Gao Yi took a shower, and it was hot, which was a rare enjoyment in this era. You must know that even in the best hotel in Shanghai at this time, the Licha Restaurant, the bath is only a 'Suzhou bathtub'. The so-called Suzhou bathtub is a kind of large clay tank produced in Suzhou, the height and diameter are about one meter two, and you can't lie down in it, you can only sit upright. Moreover, the water was added manually, and the servants had to carry buckets of water and pour it in.

In this environment, it is naturally impossible for Gao Yi to buy the shower equipment that Gao Yi needs from the outside world, so he can only design and build it himself. Fortunately, the entire second floor of the newly rented floor, as well as the space vacated by the discarded tables, chairs, benches, beds and cabinets, gave him plenty of space to improve his quality of life.

Gao Yi built the shower room in the back attic. The reason for this location is that it is easy to enter and drain water, and the pipes can go directly from the exterior wall, and then make a hole in the wall to enter the interior, without having to break through the layers of floor slabs to destroy the original layout of the house.

This has the added benefit of keeping the pipes supplying the hot water as short as possible. Hot water packets wrapped in straw and cotton are set up on the eaves, and the wall breaks through the eaves to the shower head and only needs to lay about two meters of pipes; The boiler is located on the sundeck directly below the hot water pack, and the distance between the two is only one person's height.

The boiler is a simplified version of the straight tube boiler designed by Gao Yi himself, to put it bluntly, a circle of thinner copper pipes is installed in the charcoal furnace, when connected to the tap water, the water flow will be divided into more than a dozen strands, each flowing into a copper tube, so that the total heating area becomes larger, so that the water flow in the tube can heat up quickly.

In order to prevent the hot water from flowing back into the water pipe, Gao Yi also built a cold water tower with a slightly larger capacity than the hot water package on the roof ridge. The tap water will be poured into the cold water tower first, and then the valve between the cold water tower and the water pipe will be cut off, and then the valve between the cold water tower and the charcoal stove will be opened. Since the chilled water tower is located higher than the hot water pack, the water flows out of the chilled water tower through the charcoal furnace to the hot water bale, and when the water flows through the charcoal furnace, it is heated into hot water.

For safety reasons, Gaoyi has installed pressure reducing valves for all cold water towers and hot water packs, which will exhaust as long as the pressure exceeds one atmosphere. This is mainly designed to avoid human error, for example, the boiler burner may forget to turn off the fire, boil the water and continue to heat, and if there is no place to relieve the pressure, it will cause an accident.

As for the safety of the boiler itself, there is nothing to worry about, Gao Yi originally chose a straight tube boiler with a high safety factor, rather than a bent tube boiler with higher thermal efficiency, but it is more likely to block the water pipe due to scale. What's more, whether it is a straight-tube boiler or a bent-tube boiler, even if there is an explosion, it is the water pipe that is blown up, and there is a thick layer of charcoal furnace shell outside to provide protection.

The boiler will be boiled by the only male guy named Lin Sheng in Yaxian Ju every morning, and when Gao Yi gets up at eight o'clock to take a bath, the water temperature just drops to the most suitable forty degrees, and he doesn't even need to add cold water, just turn on the hot water faucet and wash it directly. Lin Sheng will come up again every day after dinner to prepare bath water for Gao Yi at night.

At other times, Gao Yi wants to take a bath, he does it himself, just light the fire in the stove, and then manage the two valves. His hot water packet is 100 litres, and it only takes a quarter of an hour to boil this 100 litres. It can be seen that burning boilers is not a troublesome matter, but how to transport the coal used for fire. It is definitely not possible to walk the stairs inside the house, the stairs are narrow and winding, and the coal is easy to fall into debris, and it will take half a day to clean the coal dust on the ground once you walk through it.

Therefore, whenever it is time to transport coal, Lin Sheng will use a wooden ladder to set up directly on the drying platform, and then climb the ladder to carry the coal up. In addition to coal, other heavy objects such as pear paste sugar are also handled. For this reason, Gao Yi now subsidizes Lin Sheng's two Jiao Xiaoyang every day, and six yuan a month, which is three times the official salary he received from the boss's wife.

After a few days, Gao Yi is ready to install a pulley block on the utility pole that hangs sandbags, so that it is convenient to lift heavy objects from the low. After all, Lin Sheng only serves him now, and he can be regarded as a member of his subordinates, and he should take care of the places that can be taken care of.

After taking a shower, Gao Yi likes to stand under the dormer window to wipe his body, from here he can just see Ah Jin's busy figure and the foggy machine next to her.

Gao Yi originally designed this machine to automatically divide ten catties of nacodine into 500,000 servings according to about 10 milligrams.

The reason why we have to divide Nakedine into 500,000 parts, and then make 500,000 pieces of pear paste candy piece by piece, instead of dividing it into 1 gram each, a total of 5,000 parts, and then it is convenient to make 5,000 bottles of cough potions such as Chuanbei loquat ointment, is because it is not clear whether Nakedine will precipitate and precipitate in these potions. In the event that Nacodine is precipitated, it is likely that the whole bottle of cough medicine will not have any cough suppressant effect, and the person will be killed by the last sip.

