CN201290513Y - Incubation water heating carpet - Google Patents

Abstract

The utility model relates to a constant temperature hydrothermal blanket, comprising a soft blanket and an insulating water tank. The constant temperature hydrothermal blanket is characterized by also comprising a rubber flow pipe, a micro submerged pump, a multifunctional switch, a high critical temperature PTC resistor, a low critical temperature PTC resistor and an electric heater; the rubber flow pipe is arranged in an interlayer of the soft blanket in a snaking mode; a water outlet of the rubber flow pipe is communicated with the insulating water tank; a water inlet of the rubber flow pipe is connected with a water outlet of the micro submerged pump of the insulating water tank so as to form a water flow circulating system; the insulating water tank is internally provided with the electric heater and is respectively connected with the high critical temperature PTC thermo-sensitive resistor, a low critical temperature PTC thermo-sensitive resistor in series by the multifunctional switch so as to form a high-temperature heating circuit and a low-temperature circuit. The constant temperature hydrothermal blanket has simple and compact structure, stable temperature control and safe and convenient use and is an ideal water heating blanket.

Description

Constant temperature water heating blanket

technical field

The utility model relates to a daily article for heating and keeping warm, in particular to a water heating blanket.

Background technique

Due to the limitation of energy and existing living conditions, people sleep and heat in winter and basically adopt heating devices such as air conditioners, hot water bags and electric blankets. The cost of living is too high when using air conditioners; the hot water bag not only concentrates heat but also has a short duration of heat preservation, it is difficult to meet the comfort requirements; ordinary electric blankets generate strong electromagnetic radiation and induction electricity while heating, and long-term use seriously damages the human body Healthy, and can cause a variety of diseases, improper use can easily cause fires, the elderly, weak, sick, disabled and pregnant should not use electric blankets. Although some electric blankets and water-heated blankets without electromagnetic wave radiation are present, they are not easy to popularize due to complex structure, inconvenient operation and high cost.

Contents of the invention

The utility model is to provide a constant temperature water heating blanket, which not only can be selected from high temperature and low temperature, but also has stable temperature control, simple structure, low cost, and safe and convenient use.

In order to achieve the above object, the utility model adopts the following technical solutions:

A constant temperature water heating blanket, including a flexible blanket body and an insulated water tank, is characterized in that it also includes a rubber flow pipe, a miniature submersible pump, a multifunctional switch, a high critical temperature PTC resistor, a low critical temperature PTC resistor, and an electric heater; flexible In the middle of the interlayer of the blanket body, rubber flow pipes are arranged in a serpentine shape. The outlet of the rubber flow pipes is connected to the heat preservation water tank. The heater is connected in series with high and low critical temperature PTC thermistors respectively through a multi-function switch to form a high and low temperature heating circuit.

The top of the heat preservation water tank is provided with a water injection port and an exhaust hole, and a liquid level indicator is installed on the outer wall.

The beneficial effects of the utility model are: after adopting the above-mentioned temperature control circuit, the micro-submersible pump is turned on through the multi-functional switch to circulate the water flow, and the required temperature file is selected, and the series circuit of the PTC thermistor and the electric heater is connected, and the current After passing through the electric heater, the water temperature in the heat preservation water tank rises. When the water temperature exceeds the critical temperature (Curie temperature) of the PTC thermistor, the resistance of the PTC thermistor increases rapidly in a stepwise manner, causing the current in the circuit to drop, making the The temperature of the water in the heat preservation water tank is lowered. When the water temperature drops, the resistance value of the PTC thermistor decreases again, the loop current increases, and the temperature of the electric heater rises again, repeating the cycle, so that the water temperature in the thermal insulation water tank is kept within the temperature range around the critical temperature of the PTC thermistor, realizing temperature stabilization control.

The utility model has the advantages of simple structure, low cost, safety and comfort, suitable and stable temperature, and is convenient for use by the elderly, weak, sick, disabled and pregnant, meets the requirements of life comfort, and is an ideal water heating blanket.

Description of drawings

Fig. 1 is the structural representation of the constant temperature water heating blanket of the present utility model;

Fig. 2 is a schematic diagram of the heating temperature control circuit of the constant temperature water heating blanket of the present invention;

Fig. 3 is a schematic diagram of different positions of the new constant temperature water heating blanket switch used in the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1: the constant temperature water heating blanket of the utility model includes a flexible blanket body 1, a rubber flow pipe 2, an insulated water tank 3, a miniature submersible pump 4, a multifunctional switch 5, a power plug 6, a high critical temperature PTC resistor 7, Low critical temperature PTC resistor 8, electric heater 9, rubber water pipe water inlet 10, rubber water pipe water outlet 11, liquid level indicator 12, water injection port 13, air vent 14.

