CN104807073A - Wireless remote energy-saving control heat supply metering system - Google Patents
Wireless remote energy-saving control heat supply metering system Download PDFInfo
- Publication number
- CN104807073A CN104807073A CN201510245617.4A CN201510245617A CN104807073A CN 104807073 A CN104807073 A CN 104807073A CN 201510245617 A CN201510245617 A CN 201510245617A CN 104807073 A CN104807073 A CN 104807073A
- Authority
- CN
- China
- Prior art keywords
- temperature
- valve
- electric heating
- heating constant
- constant temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
- Control Of Temperature (AREA)
Abstract
The invention relates to a wireless remote energy-saving control heat supply metering system and belongs to the technical field of heat supply metering systems. The system comprises an indoor temperature controller, an electric heating constant temperature valve, a valve controller, a heat meter and a control device, wherein the electric heating constant temperature valve and the heat meter are mounted on a home-entry heating pipeline respectively; the valve controller is electrically connected with the electric heating constant temperature valve and the heat meter; the indoor temperature controller is connected with the valve controller and the control device respectively; the valve controller comprises a receiving control device and an actuator connected with the receiving control device; the receiving control device is connected with the indoor temperature controller and the heat meter respectively; the actuator is in transmission connection with the electric heating constant temperature valve. The indoor temperature controller of the wireless remote energy-saving control heat supply metering system can monitor indoor temperature more comprehensively, and can feed a signal back to the valve controller in time through computation; moreover, the applied actuator is high in stability and high in sensitivity, and the good operation of equipment can be effectively guaranteed.
Description
Technical field
The invention belongs to the technical field of power-supply metering system, in particular, the present invention relates to a kind of wireless remote Energy Saving Control power-supply metering system.
Background technology
In the winter time, weather is colder for northern area, and main heating means are exactly central heating.Central heating needs heating duration long, should central heating save money.From using energy source aspect, central heating one-time investment is large, and operating cost is high, no matter the need of, heating installation whole day heat supply all the time.Current heating charge major part is charged according to construction area or usable floor area.Such charge method is user is not much that oneself area is also calculated in heat cost.
In addition, the size towards, house of heating effect also with house is relevant with function.The heating system of extensive style that what current heating adopted is, the heat energy of each user's turnover is identical, so just occurred that user indoor temperature has reached enough conditions and can not reduce or close heating, cannot realize from main regulation, temperature can only be regulated in the mode of ventilating of windowing, cause a large amount of thermal waste, also some user can not get enough heat energy simultaneously, heat distribution is unbalanced, user satisfaction is low, charge difficulty can be caused when problem is serious, cause loss economically to Thermal Corp.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, the object of the present invention is to provide a kind of room temperature can autonomous sensitive adjustment, the wireless remote Energy Saving Control power-supply metering system of heat energy consumption information can be inquired about.
To achieve these goals, present invention employs following technical scheme:
A kind of wireless remote Energy Saving Control power-supply metering system, comprises indoor thermostat, electric heating constant temperature valve, valve positioner, heat energy meter and control device; Described electric heating constant temperature valve and heat energy meter are installed in registers one's residence on hot duct, and described valve positioner is electrically connected with described heat energy meter with described electric heating constant temperature valve; It is characterized in that: described indoor thermostat is connected with valve positioner and control device respectively; The actuator that described valve positioner comprises receiving control device and is connected with receiving control device; Described receiving control device is connected with indoor thermostat, heat energy meter respectively; Described actuator can control electric heating constant temperature valve and be in the state of opening or closing.
Wherein, electric heating constant temperature valve adopts stop valve structure, and is control valve open in usual.
Wherein, described indoor thermostat has 1 temperature sensor, and when the temperature t measured is higher than design temperature 1.5 DEG C, the control signal that indoor thermostat sends " closedown " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and closes; When the temperature t measured is lower than design temperature 1.5 DEG C, the control signal that indoor thermostat sends " opening " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and opens.
Wherein, the room temperature that indoor thermostat gathers, is transferred in control device, and passes through the temperature t of display device display measurement.
