阅读说明：本技术 一种稳定加热的线性升温水浴器及其控制方法 (Stable-heating linear temperature-rising water bath device and control method thereof ) 是由 邓春长 于 2021-09-16 设计创作，主要内容包括：本申请涉及一种稳定加热的线性升温水浴器及其控制方法,一种稳定加热的线性升温水浴器包括箱体和加热棒,还包括底板、连接器、连接线、显示器和夹持器。箱体为热水壶,热水壶上端开有开口,加热棒包括第一温度检测计、第一液位检测计,热水壶活动连接在底板上,加热棒一端设置在热水壶内部,另一端与连接器一端连接,连接器另一端设置连接线,连接线另一端与显示器连接,夹持器固定设置在底板一侧,显示器内部设置控制器,加热棒通过连接线与控制器电性连接。本申请的一种稳定加热的线性升温水浴器,由控制器依据设定温度和设定加热时间自动控制线性加热升温,可以自动补偿高温和低温浮动,控制精确度高,成本低。(The application relates to a stably-heated linear temperature-rising water bath and a control method thereof. The box is the thermos, and open the thermos upper end has the opening, and the heating rod includes first temperature detection meter, a level detection meter, and thermos swing joint is on the bottom plate, and heating rod one end sets up inside the thermos, and the other end is connected with connector one end, and the connector other end sets up the connecting wire, and the connecting wire other end is connected with the display, and the holder is fixed to be set up in bottom plate one side, the inside controller that sets up of display, and the heating rod passes through connecting wire and controller electric connection. The utility model provides a linear intensification water bath of steady heating, by the controller according to setting for the temperature and set for the heating time automatic control linear heating intensification, can the automatic compensation high temperature and the low temperature float, control accuracy is high, and is with low costs.)

1. The utility model provides a linear intensification water bath of steady heating, includes box and heating rod (1), its characterized in that: the linear temperature-raising water bath device capable of stably heating also comprises a bottom plate (2), a connector (3), a connecting wire (4), a display (5) and a clamp holder (6), the box body is a thermos, an opening is arranged at the upper end of the thermos, the heating rod (1) comprises a first temperature detector and a first liquid level detector, the hot water kettle is movably connected to the bottom plate (2), one end of the heating rod (1) penetrates through the opening and is arranged in the hot water kettle, the other end of the heating rod stretches out of the hot water kettle and is connected with one end of the connector (3), the other end of the connector (3) is provided with a connecting wire (4), the connecting wire (4) is connected with the display (5), the clamp holder (6) is fixedly arranged on one side of the bottom plate (2) and is relatively fixed with the position of the thermos, the display (5) is internally provided with a controller, and the heating rod (1) is electrically connected with the controller through a connecting wire (4).

2. A steadily heating, linear, elevated temperature water bath as defined in claim 1, wherein: the hot water kettle comprises a kettle body (701), a kettle body handle (702), a signal wire, a water outlet (703), a water storage area (704), a second temperature detector, a second liquid level detector, a heat insulation layer (705), a one-way valve (706) and a heat dissipation layer (707), wherein the kettle body (701) is arranged on a bottom plate (2), the kettle body handle (702) is arranged on the side edge of the kettle body (701), the signal wire penetrates through the upper end of the kettle body handle (702) and is connected with a connector (3), the water storage area (704) is arranged on one side of the kettle body (701), the water outlet (703) is communicated with the kettle body (701) and is arranged at the upper end of the water storage area (704), the heat insulation layer (705) is arranged between the water storage area (704) and the kettle body (701), the heat dissipation layer (707) is arranged on the non-contact part of the water storage area (704) and the kettle body (701), the one-way valve (706) is arranged at the bottom of one side, close to the water storage area (704), and communicated with the kettle body (701), the second temperature detection meter and the second liquid level detection meter are arranged in the water storage area (704), the second temperature detection meter, the second liquid level detection meter and the one-way valve (706) are electrically connected with the signal line, the second temperature detection meter and the second liquid level detection meter transmit signals to the controller, and the one-way valve (706) is controlled by the controller.

3. A steadily heating, linear, elevated temperature water bath as defined in claim 2, wherein: the display (5) comprises a plug, an interface, a timer, a temperature adjusting button, a switch button and a timing button, the connecting wire (4) is connected with the display (5) through the interface, and the connecting wire (4), the timer, the temperature adjusting button and the timing button are electrically connected with the controller.

