CN201308842Y - Miniature temperature bath pot for positive temperature coefficient thermistor heating element - Google Patents
Miniature temperature bath pot for positive temperature coefficient thermistor heating element Download PDFInfo
- Publication number
- CN201308842Y CN201308842Y CNU2008201993670U CN200820199367U CN201308842Y CN 201308842 Y CN201308842 Y CN 201308842Y CN U2008201993670 U CNU2008201993670 U CN U2008201993670U CN 200820199367 U CN200820199367 U CN 200820199367U CN 201308842 Y CN201308842 Y CN 201308842Y
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- temperature
- heating element
- hollow insulating
- circuit board
- ptc
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Abstract
The utility model relates to a miniature temperature bath pot for a positive temperature coefficient thermistor (PTC) heating element. A metal pan is sleeved at the top end of a hollow insulating barrel with two open ends; an insulating board, a metal heat collector and a PTC heating element are positioned and installed in the position close to the lower part of the metal pan in sequence, and a temperature protector is installed in the position close to the back side of the PTC heating element; a circuit board connected with relevant electric appliance elements through wires is positioned and installed at the lower part of the hollow insulating barrel, and the circuit board is respectively connected with the PTC heating element, the temperature protector and the temperature sensor through wires; and a power socket and a bottom plate which are connected with the circuit board through wires are arranged at the lower part of the hollow insulating barrel. The miniature temperature bath adopts the PTC as the heating element and has the advantages of small volume, light weight, low power consumption, fireproof protection, security and reliability; and the miniature temperature bath pot can be carried with single hand, is convenient for defrosting, constant temperature and heat preservation of small articles such as injection, and is suitable for scientific researches, medical service, enterprises and laboratories.
Description
Technical field
The utility model relates to a kind of warm bath that is used for the thawing of organism, inorganic body, solid, liquid object, constant temperature, insulation, and particularly a kind of positive temperature coefficient thermistor heat element minitype heating bath pot is called for short PTC element minitype temperature bath.
Background technology
The temperature bath is as being called water-bath, tepidarium, tank etc. with water again as working media, as being called oil bath pan, warm oil bath, oil groove etc. with oil again as working media, or is constant temperature bath, thermostat.
Existing temperature bath, working body volume big (hundreds of cubic centimetres are to tens thousand of cubic centimetres), power consumption big (hundreds of VA are to thousands of VA), bathe the injection of a number milliliter if need temperature, but to consume so many electric energy, obviously do not meet current energy conservation and environment protection just like " low load with strong power ", and bathed body running displacement difficulty.Hot body under the situation of " doing pot ", is easy to explosion as electrothermal tube mostly with forms such as electrothermal tube, heating wire, eddy current, utmost point discharge, PN junctions, has potential safety hazard.Temperature control method, the electronic temperature controller of using bimetal release, pressure type temperature detect switch (TDS), expansion type temperature detect switch (TDS), electronic temperature controller, PID adjuster and band PID to regulate mostly, these all make warm bath be difficult to accomplish miniaturization, and the electronic temperature controller that electronic temperature controller, PID adjuster and band PID regulate, cost an arm and a leg, be difficult to reach field＜± 1 ℃ of fluctuation of 24 hours temperature with bimetal release, pressure type temperature detect switch (TDS), its temperature control effect of expansion type temperature detect switch (TDS).
Existing temperature bath, working power single-mode: AC; 220V ± 10%, perhaps AC; 110V ± 10% is difficult to adapt to countries in the world, and the each department different electrical power just has two kinds of power supplys, 110V/220V as area in Japan.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of semistor (being called for short PTC) element minitype temperature bath, hereinafter to be referred as PTC element minitype temperature bath.
