operating element includes: the first especially straight section, it is flat that first section can be parallel to the piston Move ground movement；And curved second section, second section cooperate the suction opening from rear and carry contact zone Section, translationally moves so that the contact area section can also be parallel to the piston.(control element is antitorque for the control element Turn ground to be attached on crankshaft) can have guide surface with operating element in contact, the longitudinal axis of the guide surface relative to crankshaft Line prejudicially constructs.The guide surface can be the circumferential surface of control element.The control element can be for example cam-like or It is eccentric disk, and allows operating element to move when aspiration stroke starts towards the direction of crankshaft, such as by lesser Radius.The movement can for example be caused by spring.Here, the contact area section is also made to press institute towards Crankshaft motion and from outside State valve closing element.Later, the operating element returns to the position far from crankshaft by the contact with control element, in the position The place's of setting contact area section does not apply pressure on valve closing element.The straight section of the operating element can draw in cylinder housing It leads.The straight section of the operating element can especially be directed across valve plate, so that curved section is completely in the appearance of cylinder head cover In product and contact area section is also in the volume of cylinder head cover.Therefore, the break-through for operating element is not needed in cylinder head cover Portion.

The specific invention also includes the method for running coolant compressor, which includes electric drive Unit；Cylinder housing；The crankshaft that can be driven by the electric drive unit；And piston, the piston can be driven simultaneously by the crankshaft And guided in the swept volume of the cylinder housing, for periodically compressing refrigerant, which can pass through suction valve It is transported in the swept volume, which includes suction opening and by stroke close the valve closing member of the suction opening Part, preferably valve spring.Here, setting manipulation device, by stroke is opened described by the manipulation device at least supportively Valve closing element (i.e. every turn of the crankshaft opening valve closing element is primary).

Here, the manipulation device especially has contact area section, the contact area section is in the valve closing element and connects In conjunction or engagement can be formed, wherein the valve closing element by stroke is opened by the movement of the contact area section.

Other implementation modifications of the method are obtained by the above-mentioned principle of work and power of coolant compressor according to the present invention.

Detailed description of the invention

The present invention is explained in detail by embodiment now.Although attached drawing is exemplary and should illustrate structure of the present invention Think, but should not state with restrictively or even terminating anyway.In attached drawing:

Fig. 1 shows the top view of the first modification of coolant compressor according to the present invention；

Fig. 2 shows the perspective views according to the main component of the coolant compressor of Fig. 1；

Fig. 3 shows another perspective view according to fig. 2；

Fig. 4 shows the perspective view of the coolant compressor of Fig. 1；

Fig. 5 shows the setting sectional view about Fig. 4 of the coolant compressor of Fig. 1；

Fig. 6 shows the detail view of the operating element of Fig. 1-5；

Fig. 7 shows the schematic diagram of crankshaft, manipulation device and suction valve in selected crank angle；.

Fig. 8 shows the top view of the second modification of coolant compressor according to the present invention；

Fig. 9 shows the setting sectional view about Figure 12 of the coolant compressor of Fig. 8；

Figure 10 shows the top view of the partial sectional of Fig. 1；

Figure 11 shows the perspective view of the coolant compressor according to Fig. 8, the cutting as in Figure 10；

Figure 12 shows the perspective view of the coolant compressor according to Fig. 8.

Specific embodiment

Fig. 1 shows the top view of coolant compressor according to the present invention, wherein the constituent of the coolant compressor It is arranged in the compression case body that can closely encapsulate, the compressor housing is not shown here, can show which the compression The inside of casing body.

The coolant compressor includes electric drive unit, the electric drive unit include stator and with crankshaft 3 (see Fig. 2 and 3) rotor connected to anti-torsion.Crankshaft 3 can be driven by electric drive unit, thus vertical relative to crankshaft 3 with crankshaft 3 The piston-cylinder units that the crank-pin 12 of 4 eccentric setting of axis is in effect connection periodically aspirate or compress refrigerant.Institute Stating piston-cylinder units includes: the piston 2 for surrounding the cylinder housing 1 of cylinder and linearly guiding in cylinder (see Fig. 7).Piston 2 passes through company Bar 13 is connect with the crank-pin 12 of crankshaft 3, so that piston 2 carries out aspiration stroke and compression and discharge during crankshaft 3 rotates Stroke (see Fig. 7).