4. A steadily heating, linear, elevated temperature water bath as defined in claim 2, wherein: the water kettle is characterized in that the bottom plate (2) is a cuboid thin plate, threaded holes are formed in one side of the bottom plate in a penetrating mode, a plurality of grooves are symmetrically formed in the middle of the bottom plate, a plurality of water caltrops with the same number as the grooves are symmetrically formed in the lower surface of the kettle body (701), and the water caltrops correspond to the grooves one to one.

5. A steadily heating, linear, elevated temperature water bath as defined in claim 1, wherein: heating rod (1) lower extreme sets up agitating unit, agitating unit includes connecting axle and flabellum (101), and flabellum (101) are the curved surface, and the connecting axle setting is at heating rod (1) lower extreme, and connector (3) set up the motor, and the connecting axle includes inner core (102) and outer axle (103), and outer axle (103) cover is established on inner core (102), inner core (102) and connecting wire (4) electric connection, and relative bottom plate (2) are fixed for generate heat, outer axle (103) are connected with the motor, and relative bottom plate (2) are rotatory for drive agitating unit rotates.

6. A steadily heating, linear, elevated temperature water bath as defined in claim 1, wherein: the clamp holder (6) comprises a vertical rod (601), a clamping rod (602), a fixing knob (603) and a clamping plate (604), one end of the vertical rod (601) is fixedly arranged on the bottom plate (2), the other end of the vertical rod is movably connected with one end of the clamping rod (602) through the fixing knob (603), the other end of the clamping rod (602) is provided with the clamping plate (604), the clamping plate (604) is vertically provided with a threaded hole (605), a plurality of container holes (606) and a plurality of inlets in a penetrating manner, the inlets are arranged on the side surface of the clamping plate (604) and communicated with the container holes (606) in a one-to-one manner, the lower end of the connector (3) is provided with a nut to be matched with the threaded hole (605) for use, the experimental container enters the clamping plate (604) from the inlets to be fixed on the container holes (606), the clamping plate (604) is a vertical stepped cylinder and is narrow at the upper part and the lower part of the experimental container holes, the upper end is back to the inlet and is fixedly connected with the clamping rod (602), and the lower end is in a round cake shape, is matched with the opening of the hot water kettle.

7. A method of controlling a steadily heating linear temperature increasing water bath as set forth in claim 2, characterized in that: when the actual temperature value T1 in the kettle body (701) is larger than the preset temperature value T0 calculated by the controller, the control method is that the controller controls the one-way valve (706) to feed water, the mass of the fed water is M2= M1 (T1-T0)/(T0-T2), wherein M1 is the mass of the residual water in the kettle body (701), and T2 is the actual temperature value of the water storage area (704).

8. A method of controlling a steadily heating linear temperature increasing water bath as set forth in claim 3, characterized in that: when the actual temperature value T1 in the kettle body (701) is smaller than the preset temperature value T0 calculated by the controller, the control method is that the controller controls the heating rod (1) to increase the heating power to be P1, the heating time is T1= c M1 (T0-T1)/(P1L 1), wherein c is the specific heat capacity of water, M1 is the mass of the residual water in the kettle body (701), and L1 is the heating efficiency of the heating rod (1).

9. A method of controlling a steadily heating linear temperature increasing water bath as set forth in claim 3, characterized in that: a control method for automatically adjusting the water level in a kettle body (701) comprises the steps that a controller sets a default lowest water level value H in the kettle body (701), when a first liquid level detector detects that an actual water level value H1 is smaller than the default lowest water level value H, the controller controls a one-way valve (706) to feed water from a water storage area (704) until the actual water level value H1 detected by the first liquid level detector is larger than the default lowest water level value H, meanwhile, heating power is increased to P0 according to water inflow control heating rods (1), heating time T0= c M0 (T0-T1)/(P0L 0), wherein c is the specific heat capacity of the water, M0 is the total mass of the water in the kettle body (701) after water inflow, T0 is a preset temperature value, T1 is an actual temperature value in the kettle body (701) after water inflow, and L0 is the heating efficiency of the heating rods (1).

10. A method of controlling a steadily heating linear temperature increasing water bath as set forth in claim 3, characterized in that: the linear heating method is characterized in that the controller calculates and controls the heating power P = c M (T0-T)/T0 of the heating rod (1) according to the set time T0 and the set temperature T0, wherein c is the specific heat capacity of water, and M is the mass of the water in the kettle body (701) fed back by the first liquid level detection meter.

