EP2499366A1 - Compresseur de climatisation pour un véhicule et véhicule - Google Patents

Compresseur de climatisation pour un véhicule et véhicule

Info

Publication number
EP2499366A1
EP2499366A1 EP10760653A EP10760653A EP2499366A1 EP 2499366 A1 EP2499366 A1 EP 2499366A1 EP 10760653 A EP10760653 A EP 10760653A EP 10760653 A EP10760653 A EP 10760653A EP 2499366 A1 EP2499366 A1 EP 2499366A1
Authority
EP
European Patent Office
Prior art keywords
piston
compression chamber
air conditioning
vehicle
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10760653A
Other languages
German (de)
English (en)
Inventor
Bjoern Noack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2499366A1 publication Critical patent/EP2499366A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B49/002—Hydraulic systems to change the pump delivery

Definitions

  • Air conditioning compressor for a vehicle Vehicle
  • the invention relates to an air conditioning compressor for a vehicle, in particular motor vehicle, having a compression chamber which has an inlet for a cooling medium to be compressed and a drain for the compressed cooling medium, wherein a wall of the compression chamber is at least partially formed by a translationally displaceable piston.
  • the invention relates to a vehicle, in particular a motor vehicle, with a drive device and an air conditioning compressor having an air conditioning compressor.
  • Air compressors and vehicles of the type discussed here are known from the prior art.
  • air conditioning devices which provide for a cooling of the interior.
  • such air conditioning devices have at least one air conditioning compressor, which ensures the air conditioning enabling compression of a gas and / or vapor refrigerant in a cycle of the air conditioning device.
  • air compressors are known, which are based on the principle of a piston pump and to have a translationally displaceable piston, which is used for compressing a gas and / or vaporous cooling medium located in a compression chamber.
  • the piston forms at least one wall region of the compression chamber, so that the volume of the compression chamber is reduced by displacing the piston and the cooling medium located therein is compressed.
  • Known air conditioning compressors are designed such that they are mechanically driven by a belt or chain drive of a crankshaft of an internal combustion engine. As a result, the drive device of such a vehicle, however, energy is taken, which lacks the vehicle to feed and beyond also in the pollutant emissions (C0 2 emissions) noticeable.
  • the air conditioning compressor according to the invention is driven to reduce without the performance of a drive device and requires, compared to known air conditioning compressors, a relatively small space.
  • This air compressor is characterized by the features of the current claim 1. Accordingly, the air conditioning compressor is designed such that the piston at its end remote from the compression chamber forms at least one wall region of a control pressure chamber of the air conditioning compressor.
  • an air-conditioning compressor is provided which has an axially displaceable piston which cooperates with the compression chamber on one side or with one end and with the control pressure chamber on the other side or with the other end. Due to the pressure difference between the control pressure chamber and the compression chamber, the piston is displaced axially.
  • the pressure in the control pressure chamber can be controlled, as the name implies, so that a compression process in the compression chamber is adjustable by increasing and decreasing the pressure in the control pressure chamber.
  • the piston By increasing the pressure in the control chamber, the piston is moved into the compression chamber or the volume of the compression chamber is reduced.
  • By reducing the pressure in the control pressure chamber the piston is moved out of the compression chamber, so that in the compression chamber cooling medium nachströmt and optionally sucked.
  • the air conditioning compressor according to the invention is not operated mechanically, but preferably hydraulically. In this case, a connection of the air conditioning compressor to an existing hydraulic system can take place.
  • the advantageous air conditioning compressor thus does not remove any energy required for driving / feeding a drive device of a motor vehicle.
  • the inlet and / or the outlet of the compression chamber are arranged or formed on a piston region remote from the end of the compression chamber. This ensures that the largest possible volume of the compression chamber for conveying and compressing cooling medium is available.
  • the inlet and / or the drain are formed as a bore / s in a housing forming the compression chamber.
  • a check valve is assigned to the inlet and / or the drain.
  • the check valves are designed and / or arranged such that at elevated pressure in the compression chamber closes the inlet associated check valve and the flow associated check valve opens so that the compressed in the compression chamber cooling medium is expelled under high pressure from the compression chamber when the piston moves into the compression chamber. If the piston moves in the opposite direction due to a lower pressure in the control pressure chamber, then the non-return valve assigned to the outlet closes the previously released flow cross-section and the check valve assigned to the inlet releases a flow cross-section so that gas and / or vaporous cooling medium flow into the compression chamber can.
  • the check valves thus ensure a pressure build-up in the compression chamber and a separation between a high-pressure section and a low-pressure section of the cooling medium leading cooling circuit.
  • the piston is associated with at least one return spring.
  • the rear part is to be understood as the displacement of the piston out of the compression chamber.