Equipped with the cylinder cover component 5 for being sealed shut cylinder on the front side of cylinder housing 1, cylinder cover component includes having suction opening 7 and pressure opening 9 valve plate 6.It is disposed with the suction valve 8 for by stroke closing suction opening 7 on valve plate 6 and by stroke closes The pressure valve 10 for closing pressure opening 9, as can be seen in Fig. 2 and 3.The cylinder head cover 11 of cavity is constructed (see figure together with valve plate 6 4) cylinder cover component 5 is closed.Cylinder head cover 11 (passes through four fixing elements, preferably spiral shell by multiple fixing elements in the present embodiment Nail) it is fixed in the front surface of cylinder housing 1, wherein valve plate 6 is clamped between cylinder head cover 11 and cylinder housing 1.In general, sealing member Part (preferred planar sealing element) is arranged between cylinder head cover 11 and valve plate 6 in other words between valve plate 6 and cylinder housing 1, to guarantee Leakproofness of the cylinder cover component 5 relative to compressor.The pressure piping being channeled out from pressure opening 9 is herein by cylinder shell Body 1 is constituted, wherein for pressure piping setting compression muffler 41.

According to the present invention, the manipulation device 14 mechanically coupled with crankshaft 3 is set for suction valve 8, it next can be in detail The manipulation device is described.The manipulation device 14 includes the operating element 15 for manipulating suction valve 8 and the company with 3 anti-torsion of crankshaft The operator region 17 of the control element 23 connect, the control element and operating element 15 is in effect connection.Operating element 15 includes Rod matrix 18 with the first lever arm 19 and the second lever arm 20, wherein operator region 17 constructs on the first lever arm 19.At this In embodiment, operator region 17 is arranged in the one end section of the first lever arm 19.

Operating element 15 is hingedly attached on cylinder head cover 11, can be realized the pendulum motion of operating element 15.Here, The swinging axle 21 of operating element 15 is parallel to 4 ground of the longitudinal axis orientation of crankshaft 3, to be put by operating element 15 around swinging axle 21 Open movement that is dynamic and realizing suction valve 8.Swinging axle 21 is constructed by supporting part 30, which turns as rod matrix 18 Dynamic point works.Supporting part 30 is constructed by the bracket 29 being fixed on cylinder head cover 11 in the present embodiment, wherein bracket 29 passes through Fixing element (passing through two fixing elements in this case) is attached on cylinder head cover 11, in this regard, seeing in the bracket 29 in Fig. 2 Two permanent openings.Bracket 29 is laterally arranged relative to cylinder housing 1 or relative to cylinder head cover 11, wherein upside is under Side is oriented respectively along or against longitudinal axis 4.Bracket 29 is configured to angle-shaped piece (Winkel), wherein pastes on the first side of bracket 29 Leaning against on the front side of cylinder head cover 11 and in order to fixed has at least one (preferably exactly two) permanent opening, and bracket 29 the second side is parallel to the laterally orientation of cylinder head cover 11 and has supporting part 30.Here, supporting part 30 is in the present embodiment In constructed by pin, the pin is directed across operating element 15 or rod matrix 18 the supporting opening.

In the implementation modification of substitution, supporting part 30 can also be constructed directly on cylinder housing 1 or in cylinder head cover 11 On.Here, supporting part 30 can for example be configured to the extension of the pin shape of cylinder head cover 11.

In coolant compressor according to prior art, suction valve 8 passively by during aspiration stroke in cylinder The low pressure of formation is manipulated.During the first opening stage of suction valve 8, when the opening force applied by the low pressure is substantially corresponding When the closing forces of suction valve 8, suction opening 7 of the refrigerant by part release is flowed into cylinder, thus the low pressure reduces And opening force reduces again.So-called " runout " of suction valve 8 occurs as a result, which is usually constructed by valve spring.? In the case where " runout ", suction valve 8 implements primary or multiple closing movement during aspiration stroke, until the low pressure is due to stream The refrigerant entered reduce ratio may be significantly smaller to apply low pressure necessary to opening force.Due to the effect, system is on the one hand reduced The efficiency of refrigerant compressor, because not having refrigerant or less refrigerant to reach in cylinder during aspiration stroke by the stage. Meanwhile the fluctuation in the refrigerant stream being sucked or in refrigerant circulation is occurred by " runout ", this causes to generate Undesirable noise.