Technical Field

The invention relates to the field of water baths, in particular to a stable heating linear temperature rise water bath and a control method thereof.

Background

The water bath device is mainly used for distilling, drying, concentrating and warm-soaking chemical drugs or biological products in a laboratory, can also be used for constant-temperature heating and other temperature tests, and is a necessary tool for biology, heredity, viruses, aquatic products, environmental protection, medicine, sanitation, laboratories, analysis rooms and educational scientific research. The linear temperature-raising water bath is one kind of water bath, and has the same temperature value raised in the same time and resistance heater set horizontally inside. To compensate for linear float, a cooling device is typically provided in the water bath, and a temperature control instrument, a power switch and a sensor are mounted on the front panel of the electrical box. The working principle is as follows: the sensor converts the temperature of the water in the water tank into a resistance value, and after the resistance value is amplified and compared by the integrated amplifier, the sensor outputs a control signal to effectively control the heating power of the resistance heater so as to keep the water in the water tank to be continuously and stably heated. However, the existing linear heating device has high requirement on temperature control precision, so the cost is high, the structure is complex, the use is inconvenient, and the operation is required by professional personnel.

Therefore, a linear temperature-rising water bath with low cost and high precision control is needed, chinese patent publication No. CN102955482B, the name of the invention is an intelligent linear temperature-rising temperature control device, the application discloses an intelligent linear temperature-rising temperature control device, a platinum resistance temperature sensor is used to convert the temperature into resistance value output, then a four-wire resistance measuring method is used to connect with four gauge head measuring ports of a digital multimeter through high temperature resistant wires, the digital multimeter and a digital power supply are connected with a computer through a GPIB bus, the computer remotely controls the real-time data acquisition, data storage and temperature rising process, the linear temperature rising control is composed of variable parameter PID and program control of high precision temperature rising rate measuring method in the cycle time, the regulating voltage obtained according to the linear temperature rising control is applied on the resistance heating sheet of the controlled object, thereby realizing the linear temperature rising of the controlled object, the method has the advantages of high control precision and strong stability. The disadvantages are that: the invention has the advantages of complex operation, excessive parameters required to be input manually, more equipment, complex structure and high cost, and is not beneficial to popularization and application.

The invention provides a stable heating linear temperature rise water bath device and a control method thereof. The heating rod is inserted into the thermos for heating, so that scale is less, and the heating rod is provided with the stirring device, so that water in the thermos is uniformly heated.

Disclosure of Invention

The present invention is directed to a linear temperature-raising water bath for stable heating and a control method thereof, so as to solve the problems of the background art.

The invention provides the following technical scheme: a linear temperature-rising water bath device capable of heating stably comprises a box body, a heating rod, a bottom plate, a connector, a connecting wire, a display and a clamp holder. The box is the thermos, the thermos upper end is opened there is circular opening, the heating rod includes first temperature detection meter, first level detection meter, be used for detecting temperature and water level in the thermos respectively, the cross-sectional area according to the thermos, the quality of thermos water-logging can be calculated to the controller, thermos swing joint is on the bottom plate, heating rod one end is passed the opening and is set up inside the thermos, the other end stretches out the thermos and is connected with connector one end, the connector other end sets up the connecting wire, the connecting wire other end is connected with the display, the holder is fixed to be set up in bottom plate one side and with the position relatively fixed of thermos, the inside controller that sets up of display, the heating rod passes through connecting wire and controller electric connection. The controller controls the heating rods to be at different heating powers so as to realize and compensate the trend that the water temperature linearly increases.