Wherein, described indoor thermostat comprises N number of temperature sensor for measuring N number of test point place temperature, and described N number of temperature sensor is mutually away from setting; According to the integer that heating area N is between 3 ~ 9; Described indoor thermostat to count samming degree T, described T=(T according to the thermometer measured
1 2/ N+T
2 2/ N+ ... T
n 2/ N)
1/2, wherein, T
1, T
2t
nfor the observed temperature at each test point place; When several equal temperature T>=25 DEG C, the control signal that indoor thermostat sends " closedown " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and closes; When electric heating constant temperature valve cuts out, and equal temperature T≤20 DEG C of number, and when at least the observed temperature at [N/2] individual test point place is all lower than 18 DEG C, the control signal that described indoor thermostat sends " opening " is to valve positioner, actuator in valve positioner controls electric heating constant temperature valve and opens, and wherein [] represents the part of round numbers; And when not meeting above-mentioned condition, then indoor thermostat does not send control signal.
Wherein, the room temperature that indoor thermostat gathers, is transferred in control device, and shows T respectively by display device
1, T
2t
nand T.
Wherein, described actuator is temperature-sensitive actuator; Described temperature-sensitive actuator comprises thermo-bulb module and transmission component; When valve positioner receives the control signal of " closedown ", heat to the temperature-sensing wax mixture in described thermo-bulb module, make described temperature-sensing wax mixture expand and then drive described transmission component to make described electric heating constant temperature valve be in closed condition; When valve positioner receives the control signal of " opening ", stop heating the temperature-sensing wax mixture in described thermo-bulb module, make described temperature-sensing wax mixture cooling meat and then described transmission component is resetted, and then making described electric heating constant temperature valve be in open mode.
Wherein, the maximum swelling coefficient of described temperature-sensing wax mixture is more than 18%.
Wherein, described control device is also connected with display device.
Wherein, between described indoor thermostat and valve positioner, wireless connections or wired connection can be adopted.
Compared with prior art, the present invention has following beneficial effect:
Indoor thermostat of the present invention can be monitored indoor temperature more comprehensively, truly, and by calculate, can in time by signal feedback to valve positioner.The good stability of actuator of the present invention, highly sensitive, can effectively ensure that equipment well runs, maintain a good state.
Power-supply metering system of the present invention achieves teletransmission and controls, arrearage bidirectional reminding, and malicious owing fee user one key turns off.By control device, achieve heating part gate control preferential, initiatively limit temperature, the overheated early warning of indoor temperature is also closed automatically; And by conjunction with heat energy meter, the private valve opening door of user is monitored, and the address of heat energy meter and electric heating constant temperature valve is unique, can dock with multiple Fare Collection System, realizes charge and management any combination.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wireless remote Energy Saving Control power-supply metering system of embodiment 1.
Fig. 2 is the structural representation of actuator in wireless remote Energy Saving Control power-supply metering system.
Fig. 3 is the matched curve of the temperature-expansion rate of temperature-sensing wax mixture.
Fig. 4 is the matched curve of the temperature-time of temperature-sensing wax mixture.
Detailed description of the invention
Below with reference to specific embodiment, wireless remote Energy Saving Control power-supply metering system of the present invention is further elaborated, has more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Embodiment 1
As shown in Figure 1, the wireless remote Energy Saving Control power-supply metering system described in the present embodiment, comprises indoor thermostat 4, electric heating constant temperature valve 2, valve positioner 3, heat energy meter 7 and control device 5, and described control device 5 is connected with display device 6.What described electric heating constant temperature valve 2 and heat energy meter 7 were installed in heating equipment 1 registers one's residence on hot duct, and described valve positioner 3 is electrically connected with described heat energy meter 7 with described electric heating constant temperature valve 2; Described indoor thermostat 4 is connected with valve positioner 3 and control device 5 respectively; The actuator that described valve positioner 3 comprises receiving control device and is connected with receiving control device; Described receiving control device is connected with indoor thermostat 4, heat energy meter 7 respectively; Described actuator can control electric heating constant temperature valve 2 and be in the state of opening or closing.In the present embodiment, what electric heating constant temperature valve adopted is control valve open in usual, so can avoid, because unexpected power-off causes valve closing or valve of not opening, making frost crack pipe.According to actual conditions, between described indoor thermostat and valve positioner, the mode of wireless connections can be adopted to connect, or adopt the mode of wired connection to connect.
