CN202382425U - Auxiliary electric-heating temperature control system of water system - Google Patents
Auxiliary electric-heating temperature control system of water system Download PDFInfo
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- CN202382425U CN202382425U CN2011205087060U CN201120508706U CN202382425U CN 202382425 U CN202382425 U CN 202382425U CN 2011205087060 U CN2011205087060 U CN 2011205087060U CN 201120508706 U CN201120508706 U CN 201120508706U CN 202382425 U CN202382425 U CN 202382425U
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- heating temperature
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Abstract
The utility model discloses an auxiliary electric-heating temperature control system of a water system. The auxiliary electric-heating temperature control system comprises a main controller, a display device and two alternating-current contactors, wherein the display device is connected with the main controller; main contacts of the two alternating-current contactors are connected with a power supply loop of an electric heater in series; the control end of the first alternating-current contactor is connected with the main controller; the second alternating-current contactor is provided with a pair of auxiliary contacts; a control loop of the second alternating-current contactor is connected with a temperature fuse and a temperature controller in series; and the auxiliary contacts are connected into the signal input end of the main controller by virtue of a detection circuit. The two alternating-current contactors are connected in a main power supply loop of the electric heater in series, one alternating-current contactor is used for automatic control, and the other alternating-current contactor is automatically controlled by virtue of the control loop formed by the temperature controller and the temperature fuse, so that when an electric heating system is overheated or is subjected to dry heat, the main power supply loop of the electric heater can be disconnected automatically; and the main controller is used for detecting states of the auxiliary contacts, and further, the display device is used for outputting fault states in real time, thereby facilitating the overhaul and ensuring the use safety of the heating system.
Description
Technical field
The utility model relates to a kind of temperature control system, especially a kind of auxiliary electrically heated temperature control system of water system that is applied to.
Background technology
The electrical heating of using for water system at present adopts temperature controller to control the method for power supply major loop more, and its principle is as shown in Figure 1; When water temperature reaches the protection value; The bulb of temperature controller promotes the contact and breaks off to cut off the electricity supply, and when temperature was hanged down, the temperature controller contact reclosed and continues heating; Thereby play the effect of temperature control and anti-dry, this conventional art exists number of applications:
Chinese patent document CN101608829 promptly discloses a kind of hot-water heating system of anti-dry; Include water container; Be fixed with electric heating tube on the outer bottom of water container; And the anti-dry heating temperature controller of the outer bottom temperature of induction water container, the inner bottom surface of said water container is the inclined-plane, described anti-dry heating temperature controller is positioned at by the high-end side in inclined-plane.When water level is done soon, utilize the high end position in inclined-plane to surface prior to the inclined-plane lower position and the rapid principle that rises of temperature, anti-dry heating temperature controller is just started working; Circuit is broken off; Electric heating tube quits work, thereby plays the effect of anti-dry, has improved the security of hot-water heating system.
Chinese patent document CN201348392 discloses a kind of electric heater that is used for solar water heater; Electric heater is installed on the solar water heater; Comprise: electrothermal tube, temperature controller, temperature tube and have the flange of standard interface; Wherein: flange is installed on the inner bladder outer wall of solar water heater, and temperature controller is fixedly installed on the flange and is positioned at the inner bag outside of solar water heater, temperature tube riveted joint or be welded on the flange and stretch into the inner bag the inside; The temperature-sensing probe of the temperature controller temperature tube of packing into, electrothermal tube are fixed on the flange and stretch into the inner bag the inside.Adopt high temperature to stop the temperature controller that heats automatically, stop heating automatically after making water arrive uniform temperature, thereby can not cause dry combustion method, waste electric energy and security incident.
Implementation by above several kinds of prior aries can know that at present traditional auxiliary electrical heating control mode exists following shortcoming:
1, adopts temperature controller control separately, can't detect the duty of electric heater;
2, electrical heating dry combustion method etc. occurs and can't send fault when unusual, occur very big influence being arranged repeatedly for the life-span of electric heater;
Can't notify the user when 3, breaking down, user's security is constituted a threat to;
4, electric heater capacity is generally very big, and temperature controller directly seals in major loop, need bear very big electric current, and heating power causes the damage of temperature controller easily for a long time.