Furthermore, the thermos includes kettle body, kettle body handle, signal line, delivery port, water storage area, second temperature detection meter, second liquid level detection meter, insulating layer, check valve and heat dissipation layer. The kettle body is movably arranged on the bottom plate, the kettle body handle is arranged on the side edge of the kettle body, the signal wire penetrates through the upper end of the kettle body handle to be connected with the connector, the second temperature detection meter, the second liquid level detection meter and the one-way valve are electrically connected with the signal wire, the second temperature detection meter and the second liquid level detection meter transmit signals to the controller, and the one-way valve is controlled by the controller. The water storage area is arranged on one side of the kettle body, the water outlet is communicated with the kettle body and arranged at the upper end of the water storage area, the water storage area has double functions, the water storage area serves as cooling water of a water bath device and also serves as a supplementary water source of the water bath device, a water source enters the water storage area from the water outlet, and the water storage area and the water in the kettle body have temperature difference. It separates to set up the insulating layer between water storage area and the kettle body, prevents that the heat from transmitting to water storage area from the kettle body, and water storage area and kettle body contactless portion set up the heat dissipation layer to the temperature that guarantees water storage area is lower than the kettle body all the time. Deposit water district and be close to kettle body one side bottom and set up the check valve and switch-on with the kettle body, the water source can only be followed the check valve department flow direction kettle body that deposits the water district, and this internal water source of kettle can not flow backwards to depositing the water district, and check valve longitudinal extension, reduces the heat transfer. The second temperature detector and the second liquid level detector are arranged in the water storage area and used for detecting the water temperature and the water level of the water storage area, and the quality of the water in the water storage area can be calculated according to the second liquid level detector. Because the tested object can absorb heat in the actual using process of the water bath device, the condition that the temperature of the water bath is too high is not too high and is not too high than the preset temperature, the temperature of the water in the water storage area stored as cooling water is not required to be too low, and the water inflow as cooling water is not too high.

When the water storage kettle is used as a hot water kettle, the water storage area is heated together through the upper water outlet, but due to the existence of the heat dissipation layer, the temperature of a water source in the water storage area is reduced quickly after the water source is boiled, and the water flows out of the water outlet and is used firstly, so that a user can use the water storage kettle quickly, and scalding is prevented.

Further, the display comprises a plug, an interface, a timer, a temperature adjusting button, a switch button and a timing button, the connecting line is connected with the display through the interface, the connecting line, the timer, the temperature adjusting button and the timing button are electrically connected with the controller, the heating rod is in a controllable power heating mode, and the controller controls the heating power of the heating rod according to set time and set temperature. The user sets the time for heating and the final preset temperature to be reached in the experiment at the display, and the controller automatically adjusts the heating power of the heating rod and the heat quantity to be compensated by using a PID algorithm. The display screen displays the actual temperature value, the set time value and the residual time value, the residual time value is displayed in a countdown mode after the water bath device operates, and the residual time value is counted down by the set time value.

Furthermore, the bottom plate is a cuboid thin plate, threaded holes are formed in one side of the bottom plate in a penetrating mode and used for mounting the clamp, a plurality of hemispherical grooves are distributed in a central symmetry mode, a plurality of hemispherical water chestnuts with the number being the same as that of the grooves are symmetrically arranged on the lower surface of the kettle body, and the water chestnuts are in one-to-one correspondence with the grooves. The kettle body is movably fixed on the bottom plate through the water caltrops so as to ensure that the kettle body is fixed in position relative to the holder and is convenient for a user to use.

Further, heating rod lower extreme sets up agitating unit, agitating unit includes connecting axle and flabellum, and the flabellum is the curved surface, can produce ascending spiral flow power, and the connecting axle setting is at the heating rod lower extreme, and the connector sets up the motor, and the heating rod drives the connecting axle, and the connecting axle drives the flabellum rotation. The heating rod comprises an inner core and an outer shaft, the outer shaft is sleeved on the inner core, the inner core is electrically connected with the connecting wire, the relative bottom plate is fixed and used for generating heat, the outer shaft is connected with the motor, and the relative bottom plate rotates and is used for driving the stirring device to rotate. Agitating unit is favorable to this internal water thermally equivalent of kettle, because the check valve setting leans on the bottom at the kettle body, for preventing that the heat diffusion inequality leads to the temperature to have the difference, the agitating unit flabellum is the curved surface, forms ascending stable spiral flow power to the realization is heated evenly.

Further, the holder includes montant, supporting rod, fixed knob and splint, and montant one end is passed through the fix with screw nut and is set up on the bottom plate, and the other end passes through fixed knob and supporting rod one end swing joint, and the supporting rod other end sets up splint, through the position of fixed knob fixed splint and heating rod. The clamping plate is vertically provided with a threaded hole, a plurality of container holes and a plurality of inlets in a penetrating manner, and the inlets are arranged on the side surface of the clamping plate and are communicated with the container holes one to one. The connector lower extreme sets up the nut and uses with the screw hole cooperation, and the experiment container gets into splint from the entry, fixes in container hole department. The clamping plate is a vertical step cylinder, the upper part of the clamping plate is wide and the lower part of the clamping plate is narrow, the upper end of the clamping plate is back to the inlet and is fixedly connected with the clamping rod, and the lower end of the clamping plate is in a round cake shape and is matched with the opening of the thermos. When the thermos is used, the lower end cylinder enters the opening of the thermos to play a role in sealing, only the container hole and the open hole for installing the container are reserved, and the container hole is filled with the container.

