Today we are talking about a type of mattress. It is a water mattress. The water mattress is one of the mattresses. As its name implies, it is filled with water inside the mattress and then fixed with a bed frame. The multifunctional water mattress can also heat the water temperature by electricity, and has a massage effect. In the past two years, it was reported that an undergraduate student was cooling his own school water mattress . How did the self-made water mattress work? Is there any safety hazard? Let's open our brain hole together and be a Technical house, enjoy homemade cool in this summer vacation!
Water mattress
The water mattress is a kind of mattress. The main structure is a water bag filled with water in the bed frame. After the electricity is turned on, it can satisfy the consumers to maintain their desired temperature. What is more worth mentioning is that the water mattress has a certain massage effect, using the buoyancy principle, there are buoyancy sleep, dynamic sleep, Dongnuanxialiang, hyperthermia effects. In addition, the water mattress is also closely following the pace of the times in the constant innovation and change, and strive to create a product that consumers are satisfied with. In short, the water mattress, practical appearance, fashion generous, allowing you to experience a different home life, it is worth your own!
Water mattress type
The variety of water mattresses is different. According to different classification methods, there will be different types of water mattresses. First of all, the water mattress can be divided into rectangular, circular and U-shaped according to the appearance of the product. Secondly, water mattresses are divided into sizes: 110*200*20cm (single) and 180*200*20cm (double) water mattresses. Finally, the water mattress is divided according to the pattern of the surface, and can be divided into small waves, medium waves, large waves and so on. Different types of water mattresses have different characteristics. As a result, consumers have a relatively large choice of water mattresses. Consumers can purchase water mattresses according to their personal preferences and specific room decoration conditions. .
Water mattress price
South Korea water cycle noise-free temperature control water mattress 1.5*2.0m price of 1800 yuan / Zhang 1.8*2.0m price of 2080 yuan / Zhang
This price is a relatively low price. The price of water mattresses is generally higher than ordinary mattresses.
Example: Shu Man brand water mattress 180*200 Price is about 10988 yuan / piece (but this is equipped with mattresses, bed frames + bedside cabinets and bedding sets of six) and the bed head is still the first layer of yellow leather
Confott's round water mattress, the price of 6800-7800 yuan / Zhang.
Zumma company's water mattress prices in: 6409-8499 yuan / Zhang
The price of water mattresses in other markets is around 5,000 yuan per sheet.
Note: This price is for reference only! Due to geographical differences, of course, the price will be different. For more details on the prices, please refer to the local distributors!
Water mattress advantages
1. Durable, water mattresses are generally made of pressure-resistant and squeezable materials, so even if the inside is filled with water, it is very durable.
2. Sterilization In addition to phlegm, there is a saying called "No wash in March, two million locusts to accompany you to sleep." However, the water mattress is a mattress filled with water and has the function of adjusting the water temperature, so it can To a certain extent, we must eliminate germs.
3. It is warm in winter and cool in summer because it has the function of regulating water temperature.
4. The effect of hyperthermia, some people use it to adjust the water temperature function, to achieve this type of effect of heat, the effect has been proven to exist.
5. Energy saving
Disadvantages of water mattresses
The price of the water mattress is relatively high, and it is not easy to move without using the mattress, and it is necessary to change the water and add water. This process requires a certain amount of time.
Water mattress impact on human body
Because the interior of the water mattress is filled with water, it has a certain degree of softness. When we lie flat, it will have a certain degree of depression and can not carry our bones. In the long term, it will cause the bones to bend and deform, especially It is child who is growing body. Water mattresses are suitable for a certain degree of leisure and rest. A brief rest on the water mattress will make us feel comfortable, but it can not be used as a long-term sleep tool, which will affect the quality of our sleep and will feel back when we wake up. Aching, weak limbs. However, the quality of different mattresses is not the same, and the damage to the human body is not the same. The high-quality materials will benefit our quality of sleep.
How to make a water mattress
In order to provide a good power for water circulation operation, we must prepare a small water pump, which is generally available on the market at 12V. At the same time, aluminum pipes are laid under the mattress. In order to maximally cool the mattress, the pipeline generally goes back and forth. Type, this will ensure the maximum contact area between the mattress and the pipe. At this time, the pipeline can be connected with the pump and the other end is connected with the water basin, and the ice can be used to cool the water in the basin.
This kind of simple water mattress still has many deficiencies, but it can already cool down successfully, but the maintenance time is not long enough. And we can improve the ice in the basin into a simple circuit cooling module, and use the semiconductor refrigeration chip to drive the circuit water to refrigerate. Because the cooling plate is also releasing heat during the energization of the circuit, separate the cooling module from the cooling module. In fact, the principle is even more complicated. Two water circulation systems have been formed. They have a clear division of labor and do not interfere with each other. However, there is still exchange of water, or only a water basin is added, and hot water is introduced into another basin to cool down. However, in a plastic pipe, it does not enter the basin where the cooling plate is placed, and after cooling, it enters another basin, that is, a basin that is connected to the pump. Although this student's design ends here, it has attracted more attention from technical houses. It was suggested that the use of two pieces of semiconductor cooling can achieve better rapid cooling, and it is more convenient and quick. All kinds of DIY methods for producing summer heat can be described as great gods in the people.