  • the return spring serves to increase the volume of the compression chamber by moving the piston.
  • the return spring permanently ensures safe operation of the air conditioning compressor by applying a spring force to the piston in the direction of the control pressure chamber.
  • the return spring is designed as a helical spring and arranged in the compression chamber. The return spring thus acts as a compression spring and is optionally biased between the facing to the compression chamber end face of the piston and a said end face of the piston opposite housing wall of the compression chamber.
  • control pressure chamber in a hydraulic circuit in particular a drive device of a motor vehicle is einbindbar.
  • control pressure chamber corresponding connections, which allow easy integration into such a hydraulic circuit.
  • material and material thickness of the control pressure chamber forming housing are selected according to the high pressure requirements. Among other things, this leads to the fact that the control pressure chamber is designed as a hydraulic chamber and the air compressor as a hydraulically controlled air conditioning compressor.
  • control pressure chamber preferably has a high-pressure connection and a low-pressure connection for the hydraulic circuit. Due to the high-pressure connection, hydraulic fluid is fed into the control pressure chamber so that the piston is displaced into the compression chamber.
  • a pressure must expediently be present at the high-pressure connection, which is sufficient to displace the piston for compressing the gaseous and / or vaporous cooling medium located in the compression chamber.
  • the low-pressure and / or high-pressure port is assigned in each case a switchable valve.
  • the switchable valve associated with the high pressure port hydraulic fluid flows under high pressure into the control pressure chamber.
  • the low pressure valve is suitably closed. Due to the high pressure of the hydraulic fluid, the piston is displaced into the compression chamber and the cooling medium located there is compressed.
  • the vehicle according to the invention is characterized by an air conditioning compressor, as described above.
  • the air compressor is incorporated in a hydraulic circuit of the drive device, wherein advantageously the low pressure port is connected to a low pressure section of the hydraulic circuit and the high pressure port to a high pressure section of the hydraulic circuit.
  • the cooling capacity of the air conditioning device can now be controlled or regulated in a simple manner. Since a mechanical drive of the air conditioning compressor is omitted, the drive device is not taken for the energy required for the feed, so on the one hand, the performance of the drive device can be fully used for propulsion and on the other pollutant emissions are reduced.
  • Figure 1 shows an air compressor in a simplified sectional view
  • FIG. 2 shows a vehicle with an air conditioning device.
  • FIG. 1 shows, in a simplified representation, a longitudinal section through an air-conditioning compressor 1, for an air-conditioning device, in particular of a vehicle or motor vehicle.
  • the air conditioning compressor 1 has a housing 2, which is preferably at least substantially Vietnamesezylinderför- mig.
  • a piston 3 is arranged axially displaceable - that is, in the direction of its longitudinal axis.
  • two sealing elements 4 in the form of O-rings 5 are arranged on the piston 3, sealing the gap between the piston 3 and the inside of the housing 2 in a sealing manner.
  • the sealing elements 4 can also serve to guide the piston 3 in the housing 2.
  • the guide further, not shown here, for example, in Form of guide webs and / or grooves provided which serve in particular to minimize friction when moving the piston 3 in the housing 2 and prevent jamming tilting of the piston 3 in the housing 2.
  • the housing 2 of the air conditioning compressor 1 further comprises in a first region 6 an inlet 7 and a drain 8, which are each formed in the jacket wall of the housing 2.
  • the inlet 7 and the outlet 8 are aligned substantially radially with respect to the housing 2.
  • the inlet 7 has a first check valve 9 and the outlet 8 a second check valve 10.
  • the design and function of check valves is well known, so that it should not be discussed in detail here on the exact design of the check valves 9 and 10.
  • the housing 2 of the air conditioning compressor 1 has a high-pressure connection 12 and a low-pressure connection 13, which in the present case are likewise formed in the jacket wall of the housing 2.
  • the high-pressure port 12 and the low-pressure port 13 are each assigned a switchable valve 14 and 15, respectively.
  • the air conditioning compressor 1 can be integrated in the hydraulic circuit of a drive device of the above-mentioned motor vehicle.
  • the switchable valves 14 and 15 can be closed or release at the respective port 12,13 a corresponding flow cross-section.
  • the flow cross sections are infinitely adjustable.
  • the check valves 9, 10 and / or the valves 14, 15 may each be formed at least in regions integrally with the housing 2 or as separate attachments.
  • the chamber on the inlet 7 and the outlet 8 having side of the housing 2 forms a compression chamber 18 for a cooling medium of the air conditioning device of the motor vehicle having the air conditioning compressor 1.
  • the chamber 17 located on the opposite side of the piston 3 forms together with the piston Control pressure chamber 19 which controls the movement of the piston 3 by switching the valves 14 and 15 substantially.
  • a return spring 20, which is presently designed as a helical spring 21, is advantageously arranged.
  • the return spring 20 acts together with the free end face of the piston 3 and the opposite end of the piston, closed end side of the housing 2 in the end region 6.