A control method of a stable heating linear temperature rising water bath device comprises the following steps:

when the actual temperature value T1 in the kettle body is greater than the preset temperature value T0 calculated by the controller, the control method is that the controller controls the one-way valve to feed water, the mass of the fed water is M2= M1 (T1-T0)/(T0-T2), wherein M1 is the mass of the residual water in the kettle body, and T2 is the actual temperature value of the water storage area.

When the actual temperature value T1 in the kettle body is smaller than the preset temperature value T0 calculated by the controller, the control method is that the controller controls the heating rod to increase the heating power to be P1, the heating time is T1= c M1 (T0-T1)/(P1L 1), wherein c is the specific heat capacity of water, M1 is the mass of the residual water in the kettle body, and L1 is the heating efficiency of the heating rod under the heating power of P1.

A control method for automatically adjusting the water level in a kettle body comprises the steps that a controller sets a default lowest water level value H in the kettle body, when a first liquid level detector detects that an actual water level value H1 is smaller than the default lowest water level value H, the controller controls a one-way valve to feed water from a water storage area until the actual water level value H1 detected by the first liquid level detector is larger than the default lowest water level value H, meanwhile, the heating rod is controlled to increase heating power to P0 according to the water feeding amount, the heating time T0= c M0 (T0-T1)/(P0L 0), wherein c is the specific heat capacity of water, M0 is the total mass of the water in the kettle body after water feeding, T0 is a preset temperature value, T1 is an actual temperature value in the kettle body after water feeding, and L0 is the heating efficiency of the heating rod.

The linear heating method is that the controller calculates and controls the heating power P = c M (T0-T)/T0 of the heating rod according to the set time T0 and the set temperature T0, wherein c is the specific heat capacity of water, and M is the mass of the water in the kettle body fed back by the first liquid level detector.

Because the calculation of the linear heating method is a theoretical value, the heat value absorbed by the container and the solution is not calculated, (because the container and the solution are variables and cannot be put into a calculation program), and the opening at the upper end of the kettle body is opened, the actual temperature value is smaller than the expected temperature value under the general condition, the heating power of the heating rod needs to be controlled at any time, and the dynamic balance within the tolerance range is achieved.

Compared with the prior art, the invention has the following beneficial effects:

1. the kettle body that uses the thermos is the water tank, and sets up and deposit the water district as cooling regulation and control water source and add the water source, has saved cooling body and case of intaking, and the cost reduces by a wide margin to when using as the thermos, the earlier cooling after the water district boiling of depositing of going out water is fast, facilitates the use, prevents to scald the user.

2. Through adding the linear intensification process of cooling water and change heating power two-way regulation, device overall structure is simplified and control accuracy increases, and the user only need set up heating cycle and highest temperature, but the device automatic control linear intensification, easy operation facilitates the use.

3. The stirring device is arranged below the heating rod, so that uniform heating of water is facilitated, the stirring device generates upward spiral flow force, and the working environment condition of cold and hot water on the hot water kettle is effectively reduced. The scale is generated by heating in a heating rod mode, and the health use is facilitated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic plan view of a steadily heating linear warming water bath of the present invention;

FIG. 2 is a top view of a steadily heating linear warming water bath of the present invention;

FIG. 3 is a schematic view of a steadily heating linear temperature increasing water bath stirring device and heating rod of the present invention;

FIG. 4 is a top view of a steadily heating linear warming water bath clamp plate of the present invention;

FIG. 5 is a front view of a heated steady linear temperature water bath clamp of the present invention;

