EP1033495A2 - Adaptor for a heating or cooling system - Google Patents

Abstract

The service adapter has connection apertures (2, 4) which can be locked by locking devices (17-19) to prevent the heating or cooling fluid entering the cavity of the casing (1) in which they themselves are located. The hydraulic device can be at least partly inserted into an aperture in a wall of the casing and can be fixed to and removed from the casing.

Description

The present invention relates to an adapter for Connection of a hydraulic device to a heating or Cooling system with a housing that has at least two connection openings for connecting a flow line and a return line has, the connection openings in the housing flow out. The invention also relates to a hydraulic Device, namely an electrically operated pump, especially a centrifugal pump, for pumping a medium in the heating or cooling system, which is a pump chamber with a Has inlet and an outlet, being within the Pump chamber an impeller is arranged.

It is known in the lines of a heating or cooling system hydraulic devices such as valves, sensors or To provide pumps, such hydraulic devices a hydraulic part with at least two connection options for the supply and return line. The installation of the known devices can be in a system from the outset can be provided, but it can also be done afterwards.

If a hydraulic device is to be converted into a Management of the heating or cooling system are introduced, so it is necessary to drain the whole system before the Line is separated at the appropriate point. First after installing the hydraulic device, the operation can of the system can be resumed.

Hydraulic devices are also known which include a Have hydraulic part that is introduced into the lines and on which a mechanically operable control panel or electrically operated actuator is attached. The Actuator or control unit can be replaced without the hydraulic part being removed from the line. The The hydraulic part acts as an adapter for the actuator or the attached control panel.

A disadvantage of all previously known, with or without an adapter Equipped hydraulic devices is that for installation or for maintenance work the entire heating or Cooling system must be drained so that the line on the for the hydraulic device provided point opened can be, whereby an escape of the water is inevitable. For this reason, assembly or maintenance work is very complex and therefore costly for the consumer.

Centrifugal pumps in particular are hydraulic devices known in a variety of embodiments and become many used in heating circuits in buildings. For installation the pump is in a suitable place, for example in Flow near the boiler, the pipe system interrupted and before the pump by means of flanges at the pipe ends is connected. Pumps are also known in which the hydraulic part from the electrical part through a containment shell is separated so that the electrical part for maintenance purposes is exchanged while the hydraulic part in the system can remain.

A disadvantage of all known pumps, however, is that the Subsequent installation of the pump or during maintenance work on the hydraulic part of the pump the water from the system must be drained before the pump can be dismantled. This work goes on with considerable impairments Operation of the system and associated with a large cost.

The object of the invention is on the one hand, a constructive simple and therefore inexpensive adapter to create the Possibility of using different types of hydraulic Offers devices and the exchange of the Device without draining the heating or cooling system enables. It is also an object of the invention to provide a electrically operated pump as hydraulic devices too create, which are connected to the system via the adapter can and which is great with little design effort Reliability, high ease of maintenance and so a great cost saving guaranteed.

These tasks are carried out by an adapter with the characteristics of claim 1 and a pump according to claim 17 solved.

The particular advantage of the adapter according to the invention is that it can be used anywhere in the system and on site the possibility of connecting any hydraulic Device for example of a thermostatic valve or Pump offers. The adapter according to the invention acts in the Kind of a lock, the housing interior being the Lock chamber forms, first by closing the Connection openings by means of the shut-off part from the pipe system is decoupled before this is now only a residual amount housing containing tap water is opened. In order to is the dry exchange by the adapter according to the invention or the dry maintenance of those connected via the adapter hydraulic device possible.

In a simple embodiment, the adapter can also be used without operating a hydraulic device, by the shut-off part arranged in the adapter by one of actuator accessible from the closed in the open position is brought. In the open Position is an unimpeded flow of the medium through guaranteed the adapter. In this embodiment met the adapter functions as a simple shut-off valve and stands for the later installation of a hydraulic one Device available. For the installation of the device the shut-off part closed, a cover of the in the Removed housing wall opening and the hydraulic Device at least with its part exposed to water inserted into the housing interior and detachable on the housing attached.

