KR20150031144A - Suction Valve - Google Patents

Suction Valve Download PDF

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Publication number
KR20150031144A
KR20150031144A KR20130110729A KR20130110729A KR20150031144A KR 20150031144 A KR20150031144 A KR 20150031144A KR 20130110729 A KR20130110729 A KR 20130110729A KR 20130110729 A KR20130110729 A KR 20130110729A KR 20150031144 A KR20150031144 A KR 20150031144A
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KR
South Korea
Prior art keywords
suction valve
present
suction
pulsation
pressure
Prior art date
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KR20130110729A
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Korean (ko)
Inventor
박장식
강희종
남택현
김진상
김종호
Original Assignee
동일기계공업 주식회사
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Priority to KR20130110729A priority Critical patent/KR20150031144A/en
Publication of KR20150031144A publication Critical patent/KR20150031144A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1009—Distribution members
    • F04B27/1018—Cylindrical distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1822—Valve-controlled fluid connection
    • F04B2027/1831—Valve-controlled fluid connection between crankcase and suction chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/184—Valve controlling parameter
    • F04B2027/1845—Crankcase pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/184—Valve controlling parameter
    • F04B2027/1859—Suction pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The present invention relates to a suction valve which reduces pulsation using a gap between pressure of a crank chamber and pressure of a suction chamber. According to an embodiment of the present invention, the suction valve generates pulsation phenomenon where the amount of introduced coolant is changed by an iterative operation of a stroke when a plurality of pistons is pumping in a process of compressing the coolant by a compressor, and springs having weak elasticity cannot help control the pulsation. Therefore, the suction valve generates growling noise.

Description

석션 밸브{Suction Valve}Suction Valve

본 발명은 차량용 가변용량 압축기에 사용되는 석션 밸브에 관한 것이다.The present invention relates to a suction valve used in a variable capacity compressor for a vehicle.

일반적으로, 차량 에어컨용 압축기는 동력원으로부터 동력을 클러치의 단속작용에 의해 선택 전달받고, 증발기로부터 냉매가스를 내부에 흡입하여 피스톤의 직선 왕복운동에 의하여 압축하여 응축기쪽으로 보내주는 장치이다. 이러한 압축기는 최근에 사판(斜板)의 경사각을 제어하여 토출용량을 가변시키는 가변용량 압축기 타입으로 널리 적용되어 있다.2. Description of the Related Art Generally, a compressor for a vehicle air conditioner is a device that selectively receives power from a power source by an intermittent action of a clutch, sucks refrigerant gas from the evaporator, compresses the refrigerant gas by linear reciprocating motion of the piston, Such a compressor is widely applied as a variable displacement compressor type in which a discharge capacity is varied by controlling the inclination angle of a swash plate.

이러한 가변용량 압축기는, 기동 시 또는 가변용량 운전 시와 같은 경우에 있어서, 흡입에 의한 맥동(surging)이 발생하고 맥동에 기인한 진동에 의해 가변용량 압축기의 진동이나 이음(異音)이 발생하기 쉬운 문제가 있다. 이러한 문제를 해결하기 위하여, 종래부터 흡입실로 냉매가 들어오는 통로인 흡입 포트에 석션 밸브를 적용하여, 냉매가 흐를 수 있는 면적을 제어하는 방식으로 흡입 맥동을 저감시키는 방법을 사용하고 있다. In such a variable capacity compressor, surge due to suction occurs when the compressor is started or during variable capacity operation, and vibration or noise (abnormal sound) of the variable capacity compressor is generated due to vibration caused by pulsation There is an easy problem. In order to solve such a problem, a suction valve is applied to a suction port, which is a passage through which refrigerant enters the suction chamber, and a suction pulsation is reduced by a method of controlling the area through which the refrigerant can flow.

그러나, 종래의 석션 밸브에 의해서는 흡입에 의해서 발생되는 맥동을 충분히 저감시키지 못하는 문제점이 있다.However, there is a problem in that pulsation caused by suction can not be sufficiently reduced by a conventional suction valve.

본 발명은 상기한 종래기술의 문제점들을 해결하기 위해 안출된 것으로서, 흡입에 의한 맥동을 줄이는 것을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to reduce pulsation by suction.

상기 목적을 달성하기 위한 본 발명에 따른 석션 밸브는, 크랭크실의 압력과 흡입실의 압력 간의 차이를 이용하여 맥동을 줄일 수 있는 석션 밸브이다.In order to achieve the above object, a suction valve according to the present invention is a suction valve capable of reducing pulsation using a difference between a pressure in a crank chamber and a pressure in a suction chamber.

상술한 바와 같은 본 발명에 따른 석션 밸브는 흡입에 의한 맥동을 줄일 수 있는 효과를 얻을 수 있다.The suction valve according to the present invention as described above can reduce the pulsation due to suction.

도 1은 본 발명의 석션 밸브(VSD)의 제1 동작을 나타내는 도면이다.
도 2는 본 발명의 석션 밸브(VSD)의 제2 동작을 나타내는 도면이다.
도 3는 본 발명의 석션 밸브(VSD)의 제3 동작을 나타내는 도면이다.
도 4는 본 발명의 석션 밸브(VSD)의 제4 동작을 나타내는 도면이다.1 is a view showing a first operation of a suction valve (VSD) of the present invention.
2 is a view showing a second operation of the suction valve (VSD) of the present invention.
3 is a view showing a third operation of the suction valve (VSD) of the present invention.
4 is a view showing a fourth operation of the suction valve (VSD) of the present invention.