During work, indoor thermostat can test indoor temperature automatically, and by signal transmission to control device and valve positioner.
Wherein, electric heating constant temperature valve adopts stop valve structure, and is control valve open in usual.
When described indoor thermostat only has the situation of 1 temperature sensor, when the temperature t measured is higher than design temperature 1.5 DEG C, the control signal that indoor thermostat sends " closedown " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and closes; When the temperature t measured is lower than design temperature 1.5 DEG C, the control signal that indoor thermostat sends " opening " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and opens.And the room temperature that indoor thermostat gathers, is transferred in control device, and passes through the temperature t of display device display measurement.
When described indoor thermostat comprises N number of temperature sensor for measuring N number of test point place temperature, described N number of temperature sensor is mutually away from setting; And according to heating area, N is the integer between 3 ~ 9; Described indoor thermostat to count samming degree T, described T=(T according to the thermometer measured
1 2/ N+T
2 2/ N+ ... T
n 2/ N)
1/2, wherein, T
1, T
2t
nfor the observed temperature at each test point place; When several equal temperature T>=25 DEG C, the control signal that indoor thermostat sends " closedown " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and closes; When electric heating constant temperature valve cuts out, and equal temperature T≤20 DEG C of number, and when at least the observed temperature at [N/2] individual test point place is all lower than 18 DEG C, the control signal that described indoor thermostat sends " opening " is to valve positioner, actuator in valve positioner controls electric heating constant temperature valve and opens, and wherein [] represents the part of round numbers; And when not meeting above-mentioned condition, then indoor thermostat does not send control signal.The room temperature that described indoor thermostat gathers, is transferred in control device, and shows T respectively by display device
1, T
2t
nand T.In this embodiment, by laying multiple temperature sensor, and preventing the frequent movement causing actuator because of accidental or human factor, ensureing the smooth working of actuator, can meet again simultaneously and maintain room temperature in the comfort zone of setting.
In the present embodiment, described actuator is to another improvements of prior art.Not only operating steadily of the actuator that the present embodiment adopts, and high to the response sensitivity of action.For this reason, the actuator that the present embodiment adopts is temperature-sensitive actuator; Described temperature-sensitive actuator comprises thermo-bulb module and transmission component; As an example of actuator structure, can be shown in Figure 2, described actuator comprises shell 10, the thermo-bulb module 20 be arranged in shell, and the outer setting of thermo-bulb module 20 has inner sleeve 30, and the below of thermo-bulb module 20 is provided with transmission component 40 and return unit 50.Wherein, temperature-sensing wax mixture 21, rod member 22 and thermistor 23 is provided with in described thermo-bulb module 20.When Valve controlling receives the control signal of " closedown ", heat to the temperature-sensing wax mixture in described thermo-bulb module, make described temperature-sensing wax mixture expand and then drive described transmission component action to make described electric heating constant temperature valve be in closed condition; When Valve controlling receives the control signal of " opening ", stop heating the temperature-sensing wax mixture in described thermo-bulb module, make described temperature-sensing wax mixture cooling meat and then described transmission component is resetted, and then making described electric heating constant temperature valve be in open mode.