Even if an embodiment of the adapter according to the invention is conceivable in which the shut-off part via a fixed to the housing located control panel is actuated, it is from special advantage for the shut-off part an actuator to be provided, which is detachably attached to the adapter. So can the actuator via an easily detachable closure, for example, a bayonet lock attached to the housing become. It is advantageously provided that removal the actuator closing the port openings causes, the shut-off after removing the Actuator remains in the housing.

In a particularly advantageous embodiment, this is Shut-off part instead of through a separate actuator the hydraulic device placed on the adapter self-operated. This can be opened with a bayonet catch the housing can be placed, one of the closure closing rotation a pivoting of the shut-off in the opening position and vice versa. The application of the shut-off device located in the housing takes place in an advantageous embodiment of an in the housing interior movably mounted hydraulic insert instead of the power or form-fitting with an externally accessible part of the hydraulic device is connected.

In the hydraulic insert is an advantageous Introduced connecting channel that the liquid medium in the flows through the open position of the shut-off part. It is procure the hydraulic insert so that it interacts with the shut-off device is possible while the connecting channel according to the hydraulic device to be used can be trained. So the hydraulic insert can do so be designed so that a stepless in the connecting channel adjustable valve, especially a thermostatic valve, can be used. In this embodiment, the water flows through the connecting channel in the valve body of a known Thermostatic valve and out of the thermostatic valve back into the Interior of the housing and from there via the connection opening in the Trailing. The housing of the thermostatic valve is below Inclusion of the hydraulic insert used on the adapter releasably attachable. The hydraulic insert thus forms the Interface between the adapter according to the invention and the Thermostatic valve.

In another embodiment, the hydraulic insert is like this trained that one within the connecting channel multiple sensors can be used to measure certain parameters are. Flow meters or come as sensors Temperature sensors and pressure sensors into consideration.

In an advantageous embodiment, the shut-off part a bypass line on which the two connection openings connects with each other. The connection arises at the moment if the pump is dismantled by opening the screw cap becomes. Such a short circuit between the two lines is advantageous because it allows the system to be connected without Pump is tight and medium can flow through it. The In a way, the system remains operational.

It is also particularly advantageous to use the adapter with a Exhaust opening to be provided with a tap to do this when dismantling of the hydraulic component remaining in the housing interior Emptying water in a targeted manner. You can do this under the outlet a collecting container may be provided.

In a simple and advantageous embodiment, this is Housing of the adapter pot-shaped with in one end and / or connection openings arranged in the jacket. In the corresponding cylindrical interior, the individual components against each other and / or with each other be rotatably supported, the rotation through a the pot closing from the outside and the individual components holding part that clamps against each other, that over the bayonet catch can be fastened, twisted. The holding part can be part of the corresponding hydraulic device.

In another particularly advantageous embodiment the hydraulic insert as the pump housing of a centrifugal pump trained and receives a pump impeller. In one such a hydraulic insert is on the one hand a central one arranged inflow channel for the suction mouth of the impeller and on the other hand, an outlet channel behind which the impeller surrounding spiral channel provided. The hydraulic insert is thereby by an externally attachable to the adapter Fastening part held in the function of a bearing plate. The fastening part is in turn advantageously over a bayonet lock attached to the housing.

It is a central idea of the pump according to the invention, that the hydraulic part in the wet room by one is surrounded by separate housing, which as a recording for the serves hydraulic components and that enables the Mouth openings of the lines carrying the medium through the to shut off the externally operable shut-off part or short circuit. The housing designed as an adapter on the one hand assumes the function of a lock, initially locked against the system before the in the Chamber components are removed. On the other hand can a short circuit between when the pump is disassembled the mouth openings are realized when connecting the Pump becomes ineffective and the mouth openings with suction and Pump discharge connection connects.

