Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
  • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Definitions

• the invention relates to a pump unit for heating systems according to the features specified in the preamble of claim 1.
• Centrifugal pumps of this type are also increasingly being used in the lower performance classes used.
• Such units typically have an electronic one Speed controller, e.g. B. a frequency converter or Phase control and speed control.
• Speed controller e.g. B. a frequency converter or Phase control and speed control.
• the unit can cover a wide range of performance cover, but needs with regard to the setting and thus adaptation to the existing heating system trained specialist personnel.
• Appropriate actuators are usually used for setting present on the unit housing. It is also from EP 0 664 399 A1 known, in addition to the actuators provided on the unit itself to provide a wireless remote control with which this Settings can be made.
• Small-capacity heating pump units in particular are large-scale products, for example in tens of thousands are produced daily. With products of this kind you are natural endeavors to keep the variety of models as small as possible in order to further reduce manufacturing costs. However, this requires that the Pump unit, which replace models of different equipment should include all "features" of all units to be covered got to. On the other hand, it is known that simple heating pump units also by the non-specialist or by a non-specialist, such as for example, an electrician. Also in In this case, it must be ensured that the unit is reliable and works as intended without the user having to deal with complicated maps and corresponding setting options must deal with.
• the invention is based on that state of the art described in the introduction based on the task to create a pump set that meets the requirements on the one hand a pump unit supported by modern electronics is sufficient, on the other hand, however, without lengthy settings as a standard unit can be used.
• the invention provides that the pump unit on a Throttle curve (if it is an aggregate with only one Control) or a control curve (if it is a Unit with control) is preferably preset at the factory and otherwise a change in this setting only to be carried out via a separate setting device.
• a separate setting device With the invention Solution, it is therefore possible to use a pump set diverse electronic equipment even for the simplest applications to provide without the user the otherwise rather complicated Setting this aggregate is burdened, nonetheless but with the same unit a modern electronically controlled one or to provide a regulated pump unit, which in Connection with the separate adjustment device to the individual Requirements is customizable.
• the factory setting on the unit can handle a throttle curve or a control curve are like a pump set without control electronics or with fixed control curve.
• the setting device can either be wired or which will preferably be the case wireless, i. H. via an infrared or Radio connection to the pump set.
• a wired connection for example, on the unit a connector receptacle may be provided in the terminal box, such connector receptacles are well known, for. B. for the Inclusion of diagnostic plugs.
• the setting device is wireless with the pump set to communicate, this uses one on the device side Sender and aggregate one receiver ahead.
• the setting device has a transmitter and a receiver, as well as the pump unit, so that they can also be used as Control device can be configured to the operating data of the To receive the pump set, save it and display it if necessary. It in this context, in particular EP 0 664 399 A1 referred in which such a control and monitoring device in individual is described.
• the pump set is not inadvertently from other transmission devices, for example radio remote controls for Garage doors, infrared remote controls for televisions, radio telephones etc. is set, it will be between the adjusting device and the pump unit transmitted signal conveniently coded.
• the coding is preferred, especially in the case of digital transmission a key preceding each command signal or in another appropriately.
• Such signal encryption in itself are well known.
• the pump set can be adjusted simple design (as a factory-set unit) be offered inexpensively without such an adjusting device.
• the settings to be made are exclusive should be reserved for the specialist, suffice if this acquires an adjusting device, since it can be used with each pump unit of a certain type or different types (each according to the design).
• there will be another one Cost advantage result because even for this demanding requirements Not one setting device for every pump unit is to be provided, but with a single adjusting device any number of pump units can be set.
• Furthermore there is a further cost advantage in production because that to the otherwise usual adjustment device located on the pump unit is completely dispensed with. This is also regarding the Reliability of the unit is an advantage, especially in the area of Adjustment device where numerous switches or contacts are provided are, it can easily cause interference. Such a potential A source of interference is therefore excluded from the outset.
• a switch / button is provided inside the terminal box is then operated when the cover of the terminal box is removed or put on. This is regularly necessary if the electrical supply line is connected or disconnected.
• This Reset switch thus ensures that when installing or removing a Pump unit in a heating system, always an electrical one Connect or disconnect the connection cable in the terminal box, the factory setting is reached again. In this way can be ensured that a pump unit that already was installed in one heating system and another Use should be returned to the original factory has been made and thus the initial settings wide range of applications is available.
• a factory setting is preferably carried out so that the pump unit in the range between 80% and 100% of the maximum Performance is operated. Such an attitude ensures that the unit is operated with comparatively high efficiency, if the factory default setting is retained. Furthermore high pump output is available. From the maximum power The factory setting will deviate downwards when the unit is not resistant to permanent loads in this area or if there is some security against thermal or other Overload should be given.
• a conventional pump unit consists of a Discharge port and a suction port with a housing in between, in the centrifugal pump and motor in the usual way coaxial are arranged one behind the other.
• the electronic components are on the side of the motor or pump housing arranged, for example the frequency converter and the control electronics.
• At least part of the housing is for the purpose of electrical connection to the supply network through a cover completed.
• the lid is secured by screws and after Removing the screws, the cover can be lifted off so that the terminals are accessible.
• the aforementioned reset switch is designed as a push button, namely as a break contact, which when closed Cover switched, d. H. remains in its open position.
• the pushbutton is loaded with spring force by removing the cover in its original position, in which the contacts are electrical are conductively connected to each other.
• the corresponding reset the default settings are made by a short circuit of the Contacts a memory is deleted, which is via the input device contains the entered settings.
• the adjustment device either via a cable connector is connected to the pump unit in a line-connected manner or but works wirelessly, has its own power supply in the form a battery or an accumulator and consists of a closed Housing, on the top of which the setting and operating elements are arranged. If the adjuster at the same time is also intended to serve as a control, regulating and control device At least one display is provided, on the data of the pump unit or input data can also be displayed.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Control Of Non-Positive-Displacement Pumps (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=7823679

Family Applications (1)

Country Status (1)

Cited By (3)

Citations (4)

• 1998
  • 1998-02-20 EP EP98102964A patent/EP0866228A3/fr not_active Withdrawn

Patent Citations (4)

Non-Patent Citations (1)

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