in the figure: 1. the water kettle comprises a heating rod, 2, a bottom plate, 3, a connector, 4, a connecting wire, 5, a display, 6, a holder, 601, a vertical rod, 602, a clamping rod, 603, a fixing knob, 604, a clamping plate, 605, a threaded hole, 606, a container hole, 701, a kettle body, 702, a kettle body handle, 703, a water outlet, 704, a water storage area, 705, a heat insulation layer, 706, a one-way valve, 707, a heat dissipation layer, 101, fan blades, 102, an inner core, 103 and an outer shaft.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: the invention relates to a linear temperature rising water bath device capable of heating stably, which comprises a box body, a heating rod 1, a bottom plate 2, a connector 3, a connecting wire 4, a display 5 and a clamp holder 6. The box is the thermos, the thermos upper end is opened there is circular opening, heating rod 1 includes first temperature detection meter, first level detection meter, be used for detecting temperature and water level in the thermos respectively, first temperature detection meter sets up at 1 lower extreme of heating rod, first level detection meter sets up at 1 side of heating rod, it is invariable that the relative thermos of height when heating rod 1 uses, the inside cylindrical cavity that is of thermos, according to the cross-sectional area of thermos, the controller can calculate the quality M = rho H S of thermos, wherein M is the quality of water, rho is the density of water, H is the height of water, S is the cross-sectional area of thermos. The thermos is movably connected to the bottom plate 2, the bottom plate 2 is square, and the lower ends of the four corners are provided with the same bosses which are placed on the working surface. The opening setting is passed inside the thermos to 1 one end of heating rod, and 1 end of heating rod leaves 10mm clearance apart from the thermos bottom, and the other end stretches out the thermos and is connected with 3 one end of connector, and the 3 other ends of connector set up connecting wire 4, and the 4 other ends of connecting wire are connected with display 5, and holder 6 is fixed to be set up in 2 one sides of bottom plate and relatively fixed with the position of thermos, the inside controller that sets up of display 5, and heating rod 1 passes through connecting wire 4 and controller electric connection. The controller controls the heating rod 1 to be at different heating powers so as to realize and compensate the trend that the water temperature linearly increases.

The hot water kettle comprises a kettle body 701, a kettle body handle 702, a signal wire, a water outlet 703, a water storage area 704, a second temperature detector, a second liquid level detector, a heat insulation layer 705, a one-way valve 706 and a heat dissipation layer 707. The kettle body 701 is movably arranged on the bottom plate 2, the kettle body handle 702 is arranged on the side edge of the kettle body 701, a signal wire penetrates through the upper end of the kettle body handle 702 and is connected with the connector 3, the second temperature detector, the second liquid level detector and the one-way valve 706 are electrically connected with the signal wire, the second temperature detector and the second liquid level detector transmit signals to the controller, and the one-way valve 706 is controlled by the controller. The water storage area 704 is arranged on one side of the kettle body 701, the water outlet 703 is communicated with the kettle body 701 and the water storage area 704 and is arranged at the upper end of the water storage area 704, the water storage area 704 has double functions, not only serves as a cooling water source of a water bath device, but also serves as a supplementary water source of the water bath device, a water source enters the water storage area 704 from the water outlet 703, and the temperature difference exists between the water storage area 704 and water in the kettle body 701. A heat insulation layer 705 is arranged between the water storage area 704 and the kettle body 701 for separating, so that heat is prevented from being transferred to the water storage area 704 from the kettle body 701; the non-contact part of the water storage area 704 and the kettle body 701 is provided with a heat dissipation layer 707 to ensure that the water temperature of the water storage area 704 is always lower than that of the kettle body 701. The water storage area 704 is provided with a one-way valve 706 at the bottom of one side close to the kettle body 701, the one-way valve 706 is communicated with the kettle body 701, a water source only can flow to the kettle body 701 from the one-way valve 706 of the water storage area 704, the water source in the kettle body 701 cannot flow back to the water storage area 704, and the one-way valve 706 extends longitudinally, so that heat transfer is reduced. The second temperature detector and the second level detector are provided in the water storage area 704 for detecting the water temperature and the water level of the water storage area 704, and the quality of the water in the water storage area 704 can be calculated according to the second level detector controller. Because the tested articles can absorb heat in the actual use process of the water bath device, the situation that the temperature of the water bath is too high is not too high and is not too high as much as the preset temperature, the water temperature of the water storage area 704 used for cooling storage does not need to be low, and the water inflow serving as cooling water is not too much.

When the water storage kettle is used as a hot water kettle, the water storage area 704 is heated together through the upper water outlet 703, but due to the existence of the heat dissipation layer 707, the temperature of a water source in the water storage area 704 is reduced quickly after boiling, and warm water flowing out of the water outlet 703 is used first, so that the water storage kettle is convenient for a user to use quickly, and scalding is prevented.