The decisive advantage of the pump described is that not only the electrical but also the hydraulic Part together with the impeller from the system Maintenance purposes can be removed without any System lines must be completely drained. In addition, the adapter can be used in the case of new buildings installed and closed from the outside by a lid the pump into the System is integrated. The functionality of the Line system is already through before the pump is integrated the chamber through which medium can flow, the Shut-off part is actuated by an actuator.

In a special embodiment, the actuation of the Shut-off part possible by moving the drive part. So can act upon the shut-off part in addition Actuators are dispensed with. It can also be guaranteed be that a removal of the drive part a closing of the Shutting part causes so that an unintentional opening of the System can be excluded. That point of view is particularly relevant for increased operational safety.

Advantageously, is inside the housing interior Hydraulic insert arranged the the hydraulic function of the Pump supports. In this hydraulic application, the feed and Has drain channels, the impeller is at the same time Impeller chamber stored. The hydraulic insert ensures thus a high flexibility of the pump, because for different Pump types and pump sizes different hydraulic inserts can be used. The system is therefore arbitrary can be changed later and can be the corresponding Requirements are adjusted. In the case of a centrifugal pump it is advantageous to use the hydraulic with a central To provide suction channel through which the water from the Housing interior reaches the impeller before the medium in radial direction to the outflow channel is discharged.

In order to transfer the Shut-off part from the closing to the opening position or vice versa, it is advantageous to Hydraulic insert and the shut-off part rotatable within the To store the housing and also the shut-off part and the Connect the hydraulic insert positively in the direction of rotation. Thus a rotation of the hydraulic insert causes one simultaneous rotation of the shut-off part and thus Closing or opening the connection openings.

In a particularly preferred embodiment, this is Drive part additionally with a bayonet lock Housing connected, a closing of the closure by Rotation of the drive part an opening of the shut-off part causes. The assembly of the pump according to the invention in the System provided connection adapter is then such that the drive part with hydraulic insert and motor in the housing used or placed on the housing and by a Rotation around a pitch circle via the bayonet catch with the Housing is connected. Because at the same time when closing Shut-off part opens, the pump is immediately after assembly ready for operation and the line open. It is advantageous a mechanical locking means is provided which the drive part. against in the closed position of the bayonet catch Opening secures so that an unwanted dismantling of the pump is prevented.

In a particularly advantageous embodiment, this Drive part, in particular made of plastic, Holding part with which the hydraulic insert and that Shut-off part to be kept in the interior of the housing and that seals the housing to the outside like a lid. The Holding part thus serves on the one hand for fixing the holder Hydraulic components and on the other hand takes the electrical Components on the side facing away from the hydraulics. It is opposite the housing and the hydraulic insert sealed by sealing rings. A made of plastic Holding part also ensures a magnetic one Flow between the motor windings and within the Impeller arranged magnets. At the same time, the Plastic a certain flexibility, which is a bracing of the stacked hydraulic components in the interior of the housing guaranteed.

In a particularly advantageous embodiment, this Hold a pin-like projection in the housing, which forms a stub axle for mounting the impeller. The impeller is advantageously on a in the Inserted metal ball on the front of the axle. The electrical components carried by the holding part, which the Stator windings and the control electronics include are in an advantageous embodiment of a cover cap covered, with the cover cap removable on the holding part is attached. Like the holding part itself, the Cover cap made of plastic to a Contribute weight and cost reduction. Furthermore can be provided that the cover cap rotatable on the holding part is held, with a rotation of the cap over a Wave on a potentiometer or other electronic Adjustment part acts and the change of an operating parameter the pump, especially the speed.