High in order to ensure the response sensitivity of control signal, the maximum swelling coefficient of described temperature-sensing wax mixture should reach more than 18%, and programming rate is fast.When described maximum swelling coefficient refers to and no longer changed by room temperature to volume, the recruitment of volume is relative to the percentage of initial volume.Specifically, in the present embodiment, by the oxygen-free copper micro mist of the paraffin (such as fusing point is the paraffin of 66 DEG C) of 50wt%, 30wt%, (wherein oxygen content is below 10ppm to described temperature-sensing wax mixture, and particle diameter is less than 1 μm), the 6-dibutylamino-1 of 2wt%, the lauroyl diethanolamine composition of 3,5-triazine-2,4-bis-mercaptan and 18wt%, this temperature-sensing wax mixture is no longer changed by room temperature to a 70 DEG C volume, and maximum swelling coefficient can reach 18.8%.Described temperature-sensing wax mixture preparation method is as follows: by temperature-sensing wax and 6-dibutylamino-1,3,5-triazine-2,4-bis-mercaptan adds in reactor, be heated to 120 ~ 150 DEG C in an inert atmosphere, low whipping speed is stir 30 minutes under the rotating speed of 50 ~ 80r/min, then adds oxygen-free copper micro mist and lauroyl diethanolamine and stirs under the rotating speed of 120 ~ 150r/min and can obtain described temperature-sensing wax mixture in 12 ~ 15 hours.Fig. 3 gives the matched curve of the temperature-expansion rate of temperature-sensing wax mixture, and Fig. 4 is the matched curve of the temperature-time of temperature-sensing wax mixture.In Fig. 3 and Fig. 4, A is the temperature-sensing wax mixture of the present embodiment.And the temperature-sensing wax mixture of B representative is made up of the lauroyl diethanolamine of the paraffin (fusing point is the paraffin of 66 DEG C) of 50wt%, the oxygen-free copper micro mist (wherein oxygen content is below 10ppm, and particle diameter is less than 1 μm) of 30wt% and 20wt%; Its preparation method is as follows: added by temperature-sensing wax in reactor, be heated to 120 ~ 150 DEG C in an inert atmosphere, then add oxygen-free copper micro mist and lauroyl diethanolamine and stir under the rotating speed of 120 ~ 150r/min and can obtain described temperature-sensing wax mixture in 12 ~ 15 hours.And the temperature-sensing wax mixture of C representative is by the paraffin (fusing point is the paraffin of 66 DEG C) of 50wt%, (wherein oxygen content is below 10ppm to the oxygen-free copper micro mist of 30wt%, and particle diameter is less than 1 μm), the 6-dibutylamino-1 of 2wt%, 3, 5-triazine-2, the trioctylamine composition of 4-bis-mercaptan and 18wt%, its preparation method is as follows: by temperature-sensing wax and 6-dibutylamino-1, 3, 5-triazine-2, 4-bis-mercaptan adds in reactor, be heated to 120 ~ 150 DEG C in an inert atmosphere, low whipping speed is stir 30 minutes under the rotating speed of 50 ~ 80r/min, then add oxygen-free copper micro mist and trioctylamine to stir under the rotating speed of 120 ~ 150r/min and can obtain described temperature-sensing wax mixture in 12 ~ 15 hours.As can be seen from Fig. 3 and 4, not only expansion rate is high for the temperature-sensing wax composition A of the present embodiment, and thermal conductivity is good, and programming rate is fast, uses the sensitive response that this temperature-sensing wax composition can ensure control signal.
For the ordinary skill in the art, specific embodiment is just to invention has been exemplary description, and obvious specific implementation of the present invention is not subject to the restrictions described above.
Claims (10)
1. a wireless remote Energy Saving Control power-supply metering system, comprises indoor thermostat, electric heating constant temperature valve, valve positioner, heat energy meter and control device; Described electric heating constant temperature valve and heat energy meter are installed in registers one's residence on hot duct, and described valve positioner is electrically connected with described heat energy meter with described electric heating constant temperature valve; It is characterized in that: described indoor thermostat is connected with valve positioner and control device respectively; The actuator that described valve positioner comprises receiving control device and is connected with receiving control device; Described receiving control device is connected with indoor thermostat, heat energy meter respectively; Described actuator can control electric heating constant temperature valve and be in " opening " or "Off" state.
2. wireless remote Energy Saving Control power-supply metering system according to claim 1, is characterized in that: described electric heating constant temperature valve adopts stop valve structure, and is control valve open in usual.
3. wireless remote Energy Saving Control power-supply metering system according to claim 1, it is characterized in that: described indoor thermostat has 1 temperature sensor, when the temperature t measured is higher than design temperature 1.5 DEG C, the control signal that indoor thermostat sends " closedown " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and closes; When the temperature t measured is lower than design temperature 1.5 DEG C, the control signal that indoor thermostat sends " opening " is to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and opens.
4. wireless remote Energy Saving Control power-supply metering system according to claim 3, is characterized in that: the room temperature that indoor thermostat gathers, and is transferred in control device, and passes through the temperature t of display device display measurement.