The utility model content
The purpose of the utility model provides a kind of water system auxiliary electrical heating temperature-control system, has avoided temperature controller directly to seal in major loop, and has the malfunction Presentation Function, can effectively avoid the generation of security incident.
The purpose of the utility model is to realize through following technical scheme:
A kind of water system auxiliary electrical heating temperature-control system; Comprise master controller and the display unit that is attached thereto; Also comprise two A.C. contactors, both main contacts are serially connected with the current supply circuit of electric heater, and wherein the first A.C. contactor control end and master controller join; Second A.C. contactor has a pair of auxiliary contact, its control loop serial connection Thermal Cutoffs and temperature controller, and said auxiliary contact insert the signal input part of said master controller through testing circuit.
Further, the protection value of said Thermal Cutoffs is higher than the protection value of temperature controller.
Special, said temperature controller contact is normally closed, the second A.C. contactor main contacts is for often opening.
Said testing circuit is made up of resistance R 1, resistance R 2, capacitor C and diode D; Auxiliary contact one end connects the negative pole of said diode D; Other end ground connection, the positive pole of diode D connect an end of resistance R 1 and resistance R 2, the other end connection+5V voltage of resistance R 1 simultaneously; The other end of resistance R 2 is as signal input part, and through capacitor C ground connection.
The described electrical heating temperature control system of the utility model; Through two A.C. contactors of series connection in the main circuit power supply of electric heater; One is used for ACTIVE CONTROL, and another is controlled by the control loop that temperature controller and Thermal Cutoffs constitute automatically, can be at electric heating system overheated or when dry combustion method occurring; The main circuit power supply of automatic disconnection electric heater; And detect the state of auxiliary contact by master controller, and further export malfunction in real time through display unit, conveniently overhaul and guaranteed the safe in utilization of heating system.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural principle sketch map that traditional auxiliary electrical heats control mode;
Fig. 2 is the structural principle sketch map of the said water system auxiliary electrical of embodiment heating temperature-control system;
Fig. 3 is the signal deteching circuit figure that the said water system auxiliary electrical of embodiment heating temperature-control system is adopted;
Fig. 4 is the signal processing flow figure of the said water system auxiliary electrical of embodiment heating temperature-control system.
The specific embodiment
As shown in Figure 2; Provided the structural principle sketch map of a specific embodiment of the utility model; Its composition comprises as the chip of master controller and the display that is attached thereto; Also comprise two A.C. contactors, both main contacts are serially connected with the current supply circuit of electric heater, and wherein A.C. contactor 1 control end and chip join; A.C. contactor 2 has a pair of normally closed auxiliary contact, its control loop serial connection Thermal Cutoffs and temperature controller, and said auxiliary contact insert the signal input part of chip through testing circuit.
For forming the gradient protection, the protection value of said Thermal Cutoffs is higher than the protection value of temperature controller.
Special, said temperature controller contact is normally closed, the second A.C. contactor main contacts is for often opening.
A.C. contactor 1 is realized the interlock control to electric heater with A.C. contactor 2; Under the normal power-up state; Because Thermal Cutoffs and temperature controller are short-circuit condition; A.C. contactor 2 is in normally closed state, and this moment, chip was controlled the break-make of electric heater current supply circuit through the switching of control A.C. contactor 1.
In the normal energising, A.C. contactor 2 always is in conducting state, and then contact 1 is in off-state with contact 2; If the action of temperature controller or Thermal Cutoffs occurs, 2 of A.C. contactors are in off-state, and contact 1 is in conducting state at this moment with contact 2.Chip judges whether to occur overheated through the state that detects contact 1 and contact 2 or the dry combustion method protection, and simultaneously to the real-time malfunction of display output.
Fig. 3 has provided the signal deteching circuit that chip adopts, and as shown in the figure, said signal deteching circuit is made up of resistance R 1, resistance R 2, capacitor C and diode D; Auxiliary contact one end connects the negative pole of said diode D; Other end ground connection, the positive pole of diode D connect an end of resistance R 1 and resistance R 2, the other end connection+5V voltage of resistance R 1 simultaneously; The other end of resistance R 2 is as signal input part, and through capacitor C ground connection.