dezentrale" Pumpe eingerichtet, die nicht zentral in der Umgebung eines Heizkessels, sondern dezentral in der Nähe eines Heizkörpers eingesetzt wird. Eine jede dieser im System angeordneten dezentralen Pumpen versorgt diejenigen Wärmeübertragungselemente, insbesondere die Heizkörper, die innerhalb des thermisch abgeschlossenen Raumes angeordnet sind. Gerade im Falle dieser dezentralen Pumpen kommen die Vorteile der erfindungsgemäßen und über den Adapter anschließbaren Pumpe besonders zum tragen, da nunmehr innerhalb des Systems, insbesondere an den Wärmeübertragern, mehrere als Adapter fungierende Gehäuse vorgesehen werden können, auf die nachträglich die Pumpen aufsetzbar sind. Die erfindungsgemäße problemlos nachträglich zu installierende Pumpe bietet dabei besonderen Schutz vor Vandalismus, der insbesondere auf frei zugänglichen Baustellen um sich greift. So ist es denn möglich, die Pumpen erst kurzfristig nach dem Bezug der Wohnungen zu installieren, wobei die Dichtigkeit des Systems jedoch schon im Bauzustand durch den Kurzschluß über der Absperrteile oder durch ein Abdecken der Adapter mit Deckeln getestet werden kann.The pump according to the invention is particularly suitable for use as a so-called

decentralized "pump set up, which is not used centrally in the vicinity of a boiler, but decentrally in the vicinity of a radiator. Each of these decentralized pumps arranged in the system supplies those heat transfer elements, in particular the radiators, which are arranged within the thermally sealed room. Straight In the case of these decentralized pumps, the advantages of the pump according to the invention, which can be connected via the adapter, come into play particularly since now several housings acting as adapters can be provided within the system, in particular on the heat exchangers, on which the pumps can subsequently be fitted The pump, which can be easily retrofitted, offers special protection against vandalism, which is particularly prevalent on freely accessible construction sites However, the system can still be tested in the state of construction by short-circuiting the shut-off parts or by covering the adapter with covers.

Figur 1:

einen Schnitt durch einen erfindungsgemäßen Adapter mit Pumpe,

Figur 2:

einen axialen Schnitt durch den Adapter nach Figur 1,

Figur 3:

einen Schnitt durch einen Adapter mit stirnseitigen Anschlußöffnungen und

Figur 4:

einen Adapter mit aufgesetztem Thermostatventil und

Figur 5:

ein Absperrteil mit Bypaßkanal.

Advantageous embodiments of the invention are shown in the drawings 2 and are described in more detail below. It shows :

Figure 1:

2 shows a section through an adapter according to the invention with a pump,

Figure 2:

2 shows an axial section through the adapter according to FIG. 1,

Figure 3:

a section through an adapter with front connection openings and

Figure 4:

an adapter with attached thermostatic valve and

Figure 5:

a shut-off part with a bypass channel.

In Figure 1 is an adapter for connecting a centrifugal pump shown in a heating or cooling system. The adapter has a cup-shaped housing 1, in the end wall of a connection opening 2 is introduced for a flow line 3. In the Side wall of the housing 1 is an opening 4 for a return line 5 provided. On the floor of the interior of the housing is a shut-off part 6 placed on a central arranged pin 7 plugged and rotatable about this is stored. The one opposite the connection opening 2 The front of the case is open and is replaced by a Lid-shaped holding part 8 closed from plastic. The Holding part 8 is by means of a bayonet catch 9 Housing 1 held, the bayonet lock by a Not shown locking means in the closed position is secured.

A hydraulic insert 10 is inserted in the housing interior, which is also rotatably mounted in the interior of the housing. The hydraulic insert 10 is operatively connected with the shut-off part 6, so that a twisting of the hydraulic insert rotation of the shut-off part results. Is between the holding part 8 and the hydraulic insert there is also a positive connection, so that twisting of the holding part 8 to close the bayonet lock Twisting the shut-off part 6 causes.