Element minitype temperature bath is convenient to the thawing of small articles such as injection, constant temperature, insulation; Be applicable to scientific research, medical treatment, enterprise, laboratory.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of positive temperature coefficient thermistor heat element minitype heating bath pot, the top of the penetrating hollow insulating concrete cylinder suit disc metal pan movingly at two ends; Below metal pan, successively at hollow insulating concrete cylinder inwall, location and installation insulation board, the collector metal device that temperature sensor subzero temperature thermistor is housed and semistor heater are close to the back side of semistor heater temperature insurance device are installed; Be provided with overcurrent insurance DB, bidirectional triode thyristor SK, voltage comparator ic, transistor Q and the photoelectric coupling circuit GE that lead connects in the bottom of hollow insulating concrete cylinder location and installation, the circuit board of the relevant electric elements of temperature-adjusting potentiometer W, circuit board and semistor heater and temperature insurance device, temperature sensor subzero temperature thermal resistor wire are connected; On the lateral wall of hollow insulating concrete cylinder bottom, be provided with the supply socket that is connected with the circuit board lead; At the bottom of hollow insulating concrete cylinder location and installation base plate.
The beneficial effects of the utility model are:
1. it adopts the miniature temperature bath of semistor (PTC) as heater, and its working body volume is about 20 cubic centimetres, and the working body Controllable Temperature is built in 40 ℃～55 ℃, and power consumption only about 15VA, has anti-flaming protection, and is safe and reliable; The subzero temperature thermistor that adopts small and exquisite cheapness is carried out temperature control as sensor with controllable silicon, electronic circuit, and its temperature control effect can reach field＜± 0.5 ℃ of fluctuation of 24 hours temperature, and working power is tolerance pattern: AC; 80V～240V adapts to countries in the world, the each department different electrical power; Miniature, quiet, safe operation have been realized.It low in energy consumption, volume is little, in light weight, and one hand is a portability, is convenient to the thawing of small articles such as injection, constant temperature, insulation, is applicable to scientific research, medical treatment, enterprise, laboratory; Thereby avoid adopting existing temperature bath, working body volume big (hundreds of cubic centimetres to tens thousand of cubic centimetres), power consumption big (hundreds of VA are to thousands of VA), for the injection of need temperature bath one number milliliter, just like " low load with strong power ", the waste electric energy; And the small articles that the needs temperature is bathed to be delivered to the unit with existing temperature bath, and wait in line to arrange, very inconvenient.
2. temperature insurance device is equipped with at the back side of being close to heater, when temperature control circuit because of certain reason when out of control, when the PTC temperature rises to Temperature protection WB demarcation temperature, Temperature protection WB opens circuit at once, the loop of cutting off the electricity supply, thereby avoid the too high disaster hidden-trouble that causes of Yin Wendu, guarantee the safe operation of warm bath.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the electrical principle schematic diagram of PTC element minitype temperature bath.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1: a kind of PTC element minitype temperature bath, the top of the penetrating hollow ambroin cylinder 6 suit disc metal pan 2 movingly at two ends is as the thawing of object, constant temperature, cool-bag.Below metal pan 2, successively at hollow ambroin cylinder 6 inwalls, location and installation insulation board 3, the collector metal device 4 of temperature sensor subzero temperature thermistor 11 is housed and heats object, carry out adjustment and temperature controlled PTC heater 5, be close to the back side of PTC heater 5 temperature insurance device 10 is installed; Be provided with overcurrent insurance DB, bidirectional triode thyristor SK, voltage comparator ic, transistor Q and the photoelectric coupling circuit GE that lead connects in the bottom of hollow ambroin cylinder 6 location and installation, the circuit board 9 of the relevant electric elements of temperature-adjusting potentiometer W, circuit board 9 is connected with PTC heater 5 and temperature insurance device 10 temperature sensor subzero temperature thermistors 11 leads; On the lateral wall of hollow ambroin cylinder 6 bottoms, be provided with the supply socket 7 that is connected with circuit board 9 leads; At the bottom of hollow ambroin cylinder 6 location and installation base plate 8.
