FI59480B - 4-FAILED VALVE AVSEDD FOER VAERMEPANNOR - Google Patents

Description

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48Γφ ^ (11) UTLÄGGNINGSSKRIFT 594 80 C (45) Patent ny Prev 10 03 1931 .dfiQLpTi Patent neddelat ^ (51) K * .ik? /Int.ci.3 F 24 H 9/20, F 24 D 19/10 FINLAND — FINLAND (21) p * t «* ttih« ww — PM «nt» »6tu>« nj 793969 (22) Hak «ml * ptM - Ameknlngidag 18.12.79 (23) AlkupUvt — GIM (h« ad «g 18.12.79 (41) Tullut JulklMkal - Bllvlt effwicHg PMMCU. |. R.klMriMNt <»m NUitMkatpmn J.

retent · och regiatorttyralsen Amokan uthgd och utl. * krtftun publicurad 30.0 ^ .81 (32) (33) (31) Pjrr4 * «if muoikmt — Begird prtorltut (71) (72) Paul Jaakko Peltola, Yliopistonkatu 6 C 1 * 3, 20110 Turku 11,

Suomi-Finland (FI) (74) Forssen & Salomaa Oy (51+) 2 + -way valve for heating boilers - lt-vägsventil avsedd för värmepannor

The invention relates to a 4-way valve for boilers having a vane-like member pivotally mounted inside the valve housing, a first opening communicating with a return water flow channel, a second opening communicating with an outlet water flow channel, a third opening communicating with a boiler return water flow a fourth orifice communicating with the water flow passage from the boiler, and a base-like portion separating the third orifice and the fourth orifice, respectively.

Heating boilers use 4-way valves with a rotating vane placed inside the valve body and four openings. One opening is connected to the return pipe of water returning from the heating coil and the other opening is connected to the outlet pipe leading to the heating coil. The third opening is in turn connected to the return water pipe leading to the boiler and the fourth opening to the hot water pipe leaving the boiler. Such a 4-way valve comprises flange-like parts, of which the 4-way valve is attached to the heating boiler. In addition, inside the 4-way valve there is a base with a substantially I-shaped cross-section, which separates the above-mentioned third and fourth openings.

2,59480 Such a 4-way valve works properly when the 4-way valve is installed on top of the boiler. In this case, as soon as the 4-way valve is opened, hot water can flow into the heating coil.

If such a 4-way valve is installed on the bottom or side of the boiler, the following harmful phenomenon occurs. The water flowing from the heating coil to the return pipe cannot flow back to the heating boiler, but flows past the valve to the outlet water pipe leading to the heating coil. This disadvantage is due to the fact that when the 4-way valve is located at the bottom or side of the boiler, there is back pressure, because the colder water would have to flow upwards and the water would then not naturally be able to return to the boiler.

The object of the invention is to provide an improvement on the previously known 4-way valve solution. It is a more detailed object of the invention to provide a 4-way valve in which the flow of colder water returning from the heating coil past the valve to the outlet water side is eliminated.

The objects of the invention are achieved by a 4-way valve, characterized in that the base-like part in the valve housing of the valve is widened so that the third opening and the fourth opening, respectively, are relatively narrow, so that when the wing-like member is turned over the base-like part of the widened part through the valve ceases immediately and a part of the water entering the boiler flows through the third opening down the flow channel to the heating boiler.

In the 4-way valve according to the invention, it is realized to form the base inside the valve housing wide enough, whereby the return opening leading to the heating boiler and the outlet opening leading out of the heating boiler, respectively, are narrow. In this case, as soon as the vane inside the valve passes the edge of such a wide base, the harmful bypass flow ceases and the return water can flow into the boiler. As a result, the water temperature control performed by the 4-way valve according to the invention can be performed in a reliable manner, and the control curve does indeed follow an almost ideal control curve.

The invention will be explained in detail with reference to a preferred embodiment of the invention shown in the figures of the accompanying drawings, to which, however, the invention is not intended to be exclusively limited.

3,59480

Figure 1 shows a schematic cross-section of a 4-way valve with a detrimental bypass flow.

Figure 2 shows a schematic cross-section of a preferred embodiment of a 4-way valve according to the invention.

Figure 3 shows a schematic cross-section of another preferred embodiment of a 4-way valve according to the invention.

