CN205493753U - A carbon dioxide cycle system for surpassing supercritical carbon dioxide dish washer - Google Patents

Abstract

The utility model discloses a carbon dioxide circulation system for a supercritical carbon dioxide dishwasher, which comprises a liquid carbon dioxide storage tank, the liquid carbon dioxide storage tank is provided with a feeding inlet, a circulation inlet and a circulation outlet, and the circulation outlet of the liquid carbon dioxide storage tank is connected with the The inlet of the supercharger is connected, the outlet of the supercharger is connected to the inlet of the heating device, and the outlet of the heating device is connected to the front-end interface of the dishwasher through the front-end stop valve of the dishwasher; the rear-end interface of the dishwasher is also included. The rear end interface of the dishwasher is connected to the gaseous carbon dioxide storage tank through the dishwasher rear end valve, and the gaseous carbon dioxide storage tank is connected to the circulation inlet of the liquid carbon dioxide storage tank through a refrigerator. The utility model has the characteristics of safety, reliability, low cost, etc., and can be used in conjunction with supercritical carbon dioxide dishwashers and widely used in catering industries such as families, restaurants, and hotels.

Description

A carbon dioxide circulation system for a supercritical carbon dioxide dishwasher

technical field

The utility model relates to a carbon dioxide circulation system for a supercritical carbon dioxide dishwasher.

Background technique

At present, the dishwashers used in our daily life are all washed with water, which has the following disadvantages: high water consumption, and the water consumption of a single use of the dishwasher is more than 10L. Today, when water resources are extremely precious, dishwashers are used as The products that are often used in household appliances undoubtedly consume a lot of water resources; to cause environmental pollution, in order to enhance the cleaning effect, traditional dishwashers will add appropriate amount of "dishwashing powder", "rinse agent", "softening salt" and so on during the cleaning process. additive. During the cleaning process, these chemical substances will be discharged into the natural environment together with the dishwashing wastewater, causing pollution to the environment; at the same time, because trace amounts of chemical substances remain on the tableware, they will have a certain impact on human health.

When the temperature of carbon dioxide is higher than the critical temperature Tc=31.26°C and the pressure is higher than the critical pressure Pc=72.9atm, the properties of carbon dioxide will change. Its density is close to that of liquid, its viscosity is close to that of gas, and its diffusion coefficient is 100 times that of liquid. It has amazing dissolving power and has wide application prospects. Supercritical carbon dioxide is one of the most widely studied fluids at present. It has the following characteristics: the critical temperature of CO2 is 31.26°C, the critical pressure is 72.9atm, and the critical conditions are easy to achieve; the chemical properties of CO2 are inactive, colorless, odorless and non-toxic. Good safety; cheap price, high purity, easy to obtain. Therefore, supercritical carbon dioxide is a good cleaning medium, and the carbon dioxide circulation system of the supercritical carbon dioxide dishwasher is a device used in combination with the supercritical carbon dioxide dishwasher.

Utility model content

The technical problem to be solved by the utility model is to provide a carbon dioxide circulation system for a supercritical carbon dioxide dishwasher, which has the characteristics of safety, reliability and low cost.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

A carbon dioxide circulation system for a supercritical carbon dioxide dishwasher, including a liquid carbon dioxide storage tank, the liquid carbon dioxide storage tank is provided with a feeding inlet, a circulation inlet and a circulation outlet, the circulation outlet of the liquid carbon dioxide storage tank and the inlet of a supercharger Connection, the outlet of the supercharger is connected to the inlet of the heating device, and the outlet of the heating device is connected to the front interface of the dishwasher through the front end valve of the dishwasher; it also includes the rear interface of the dishwasher, and the rear end of the dishwasher The interface is connected to the gaseous carbon dioxide storage tank through the cut-off valve at the rear end of the dishwasher, and the gaseous carbon dioxide storage tank is connected to the circulation inlet of the liquid carbon dioxide storage tank through the refrigerator.

The utility model is further improved in that:

A stop valve at the front end of the liquid carbon dioxide storage tank is provided at the front end of the circulation inlet of the liquid carbon dioxide storage tank; a back end stop valve of the liquid carbon dioxide storage tank is provided at the back end of the circulation outlet of the liquid carbon dioxide storage tank.

A carbon dioxide purifier is arranged between the shut-off valve at the rear end of the dishwasher and the gaseous carbon dioxide storage tank.

The booster is a diaphragm pump.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