Now, Fig. 2 and 3 shows the component part for meeting essence of the invention of coolant compressor.For the sake of clarity, especially It neither shows cylinder head cover 11 nor shows cylinder housing 1 or piston 2, so as not to cover other components.Such as it is initially mentioned As, manipulation device 14 is mechanically coupled with crankshaft 3, so that the contact area section 16 of operating element 15 can be according to crankshaft 3 Crank angle be brought to in the contact of suction valve 8, to realize the lasting open movement of the suction valve.Pass through contact area section 16 contact suction valve 8 at least during the open movement of suction valve 8 and are turned by the mechanical couplings according to the crankshaft of crankshaft 3 Angle and move, open suction valve 8 initiatively by operating element 15, wherein during opening stage suction valve 8 closing fortune It is dynamic to be prevented from due to being contacted with contact area section 16.

In the present embodiment, the second lever arm 20 of the rod matrix 18 of operating element 15 has contact area section 16, wherein connects Touching section 16 preferably orients in alignment with suction opening 7 and constructs or be fixed in the one end region of the second lever arm 20. Here, contact area section 16 is located in the region of cylinder cover component 5, i.e., in the opposite with cylinder housing 1 or piston 2 of valve plate 6 On that side, so that contact area section 16 can be with that side contacts opposite with cylinder housing 1 or piston 2 of suction valve 8.As a result, Suction valve 8 can be pushed by contact area section 16, and mode is that contact area section 16 is applied pressure by coupled movement Onto suction valve 8.

It is extend into due to contact area section 16 in the space of cylinder cover component 5, which is worn during aspiration stroke by refrigerant Stream, contact area section 16 have and the cross-sectional area of suction opening 7 comparatively speaking small cross-sectional area, wherein contact area section 16 Cross section only occupies about the 1% of the cross-sectional area of suction opening 7 in the present embodiment, to influence refrigerant as small as possible Flowing.

Now, the mechanical couplings of manipulation device 14 are realized as described below: that control element 23 is configured to dish type and have About the shape of the rotational symmetry of longitudinal axis 4, wherein the opening 28 that crank-pin 12 passes through control element 23 is stretched out.It controls as a result, Element 23 processed is arranged in 13 lower section of connecting rod.Construction is inclined relative to longitudinal axis 4 in the first end face 25 on the top of control element 23 The guide surface 24 of heart arrangement, the guide surface is in the present embodiment to be connect with the direct of the operator region 17 of operating element 15 In touching.Here, guide surface 24 is constructed by annular groove 27, the operator region 17 of such as pin shape construction of operating element 15 is protruded into Into the annular groove.Here, guide surface 24 is at least constructed by the two side walls of groove 27, thus operator region 17 passes through in institute Stating the guidance in groove can not only move out inwardly but also radially radially, this be respectively relative to longitudinal axis 4 and Speech.Accurate motion process is explained by Fig. 7.In principle, by control element 23 realize operating element 15 (more precisely Contact area section 16) it is taken around what the supporting part 30 of rod matrix 18 or the arranged off-centre by guide surface 24 of rotation determined Certainly in the pendulum motion of the crank angle of crankshaft 3.Therefore, contact area section 16 depends on crank angle by stroke the court of crankshaft 3 It is moved to suction valve 8 to guarantee the lasting open movement of suction valve 8, or leaves suction valve 8 by stroke so as not to hinder Hinder the closing movement of suction valve 8.