  • the return spring 20 is arranged under bias between the piston 3 and the housing 2, so that it always acts on the piston 3 in the direction of the control pressure chamber 19 with a spring force. So that the piston 3 is not completely introduced into the control pressure chamber 19, stops are expediently provided on the housing inner wall in this case, which prevent over-penetration of the piston 3 into the control pressure chamber 19.
  • the control pressure chamber 19 and the compression chamber 18 are thus each formed by the walls of the housing 2 and by a respective free end face of the piston 3.
  • the inlet 7 is fed to a gas and / or vaporous cooling medium of the cooling circuit of the air conditioning unit to be compressed.
  • the check valves 9 and 10 ensure that the cooling medium to be compressed, although in the compression chamber 18, but not out of it can flow out again, provided that the pressure in the compression chamber does not exceed a critical pressure.
  • the valve 14 is opened, so that hydraulic fluid from the hydraulic circuit of the drive device flows into the control pressure chamber 19, while the valve 15 is closed.
  • pressure builds up in the control pressure chamber 19, which ensures that the piston 3 moves in the direction of the compression chamber 16 or in the direction of the end region 6, as indicated by an arrow 22.
  • the return spring 20 is thereby tensioned and compressed in the compression chamber 16 located gas and / or vapor cooling medium, wherein the pressure in the compression chamber 18 is increased.
  • the return spring 20 and the now existing pressure difference between the control pressure chamber 19 and the compression chamber 18 ensure that the piston 3 is moved back, as indicated by an arrow 23, to its original position.
  • the remaining in the compression chamber 18 refrigerant evaporates again, and by the resulting suction is additionally sucked via the check valve 9 gaseous and / or vaporous cooling medium in the compression chamber 18, while the check valve 10 is closed again.
  • the check valve 9 gaseous and / or vaporous cooling medium in the compression chamber 18, while the check valve 10 is closed again.
  • the speed of the piston 3 and the path of movement of the piston 3 can be influenced.
  • FIG. 2 shows a simplified representation of an advantageous embodiment of a vehicle 24, which is designed as a motor vehicle 25 and to a drive device 26 includes, which includes an internal combustion engine and / or one or more electrical machines.
  • the drive device 26 is associated with a hydraulic unit 27, which has, inter alia, means for generating a pressure for a liquid hydraulic medium.
  • the hydraulic unit is connected via a first hydraulic circuit 28 with components of the drive device 26 and via a second hydraulic circuit 29 with the above-described air conditioning compressor 1.
  • a high pressure portion of the hydraulic circuit 29 is connected to the high pressure port 12 of the control pressure chamber 19 and a low pressure portion of the hydraulic circuit 29 is connected to the low pressure port 13.
  • the compression chamber 18 is integrated with its inlet 7 and its outlet 8 in a cooling circuit 30 of an air conditioning device 31 and thus part of the air conditioning device 31st In the cooling circuit 30, a capacitor 32 is further incorporated, which is flowed through by ambient air, optionally with the aid of a blower 33, such as indicated by arrows 34.
  • the air conditioning device 31 advantageously further comprises - not shown here - a sump for the cooling medium, a temperature-controlled switch for switching on and off the air conditioning compressor 1, in particular in the form of a two-point controller, a switch associated with the temperature sensor, an expansion valve and an evaporator with switchable Evaporator fan to provide the cooling capacity.
  • the air compressor 1 thus provides a particularly simple way a compression option for the cooling medium without a drive device 26 of the motor vehicle 25 power must be withdrawn.
  • the present air compressor 1 offers a particularly compact and cost-effective design.
  • air conditioning is easily possible even during a motor stall, which in particular in modern hybrid drive concepts, which have as drive components in addition to a classic internal combustion engine, such as gasoline or diesel engine, one or more electrical machines.
  • an "atmospheric intermediate part" is provided between the compression chamber 18 and the control pressure chamber 19.
  • the compression chamber 18 and the control pressure chamber 19 in different, substantially separate housing parts, while a partial piston is displaceably mounted in each of the housing parts, and the partial pistons in turn via a corresponding mechanism connected to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un compresseur de climatisation (1) pour un véhicule (24), en particulier un véhicule automobile (25), qui comprend une chambre de compression (18) qui présente une entrée (7) pour un réfrigérant à comprimer et une sortie (8) pour le réfrigérant comprimé. Une paroi de la chambre de compression (18) est au moins en partie formée par un piston (3) déplaçable en translation. En l'occurrence, le piston (3) forme, au niveau de son extrémité opposée à la chambre de compression, au moins une zone de paroi d'une chambre de pression de commande (19). En outre, l'invention concerne un véhicule avec un tel dispositif de climatisation.
EP10760653A 2009-11-12 2010-09-21 Compresseur de climatisation pour un véhicule et véhicule Withdrawn EP2499366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009046649A DE102009046649A1 (de) 2009-11-12 2009-11-12 Klimakompressor für ein Fahrzeug, Fahrzeug
PCT/EP2010/063859 WO2011057843A1 (fr) 2009-11-12 2010-09-21 Compresseur de climatisation pour un véhicule et véhicule