The display 5 comprises a plug, an interface, a timer, a temperature adjusting button, a switch button and a timing button, the connecting wire 4 is connected with the display 5 through the interface, and the connecting wire 4, the timer, the temperature adjusting button and the timing button are electrically connected with the controller. The heating rod 1 is in a controllable power heating mode, and the controller controls the heating power of the heating rod 1 according to the set time and the set temperature. The user sets the time required for heating and the desired temperature to be finally reached at the display 5, and the controller automatically adjusts the heating power of the heating rod 1 and the amount of heat to be compensated using the PID algorithm. The display screen displays the actual temperature value, the set time value and the residual time value, the residual time value is displayed in a countdown mode after the water bath device operates, and the residual time value is counted down by the set time value. If constant heating power and specific heating time are required, the highest set temperature needs to be calculated, and the set temperature is not more than 100 ℃.

Display 5 still has the alarm, the alarm can send the alarm sound, send the alarm that lasts slowly when the time-recorder countdown finishes, remind the user experiment to accomplish, in time take away the container, detect if second liquid level detection meter deposits water district 704 water yield for zero, and the controller receives the water source that needs quote water district 704, the alarm sends and lasts quick alarm, remind the user in time to add water, it only need deposit water in the delivery port 703 of water district 704 top to add water midway, experiment in order to guarantee in the kettle body 701 is not influenced.

The bottom plate 2 is a cuboid thin plate, threaded holes are formed in one side of the bottom plate in a penetrating mode and used for mounting the clamp holder 6, four hemispherical grooves are symmetrically formed in the middle of the bottom plate, four hemispherical water caltrops are symmetrically arranged on the lower surface of the kettle body 701, and the water caltrops correspond to the grooves one to one. The kettle body 701 is movably fixed on the bottom plate 2 through the water caltrops so as to ensure that the kettle body 701 is fixed relative to the clamp holder 6, and the kettle is convenient for a user to use. When the water kettle is used as a hot water kettle, the water kettle body 701 can be placed at other positions, and the water chestnuts are used for supporting the water kettle body 701 and reducing the abrasion of the water kettle body 701.

The lower extreme of heating rod 1 sets up agitating unit, and agitating unit includes connecting axle and flabellum 101, and flabellum 101 is the curved surface, can produce ascending spiral flow power, and the connecting axle setting is at heating rod 1 lower extreme, and connector 3 sets up the motor, and by motor drive heating rod 1, heating rod 1 drives the connecting axle, and the connecting axle drives flabellum 101 rotatory. The heating rod 1 comprises an inner core 102 and an outer shaft 103, the outer shaft 103 is sleeved on the inner core 102 and is made of alloy steel, so that the heating rod is high in heat conductivity and high in torque resistance; inner core 102 and connecting wire 4 electric connection, it is fixed relative bottom plate 2 for generate heat, outer axle 103 is connected with the motor, and relative bottom plate 2 is rotatory, is used for driving agitating unit to rotate. Agitating unit is favorable to the water thermally equivalent in kettle body 701, because check valve 706 sets up and leans on the bottom at kettle body 701, for preventing that the uneven temperature that leads to of heat diffusion has the difference, agitating unit flabellum 101 is the curved surface, forms ascending stable spiral flow power, realizes being heated evenly.

The holder 6 comprises a vertical rod 601, a clamping rod 602, a fixing knob 603 and a clamping plate 604, wherein one end of the vertical rod 601 is fixedly arranged on the bottom plate 2 through a screw and a nut, the other end of the vertical rod is movably connected with one end of the clamping rod 602 through the fixing knob 603, the clamping rod 602 is provided with the clamping plate 604, and the position of the clamping plate 604 and the position of the heating rod 1 are fixed through the fixing knob 603. The fixing position of the vertical bar 601 and the holding rod 602 is constant to ensure that the depth of the heating rod 1 entering the kettle body 701 is constant, but the fixing knob 603 can determine the horizontal position of the holding rod 602 according to different positions so as to install the container and the clamping plate 604. The splint 604 is provided with a threaded hole 605, 2 container holes 606 and 2 inlets in a vertical penetrating manner, the inlets are arranged on the side surface of the splint 604 and are communicated with the container holes 606 in a one-to-one manner, and the inlets are flared openings, so that containers can enter conveniently. The lower end of the connector 3 is provided with a nut which is matched with the threaded hole 605 for use, an experimental container enters the clamping plate 604 from the inlet and is fixed at the container hole 606, and the threaded hole 605 can ensure that the heating rod 1 is fixed up and down within the displacement range of 0-10mm, so that the clamping plate 604 covers the opening of the kettle body 701. The clamp plate 604 is a vertical stepped cylinder with a wide top and a narrow bottom, the upper end is fixedly connected with the clamping rod 602 at a position back to the inlet, and the lower end is in a shape of a round cake and is matched with the opening of the thermos. When the thermos is used, the lower end cylinder enters the opening of the thermos to play a role in sealing, only the container hole 606 and the opening for installing the container are reserved, the container hole 606 is filled with the container, and heat loss is reduced to the maximum extent.