In the present embodiment, operating element 15 includes the contact element 31 of structural contact section 16, and the contact element is by bullet Spring wire rod is made, i.e., spring wire has the diameter less than 1 millimeter in this case, and the contact element is solid on rod matrix 18 Calmly, it is preferably clamped in the end regions of the second lever arm 20 by apparatus for fastening.Pass through the contact element being made of spring wire 31, the flexibility of contact element 31 can be for example adjusted, so as to accurately adjust the opening time point of suction valve 8.In this implementation In example, contact element 31 has curved jointing 32, which connect contact area section 16 with operating element 15.? This, 31 plane earth of contact element construction, i.e., in other words, all axis of bendings orient in parallel to each other.Jointing 32 exists There is the bending of V-arrangement, the bending of the V-arrangement is obliquely prolonged downwards on the direction of longitudinal axis 4 from operating element 15 in the present embodiment It stretches and is obliquely upwardly extended on the direction of longitudinal axis 4 again behind the tip for reaching V.It is connected the contact of jointing 32 Section 16 is arranged with linearly constructing and be arranged essentially parallel to the axially bored line extension of suction opening 7, wherein contact area section 16 is excellent It is selected in contact suction valve 8 in the upper half of suction opening 7.

Another perspective view of the coolant compressor is depicted in Fig. 4, wherein cylinder head cover 11 and at least partly cloth are shown Set the pumping muffler 33 in cylinder cover component 5.The coolant compressor of Fig. 4 is shown with sectional view, wherein 2 He of piston in Fig. 5 Connecting rod 13 is not drawn into.It has had ignored such as control element 23 of manipulation device 14 and bar 18 and has only been drawn into contact element Part 31.It is flowed in general, being flowed into the refrigerant in coolant compressor by refrigerant intake line by pumping muffler 33 Suction opening 7, wherein the outlet 34 of pumping muffler 33 is forced into valve plate 6 preferably through cylinder head cover 11 or spring assembly On, to establish approximate airtight connection between pumping muffler 33 and suction opening 7.In other words, suction valve 8 is sucked The outlet 34 of silencer 33 is completely covered.Therefore, it in order to take to contact area section 16 with the contact of suction valve 8, is taking out Suction muffler 33 constructs hole 35 in outlet 34, guides in the hole at least section of contact area section 16.Due to spring The minor diameter of wire rod and the small―gap suture width between hole wall and contact element 31, the loss when refrigerant flows into can be neglected Slightly.When suction opening 7 is also covered by a section of cylinder head cover 11 or by the other element of cylinder cover component 5, it is necessary to Also providing holes 35 in cylinder head cover 11 or in the other element, so as to activate suction valve 8.

The detail view of operating element 15 is shown in Fig. 6, is substantially made of rod matrix 18 and contact element 31.It is most upper Face is side view, and there, the swinging axle 21 of matrix 18 is drawn.

Below followed by top view, from top view it can be seen that each bending part 22a, 22b, 22c of matrix 18.Matrix 18 Bending part 22a, a 22b with each lever arm 19,20 and curved on swinging axle 21 between two lever arms 19,20 Folding part 22c.Three all bending part axis orient with being arranged essentially parallel to the longitudinal axis 4 (see Fig. 2) of crankshaft 3 respectively.Pass through The orientation of the bending part axis guarantees: matrix 18 has continuous basic side, and 18 plane earth of matrix constructs in the basic side, It is located in the plan herein.First lever arm 19 has about 140 ° of bending part 22a.Between two lever arms 19,20 Bending part 22c there is about 160 ° of angle, and the second lever arm 20 has about 90 ° of bending part.Therefore, the second lever arm 20 Cylinder head cover 11 can be surrounded in this wise, so that contact area section 16 is aligned with suction opening 7.

Lower left quarter shows the perspective view of operating element 15 seen from above in Fig. 6, and right lower quadrant show operating element 15 from The perspective view that lower section is seen.

Fig. 7 shows crankshaft, manipulation device and suction valve 8 in the case where 2 position of selected crank angle or piston Four schematic diagrames.On upper left side, piston 2 is in compression stroke end, soon reaches top dead centre.Contact area section 16 with Suction valve 8 contacts, but suction valve is still closed.Contact area section 16 can crank angle be 90 ° to 60 ° before top dead center It has been in suction valve 8 in contacting.

After reaching top dead centre, contact area section 16 just passes through and suction opening and opens suction valve 8, and mode is, it Suction valve is inwardly pushed from valve plate 6.This upper right quarter in Fig. 7 is shown.Contact area section 16 in which or crankshaft at time point Corner, which rises, opens suction valve 8, predetermined by the geometry of manipulation device 14 here.It is additional to contact area section 16, also by Low pressure in cylinder opens suction valve 8.