Publications (1)

Publication Number Publication Date
EP2499366A1 true EP2499366A1 (fr) 2012-09-19

Family

ID=43414927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10760653A Withdrawn EP2499366A1 (fr) 2009-11-12 2010-09-21 Compresseur de climatisation pour un véhicule et véhicule

Country Status (5)

Country Link
US (1) US20120315170A1 (fr)
EP (1) EP2499366A1 (fr)
CN (1) CN102667155A (fr)
DE (1) DE102009046649A1 (fr)
WO (1) WO2011057843A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RS57919B1 (sr) 2011-12-16 2019-01-31 Poseida Therapeutics Inc Trpc4 modulatori za primenu u lečenju ili prevenciji bola
CN110985332A (zh) * 2019-12-16 2020-04-10 米铁山 一种并联式液体输送驱动装置
CN117065489B (zh) * 2023-10-17 2023-12-15 四川铸创安全科技有限公司 一种喷淋式降尘装置

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Publication number Priority date Publication date Assignee Title
US482776A (en) * 1892-09-20 Russell p
US1780336A (en) * 1928-12-31 1930-11-04 Glacier Inc Pumping mechanism
EP0421940A1 (fr) * 1989-10-06 1991-04-10 Vacumjet AG Pompe à commande pneumatique
DE3939650A1 (de) * 1989-11-30 1991-06-06 Daimler Benz Ag Hydraulische daempferanordnung
JPH1030449A (ja) * 1996-07-17 1998-02-03 Denso Corp 車両用冷凍サイクルの圧縮機
DE19957690A1 (de) * 1999-11-30 2001-05-31 Dietmar Gentsch Nutzung der Abgaswärme von Verbrennungskraftmaschinen und Zusatzheizung für ein Klimagerät und zum Heizen
US6981544B2 (en) * 2001-04-27 2006-01-03 Denso Corporation Air-conditioning apparatus including motor-driven compressor for idle stopping vehicles
DE10259071B4 (de) * 2002-07-16 2006-05-04 J. Eberspächer GmbH & Co. KG Temperiersystem für ein Fahrzeug
CN2641317Y (zh) * 2003-09-18 2004-09-15 李竞 往复式气体压缩装置
US20060185671A1 (en) * 2005-02-17 2006-08-24 Durr Systems, Inc. Powder conveying pump
DE102006009273A1 (de) * 2006-02-28 2007-08-30 BSH Bosch und Siemens Hausgeräte GmbH Linearverdichter mit Gasdruckfederung
DE102007029347A1 (de) * 2006-07-22 2008-06-05 Jeuken, Dieter Elektromagnetisch gesteuerter Verbrennungsmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011057843A1 *

Also Published As

Publication number Publication date
CN102667155A (zh) 2012-09-12
US20120315170A1 (en) 2012-12-13
DE102009046649A1 (de) 2011-05-19
WO2011057843A1 (fr) 2011-05-19

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