The hydraulic insert 10 is on the one hand opposite the holding part 8 through an O-ring seal 11 and on the other hand opposite the Housing 1 sealed by an O-ring seal 12 so that an escape of the medium from the adapter is prevented. The Hydraulic insert 10 according to Figure 1a is for receiving a Pump impeller 13 set up, the impeller 13 on a is rotatably mounted on the molded part 8 axis. The The impeller 13 is driven by magnetic fields which are based on the Impeller 13 arranged rotor magnets 14 through the holding part 8 work through. The hydraulic insert 10 is, so to speak, as Pump chamber with a centrally arranged inlet connector 15 and an outlet 16, which is in the interior of the Housing 1 located medium through the inlet 15 to the impeller 13 fed and via the outlet 16 into the return line 5th is pumped.

In this embodiment there are between the hydraulic insert 10 and the inner housing wall sealant 17 in the form of Shut-off devices aligned perpendicular to the plane of rotation provided (Figure 1b) that a seal between the Hydraulic insert 10 or the shut-off part 6 and the wall of the Effect housing 1.

The holding part 8 has a pin 18 which on the Holding part 8 is formed and a ball in the end face 19 is held in a holder. The drive of the impeller takes place by means of magnetic fields, which pass through the top surface of the Pass holding part through and from stator windings 20 are generated on the side facing away from the hydraulic insert Side of the holding part 8 are arranged. At the same time the holding part 8 is necessary for regulating the pump Electronics 22 which, like the stator windings 20, from one Holding part 8 held cover 21 are covered.

The cover cap 21 is in this example via a shaft 24 is rotatably held on the holding part 8, a rotation of the Cover 21 an adjustment of a potentiometer 23 and thus the adjustment of a pump parameter, in particular the Speed.

In Figure 2 is a section through the housing 1 of the adapter shown in Figure 1. In the illustration above, the Hydraulic insert 10 and the shut-off part 6 rotated so that the Passage through the adapter from the connection opening 2 to Port 4 is open. There is a shut-off means 18 for this moved away from the opening 2 and the outlet channel 16 of the Hydraulic insert 10 brought into register with the opening 4. In the lower part of Figure 2 is the closed position shown. This is the use of shut-off part 6 and and Hydraulic insert 10 rotated so that the shut-off means 18 the opening 2 comes to rest. The outlet duct 16 is twisted against the inside wall of the case while the two shut-off devices 17a and 17b can abut against each other for contact and close the opening 4.

In Figure 3, as in Figure 1, a housing 1 with a as Pump housing trained hydraulic insert 10 shown. In In this embodiment, however, both connection openings are 2 and 4 arranged in the front of the housing. For closure of the two openings 2 and 4, the shut-off part 6 has two Shut-off shut-off means 25a and 25b (FIG. 3b), which are integrally formed on the shut-off part 6. The shut-off means 25a and 25b are compared to the housing 1 through the openings 2 and 4th surrounding sealing rings 26 sealed. The flow path is with arrows A and B. In the embodiment according to Figure 2, the cap 27 on the holding part 8 via a Bayonet lock 26 held firmly on the housing 1. The Power electronics and control electronics are in this Embodiment on a placed on the holding part 8 Electronics carrier 28 arranged.

In Figure 4, the adapter is inserted with one Thermostatic valve 31 shown. With the thermostatic valve 31 is a known valve, the housing 32 is modified so that it can be placed on the housing 1 is and is held over the bayonet lock 9. The Housing 1 of the adapter corresponds to that of the embodiment Figure 1, with an extra for connecting the Thermostatic valve 31 suitable hydraulic insert 33 used becomes. In this hydraulic insert 33 is a connecting channel 34 introduced, the water from the connection openings 2 in Direction of arrow C to one surrounded by valve seat 35 Opening leads. The opening is in a known manner by a Valve plate 36 can be closed.

The openings 2 and 4 are made by rotating the valve housing 32 opened or closed. The valve housing acts for this 32 on the hydraulic insert 33 in the manner described the shut-off part 37, with its formed shut-off means 38a and 38b the openings 2 and 4 can be closed.