후술하는 본 발명에 대한 상세한 설명은, 본 발명이 실시될 수 있는 특정 실시예를 예시로서 도시하는 첨부 도면을 참조한다. 이들 실시예는 당업자가 본 발명을 실시할 수 있기에 충분하도록 상세히 설명된다. 본 발명의 다양한 실시예는 서로 다르지만 상호 배타적일 필요는 없음이 이해되어야 한다. 예를 들어, 여기에 기재되어 있는 특정 형상, 구조 및 특성은 일 실시예에 관련하여 본 발명의 정신 및 범위를 벗어나지 않으면서 다른 실시예로 구현될 수 있다. 또한, 각각의 개시된 실시예 내의 개별 구성요소의 위치 또는 배치는 본 발명의 정신 및 범위를 벗어나지 않으면서 변경될 수 있음이 이해되어야 한다. 따라서, 후술하는 상세한 설명은 한정적인 의미로서 취하려는 것이 아니며, 본 발명의 범위는, 적절하게 설명된다면, 그 청구항들이 주장하는 것과 균등한 모든 범위와 더불어 첨부된 청구항에 의해서만 한정된다. 도면에서 유사한 참조부호는 여러 측면에 걸쳐서 동일하거나 유사한 기능을 지칭하며, 길이 및 면적, 두께 등과 그 형태는 편의를 위하여 과장되어 표현될 수도 있다.The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views, and length and area, thickness, and the like may be exaggerated for convenience.

압축기의 냉매압축 과정에서 다수 피스톤의 펌핑시 행정의 반복되는 동작으로 인한 냉매의 유입량이 변화하는 맥동현상이 발생되며, 이에 따른 그라울링 소음으로 나타난다.During the compression of the refrigerant in the compressor, pulsation phenomenon occurs in which the inflow amount of the refrigerant changes due to the repeated operation of the stroke during the pumping of the large number of pistons, resulting in grazing noise.

그런데, 석션밸브의 스프링 상수는 10gf이하의 낮은 설계가 요구된다. 압축기의 원활한 압축을 위해서는 냉매 흡입량이 충분해야 하는데 석션밸브의 스프링 상수 또는 하중이 높을경우 Core의 열림량이 감소하며 냉매유입량 역시 줄어들게 되어 압축기 성능이 떨어진다. 따라서, 탄성력이 약한 스프링은 맥동을 제어하는데 도움을 줄 수 없게 되어 그라울링 소음으로 나타난다.However, the spring constant of the suction valve is required to be as low as 10 gf or less. If the spring constant or the load of the suction valve is high, the opening amount of the core is reduced and the refrigerant inflow amount is also decreased, and the performance of the compressor is deteriorated. Therefore, a spring with a weaker elasticity can not help control the pulsation, and thus appears as grayling noise.

이하, 첨부된 도면을 참조하여 본 발명의 구성을 상세하게 설명하도록 한다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 석션 밸브(VSD)의 제1 동작을 나타내는 도면이다.1 is a view showing a first operation of a suction valve (VSD) of the present invention.

도 2는 본 발명의 석션 밸브(VSD)의 제2 동작을 나타내는 도면이다.2 is a view showing a second operation of the suction valve (VSD) of the present invention.

도 3는 본 발명의 석션 밸브(VSD)의 제3 동작을 나타내는 도면이다.3 is a view showing a third operation of the suction valve (VSD) of the present invention.

도 4는 본 발명의 석션 밸브(VSD)의 제4 동작을 나타내는 도면이다.4 is a view showing a fourth operation of the suction valve (VSD) of the present invention.

본 발명의 일 실시예에 의하면, 타 압력(크랭크실 압력)을 석션밸브 흡입압력에 상응하게 구성하여 가변을 일으켜 맥동을 저감시킨다. 운전상태에 따라 크랭크실 압력이 on/off되는 방식이다.According to the embodiment of the present invention, the other pressure (crank chamber pressure) is configured to correspond to the suction valve suction pressure to cause the variable pressure to reduce pulsation. The crank chamber pressure is turned on / off according to the operating condition.

V-Case는 크랭크실 압력(Pc)과 흡입실 압력(Ps)을 상응토록 하여 가변을 일으킨다. The V-Case causes the crank chamber pressure (Pc) and the suction chamber pressure (Ps) to change correspondingly.

과다한 크랭크실 압력은 필요 이상의 Core 작동을 억제하여 압축기의 성능이 떨어지게 한다. 따라서, 크랭크실의 압력에 따라 V-Case의 이동거리가 변동하여 bypass가 열릴 수 있도록 한다. Bypass에 의하여 과다한 크랭크실 압력의 적정량을 밴트하여 해소시켜 줌으로써 Core의 작동을 원활토록 한다.Excessive crankcase pressure reduces core performance by reducing the performance of the compressor. Therefore, the movement distance of the V-case varies according to the pressure of the crank chamber so that the bypass can be opened. Bypass is used to smooth out the excessive amount of crankcase pressure by bending the core.

V-case와 Core를 통해 흡입실 압력과 크랭크실 압력에 따라 냉매가 배출되는 면적이 가변될 수 있다.The area through which the refrigerant is discharged can be varied depending on the suction chamber pressure and the crank chamber pressure through the V-case and the core.

Claims (1)

크랭크실의 압력과 흡입실의 압력 간의 차이를 이용하여 맥동을 줄일 수 있는 석션 밸브. A suction valve that can reduce pulsation by using the difference between the pressure in the crank chamber and the pressure in the suction chamber.
KR20130110729A 2013-09-13 2013-09-13 Suction Valve KR20150031144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130110729A KR20150031144A (en) 2013-09-13 2013-09-13 Suction Valve

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Application Number Priority Date Filing Date Title
KR20130110729A KR20150031144A (en) 2013-09-13 2013-09-13 Suction Valve

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KR20130110729A KR20150031144A (en) 2013-09-13 2013-09-13 Suction Valve

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