EP0408788A1 - Device consisting of a heat exchanger with integrated heat accumulator for domestic hot water supply - Google Patents

Abstract

The present invention relates to a device which has a heat exchanger in the form of two or more panel radiators parallel to one another, and a cavity which surrounds these panel radiators and is surrounded by a wall, said panel radiators being flowed through by hot water, while heated domestic water can be removed from the cavity. Such devices consisting of a heat exchanger, which is flowed through by hot water, with a heat accumulator for domestic hot water supply are known. To overcome the disadvantages of the state of the art, the device described below is proposed. The device consists of a heat exchanger, which in turn consists of a number of panel radiators (1) which are flowed through by hot water and which are arranged in a closed housing (2), and is suitable for space heating and for domestic hot water supply and characterised by a regulating device. To regulate the temperature and the domestic hot water supply and/or the temperature of the domestic hot water, a manually operable hand regulator (9) is built into the heating forward run, which is functionally connected to a probe (13) which in turn is connected via a capillary tube (16) to the cold water supply, the device moreover being characterised in that the hand regulator (9) interrupts the domestic hot water supply with short opening and closing times of approximately 7 seconds, the probe (13) being functionally connected to the hand regulator (9) and to the capillary tube (16) which in turn is arranged in the cold water supply pipe. <IMAGE>

Description

The present invention relates to a device which has a heat exchanger in the form of two or more plate heaters arranged parallel to one another, and a cavity which surrounds this plate heater and which is surrounded by a wall, the plate heaters mentioned being flowed through by hot water while heated from the cavity Domestic water can be removed. Devices of this type consisting of a heat exchanger through which hot water flows and with a heat accumulator for extracting process water are known.

The present invention is based on the prior art, which represent heat exchangers with an integrated heat store in which plate radiators through which hot water flows in parallel are surrounded by a closed housing, which allows connections for the passage of process water and its removal in the heated state.

Such a device is listed in OF DE 3211376Al. Devices of this type have the following disadvantages:
The heating flow and heating return have internal weld seams (in the hot water section) and cannot be checked during the pressure test (possibly leakage, heating water mixes with drinking water). A precise regulation with regard to the inflow of hot or heating water in connection with the quantity and the desired temperature is not possible.

Another disadvantage of the prior art is the statements regarding the mechanical strength and stability as well as the selection of the materials. The system can only be operated without pressure.

The invention therefore makes it its task to propose a device consisting of a heat exchanger with an integrated heat accumulator for the removal of process water, in which two connections are provided for better control, in which the room and process water temperature is set without auxiliary energy in the heating flow, the room - And hot water temperature is controlled with a controller, which is also secured against deformation or bulge at higher pressures and which is heated at high continuous flow, for example provided with a convector panel when connecting to a central heating system or to a long-distance power plant to protect the room from overheating.

This object is achieved by a device which is described in the following description and in the protection claims.

The present invention is explained in more detail with reference to drawings. The device according to the invention enables a housing 2 through which hot water flows to remove heated service water. This is of particular importance when using small-volume radiators which are fed by central heating or district heating plants and when used use water temperature and / or quantity controlled by means of a hand controller 9.

This hand controller 9 is functionally connected to a remote sensor 13. This remote sensor is arranged in the cold water inlet outside the device, so that the room and process water temperature can be controlled with a single controller, namely the hand controller 9.

The device proposed here also has particular advantages due to the new construction mentioned at the beginning. It can be connected to central heating systems or district heating plants without disrupting their functionality.

An essential object of the present invention are the opposing distribution plates 3 in connection with the connecting rod 4, the above-mentioned distribution plates 3 being welded to the housing 2 at points welded 3.1.

It is an essential part of the invention that the stability against the pressure of the inlet water is ensured and the throughput of the process water and its temperature can be easily controlled. The controller has the task of interrupting the mass flow in terms of volume, but in larger systems the mass flow would not be sufficient. The average operating time of the storage tank or instantaneous water heater is a maximum of 10 minutes, then the device is charged and ready for use. Another function of the controller is to control the room temperature. The sensor (temperature sensor) is available for this. The controller is connected to the remote sensor 13 by a capillary tube 16. The controller is located in the heating flow, the sensor in the cold water inlet, outside the radiator. This is the essence, you can measure the temperature in the cold water pipe, which automatically charges to room temperature. In this case it reaches the point where it closes at a variable room temperature of 20-25 ^o . In reality the temperature is 40-60 ^o higher in the storage.