As shown in Figure 2: the electrical principle of embodiment 1 described PTC element minitype temperature bath is as follows;
Power supply insures DB, Temperature protection WB through overcurrent, enters bidirectional triode thyristor SK and is connected with PTC, and whether PTC has electric current to pass through, heating up, depend on whether conducting of bidirectional triode thyristor SK, and whether conducting of bidirectional triode thyristor SK depends on again whether the control utmost point G of bidirectional triode thyristor SK has Continuity signal.
IC is a voltage comparator among Fig. 2, and W is the temperature setting, and F is the voltage setting.Initial, entire circuit rigidly connects energize, is installed in the temperature sensor subzero temperature thermistor FM on heat collector 4 (see figure 1)s, the temperature that is provided with in W at the bottom of the temperature of being experienced, FM presents higher resistance value, and the Z point voltage is higher than the F point voltage, the O point presents high potential, transistor Q conducting, the built-in LED of photoelectric coupling circuit GE is luminous, the photoelectric tube conducting that GE is built-in, signal enters the control utmost point G of bidirectional triode thyristor SK, the SK conducting, PTC is by electric current, heating up.
Along with temperature raises, be installed in the temperature sensor subzero temperature thermistor FM on the heat collector, the temperature of being experienced reaches the temperature that W is provided with, the resistance value of FM lowers thereupon, the Z point voltage is lower than the F point voltage, and the O point presents electronegative potential, and transistor Q ends, the built-in LED of photoelectric coupling circuit GE is dark, the built-in photoelectric tube of GE ends, and the control utmost point G of bidirectional triode thyristor SK does not have Continuity signal, and SK ends, the PTC current cut-off stops heating.
Temperature protection WB, be that to be close to PTC back mounted, see Fig. 1, when temperature control circuit because of certain reason when out of control, when the PTC temperature rose to Temperature protection WB demarcation temperature, Temperature protection WB opened circuit at once, the loop of cutting off the electricity supply, thereby avoid the too high disaster hidden-trouble that causes of Yin Wendu, guarantee the safe operation of warm bath.
Claims (1)
1, a kind of positive temperature coefficient thermistor heat element minitype heating bath pot is characterized in that: the top of penetrating hollow insulating concrete cylinder (6) the suit disc metal pan (2) movingly at two ends; Below metal pan (2), successively at hollow insulating concrete cylinder (6) inwall, location and installation insulation board (3), the collector metal device (4) that temperature sensor subzero temperature thermistor (11) is housed and semistor heater (5) are close to the back side of semistor heater (5) temperature insurance device (10) are installed; Bottom location and installation at hollow insulating concrete cylinder (6) is provided with overcurrent insurance DB, bidirectional triode thyristor SK, voltage comparator ic, transistor Q and the photoelectric coupling circuit GE that lead connects, the circuit board (9) of the relevant electric elements of temperature-adjusting potentiometer W, circuit board (9) and semistor heater (5) and temperature insurance device (10), temperature sensor subzero temperature thermistor (11) lead are connected; On the lateral wall of hollow insulating concrete cylinder (6) bottom, be provided with the supply socket (7) that is connected with circuit board (9) lead; At the bottom of hollow insulating concrete cylinder (6) location and installation base plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201993670U CN201308842Y (en) | 2008-12-02 | 2008-12-02 | Miniature temperature bath pot for positive temperature coefficient thermistor heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201993670U CN201308842Y (en) | 2008-12-02 | 2008-12-02 | Miniature temperature bath pot for positive temperature coefficient thermistor heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201308842Y true CN201308842Y (en) | 2009-09-16 |
Family
ID=41106093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201993670U Expired - Lifetime CN201308842Y (en) | 2008-12-02 | 2008-12-02 | Miniature temperature bath pot for positive temperature coefficient thermistor heating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201308842Y (en) |
-
2008
- 2008-12-02 CN CNU2008201993670U patent/CN201308842Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |
|
| CX01 | Expiry of patent term |