Detachable Heating Cassette for Formwork
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Solution Overview
Problem
Existing formwork systems for in-situ concrete production are inefficient as they require permanent integration of heating elements, making them cumbersome to transport and use in varying weather conditions, and previous solutions, such as magnetic connections, are heavy and difficult to detach.
Innovation Solution
A formwork system with a reversibly detachable heating cassette connected via a mechanical device, such as a tongue and groove or screw connection, allowing easy attachment and detachment from a frame panel formwork element, reducing weight and enhancing transportability and ease of use by incorporating a heating mat with woven heating wires and insulation for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heating elements are permanently integrated into the formwork element, then heating function is ensured, but the formwork becomes cumbersome to transport and cannot be used in warm weather
Solution Approach 1:
The formwork system is divided into separate components: the frame panel formwork element and the heating cassette. The heating cassette can be detached and transported separately, allowing the formwork to be used in warm weather without the heating components, while ensuring heating function is available when needed.
Solution Approach 2:
The connection between the heating cassette and frame panel formwork element is made dynamically adjustable through a reversible connecting device. This allows the heating cassette to be attached when heating is required and detached when not needed, adapting the system to varying weather conditions.
2Adaptability or versatility
If magnetic connection is used to attach the heater to the steel formwork, then the heater can be detached, but the heater becomes relatively heavy and difficult to transport and detach
Solution Approach 1:
The magnetic connection system is replaced with a mechanical connecting device that uses a tongue and groove connection combined with a clamping element. This mechanical system achieves the same detachable functionality without the weight and handling difficulties associated with magnetic connections.
3Reliability
If the heater is always transported and set up together with the formwork element, then heating function is available, but handling effort increases especially in warm weather
Solution Approach 1:
The heating cassette is separated from the frame panel formwork element, allowing it to be transported independently. This segmentation enables the heating component to be left at the construction site or removed based on weather conditions, reducing unnecessary handling effort during warm weather operations.
4Adaptability or versatility
If an existing frame panel formwork element is retrofitted with heating capability, then versatility is improved, but device complexity increases
Solution Approach 1:
The frame panel formwork element is designed with a universal connecting device that can accommodate the heating cassette. This universal connection system allows existing formwork elements to be retrofitted with heating capability without requiring complex custom modifications, maintaining simplicity while enhancing versatility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient heating of in-situ concrete at both high and low temperatures while being lightweight and easy to handle and transport, with the heating cassette only needing to be installed during low temperatures or frost, thus improving operational efficiency and reducing handling efforts.
Implementation Method 1
The heating device (18) is tensioned in the frame (12)... The heating device can have a heating wire... The electrical heating element is preferably in the form of a heating mat
Implementation Method 2
DE 196 04 835 A1 discloses a device for sealing duct walls. The device comprises an elastically expandable cover on which electric radiant heaters are arranged. The radiant heaters can be in the form of incandescent lamps
Implementation Method 3
through-hole in the frame, delimited by the frame, is at least partially closed by insulation
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a heater in the form of a heating cartridge (10) for a frame-board formwork element of a formwork (44). The heating cartridge (10) has a heating device (18) and can be mechanically connected to the frame-board formwork element. The mechanical connecting device comprises a first part arranged or formed on the heating cartridge (10) and a second part arranged or formed on the frame-board formwork element. The mechanical connecting device can be designed in particular in the form of a screw connection, a tongue-and-groove connection, a hook-eye connection, a clamping connection or a wedge connection. The heating cartridge (10) preferably has a frame, in the through-opening of which the heating device (18) is at least partially arranged. The first part of the mechanical connecting device is particularly preferably arranged or formed on the frame.