• 1. Der Massenstrom kann unterbrochen werden, Anschluß von mehreren Geräten bei gleicher Pumpenleistung, bei Erreichen der Temperatur schaltet der Regler aus.
• 2. Die Schließzeit des Reglers beträgt ca. 6-7 Sek. Dies ist sehr wichtig, herkömmliche Thermostate brauchen 30 Minuten. Wird heißes Wasser entnommen, so wird der Fühler aktiviert und reagiert sofort (der Fühler wird von Ka
  
  wasser angestromt). Der Boiler braucht dann nicht erst leergefahren zu werden um zu reagieren, sondern geht schon bei Entnahme von ca. 1 Liter Wasser in Betrieb.

Main features of the system:

• 1. The mass flow can be interrupted, connection of several devices with the same pump output, when the temperature is reached, the controller switches off.
• 2. The regulator's closing time is approx. 6-7 seconds. This is very important, conventional thermostats take 30 minutes. If hot water is removed, the sensor is activated and reacts immediately (the sensor is operated by Ka
  
  water supplied). The boiler then does not have to be run empty to react, but starts operating when approx. 1 liter of water is drawn off.

The plate heater 1 with simultaneous hot water heating is the prototype of a heat exchanger in which at least two plate heaters are arranged parallel to one another and form the wall of a cavity. Flowing process water is to be heated in this cavity on the flow principle. The cladding 2.1 serves as a housing 2 and is equipped with an insulation 2.2. The connections on the service water side are arranged at the top and bottom, the heating side on the side. The heating plates and the brewing water cavity (housing 1) are welded. The entire radiator is made of chrome-nickel steel. In the process water cavity, several opposing pairs of sheets 3 are arranged (distance between two adjacent water channels 1 sheet) which are connected to a connecting rod 4. These fittings are designed to ensure static safety (bulging) and increase the heat exchanger area (increase in performance). This also creates turbulence that counteracts limescale. The panel radiators and the surrounding wall have a corrugated surface, which increases the strength.

Feature of this controller 9:
Opening and closing time approx. 7 sec. This results in a very short signal flow.
The integration of this controller into the heating system already described can be described as progress in the invention. The controller 9 interrupts the hot water supply. The temperature sensor is located in the cold water pipe.
The connection of the controller 9 to the heat exchanger is that the temperature can be limited upwards. There are two ways to set the temperature range upwards. The controller should regulate the throughput that is required.
The sensor is therefore located in the cold water pipe so that it reacts immediately if any tap is turned on. Otherwise, half or all of the boiler would have to be empty will drive, in this case the controller will stop immediately after one liter of water has been removed. The value of the controller is set accordingly high, but reacts immediately when the sensor is washed with cold water. This ensures that the boiler is always fully charged.
For summer operation, the ventilation slide 10 is closed (interruption of the convection) and the room heating is completely out of operation.

• Fig. 1 eine schematische Darstellung einer mit der neuen Vorrichtung ausgestattenen Hausanlage,
• Fig. 2 eine Darstellung einer mit der neuen Vorrichtung versehenen Naßzelle,
• Fig. 3 eine schematische, perspektivische Darstellung der erfindungsgemäßen Vorrichtung,
• Fig. 4 einen Durchschnitt der Vorrichtung
• Fig. 5 zwei Ansichten von Versteifungsblechen gemäß Fig. 3 und 6,
• Fig. 6 eine schematische Darstellung des Durchflusses des zu erwärmenden Brauchwassers durch die Vorrichtung gemäß Fig. 3 in Zusammenhang mit Fig. 2,
• Fig. 7 eine perspektivische Darstellung der Verkleidung,
• Fig. 8 eine perspektivische Darstellung des Gehäuses zum Wärmespeicher,
• Fig. 9 eine Seitenansicht der Darstellung gemäß Fig. 8,
• Fig. 10 eine Seitenansicht (links) der Vorrichtung,
• Fig. 11 einen Teilquerschnitt eine Plattenheizkörpers mit Darstellung der Rohrquerschnitte,
• Fig. 12 eine perspektivische Darstellung einer Anordnung der erfindungsgemäßen Vorrichtung auf den Hubkonsolen,
• Fig. 13 eine perspektivische Darstellung einer auf Konsolen eingebrachten erfindungsgemäßen Vorrichtung,
• Fig. 14 eine perspektivische Darstellung der Isolierung der Vorrichtung,
• Fig. 15, eine Seitenansicht der Vorrichtung,
• Fig. 16 eine Darstellung des Vorganges des Einbringens der Lamellen 8.1 in das Gehäuse 2,
• Fig. 17 eine Ergänzung bezüglich der Montage der Vorrichtung in Zusammenhang mit Fig. 14,
• Fig. 18 die Möglichkeit, die Vorrichtung seitlich durch Ein­klappen eines Deckels zu verschließen,
• Fig. 19 eine Seitenansicht der Vorrichtung mit einem Hand­regler 9.

