SE501484C2 - Device for a heating or cooling system with a continuously flowing system fluid in a closed circuit - Google Patents

Abstract

A device in a heating or cooling system with a continuous flow of system liquid in a closed conduit circuit (1), including a deaerator circuit (3 - 13) with a deaerator (7) for deaerating a diversion flow (4) from said system liquid and a replenish liquid (11) that is delivered to the deaerator circuit. A valve means (5) is arranged to optionally feed the diversion flow (4) and the replenish liquid (11), respectively, to a reducing means (6) that is connected to the deaerator. A pump device (8) is arranged to sustain a sufficient liquid flow and to feed the deaerator diversion flow and the deaerator replenish liquid, respectively, to the conduit circuit.

Description

501 10 15 20 25 30 35 484 DESCRIPTION OF THE INVENTION The object of the present invention is therefore to provide a device of initially stated kind, where degassing of both existing system fluid and diluent can occur partly continuously, partly with very simple and cheap part, which if necessary can even be designed to be handled only manually.

This object is achieved by the device according to the invention has obtained the characteristics set out in claim 1. Ilen.

Further developments of the invention are set out in sub-patent claims. vein.

BRIEF DESCRIPTION OF FIGURES The invention will be described in more detail below with reference to reference to the accompanying drawing, which shows a preferred embodiment of the invention.

The figure shows a wiring diagram of a device according to the invention for degassing both existing system fluid as added diluent.

PREFERRED EMBODIMENT The figure shows a line circuit 1, so-called main flow circuit ("Trunk line") for one in the direction of the arrow 2 continuously flowing system fluid in a heater (not shown) or cooling system. A device according to the invention consists thereby of a degassing circuit in the form of a series connection of the following successive sub-devices: an inlet means 3 i in the form of a hand-operated shut-off valve, so-called til - for receiving from the line circuit 1 of a subflow symbolized by the arrow 4, a preferably spring-loaded 10 15 20 25 30 35 3 501 484 loaded non-return valve 5, a throttle (throttle valve) 6, which greatly reduces the pressure of the partial flow 4, so that gases in is released, an degasser 7 for removing the thus released gas, a pumping device 8 for maintaining the required poor fluid flow and to increase the fluid pressure in level with the pressure of the system flowing in the line circuit 1 the liquid for delivery via a hand valve 9 of the one thus in the degasser 7 degassed the liquid to the line circuit 1.

A schematically indicated source 10 for a diluent flow, symbolized by the arrow 11, is via a shut-off valve 12 (so-called dilution valve, which can be either a hand valve or an automatic valve) and a non-return valve 13 (preferably spring-loaded), connectable to the inlet and 6a on strypdonet 6.

The non-return valve 5 is dimensioned so that it closes, if the pressure on its outlet side 5b exceeds the pressure on its inlet side 5a. This means that if the diluent ll fed to the choke 6 at a higher pressure than the pressure of the the flow 4, then the non-return valve 5 closes, so that the choke 6 that is, only feed diluent to the degasser 7. If venti- len 12 is closed, the supply of diluent is interrupted to the choke 6, which therefore means that the high pressure on the outlet side 5b of the non-return valve 5 is omitted, so that the non-return valve tilen 5 opens and lets the partial flow 4 from the joint circuit 1, so that now instead this partial flow is degassed.

The function of the device is as follows: During normal operation, both shut-off valves are 3 and 9 open, while the diluent 12 is closed. Thereby flows constantly a partial flow 4 through the exhaust gas 7, i.e. a continuous This results in gradual degassing of the system liquid in the control circuit l. When there is a need to dilute the system fluid with new system fluid, only needs a single, single simple action is taken, namely to open the dilution valve 12.

In this case, the non-return valve 5 closes automatically, as the diluent 501 484 4 10 15 20 25 30 35 the liquid flow ll gives a higher pressure on the non-return valve 5 outlet side than that the partial flow 4 gives on the inlet of the non-return valve 5 loppssida Sa. The partial flow 4 is now shut off by the reverse tilen 5, so that only the diluent flow ll flows through the degasser 7, where it is degassed and then supplied to the via the constantly open shut-off valve 9.

When sufficient dilution of the diluent has taken place, the diluent valve 12 is returned manually, whereby the non-return valve 5 eater opens due to the pressure of the diluent no longer acts on the outlet side 5b of the non-return valve 5, whereby again the partial flow 4 flows through the exhaust gas 7 and then eats to the line circuit 1 via the open shut-off valve 9.

The device according to the invention thus obtains automatic degassing of the diluent ll, as soon as this is fed to the restrictor 6, while it is removed from the line circuit 1 the drained partial flow 4 is continuously degassed during that time when diluent is not supplied to the choke 6._ Connection of diluent and simultaneous degassing of this can thus be initiated by means of a single action, ie actuation of the dilution valve 12, which makes the device invention is revolutionary simple compared to the better known diluents.

It is obvious that the non-return valve 5 can be replaced by a non shown three-way valve. Alternatively, the non-return valve 5 obtained by, for example, manual shut-off of valve 3, as soon as diluent is to be supplied to choke 6.

The exhaust gas 7 can, for example, be a so-called cyclone deaerator marketed under the name AirclonC>, or a turbulence breaker marketed under the name SpiroventC>.

Claims (3)

10 15 20 25 30 35 5 501 484 P a t e n t k r a v Device in a heating or cooling system with a system liquid continuously flowing in a closed line circuit (1), comprising a degassing circuit (3-13) connectable to the line circuit (1) which contains a valve means (6), the inlet side of which (6a) is by means of an inlet means (3) connectable to the line circuit (1) for receiving a partial flow (4) therefrom, and whose outlet side (6b) is connectable to the inlet side (7a) of an exhaust gas (7), the outlet side (7b) is connected by means of an outlet means (8, 9) to the line circuit (1) for returning said partial flow to the line circuit (1), in that the valve means consists of a choke (6), characterized in which the inlet side (6a) is also connectable to a source (10) for a diluent flow (11), wherein a valve device (5, 12) is arranged to optionally connect said partial flow (4) resp. said diluent flow (ll) to the inlet side (6a) of the choke, so that said partial flow (4) resp. said diluent flow (11) can optionally be degassed in the degasser (7) and then supplied to the line circuit via said outlet means (8, 9). _ Device according to claim 1, characterized in that the valve device (5, 12) comprises a non-return valve (5) whose inlet side (5a) is connected to said inlet means (3), and whose outlet side (5b) is connected to the inlet side (6a) pà strypdonet (6). Device according to claim 2, characterized in that the pressure of the diluent flow (II) is dimensioned higher than the pressure of the partial flow (4), so that the non-return valve (5) shuts off the partial flow (4) as soon as the diluent flow (II) is received by the restrictor (6). ).