Editing Summary: Through the above introduction, we must have a certain understanding of the method of self-made water mattress, but if you want to try, I hope everyone can have a certain amount of electricity and access to electricity, common sense, after all, water conductivity If it is not handled properly, it may be dangerous. Perhaps this is exactly what tells us that technology changes lives, and technology changes the world.
Hotel Mattress Flower Mattress Mattress Massage Mattress Gold Kerr Mattress
Elevator modernization (or lift modernisation) is the process of upgrading the critical parts of the elevator in order for it to be able to handle new technology, have better performance, improve safety, and even give the aesthetics an up-to-date appeal
Most elevators are built to provide about 20 years of service, as long as service intervals specified and periodic maintenance/inspections by the manufacturer are followed. As the elevator ages and equipment become increasingly difficult to find or replace, along with code changes and deteriorating ride performance, a complete overhaul of the elevator may be suggested to the building owners.
A typical modernization consists of controller equipment, electrical wiring and buttons, position indicators and direction arrows, hoist machines and motors (including door operators), and sometimes door hanger tracks. Rarely are car slings, rails, or other heavy structures changed. The cost of an elevator modernization can range greatly depending on which type of equipment is to be installed.
Modernization can greatly improve operational reliability by replacing mechanical relays and contacts with solid-state electronics. Ride quality can be improved by replacing motor-generator-based drive designs with Variable-Voltage, Variable Frequency (VVVF) drives, providing near-seamless acceleration and deceleration. Passenger safety is also improved by updating systems and equipment to conform to current codes.
Components needs to be replaced in different elevator modernization plan
| Component | Scheme of elevator modernization plan | |||
|---|---|---|---|---|
| Refurbishment work | Partial modernization | Full modernization | Full replacement | |
| Elevator car | ||||
| Sling | No | No | by building owners | Yes |
| Door operator | No | by building owners | Yes | Yes |
| Cab design | by building owners | by building owners | Yes | Yes |
| Car doors | by building owners | by building owners | Yes | Yes |
| Car fixtures | Yes | by building owners | Yes | Yes |
| Wedges connected to the governor | No | No | Yes | Yes |
| Additional phone/intercom if they don't equipped | by building owners | Yes | Yes | Yes |
| Traveling cable | No | Yes | Yes | Yes |
| Hydraulic rams | No | No | No | Yes |
| Wire ropes | No | by building owners | Yes | Yes |
| Shaft | ||||
| Counterweight | No | No | No | Yes |
| Guide rails | No | No | No | Yes |
| Buffers | No | No | Yes | Yes |
| Electrical components | No | No | No | Yes |
| Tapehead | No | Yes | Yes | Yes |
| Limit switches | No | Yes | Yes | Yes |
| Wiring | No | Yes | Yes | Yes |
| Compensations | No | No | No | Yes |
| Lobby | ||||
| Shaft door components | by building owners | by building owners | Yes | Yes |
| Shaft doors | by building owners | by building owners | by building owners | Yes |
| Hall fixtures | Yes | by building owners | Yes | Yes |
| Machine room | ||||
| Machines | No | by building owners | Yes | Yes |
| Controllers | No | Yes | Yes | Yes |
| Removal of the selector | by building owners | Yes | Yes | Yes |
| Overspeed governor | No | No | Yes | Yes |
| Additional unintended car movement protection device if they don't equipped | by building owners | by elevator safety code in countries | ||
| Backup battery or uninterruptible power supply | No | Yes | Yes | Yes |
Benefits of elevator modernization
Modernization can greatly improve operational reliability by replacing mechanical relays and contacts with solid-state electronics. Ride quality can be improved by replacing motor-generator-based drive designs with Variable-Voltage, Variable Frequency (VVVF) drives, providing near-seamless acceleration and deceleration. Passenger safety is also improved by updating systems and equipment (such as double brake system, unintended car movement protection device on the brake system etc.) to conform to current codes.
With CEP traction elevator modernization, we use the existing elevator structure while upgrading the ride quality and reliability with state-of-the-art components. Upgrade to a CEP closed loop door operator or a sophisticated, energy saving VVVF inverter.
CEP traction elevator modernization can include:
- CEP Microprocessor Based Control System
- CEP Microprocessor Based Efficient Dispatch System
- Energy Efficient AC Drives or SCR Drives on Existing AC Gearless Machines
- Traction Machines (Geared / Gearless)
- Rope Brake System
- CEP Closed Loop Door Operating System
- Car & Hall Pushbutton Fixtures & Indicators
- Car & Counterweight Roller Guides
- Seismic Upgrades
- Security Upgrades
- Cab Interior Renovations or Cab Replacement
NOTE: Complete tear-out modernizations are available.
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