Disposable cartridge for mixing exothermic or endothermic reaction substances, and relative cartridge-support assembly
The cartridge has two compartments normally for containing two substances of the mixture, which are separated by a preferential break member; one of the two compartments contains a liquid solvent, and is fitted with a bellows having an intake valve and for producing a pumping action by varying the volume of the bellows by exerting pressure on the bellows. The bellows first causes breakage of the member to mix the two substances, and then produces flow of the mixture to accelerate its reaction. The cartridge is insertable inside a cavity of a support for heating or cooling in predetermined conditions.
1. A disposable cartridge for mixing exothermic or endothermic reaction substances, comprising:
a first compartment and a second compartment, said compartments having substantially rigid walls, and said compartments separately containing two substances;
a preferential break member separating said first and second compartments;
a bellows connected to said second compartment for pressurizing air so as to cause a solvent to break said preferential break member and mix said substances to provide a mixture, and for generating a flow operable to accelerate a reaction without shaking the cartridge;
an intake valve for drawing in outside air; and
a conduit being formed in an outer wall of the cartridge to release the pressurized air pumped into the compartments by operation of said bellows.
2. The cartridge of claim 1 , wherein one of said substances is a solute in solid granular form, and is normally contained in a first of said compartments; and the other of said substances is a liquid solvent and is normally contained in a second of said compartments.
3. The cartridge of claim 2 , wherein said solute is calcium chloride or sodium thiosulphate, and wherein said solvent is water, a mixture of water and ethylene glycol, or a mixture of water and ethyl alcohol.
4. The cartridge of claim 1 , wherein said flow is produced by repeatedly operating said bellows following breakage of said preferential break member.
5. The cartridge of claim 1 , wherein said outer wall encloses said second compartment.
6. The cartridge of claim 5 , wherein the cartridge is tapered and has a given straight axis, and wherein said second compartment comprises a first portion coaxial with said axis and has a lateral wall forming said outer wall.
7. The cartridge of claim 6 , wherein said second compartment further comprises:
a second portion also coaxial with said axis and having one end communicating with said first portion, and having another end supporting said preferential break member.
8. The cartridge of claim 7 , wherein said second portion of the second compartment extends axially, and is smaller in diameter than said first portion, said wherein the first compartment houses said second portion, and is substantially coaxial with it.
9. The cartridge of claim 8 , wherein said bellows is connected to an opposite end of said first portion from said second portion, said bellows also being coaxial with said axis.
10. The cartridge of claim 9 , wherein said bellows comprises an undulated lateral wall made of elastic material.
11. The cartridge of claim 10 , wherein said bellows is made of the same material as the cartridge.
12. The cartridge of claim 7 , wherein said preferential break member is defined by a thin sheet of aluminium fitted to the end supporting said preferential break member.
13. The cartridge of claim 7 , wherein said preferential break member is integral with the end supporting said member, and has a groove to assist breakage.
14. The cartridge of claim 1 , wherein said compartments are made of low-cost plastic material, and wherein said preferential break member is made of easily breakable plastic or metal, and has a maximum thickness of 0.1 mm.
15. The cartridge of claim 14 , wherein said low-cost plastic material is a low-density polyethylene, and wherein said preferential break member is made of polyethylene or ethyl vinyl acetate.
16. The cartridge of claim 1 , further comprising:
a support for heating or cooling, wherein, said support is substantially fixed and said cartridge is connected removably to said support prior to operation of said means.
17. The cartridge of claim 16 , wherein said support has a cavity for housing said cartridge.
18. A cartridge for mixing exothermic or endothermic reaction substances, comprising:
a first compartment containing a first substance;
a second compartment containing a second substance;
a preferential break member being part of a wall of said second compartment, said preferential break member being in communication with said first compartment in such a way that when said preferential break member breaks, said second substance mixes with said first substance to provide a reaction mixture;
a pressurization source connected to said second compartment, said source pressurizing the interior of said second compartment thereby breaking said preferential break member and generating a flow of the reaction mixture to facilitate mixing said first and second substances;
an intake valve for drawing in outside air; and
a conduit in an outer wall of the cartridge to release the pressurized air pumped into the second compartment by operation of said pressurizing source.
19. The cartridge of claim 18 , wherein the first compartment and the second compartment are substantially coaxial, and a portion of the second compartment comprising the preferential break member is housed within the first compartment.
20. The cartridge of claim 18 , wherein the preferential break member is made of easily breakable plastic or metal and has a maximum thickness of 0.1 mm.
21. The cartridge of claim 18 wherein the second substance is a liquid.
22. The cartridge of claim 18 wherein the first compartment is comprised of rigid walls.
23. The cartridge of claim 18 wherein the first compartment is comprised of rigid walls and the second compartment is comprised of rigid walls.
24. A disposable cartridge for mixing exothermic or endothermic reaction substances, comprising:
a first compartment operable contain a first substance;
a second compartment operable to contain a second substance;
a bellows for pumping air to cause a pressurization of the first substance;
an intake valve operable to draw outside air into the bellows;
a preferential break member between the first compartment and the second compartment, and operable upon breaking in response to the pressure, to mix the first substance and the second substance; and
a conduit being formed in an outer wall of the cartridge to release the pressurized air pumped into the compartments by operation of said bellows.
25. The cartridge of claim 24 , wherein the conduit is operable to release pressurized air pumped into the first compartment by the bellows.
26. The cartridge of claim 24 wherein the flow is produced by repeatedly operating the bellows.
27. The cartridge of claim 24 wherein the first substance is a solid granular form substance and contained in the second container, and the second substance is a liquid solvent contained in the first container, and wherein the bellows is coupled to the first container.