In the embodiment according to Figure 1, a 4-way valve known from the prior art is generally indicated by reference numeral 10. The 4-way valve 10 comprises an end piece 11 and flange-like parts 12 and 13. Inside the valve housing there is a substantially I-shaped base 14 and a rotatably mounted vane 15. Reference numeral 16 denotes a return pipe leading from the heating coil back to the valve 10, along which the return water flows. Reference numeral 17, in turn, denotes an outlet pipe leading from the valve 10 to the heating coil, along which the hot outlet water flows. Reference numeral 18 denotes an opening through which the return water flows into the valve body of the valve 10. Reference numeral 19, in turn, denotes an opening through which the hot leaving water flows out of the valve 10.

Reference numeral 20 denotes a boiler to which valve 10 is preferably attached by its flange-like parts 12 and 13. Reference numeral 21 denotes a pipe through which return water is arranged to flow into heating boiler 20 and reference numeral 22 denotes a pipe through which hot water is arranged to flow from boiler 20 10 in the valve housing. Reference numeral 23 denotes an opening delimited on the one hand by the base 14 and on the other hand by the second flange-like part 13 of the valve 10. Accordingly, reference numeral 24 denotes an opening delimited on the one hand by the base 14 and on the other hand by the second flange-like part 12 of the valve 10.

When the known 4-way valve 10 according to Fig. 1 is placed on top of the heating boiler 20, no harmful phenomena occur. In this case, the return water 25 flowing in the return pipe 16 when the wing 15 is in the position according to Fig. 1 is divided into two flow branches. Part of the return water 25 flows through the valve 10 to the outlet pipe 17 as a flow 25a and part of the return water 25 flows through the opening 23b as a flow 25b to the return pipe 21 to the boiler 20. Hot water is in turn arranged to flow from the boiler 20 as a flow 26 59480 h turns into a circulating flow 26b which coincides with the partial flow 25b of the return water 25. As can be seen in Figure 1, streams 25b and 26b merge and flow as a mixed stream 27 to the boiler 20.

When the known valve 10 according to Fig. 1 is placed on the bottom or side of the heating boiler 20, the liquid flows 25 and 26 no longer correspond to Fig. 1. In this case, the return water 25, after passing the opening 23, cannot flow upwards due to the back pressure, but turns into a flow directed to the outlet water pipe 17, as shown in Fig. 1 by the broken lines 25b *.

A preferred embodiment of the 4-way valve according to the invention is shown in Fig. 2. In Fig. 2 the same reference numerals are used as in Fig. 1. According to the basic idea of the invention, the base 14 is widened so that the openings 23 and 24 are very narrow. The widened portion of the base 14 is indicated by reference numeral 14a. When the vane 15 passes the edge of the widened part 14a of the base 14, the detrimental bypass flow ceases immediately and the return water 25b can flow through the opening 23 down the pipe 21 to the boiler 20. Since the opening 24 leading to the outlet pipe 17 is very narrow in the 4-way valve 10 10, there is also a free rotation 26b according to FIG. However, the obstruction of free circulation 26b is not a detrimental phenomenon.

In addition, the openings 18 and 19 in the valve 10 according to the invention are preferably shaped so as to cause a certain throttle. In this case, due to the constricted openings 18 and 19, the return water 25 cannot flow too "slippery", because the back pressure in the opening 19 increases, whereby the return water 25 tends to apply pressure to the pipe 21 going to the boiler.

In Fig. 3, the widened part 14a of the base is built into the pivoting vane 15, whereby the same advantages as in the valve according to the invention are obtained (Fig. 2). The preferred shape of the opening 19 has been replaced by an extension 15a built into the pivoting wing 15. Figure 3 is thus another embodiment of the basic embodiment of the invention.

Only two preferred embodiments of the invention have been described above, and it will be clear to a person skilled in the art that numerous modifications can be made to it within the scope of the inventive idea set out in the appended claim.

Claims (1)

A 59-way valve for boilers with a wing-like member (15) pivotally mounted inside the valve housing, a first opening (18) communicating with a return water flow passage (16), a second opening (19) communicating with an outgoing water flow passage ( 17), a third opening communicating with the return water flow passage (21) leading to the boiler (20), a fourth opening (24) communicating with the water flow passage (22) leaving the boiler (20), and a base-like part (14), separating the third opening (23) and the fourth opening (24), respectively, characterized in that the base-like part (14) in the valve housing of the valve (10) is widened so that the third opening (23) and the fourth opening (24) are formed relatively narrow, whereby when the wing-like member (15) is turned as it passes the boiler-side return water bypass flow (25b ') on the edge of the widened part (14a) of the base-like part (14), the valve (10) through it ceases immediately and the part of the water (25b) entering the boiler flows through the third opening (23) down to the flow channel (21) to the heating boiler (20).