One is to generate heat through chemical reaction, which is the type of heating on the market. The temperature of heat generated by the contact of internal chemicals is about 40℃.
The other is to use the function of lithium battery, the internal heating chip heats up, and the USB interface charges and discharges, similar to the mouse pad of hand warmer. Because of the function of lithium battery, it can also be used as a mobile power supply.
Small size, easy to carry, the temperature can reach about 50℃.
Heating principle At a certain temperature, the solubility of (solute) in solvent is constant. For example, the solubility of salt (sodium chloride) in water at room temperature is 36g/ 100mL.
A solution is said to be saturated when its concentration is equal to its solubility, and supersaturated when its solubility is higher than its solubility.
The liquid in the warm handbag is a supersaturated solution of sodium acetate (CH3COONa).
Because the concentration of supersaturated solution is too high, it is unstable.
When a metal is twisted, a slight vibration is enough to crystallize the solute and turn it into a relatively stable solid.
However, this process is exothermic, so the warm handbag begins to heat up.
There is a Maltese Sea in the Mediterranean Sea in Provence, France, which is rich in sea salt. In addition to sodium chloride, sea salt here also contains dozens of minerals needed by human body, such as iron, calcium, magnesium, potassium, zinc, gallium and silicon.
Since ancient times, local residents like to bathe in the ocean and enjoy the ocean spa, which can not only eliminate fatigue and relax nerves, but also effectively detoxify and beautify the skin.
Today, Camara Ocean still attracts millions of tourists to swim here and enjoy the ocean spa every year, from which the world-famous Camara sea salt comes.
In 2004, French BLB company organized employees to spend their holidays in the Sea of Malta and enjoy the ocean spa. When staying in the hotel at night, a female employee developed habitual abdominal pain. The hotel waiter gave the employee a hot water bottle to press her abdomen. After about half an hour, the staff felt much more comfortable and asked the waiter what water was in the hot water bottle. The waiter replied that the bag contained seawater from the nearby Maltese Sea, and said that local residents like to heat the seawater and inject it when they have low back pain.
After coming back from vacation, BLB made employees think at a regular meeting of the company and asked them to look for new business opportunities in this incident.
But local residents use hot water bottles filled with water, which are heated and then injected into the bags. It is ok to use them near the ocean, but how can residents who are far away from the ocean use them? As Malta Ocean and its nearby Mediterranean coast are tourist areas, no other factories are allowed to be built except saltworks, and electric heating bags must be located far away.
An employee had a whim. After refining the sea salt from Kamahl Tower, it was injected into a rechargeable electric heating bag, which could be heated without changing water, which greatly facilitated the use of foreign consumers and could be produced anywhere.
Features 1. Lithium battery is used to supply energy, which has large capacity and is more environmentally friendly. It can be recycled, charged for 3-4 hours and kept at room temperature for 6-7 hours (the specific time is determined according to different models).
2. The latest ceramic heater is used inside, which is healthy, conducts heat through infrared rays, promotes blood circulation, accelerates metabolism, improves immunity, and has no electromagnetic radiation. It is an ideal product for relieving pain, protecting health and keeping warm in winter, such as arthritis, scapulohumeral periarthritis, lumbago and leg pain, rheumatism and rheumatoid, chills and discomfort, chills in limbs and cold pain in wounds.
3. Small and lovely appearance and elegant packaging are good gifts for friends, relatives and couples.
4. With USB reverse charging function, it can charge all kinds of digital products, which is suitable for home life, work and going out.
The advantage of use is that it can be recycled.
As long as the warm handbag is heated in boiling water for about 10 minute, the condensed solute will dissolve again.
This is because the solubility of solute increases at high temperature.
In the process of dissolution, the solute undergoes endothermic reaction and becomes supersaturated solution again.
Unique hyperthermia function, can warm hands, feet and quilts, and can relieve pain caused by toothache, arthritis and overwork, such as neck, waist and shoulder fatigue; 4, beautiful appearance, fast charging, suitable for home life, work, going out, internal use of efficient heating agent, high temperature resistance, lasting insulation.
Hand warmers for winter heating: this product can be used to warm hands, feet, neck, body and quilt in winter; Health care and auxiliary treatment: this product can eliminate fatigue and relieve backache, and has obvious relieving effect on abdominal pain, arthritis pain, scapulohumeral periarthritis and sciatica.