In the lower left quarter of Fig. 7, aspiration stroke will reach its lower dead center already close to its end, piston.Contact area section 16 Suction valve 8 is further opened.

The beginning of compression stroke is shown in right lower quadrant, i.e., piston is just after lower dead center.Contact area section 16 again from It opens suction opening 7 and thus no longer contacts suction valve 8.

Fig. 8 shows the top view of the second modification of coolant compressor according to the present invention.Here, coolant compressor Structure is substantially until manipulation device 14 is as the first modification in Fig. 1-7.Here, for the mechanical with crankshaft 3 of suction valve 8 The manipulation device 14 of coupling includes operating element 36 for manipulating suction valve 8 and the control connecting with 3 anti-torsion of crankshaft member Part 37.In order to preferably see operating element 36, cylinder head cover 11 is removed in the figure, therefore valve plate 6 is open outward.

Operating element 36 has the shape of the bent stick of circular cross section.Operating element 36 includes: (in this straight line) One section 38 can be parallel to piston 2 and translationally move；And curved second section 39, cooperate suction opening 7 from rear And contact area section 16 is carried, so that contact area section can also be parallel to piston 2 and translationally move.The curved section has herein The shape of semicircle.Straight contact area section 16 is shorter than straight section 38.Straight contact area section 16 is with being parallel to the direction of motion of piston 2 Orientation.Contact area section 16 also may be configured to individual component and/or the cross section small with the rest part than operating element 36. The contact element 31 that contact area section 16 can be similar to Fig. 1-7 is implemented as example elastic contact element like that.

If straight section 38 is moved away from crank-pin 12, contact area section 16 is removed from valve plate 6.In this case It is moved away from contact area section 16 from suction valve 8.If straight section 38 is moved towards crank-pin 12, thus contact area section 16 can be worn It crosses suction opening 7 and opens suction valve 8.

Operating element 36 is manipulated by control element 37, the disk with variable-diameter.Control element 37 can also be simultaneously Execute the function of flywheel.The end of straight section 38 is towards prominent from cylinder housing 1 on the direction of crankshaft 3 or crank-pin 12. The end of straight section 38 is pre-tightened on the direction towards crank-pin 12 by spring 40, so that it can be in control element 37 Along guidance on outer peripheral edge.Therefore, in the angular regions with minor diameter of control element 37, i.e. control element in fig. 8 About 180 ° of the lower part of 37 outer peripheral edges, thus straight section 38 is pulled to crank-pin 12 and contact area section 16 opens suction valve 8. There are larger-diameter angular regions, i.e. about 180 ° of the top of 37 outer peripheral edge of control element in fig. 8 in control element 37, The end of straight section 38 is pushed away from crank-pin 12, removes contact area section 16 (i.e. in fig. 8 downwards) from valve plate 6 And suction valve 8 can close.

It can be seen that the section of the coolant compressor in Fig. 8, piston 2 soon reaches its top dead centre, therefore compresses in Fig. 9 With discharge stroke adjacent end.Pressure valve 10 is also open.Since the sectional view cannot see contact area section 16 herein.Only It can be seen that the end of straight section 38, operator region 17 is constituted, which is in control element 37 acts on and contacting. But contact area section 16 can be with suction valve 8 in contacting, because aspiration stroke will start.The straight area of operating element 36 Section 38 is directed across cylinder housing 1, wherein cylinder housing 1 is used as the guide device of the straight section 38.Here, cylinder housing 1 is used for The hole of the straight section 38 is located at the lower section side of the cylinder holes for piston.It is stretched out because straight section 38 also passes through valve plate 6, institute Can be achieved: curved section 39 is placed in the inside of cylinder head cover 11.Here, cylinder head cover 11 is not drawn, but can be as in Fig. 4 With 5 in implement like that.Different from Figure 4 and 5 like that, the cylinder head cover 11 in Fig. 8-12 need not have for operating element 15 or The hole of person's contact element 16 passed through, because operating element 36 enters in cylinder cover component in the inside of cylinder head cover 11.