Chip judges whether to produce fault through the high-low level of detected input signal, and simultaneously to the corresponding indicating fault of display output, Fig. 4 is the signal processing sketch map.
The duty of each device is as shown in the table in the course of work,
Can find out that through form in temperature controller and the Thermal Cutoffs duplicate protection, as long as there is one to be in the OFF state, then auxiliary contact are the ON state, chip detection is to this state and report to the police; A.C. contactor 2 breaks off simultaneously, has avoided the electric heater misoperation from hardware, and can produce fault through the display prompts user.
Above-mentioned explanation is specifying to the feasible embodiment of the utility model; And this embodiment is not the claim in order to restriction the utility model; Allly do not break away from the equivalence that the utility model technical spirit done and implement or change, for example adopt different microprocessor chips to use embodiment as master controller all should be contained in the claim that the application asks for protection.
Claims (4)
1. water system auxiliary electrical heating temperature-control system; Comprise master controller and the display unit that is attached thereto; It is characterized in that: also comprise two A.C. contactors, both main contacts are serially connected with the current supply circuit of electric heater, and wherein the first A.C. contactor control end and master controller join; Second A.C. contactor has a pair of auxiliary contact, its control loop serial connection Thermal Cutoffs and temperature controller, and said auxiliary contact insert the signal input part of said master controller through testing circuit.
2. water system auxiliary electrical heating temperature-control system according to claim 1 is characterized in that: the protection value of said Thermal Cutoffs is higher than the protection value of temperature controller.
3. water system auxiliary electrical heating temperature-control system according to claim 1 is characterized in that: said temperature controller contact is normally closed, and the said second A.C. contactor main contacts is for often opening.
4. according to described any water system auxiliary electrical heating temperature-control system of claim 1 to 3; It is characterized in that: said testing circuit is made up of resistance R 1, resistance R 2, capacitor C and diode D, and auxiliary contact one end connects the negative pole of said diode D, other end ground connection; The positive pole of diode D connects an end of resistance R 1 and resistance R 2 simultaneously; Other end connection+5V the voltage of resistance R 1, the other end of resistance R 2 is as signal input part, and through capacitor C ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205087060U CN202382425U (en) | 2011-12-08 | 2011-12-08 | Auxiliary electric-heating temperature control system of water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205087060U CN202382425U (en) | 2011-12-08 | 2011-12-08 | Auxiliary electric-heating temperature control system of water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382425U true CN202382425U (en) | 2012-08-15 |
Family
ID=46630922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205087060U Withdrawn - After Issue CN202382425U (en) | 2011-12-08 | 2011-12-08 | Auxiliary electric-heating temperature control system of water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382425U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444989A (en) * | 2011-12-08 | 2012-05-09 | 青岛海尔空调电子有限公司 | Water system auxiliary electrical heating temperature control system and control method |
| CN104422140A (en) * | 2013-09-02 | 2015-03-18 | 海尔集团公司 | High-power heater, electric water heater comprising same and control method of electric water heater |
| CN107387340A (en) * | 2017-07-27 | 2017-11-24 | 北京金风科创风电设备有限公司 | Heating deicing system and method for blades of wind turbine generator and heating system |
-
2011
- 2011-12-08 CN CN2011205087060U patent/CN202382425U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444989A (en) * | 2011-12-08 | 2012-05-09 | 青岛海尔空调电子有限公司 | Water system auxiliary electrical heating temperature control system and control method |
| CN102444989B (en) * | 2011-12-08 | 2014-08-06 | 青岛海尔空调电子有限公司 | Water system auxiliary electrical heating temperature control system and control method |
| CN104422140A (en) * | 2013-09-02 | 2015-03-18 | 海尔集团公司 | High-power heater, electric water heater comprising same and control method of electric water heater |
| CN107387340A (en) * | 2017-07-27 | 2017-11-24 | 北京金风科创风电设备有限公司 | Heating deicing system and method for blades of wind turbine generator and heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120815 Effective date of abandoning: 20140806 |
|
| RGAV | Abandon patent right to avoid regrant |