The device is connected with a supercritical carbon dioxide dishwasher to form a closed-loop circulation system for use, including a liquid carbon dioxide storage tank for storing liquid carbon dioxide; the liquid carbon dioxide storage tank is equipped with a feeding inlet for cleaning up the consumption of carbon dioxide to a certain extent. Supplementary ports; the circulation outlet of the liquid carbon dioxide storage tank is connected to the inlet of the supercharger, and the outlet of the supercharger is connected to the inlet of the heating device, so that the liquid carbon dioxide becomes super-closed after being pressurized and heated, and enters the supercritical carbon dioxide dishwasher The cleaning kettle cleans the tableware. After the pressure is reduced by the back pressure valve, the supercritical carbon dioxide undergoes a phase change into a gas phase. The stop valve at the back end of the dishwasher is connected to the gaseous carbon dioxide storage tank. The storage tank is connected with the circulation inlet of the liquid carbon dioxide storage tank through a refrigerator, and the gaseous carbon dioxide is cooled and phase-transformed into a liquid storage tank to complete the entire working cycle. The utility model has the characteristics of safety, reliability, and low cost, and can be used with Supercritical carbon dioxide dishwashers are widely used in catering industries such as homes, restaurants, and hotels.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the attached drawings: 1, liquid carbon dioxide storage tank; 1-1, circulation outlet of liquid carbon dioxide storage tank; 1-2, feeding inlet of liquid carbon dioxide storage tank; 1-3, circulation inlet of liquid carbon dioxide storage tank; 2 , supercharger; 3, heating device; 4, supercritical carbon dioxide dishwasher; 4-1, back pressure valve; 4-2, cleaning kettle of supercritical carbon dioxide dishwasher; 4-3 supercritical carbon dioxide dishwasher 5. The front end valve of the dishwasher; 6. The back end valve of the dishwasher; 7. The gaseous carbon dioxide storage tank; 8. Refrigerator; 9. The front end valve of the liquid carbon dioxide storage tank; 10. The liquid carbon dioxide storage tank Tank rear end shut-off valve; 11. Carbon dioxide purifier; 12. Vacuum pump.

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As can be seen from the embodiment shown in Figure 1, the present embodiment includes a liquid carbon dioxide storage tank 1, the liquid carbon dioxide storage tank is provided with a feeding inlet 1-2, a circulation inlet 1-3 and a circulation outlet 1-1, and the liquid carbon dioxide storage tank 1 The circulation outlet 1-1 of the supercharger is connected to the inlet of the supercharger 2, the outlet of the supercharger 2 is connected to the inlet of the heating device 3, and the outlet of the heating device 3 is connected to the front interface of the dishwasher through the dishwasher front stop valve 5 ; Also includes the rear interface of the dishwasher, the rear interface of the dishwasher is connected to the gaseous carbon dioxide storage tank 7 through the dishwasher rear stop valve 6, and the gaseous carbon dioxide storage tank 7 is connected to the liquid carbon dioxide storage tank 1 through the refrigerator 8 The loop imports 1-3 connections.

A stop valve 9 at the front end of the liquid carbon dioxide storage tank 1 is provided at the front end of the circulation inlet 1-3 of the liquid carbon dioxide storage tank 1;

A carbon dioxide purifier 11 is provided between the dishwasher rear end shut-off valve 6 and the gaseous carbon dioxide storage tank 7 .

The booster 2 is a diaphragm pump.

working principle:

After the device is connected with the supercritical carbon dioxide dishwasher, a closed-loop circulation system is used. The liquid carbon dioxide storage tank is used to store liquid carbon dioxide; the filling inlet of the liquid carbon dioxide storage tank is used to replenish the carbon dioxide consumption to a certain extent; The liquid carbon dioxide in the liquid carbon dioxide storage tank is pressurized and heated by the supercharger and the heating device to become a super-close state, and then enters the cleaning tank of the supercritical carbon dioxide dishwasher to clean the tableware. After the pressure valve depressurizes, supercritical carbon dioxide undergoes a phase change into a gas phase, and the gaseous carbon dioxide is filtered and purified by a carbon dioxide purifier and then recovered to a gaseous carbon dioxide storage tank. , to complete the entire working cycle.

Claims (4)

1. the carbon dioxide cycle system for supercritical carbon dioxide dish-washing machine, it is characterized in that: include liquid carbon dioxide storage tank (1), described liquid carbon dioxide storage tank is provided with feed supplement import (1-2), circulation import (1-3) and loop exit (1-1), the loop exit (1-1) of described liquid carbon dioxide storage tank (1) is connected with the import of supercharger (2), the outlet of described supercharger (2) is connected with the import of heater (3), and the outlet of described heater (3) is connected with the front end interface of dish-washing machine by dish-washing machine front end stop valve (5)；Also include the back end interface of dish-washing machine, the back end interface of described dish-washing machine is connected with gaseous carbon dioxide storage tank (7) by dish-washing machine rear end stop valve (6), and described gaseous carbon dioxide storage tank (7) is connected with the circulation import (1-3) of liquid carbon dioxide storage tank (1) by refrigerator (8).

A kind of carbon dioxide cycle system for supercritical carbon dioxide dish-washing machine the most according to claim 1, it is characterised in that: it is provided with liquid carbon dioxide storage tank front end stop valve (9) in circulation import (1-3) front end of described liquid carbon dioxide storage tank (1)；It is provided with liquid carbon dioxide storage tank rear end stop valve (10) in loop exit (1-1) rear end of described liquid carbon dioxide storage tank (1).

A kind of carbon dioxide cycle system for supercritical carbon dioxide dish-washing machine the most according to claim 1, it is characterised in that: it is provided with purifying carbon dioxide device (11) between described dish-washing machine rear end stop valve (6) and gaseous carbon dioxide storage tank (7).

A kind of carbon dioxide cycle system for supercritical carbon dioxide dish-washing machine the most according to claim 1, it is characterised in that: described supercharger (2) is membrane pump.