FI114117B - Manifold for central heating system, has flow ports and return ports, both arranged so that incoming positions and/or positions of flow-pipes and return-pipes are adjustable in connection with installation - Google Patents

Abstract

The manifold has a dividing wall between an upper and a lower chamber. Flow ports and return ports for respective pipes are arranged so that incoming positions and/or positions of the flow-pipes and the return-pipes connected to the manifold are adjustable in connection with an installation of the manifold. The ports have flanges for mounting pumps (27) and return port adapters (28) between the manifold and the pipes.

Description

5, 114117

Manifold and modular pump

The invention relates to a manifold and a modular pump for use in a central heating system, and in particular a pat. in connection with a ground source heat pump according to application 20020407.

It is known to use a manifold in a central heating system to divide the heating system into independent circuits. In known manifolds, the outlet and return pipes of each circuit are adjacent to each other, and a pump is installed in either the outlet pipe or the return pipe. This imposes a certain requirement on the length of the manifold, since sufficient space must then be provided between the pumps for the circuit return pipe, any shut-off and non-return valves, and for operation. US. pat. 6092734 The length of the manifold according to 6092734 divided by 5 pumps and valves is at least 90 cm. Such a manifold does not fit inside a standard-size ground source heat pump housing, nor does it fit on a standard-size oil boiler.

15

In the aforementioned manifolds, the return and return connections are factory-fitted by welding to the manifold and hence their orientation and location are predetermined and can no longer be changed at the installation site. This often results in extra work and complicated plumbing, especially in retrofit cases where technology has not been taken into account during the construction phase.

20

The aforesaid manifold comprises housing structures which are not suitable for manufacturing by casting. The welds used there are also susceptible to corrosion.

The above manifold is of poor flow dynamics. It has several sharp edges inside it, eg truncated pipe ends. This problem could easily be eliminated if the manifold could be made by casting.

It is also known to make a modular manifold e.g. pat. 6345770. Ko. it is proposed that manifolds may be made in a modular or integral structure. When preparing. . With the aforementioned manifold modular, a single module can be made by casting. Ko. rat- *. 1: The splitting module has four joints which are sealed with an o-ring or the like.

•: 1 · · Thus, the 5-circuit manifolds have 20 seals on the O-ring, such a solution is short-lived and sensitive to leakage. Otherwise, the solution will have the same problems as the US. pat.

• · · 6092734 in manifolds. The length of the manifold is even longer.

*: ·: 35. ·. A: All of the above types of manifolds have a problem that is a disadvantage when using 'a heat source as a heat source'. If only some of the manifold circuits are running, the excess supply flow, ,,, · is fed back to the heat source return pipe, that is, in this case, back to the condenser of the ground source heat pump via the pressure equalization duct in the manifold. This ... 40 causes the temperature of the solution returning to the condenser to rise. The ground source heat pump condensed ',; The heating temperature is primarily determined by the temperature of the solution of the heating system returning to the condenser. Its temperature. In an underground heat pump, an increase in the condensation temperature results in a decrease in efficiency.

· • · • 1 · •, ·. It is an object of the invention to eliminate the above problems and to provide a manifold of a height; · 1 known to be significantly smaller than the known delta and length. The invention is also provided. · 1 ·. the manifold, which is advantageously manufactured in large sets by casting and thus can also be '1', can be easily shaped with the correct flow dynamics. The invention also provides: "· a manifold whose direction of each inlet and outlet can be freely selected by means of a modular pump, even at the installation site, but without the manifold being leak-proof.

^ 114117

The pressure equalization duct in the manifold of the invention is located outside the manifold and, if necessary, the fluid flowing therein can be directed to pass e.g. 20020407 through a hot water preheat tank in the domestic heat pump, thereby eliminating the problem of too high a temperature of the solution returning to the condenser of the geothermal pump.

5 Other benefits include: the modular pump can be mounted directly on the tank flange or feed line, for example, using a mounting flange. Additional modules comprising one or more circuits can also be installed in the manifold of the invention, and thus the manifold can be extended even after retrofitting. Then it is a flange connection which is not leak sensitive.

More specifically, the pump and manifold of the invention are characterized in what is set forth in the characterizing part of claim 1.

The invention will now be described in more detail with reference to the accompanying drawings showing the pump and manifold structures of the invention.

15

Figure 1 shows a front, side and partially sectional side elevation of the pump of the invention.

The pump body is preferably a cast iron body comprising a mounting flange (1) and a machined sealing surface (8), from which the pump is secured e.g. to the mounting flange 20 (16,18) in the manifold through the mounting holes (2). The pump housing comprises a pump housing (3) formed by casting or machining inside the pump housing. The suction opening (5) is in direct contact with the pump housing (3). The suction opening (5) is located in the center of the pump body, on the side facing the sealing surface (8), so that it is in direct contact with the space from which the liquid is pumped. The pump motor (4) and impeller (9) are for example Wiio's or Grundfors. in 25 production. The pump impeller (9) extends to the level of the suction port (5), so that the impeller is also in direct contact with the space from which the fluid is pumped. The pump motor (4) is fixed to the pump body with its own mounting screws and sealed to the pump body as it would be sealed in its own pump housing with its own seals (7). This allows the motor (4) and impeller (9) to be replaced without otherwise disassembling. The outlet pipe connection (6) is located on the pump,. 30 on the side of the body and the channel therein communicates with the pump housing (3).