The working principle is as follows:

1. adding suitable amount of water in the thermos before using, kettle body 701 and water storage area 704 all have the water source, and container hole 606 is just to kettle body 701 opening, and the opening of kettle body 701 is covered to splint 604, and the container gets into container hole 606 and immerses in kettle body 701 from the entry, and the clip drives heating rod 1 simultaneously and gets into kettle body 701 at fixed height. The user presses the switch button to turn on the display 5, and sets the maximum temperature value and the heating time. The controller controls the heating power change of the heating rod 1 to start heating, the timer runs in a count-down mode to ensure that the temperature rise temperature is the same in the same time, and according to signals transmitted by the first temperature detector and the first liquid level detector, the heating power of the heating rod 1 is increased to raise the temperature or the cold water introduced into the water storage area 704 by the one-way valve 706 is controlled to lower the temperature. Meanwhile, the controller controls the motor of the connector 3 to rotate, and the motor drives the fan blades to rotate. When the water amount in the kettle body 701 is insufficient, the controller introduces the water amount in the water storage area 704 according to the signal of the first liquid level detector, and calculates the heating power of the heating rod 1 according to the second liquid level detector and the second temperature detector to increase the temperature and compensate the heat lost by the introduced cold water.

2. And when the count is finished by countdown, the controller controls the heating rod 1 to stop heating, the motor stops rotating, and the alarm gives out continuous and slow alarm sound.

A control method of a stable heating linear temperature rising water bath device comprises the following steps:

when the actual temperature value T1 in the kettle body 701 is greater than the predetermined temperature value T0 calculated by the controller, the control method is that the controller controls the check valve 706 to feed water, and the mass of the fed water is M2= M1 (T1-T0)/(T0-T2), wherein M1 is the mass of the residual water in the kettle body 701, and T2 is the actual temperature value of the water storage area 704.

When the actual temperature value T1 in the kettle body 701 is smaller than the predetermined temperature value T0 calculated by the controller, the control method is that the controller controls the heating rod 1 to increase the heating power to P1, the heating time is T1= c M1 (T0-T1)/(P1L 1), wherein c is the specific heat capacity of water, M1 is the mass of the water remaining in the kettle body 701, and L1 is the heating efficiency of the heating rod 1 under the heating power P1.

A control method for automatically adjusting the water level in a kettle body 701 comprises the following steps: the controller sets a default minimum water level value H in the kettle body 701, when the first liquid level detector detects that the actual water level value H1 is smaller than the default minimum water level value H, the controller controls the check valve 706 to feed water from the water storage area 704 until the actual water level value H1 detected by the first liquid level detector is larger than the default minimum water level value H, meanwhile, the heating rod 1 is controlled to increase the heating power to P0 according to the water feeding amount, the heating time T0= c M0 (T0-T1)/(P0L 0), wherein c is the specific heat capacity of the water, M0 is the total mass of the water in the kettle body 701 after water feeding, T0 is a preset temperature value, T1 is an actual temperature value in the kettle body 701 after water feeding, and L0 is the heating efficiency of the heating rod 1.

The linear heating method comprises the following steps: the controller calculates and controls the heating power P = c M (T0-T)/T0 of the heating rod 1 according to the set time T0 and the set temperature T0, wherein c is the specific heat capacity of water, and M is the mass of the water in the kettle body 701 fed back by the first liquid level detector.

Because the calculation of the linear heating method is a theoretical value, and the calorific value absorbed by the container and the solution thereof is not calculated, (because the container and the solution thereof are variables and cannot be put into a calculation program), the opening at the upper end of the kettle body 701 is opened, so that generally, the actual temperature value is smaller than the expected temperature value, the heating power of the heating rod 1 needs to be controlled at any time, and the dynamic balance within the tolerance range is achieved.

It is noted that, in this document, relational terms such as front, back, up, down, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.