It shows:

• 1 is a schematic representation of a house system equipped with the new device,
• 2 is an illustration of a wet cell provided with the new device,
• 3 shows a schematic, perspective illustration of the device according to the invention,
• Fig. 4 shows an average of the device
• 5 shows two views of stiffening plates according to FIGS. 3 and 6,
• 6 is a schematic representation of the flow of the domestic water to be heated through the device according to FIG. 3 in connection with FIG. 2,
• 7 is a perspective view of the panel,
• 8 is a perspective view of the housing for heat storage,
• 9 is a side view of the illustration of FIG. 8,
• 10 is a side view (left) of the device,
• 11 is a partial cross section of a plate heater showing the pipe cross sections,
• 12 is a perspective view of an arrangement of the device according to the invention on the lifting consoles,
• 13 is a perspective view of a device according to the invention placed on consoles,
• 14 is a perspective view of the insulation of the device,
• 15 is a side view of the device,
• 16 is an illustration of the process of inserting the slats 8.1 into the housing 2,
• 17 a supplement regarding the assembly of the device in connection with FIG. 14,
• 18 the possibility of closing the device laterally by folding in a lid,
• 19 is a side view of the device with a hand controller 9.

List of reference numbers

• 1 panel radiator
  • 1.1 inflow of cold water
  • 1.2 Drainage of hot water (when hot water is drawn)
• 2 housings (as heat storage)
  • 2.1 Fairing
  • 2.2 insulation
• 3 stiffening plates
  • 3.1 welds
• 4 connecting rod
• 5 Arrow for entry of the cold water to be heated in the housing 2
• 6 Arrow for the heated domestic water to exit the housing 2
• 7 Arrow for flow direction of the domestic water to be heated within the housing 2
• 8 Cladding of the device
  • 8.1 slats
  • 8.2 Arrow for inserting the slats
• 9 hand controller in the heating flow in connection with a remote sensor in the cold water supply of the domestic water to be heated
• 10 ventilation sliders for room temperature control
• 11 insulation
• 12 lifting console
• 13 remote sensors
• 14 heating flow
• 15 heating return
• 16 capillary tube

Claims (4)

1. Device, consisting of a heat exchanger, which in turn consists of several plate radiators (1) through which hot water flows and which are arranged in a closed housing (2) and which device is suitable for heating the room and for drawing off hot water and is characterized by a control device.
To regulate the temperature and the hot water extraction and / or the temperature of the hot water, a manually operable hand controller (9) is installed in the heating flow, which is functionally connected to a sensor (13), which in turn is connected to the cold water inlet via a capillary tube (16) is connected and which is also characterized in that the manual controller (9) interrupts the hot water supply with a short opening and closing time of about 7 seconds, or the sensor (13) functions with the manual controller (9) and with the capillary tube (16) is connected, which in turn is attached to the cold water supply line. 2..Device according to claim 1, characterized in that the plate heating elements (1) in the housing (2) with stiffening plates (3) at welding points (3.1) are firmly connected to the housing (1) and also connected to one another with a connecting rod (4) are. 3. Apparatus according to claim 1 and 2, characterized in that the throughput through the housing 2 by the hand controller 9 is adjustable. 4. Apparatus according to claims 1-3, characterized in that a slide (10) for temperature control on the housing (2) is arranged.

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