As for weighing 10 kilograms of pear paste sugar, then sprinkling 10 grams of nacodics like pepper noodles, and then stir-frying, stir-stirring, and stirring, the easy way to start the pot is a minute of death.

However, to design a machine that automatically divides narcodine into 10 milligrams per serving in solid form, Gao Yi asked himself that with his mechanical design ability at the level of a high school student, he would never be able to accomplish this task. So, it was natural for him to dissolve the nacodine in some kind of solvent, such as alcohol, and then use the Venturi effect to divide the solution into aliquots, and then evaporate the solvent to obtain an aliquot of the nacodine solid.

The so-called Venturi effect refers to the low pressure generated by a fluid flowing at high speeds, resulting in a pressure difference with the surrounding environment, resulting in adsorption. Theoretically, under the condition that other conditions remain unchanged, the velocity of the fluid is constant, the fluid pressure is constant, and the pressure difference is certain, and the adsorption force generated is also certain, and if the adsorbed liquid is a liquid, the amount of liquid adsorbed is certain.

That is to say, theoretically, as long as the velocity of the high-speed fluid is maintained, the amount of liquid it adsorbs per unit time is also constant, which is the theoretical basis for the design of the whole system.

Therefore, the key to this system is how to obtain a high-speed fluid with stable velocity.

Gao Yi's idea is to output a stable high pressure through a boiler to form a stable pressure difference, and under other conditions, there will be a fluid with a stable velocity between the stable pressure differences.

As for how to generate a stable high pressure, Gao Yi designed it this way, he sealed one end of a tube and loaded it with a heavy load, so that the whole tube could provide five atmospheres of pressure, and then made a hole in the side of the tube. This tube is attached to the boiler as the spool of the pressure valve. The pressure valve of the boiler is also tubular and is closed with the valve core by a scavenging ring structure, such as that on the piston of an internal combustion engine. There is a hole on the outer wall of the pressure valve to connect a horizontal pipe, and a slot is opened above the hole to the top of the pressure valve, and this slot is connected to a flat pipe that contains the whole groove, and the other end of the flat pipe is flared.

When the pressure in the boiler exceeds five atmospheres, the tubular core of the pressure valve rises, and when the hole groove on the tube is connected with the opening of the transverse tube, a constant pressure difference of four atmospheres will be formed inside the transverse tube, and the steam in the boiler will enter the transverse tube, and then enter the venturi tube to absorb a fixed amount of nacobutine alcohol solution, and finally eject from the nozzle. When the atmospheric pressure in the boiler continues to rise, the tubular valve core will continue to rise, the transverse pipe will be closed, and the pressure difference in the transverse pipe will return to zero, and there will be no more air flow. At this time, the orifice groove of the tubular valve will be connected with the flat pipe above the transverse tube, and the boiler will exhaust to the outside through the valve core, orifice, flat tube and bell mouth. The boiler pressure drops, the tubular valve falls, and then the boiler pressure rises again, and a new cycle begins.

In addition to absorbing Nacotin, the steam entering the transverse tube can also divert a part of the driving mechanism to complete the step control of the sugar tray holder. The mechanical design of this part is relatively simple, buy a ready-made typewriter and come back and take it apart to see it. Gao Yi did exactly that, he dismantled a typewriter, then enlarged the size of the parts, and found a watch shop for them to make a set out of brass. He only designed an additional toggle mechanical timer, which was to ensure that the venturi sprayed the solution of the nacobutine solution before the tray was stepped.

The real problem faced by Gao Yi is that the amount of liquid drawn from the glass bottle at a time is always not constant within the margin of error. The margin of error he gives is already very wide, and the ratio of the maximum and minimum values to the standard value can be three times different, that is, if the standard value is 10, then the maximum value can be 30, and the minimum value can be 3. The difference between the maximum and minimum values is tenfold, and yet this level of error is not possible with this machine in the first place.

Later, Gao Yi carefully analyzed the reason, and found that the tubular valve stayed in front of the horizontal pipe for a different time each time, so although the air pressure is constant, the amount of liquid adsorbed per unit time is unchanged, but the length of the unit time is changing, so the total amount of liquid pumped each time must not be equal.

Gao Yi's response was to make a tubular piston in the transverse tube, and there was a groove on the side of the piston. When there is a pressure difference in the transverse pipe, the piston will be driven forward, and when the front end of the groove on the side of the piston is connected with the pipe leading to the venturi, the air flow will enter the venturi through this groove, and the piston will continue to move forward, and when the rear end of the groove passes through the opening of the venturi pipe, the pipe will be closed, and no more air will enter even if there is a pressure difference. Therefore, theoretically, the total flow into the venturi will not change, and the amount of liquid drawn will not change, as the length of the tank will not change, the pipe cross-section will not change, and the pressure will be constant.

However, because steam is a very unfriendly working gas, with intense changes and turbulence, the effect is still not satisfactory, but at least it is not as exaggerated as 3 to 30, and it is roughly maintained at the level of 6 to 12.

Gao Yi regretted that in fact, his original design was to have a steam engine drive a variable capacity extractor, and then connect the venturi tube through this extractor to provide stable air pressure. But then I wanted to build an extra extractor, which was too time-consuming, so I gave up. Now it seems that it has not saved much time, and the effect is really not good, so it can only be said that it will be used.