In Figure 10, more with the being parallel to plan cutting of left one side of something of the coolant compressor.According to line The sectional view of A-A is three-dimensionally shown in Figure 11.Figure 12 shows the perspective view for the coolant compressor not being cut.Here, It can also see herein, section 38 straight in the present embodiment is more lower than the position of contact area section 16.Here, guide surface 24 Also it is seen as the circumferential surface of control element 37.

Reference signs list

1 cylinder housing

2 pistons

3 crankshafts

The longitudinal axis of 4 crankshafts 3

5 cylinder cover components

6 valve plates

7 suction openings

8 suction valves

9 pressure opening

10 pressure valve

11 cylinder head covers

12 crank-pins

13 connecting rods

14 manipulation devices

15 operating elements

The contact area section of 16 operating elements 15

The operator region of 17 operating elements 15

18 rod matrixes

First lever arm of 19 matrixes 18

Second lever arm of 20 matrixes 18

The swinging axle of 21 operating elements 15

22 bending parts

The first bending part of 22a

The second bending part of 22b

22c third bending part

23 control elements

The guide surface of 24 control elements 23

The first end face of 25 control elements 23

The second end face of 26 control elements 23

27 grooves

28 openings

29 brackets

30 supporting parts

31 contact elements

The jointing of 32 contact elements 31

33 pumping mufflers

The outlet of 34 pumping mufflers 33

35 holes

36 operating elements

37 control elements

The straight section of 38 operating elements 36

The curved section of 39 operating elements 36

40 springs

41 pressure mufflers

Claims

1. coolant compressor includes electric drive unit；Cylinder housing (1)；The crankshaft that can be driven by the electric drive unit (3)；And piston (2), the piston can be driven by the crankshaft (3) and be drawn in the swept volume of the cylinder housing (1) It leads, for periodically compressing refrigerant, which can be transported in the swept volume by suction valve, the suction valve The valve closing element (8) of the suction opening (7) including suction opening (7) and by stroke is closed, the valve closing element is preferred It is valve spring, which is characterized in that be equipped with manipulation device (14), the manipulation device is configured to by stroke open the valve pass Close element (8).

2. coolant compressor according to claim 1, which is characterized in that the valve closing element (8) is only supportively It can be opened by the manipulation device (14).

3. coolant compressor according to claim 1 or 2, which is characterized in that the manipulation device (14) has contact Section (16), the contact area section are in the valve closing element (8) and engage or can be formed engagement, the manipulation device (14) it is configured to by stroke open the valve closing element (8) by the movement of the contact area section (16).

4. coolant compressor according to claim 3, which is characterized in that the contact area section (16) and the valve are closed That side away from the piston (2) of element (8) is in contact or can form contact, opens institute will pass through application pressure State valve closing element.

5. according to claim 1 to coolant compressor described in one of 4, which is characterized in that in the valve closing element (8) In the case that refrigerant pressure on two sides is in equilibrium state, it can introduce and open the valve pass by the manipulation device (14) Close element (8).

6. coolant compressor according to one of claims 1 to 5, which is characterized in that by the manipulation device (14) It can by stroke close the valve closing element (8).

7. coolant compressor according to one of claims 1 to 6, which is characterized in that manipulation device (14) construction For by stroke opening the valve closing element (8) according to the crank angle of the crankshaft (3).

8. according to claim 1 to coolant compressor described in one of 7, which is characterized in that the manipulation device (14) and institute It states crankshaft (3) mechanically to couple and include operating element (15,36) in the outside of the swept volume, the operating element tool Have to be formed with the valve closing element (8) and contacts or be in the contact area section (16) contacted with the valve closing element.

9. coolant compressor according to claim 8, which is characterized in that the operating element (15) is hingedly attached at On the cylinder housing (1) or on the cylinder head cover (11) of cylinder cover component (5).

10. the coolant compressor according to one of claim 8 or 9, which is characterized in that the operating element (15) is with energy The mode swung around swinging axle (21) is supported, and the swinging axle is parallel to longitudinal axis (4) orientation of the crankshaft (3).

11. the coolant compressor according to one of claim 8 to 10, which is characterized in that manipulation device (14) tool Have and is in the control element (23,37) that effect contacts, the control element with the operator region (17) of the operating element (15,36) (23,37) are attached to anti-torsion on the crankshaft (3),

Wherein, operating element (15,36) and control element (23,37) are constructed so that the rotation of the crankshaft (3) can be transported Turn becomes the pendulum motion or translational motion of at least contact area section (16) of the operating element (15,36).