»> · • I»

• I

..,.: Fig. 2 shows a return pipe assembly (12) for connection to a manifold according to the invention and. the retaining flange (10) as a front view, a side view and a cut side view. The return flange • ..: has a flange (10) in its external dimensions and in the dimensioning and placement of the mounting holes •: · · · 35 are consistent with the corresponding dimensions of the pump shown in Figure 1, each # · ,; front view shows. As a result, the pump or return pipe fitting can be mounted on any of the mounting flanges (16,18) of the manifold shown in Figure '' '3 and can be freely selected.

Figure 3 shows a manifold according to the invention with interlaced mounting flanges (16). The body (15) of the manifold i 'is preferably a casting body. The mounting flanges (16,18) in the manifold are preferably: ";; additionally, protrusions surrounding the flow openings (20), which are machined with sealing surfaces (19) and fastening holes or threads (17). ·,. An automatic venting valve is fitted The manifold has an external pressure equalization channel '· · · t 45 (23) which returns the excess flow to the heat source if only a portion of the * ·; · * circuits are active at one end. at one end, the upper chamber * * * of the manifold so that a connection is made between the chambers.

<»· * · 114117

Figure 4 shows a partial section of the manifold of the invention with interlaced mounting flanges. Within the manifold is a horizontal wall (24) separating the inside of the manifold into two chambers, the upper chamber (26) and the lower chamber (25), which are completely separated from one another. An opening provided with a non-return valve 5 can also be provided in the wall (24) as needed, which acts as a pressure relief channel between the chambers (25 and 26).

Figure 5 shows a manifold according to the invention with interlaced mounting flanges. Pumps (27) and return fittings (28) are attached to the manifold shown. The pumps and return ports are installed in parallel.

10

Figure 6 shows a manifold according to the invention, in which the pumps (27) and the return fittings (28) are mounted to point in different directions.

Figure 7 shows a manifold according to the invention with a heat source and five heating circuits connected thereto.

Fig. 8 shows a manifold according to the invention, in which the mounting flanges (16) for attaching the pumps (27) are fixed to each other at the top of the manifold head (29). There are no retaining flanges for the return links, but the return links (28) are integral with the bottom of the manifold 20 (30). The return pipe is located behind the outflow pipe and therefore does not require lateral space. The dimensions of the mounting flanges determine the minimum distance between the flow pipes. This solution provides a very compact manifold. The return pipes are factory-fitted, so that this manifold is less modifiable than the manifold shown in Figures 3-7. This manifold is therefore suitable for installation in confined spaces, such as inside a ground source heat pump 25 or on an oil boiler, and is also well suited for installation in new buildings.

Figure 9. When using a manifold according to the invention, pat. in the case of a ground source heat pump according to application 20020407, or in another heat pump, the pressure equalization channel (23) is replaced by tubular connections (31 and 32) from which the excess flow is controlled by a gold,. 30 chemistry via a hot water preheater. With this measure, the heat • •. ': the temperature of the liquid returning to the tea is reduced, which is an advantage of the heat pump;'; · Minnale.

• ·: As an alternative embodiment, the manifold body (15) and the mounting flanges (16 and 18) can be manufactured, for example, from a steel plate and a beam. ·: Welding.

• f I <».., 40 • t i • f • f • · k« »• t • · • • 1 45 • · i i <50 · · • * * * 1 ·» »·.

Claims (8)

1. Distributor stock and modular pump for use in a central heating system, comprising a distribution stock - a body (15) for the distribution stock - an upper chamber (26) - a lower chamber (25) - a wall (24) between the chambers - pumps (27) and supply terminals - return terminals (28) characterized in that the front and ends of the distributor stock have flow flanges (16, 18) provided with flow openings (20) for attaching the pumps (27) and the return terminals (28). Distributor stock according to claim 1, characterized in that the flanges (16) on the front of the distributor stock are arranged in an upper row and in a lower row, which are displaced in relation to each other such that the supply and return pipes, when mounted vertically, are next to each other when the distribution stock is viewed from the front. Distributor stock according to claims 1 and 2, characterized in that the wall (26) has one or more unidirectional valve channels through which the pressure between the chambers (25 and 26) is equalized. Distribution stock according to claims 1, 2 and 3, characterized in that the chambers (25 and 26) are connected by a pressure equalization channel (23) which is outside the distribution stock. Distribution stock according to claims 1, 2, 3 and 4, characterized in that the pressure equalization duct (23) has been replaced by pipe connections (31 and 32), through which the flowing liquid can be conducted via any heat consumer. Distribution stock according to claims 1, 2, 3, 4 and 5, characterized in that the pump (27) comprises a fastening flange (1) through which it raises suction in the direction of the shaft of the motor (4). 6 114117 Distributor stock according to claims 1, 4, 5 and 6, characterized in that the pumps (27) on the front side (29) of the distribution stock and the flanges (16) for attaching them are located in the upper part of the front stock (29), in communication with the upper chamber (26), and the return terminals (28) corresponding thereto have been mounted in the bottom (30) of the distributing stock and are in contact with the lower chamber (25). In this way, when the distribution pipe is received by the circuit, when the distribution stock is considered to be a family, the corresponding return pipe is in succession. Distribution stock according to claims 1, 2, 3, 4, 5, 6 and 7, characterized in that another distribution stock according to this invention has been installed in the fastening flanges (18) at its end.