Electric heating treasure classification Electric heating treasure products include electric baking pans and electric hot water bottles.
According to the heating principle of electric hot water bottle, there are two types: electrode type and electric heating element type.
1. solid electric baking pan filled with thermal insulation cotton (such as; The working principle of asbestos, etc. Yes: adopt double temperature control electric energy storage structure to gradually release heat energy. Equipped with automatic overheating protection device and automatic heat preservation indication device, as well as a small electric furnace controlled by PTC thermistor switch. PTC is a thermistor with positive temperature coefficient, which will generate heat by itself when current passes through it (the heat of electric furnace will also be transferred to it). When the temperature reaches a certain value, its resistance will increase sharply, which can be regarded as disconnection, so Rebao stops consuming electric energy at this time.
2. Soft liquid electrothermal treasure uses new technology to store energy and heat up quickly.
One-time water injection, permanent use, unique explosion-proof non-ironing device, temperature control protection; Long service life; Long-lasting heat preservation and the like.
The working principle is improved on the basis of solid electric cake, adopting electrode heating mode, high quality temperature control and thermal fuse double temperature control insurance.
Under normal circumstances, when the temperature of the liquid in the bag reaches 65 degrees, the thermostat will automatically cut off the circuit and stop heating; Once the thermostat control fails, the thermal fuse cuts off the power supply and stops heating, so it needs to be replaced with a new product. Please don't try to repair it.
Product specifications: hot water bottle: plum blossom type: diameter 23CM net weight: 1.0kg hexagon type: diameter 23CM net weight: 1.0kg pillow type: length 28.5CM wide 19.5CM net weight: 1.5kg heart type: length 23.5cm. 5CM net weight: 1.8kg warm belt: 35.5CM long and 20.5CM wide net weight: 1.4kg hand warmers: heart-shaped.
Shape: 767620mm
Net weight: 60g water drop shape: 856220mm
Net weight: 60g oval: 856220mm
Net weight: 60g homemade 1
Put175g of sodium acetate (CH3COONa) into a beaker containing 50ml of water: 2.
Dissolve the sodium acetate in the beaker with a hot basin; three
Pour the solution into a fresh-keeping bag and add a twisted metal electrothermal treasure. It is a new heating product which can store heat, with reasonable structural characteristics, convenient use and maintenance, large heat storage and long heat preservation time. It is an ideal product for warming hands and feet in winter.
With the improvement of people's living standards, electric heating treasure has become a necessity for families. After all, it can be used for heating, physical therapy and hot compress. Because it was inconvenient to carry in iron surgery in the past, water storage electric heating treasure appeared. The material is soft or velvet, soft, does not contain any chemical heating agent, has no odor, and has higher thermal efficiency. There are many domestic production enterprises. In northern cities, electric heating treasure has become another necessary daily necessities besides mobile phones in cold weather. Warm reminder, this product adopts double temperature control, which is more efficient and safe. The plug adopts 3C certified patent plug, with automatic early warning power-off device, so that you can avoid worries and use computer to automatically layering, which can prevent leakage more effectively! Product features: 1, made of high-grade plastic cloth and heat-sealed by a special process, using an efficient heater to evenly heat the special liquid semiconductor in the bag, which is efficient and warm, and the outer fabric feels comfortable; 2. Full-automatic temperature control and high-temperature protection ensure safety performance, unique vacuum liquid injection process, automatic power off when the charging temperature reaches 65-75 degrees, which is safe and reliable; 3. Unique hyperthermia function, which can warm hands, feet and quilts, and relieve the pain of neck, waist and shoulder joint fatigue caused by toothache, arthritis and overwork; 4. Beautiful appearance, fast charging, suitable for living at home, working and going out. The interior adopts high-efficiency heating agent, which can keep warm at high temperature for a long time. The set temperature can be reached after charging for 8- 18 minutes, and the heat preservation lasts for 2- 10 hour; 5. The special liquid injection process is one-time permanent, safe and convenient; Instructions for use: 1. When the power is turned on, the indicator light will light up and the warm bag will start to work. When the temperature reaches the set value, the light will go out. It can also be charged according to the temperature required by the individual; 2. Please disconnect the power supply after charging. Do not connect the electric heating bag to the power cord for a long time, and unplug the power cord from the power socket. 3. Please wait while charging to avoid accidents due to long charging time.