12. coolant compressor according to claim 11, which is characterized in that the control element (23,27) have with The operator region (17) of the operating element (15,36) is in the guide surface (24) in contact, wherein the guide surface (24) is opposite Longitudinal axis (4) in the crankshaft (3) prejudicially constructs.

13. coolant compressor according to claim 12, which is characterized in that the guide surface (4) is described by being arranged in The towards the driving unit (25) or on the end face (26) of the driving unit, annular of control element (23) extends Groove (27) construction.

14. coolant compressor described in one of 2 to 13 according to claim 1, which is characterized in that operating element (15) tool There are rod matrix (18), wherein the first lever arm (19) of the matrix (18) has the operator region (17) and the matrix (18) the second lever arm (20) has the contact area section (16).

15. the coolant compressor according to one of claim 9 to 14, which is characterized in that the cylinder of the cylinder cover component (5) Housing (11) forms the supporting part (30) for being used for the operating element (15), alternatively, bracket (29) is fixed on the cylinder cover component (5) on cylinder head cover (11), which forms the supporting part (30) for being used for the operating element (15).

16. coolant compressor described in one of 4 or 15 according to claim 1, which is characterized in that the operating element (15) Matrix (18) has at least one bending part (22,22a, 22b, 22c), and preferably each lever arm (19,20) has at least one Bending part (22), wherein bending part axis (37) orients with being arranged essentially parallel to the longitudinal axis (4) of the crankshaft (3) respectively.

17. the coolant compressor according to one of claim 3 to 16, which is characterized in that the operating element (15,36) Contact area section (16) cross-sectional area it is smaller than the cross-sectional area of the suction opening (7).

18. the coolant compressor according to one of claim 3 to 17, which is characterized in that the contact area section (16) is logical Contact element (31) construction of elasticity is crossed, the contact element of the elasticity especially by spring wire or is made of plastics.

19. coolant compressor described in one of 8 and claim 8 to 17 according to claim 1, which is characterized in that described to connect It touches element (31) plane earth to construct and there are curved jointing (32), wherein the jointing (32) is when necessary by institute The matrix (18) for stating the preferred rod of operating element (15) is connect with the contact area section (16).

20. coolant compressor according to claim 19, which is characterized in that the contact area section (16) is substantially parallel Extend ground arrangement in the axially bored line of the suction opening (7), and the jointing (32) has the bending of at least one V-arrangement Portion, wherein oriented with being preferably parallel to the longitudinal axis (4) of the crankshaft (3) by the plane that the contact element (31) construct.

21. the coolant compressor according to one of claim 3 to 20, which is characterized in that the contact area section (16) is extremely Guided in the hole (35) of the cylinder head cover (11) of the cylinder cover component (5) and/or in the pumping muffler (33) to few section Hole (35) in, preferably guided in the hole of the outlet (34) of the pumping muffler (33).

22. the coolant compressor according to one of claim 8,11,12,17 to 20, which is characterized in that the operon element Part (15) includes: the first section, and the especially straight section of first section, first section can be parallel to the piston (2) it translationally moves；And curved second section, second section cooperate the suction opening (7) from rear and hold The contact area section (16) are carried, so that the contact area section can also be parallel to the piston (2) and translationally move.

23. the method for running coolant compressor, the coolant compressor include electric drive unit；Cylinder housing (1)；Energy The crankshaft (3) driven by the electric drive unit；And piston (2), the piston can be driven and in institute by the crankshaft (3) It states and is guided in the swept volume of cylinder housing (1), for periodically compressing refrigerant, which can be conveyed by suction valve Into the swept volume, which includes suction opening (7) and by stroke closes the valve closing member of the suction opening (7) Part (8), the valve closing element are preferably valve spring, which is characterized in that setting manipulation device (14), by the manipulation device The valve closing element (8) by stroke is opened at least supportively.

24. according to the method for claim 23, which is characterized in that the manipulation device (14) has contact area section (16), The contact area section is in the valve closing element (8) and engages or can be formed engagement, wherein passes through the contact area section (16) the valve closing element (8) by stroke is opened in movement.