The heat preservation water tank 3 is provided with a miniature submersible pump 4, an electric heater 9, a high critical temperature PTC thermistor 7, a low critical temperature PTC thermistor 8, and the heat preservation water tank 3 is provided with a water injection port 13 and an air vent 14, and the outer wall A liquid level indicator 12 is provided.

The rubber water pipe 2 is arranged in a serpentine shape in the flexible blanket body 1, the rubber water pipe outlet 11 communicates with the heat preservation water tank 3, and the rubber water pipe water inlet 10 is connected with the water outlet of the miniature submersible pump 4 to form a water circulation system. The multi-function switch 5 is provided with the opening and closing of the miniature submersible pump 4 and the high and low selection functions of the water temperature, and is connected with the miniature submersible pump 4, the electric heater 9 and the high and low critical temperature PTC thermistors 7 and 8 respectively through several wires. The micro submersible pump working circuit and the high and low temperature heating circuit are formed in series.

As shown in Figure 2, the heating temperature control circuit is shown, and its working process is as follows:

When the user needs a higher temperature, insert the power plug 6 into the 220V AC power outlet, and push the multi-function switch to the position shown in Figure 3 (a), and connect the high-temperature heating circuit. At this time, the micro submersible pump 4 starts Work, the water in the thermal insulation water tank 3 circulates through the water circulation loop, and the current flows through the electric heater 9 at the same time. Since the water temperature in the thermal insulation water tank 3 is lower than the critical temperature of the high critical temperature PTC thermistor at the beginning, the current in the loop is relatively large , the water temperature in the heat preservation water tank 3 begins to rise, when the water temperature exceeds the critical temperature of the high critical temperature PTC thermistor 7 by 32°C, the resistance value of the high critical temperature PTC thermistor 7 increases rapidly in a stepwise manner, and the current in the circuit drops , so that the water temperature in the insulation water tank 3 is reduced. After the water temperature decreased, the resistance value of the high critical temperature PTC thermistor 7 became smaller again, and the electric heater 9 electric current flowed through the circuit increased, and the water temperature in the thermal insulation water tank 3 rose again, and the cycle went round and round, so that the water temperature in the thermal insulation water tank 3 remained constant. It is kept within the temperature range of the critical temperature of the high critical temperature PTC thermistor around 32°C, realizing high temperature and constant temperature heating.

When the user needs a lower temperature, insert the power plug 6 into the 220V AC power outlet, and push the multi-function switch to the position shown in Figure 3 (b), and then turn on the low temperature heating circuit, the same principle can Realize low temperature and constant temperature heating.

When there is no need for heating but only water flow, the multi-function switch is pushed to the position shown in Figure 3 (c), at this moment only the micro submersible pump makes the water flow continuously circulate without heating.

When not in use, the multi-function switch can be pushed to the position shown in Figure 3 (d).

In addition, when using for the first time or after using for a period of time, the water level in the thermal insulation water tank 3 can be observed through the liquid level display 12, and when the water level drops to a certain level, water can be added through the water injection port 13.

During heating, a certain amount of gas produced in the thermal water tank 3 can be discharged through the exhaust hole 14.

Studies have shown that the most suitable bed temperature for falling asleep is around 26-34°C. The utility model selects high and low critical temperature PTC thermistors whose critical temperatures are 32°C and 25°C respectively.

Claims (2)

1. a constant temperature hydrothermal blanket comprises flexible blanket body (1), and attemperater (3) is characterized in that, also comprise rubber overflow pipe (2), miniature immersible pump (4), multifunction switch (5), high-critical temperature PTC resistance (7), low critical-temperature PTC resistance (8), electric heater (9); The snakelike rubber overflow pipe (2) that is arranged with in the middle of the interlayer of described flexible blanket body (1), rubber overflow pipe delivery port (11) communicates with attemperater (3), miniature immersible pump (9) delivery port in rubber overflow pipe (2) water inlet (10) and the attemperater (3) is connected, the composition water circulation system; Electric heater (9) is housed in the described attemperater (3), also is connected into the high and low temperature heating circuit with high and low critical-temperature PTC thermistor (7,8) respectively by multifunction switch (5).

2. the hot blanket of constant temperature according to claim 1 is characterized in that, described attemperater (3) is provided with water filling port (13), steam vent (14) and liquid level display (12).

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