In Figure 5 is a shut-off part 6 with a bypass line 39, the shut-off part 6 as described in the preceding Embodiments known in a housing 1 rotatable is stored and by rotating the not shown Drive part can be positioned. In the shown Bypass position (Figure 5b) connects the bypass line 39 Inlet opening 2 with the outlet opening 4. The shut-off part is sealed against the openings via O-rings 40.

Claims (16)

Adapter for connecting a hydraulic device to a heating or cooling system with a housing, which has at least two connection openings for connecting a flow line and a return line, the connection openings opening into the housing interior,
characterized by that the connection openings (2, 4) can be closed by a shut-off means (17, 18, 19, 28) of a shut-off part (6) which can be actuated from the outside and which can be actuated from the outside to prevent the heating or cooling medium from entering the interior of the housing (1) that the hydraulic device can be at least partially inserted into the interior via an opening in a housing wall and detachably fastened to the housing (1). Adapter according to claim 1,
characterized in that the shut-off part (6) can be actuated by an actuating member which is accessible from the outside and is removably held on the housing (1), the shut-off part (6) closing the connection openings (2, 4) in the housing (1) after removal of the actuating member remains. Adapter according to claim 1,
characterized in that the shut-off part (6) can be actuated by the hydraulic device releasably attached to the housing (1), which is operatively connected to the shut-off part (6) via a hydraulic insert (10) which is movably mounted in the interior. Adapter according to claim 3,
characterized in that a connecting channel (24) through which the liquid medium flows in the open position of the shut-off part (6) is introduced into the hydraulic insert (10). Adapter according to claim 4,
characterized in that a valve, in particular a thermostatic valve (21), is arranged in the connecting channel (24) of the hydraulic insert (10). Adapter according to one of the preceding claims,
characterized in that the hydraulic device is a pump operated by an electric motor, in particular a centrifugal pump, the hydraulic insert (10) being designed as an impeller chamber for an impeller. Adapter according to claim 6,
characterized in that the electric motor and the impeller (13) form a common drive part of the pump, which is releasably attached to the housing (1), with a release of the drive part causing the shut-off part to move from the open to the closed position. Adapter according to one of the preceding claims,
characterized in that the drive part can be fastened to the housing (1) via a bayonet lock (9) and in that opening the bayonet lock (9) causes the shut-off part (2) and the outlet opening (4) to be closed by the shut-off part (6), the shut-off part (6) remaining in the housing (1) after removal of the drive part. Adapter according to one of the preceding claims,
characterized in that the holding part (8) carries the motor windings (20) and the control electronics (22) on the side facing away from the impeller (13). Adapter according to one of the preceding claims,
characterized in that magnets (14) are arranged in the impeller (13), the magnetic field of which is axially aligned, and that an axial magnetic field can be generated by the motor windings (20) in such a way that the impeller (13) can be driven thereby. Adapter according to one of the preceding claims,
characterized in that the shut-off part (6) and the hydraulic insert (10) are held in the installed state by a holding part (8) which can be placed on the open end face from the outside, the holding part (8) being releasably attachable to the housing (1). Adapter according to one of the preceding claims,
characterized in that a housing (22) of the hydraulic device (21) forms the holding part (8). Adapter according to one of the preceding claims,
characterized in that the holding part (8) interacts with the hydraulic insert (10) in such a way that a rotation of the holding part (8) moves the shut-off part (6) from the closing to the opening position and vice versa. Adapter according to one of the preceding claims,
characterized in that the holding part (8) is held on the housing by a bayonet catch (9). Adapter according to one of the preceding claims,
characterized in that the shut-off part (6) has a disc or a ring which is rotatably mounted in the housing coaxially with the hydraulic insert (10) and the two shut-off means (17, 18, 19, in particular shaped as valve or cover flaps) , 28) for closing the connection openings (2,4). Adapter according to one of the preceding claims,
characterized in that the shut-off part (6) has a bypass channel (39) with which the openings (2, 4) can be connected.

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