5. wireless remote Energy Saving Control power-supply metering system according to claim 1, is characterized in that: described indoor thermostat comprises N number of temperature sensor for measuring N number of test point place temperature, and described N number of temperature sensor is mutually away from setting; According to the integer that heating area N is between 3 ~ 9; Described indoor thermostat to count samming degree T, described T=(T according to the thermometer measured
1 2/ N+T
2 2/ N+ ... T
n 2/ N)
1/2, wherein, T
1, T
2t
nfor the observed temperature at each test point place; When several equal temperature T>=25 DEG C, indoor thermostat sends control signal to valve positioner, and the actuator in valve positioner controls electric heating constant temperature valve and closes; When electric heating constant temperature valve cuts out, and equal temperature T≤20 DEG C of number, and when at least the observed temperature at [N/2] individual test point place is all lower than 18 DEG C, described indoor thermostat sends control signal to valve positioner, actuator in valve positioner controls electric heating constant temperature valve and opens, and wherein [] represents the part of round numbers; And when not meeting above-mentioned condition, then indoor thermostat does not send control signal.
6. wireless remote Energy Saving Control power-supply metering system according to claim 5, is characterized in that: the room temperature that indoor thermostat gathers, and is transferred in control device, and shows T respectively by display device
1, T
2t
nand T.
7. wireless remote Energy Saving Control power-supply metering system according to claim 1, is characterized in that: described actuator is temperature-sensitive actuator; Described temperature-sensitive actuator comprises thermo-bulb module and transmission component; When valve positioner receives the control signal of " closedown ", the temperature-sensing wax mixture in described thermo-bulb module is heated, make described temperature-sensing wax mixture expand and then drive described transmission component to make described electric heating constant temperature valve be in closed condition; When valve positioner receives the control signal of " opening ", stop heating the temperature-sensing wax mixture in described thermo-bulb module, make described temperature-sensing wax mixture cooling meat and then described transmission component is resetted, and then making described electric heating constant temperature valve be in open mode.
8. wireless remote Energy Saving Control power-supply metering system according to claim 7, is characterized in that: the maximum swelling coefficient of described temperature-sensing wax mixture is more than 18%.
9. wireless remote Energy Saving Control power-supply metering system according to claim 1, is characterized in that: described control device is also connected with display device.
10. wireless remote Energy Saving Control power-supply metering system according to claim 1, is characterized in that: between described indoor thermostat and valve positioner, adopts wireless connections or wired connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245617.4A CN104807073B (en) | 2015-05-14 | 2015-05-14 | A kind of wireless remote Energy Saving Control power-supply metering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245617.4A CN104807073B (en) | 2015-05-14 | 2015-05-14 | A kind of wireless remote Energy Saving Control power-supply metering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104807073A true CN104807073A (en) | 2015-07-29 |
| CN104807073B CN104807073B (en) | 2017-10-13 |
Family
ID=53692140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510245617.4A Active CN104807073B (en) | 2015-05-14 | 2015-05-14 | A kind of wireless remote Energy Saving Control power-supply metering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104807073B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016446A (en) * | 2016-05-31 | 2016-10-12 | 许昌东方热力有限公司 | Heat supply metering system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283781A (en) * | 1999-08-08 | 2001-02-14 | 许富昌 | Method for counting consumed calories of user with hot water flowmeter for centralized heating system |
| KR20100052887A (en) * | 2008-11-11 | 2010-05-20 | 주식회사 애강리메텍 | Each room heating system |
| CN201680931U (en) * | 2010-04-23 | 2010-12-22 | 王卫东 | Heat metering valve |
| CN102767867A (en) * | 2012-08-13 | 2012-11-07 | 秦皇岛市荣创科技发展有限公司 | Wireless remote energy-saving control heating metering system |
| CN203131974U (en) * | 2013-01-31 | 2013-08-14 | 天津市热电设计院 | Indoor temperature control system of centralized heat-supply network |
-
2015
- 2015-05-14 CN CN201510245617.4A patent/CN104807073B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283781A (en) * | 1999-08-08 | 2001-02-14 | 许富昌 | Method for counting consumed calories of user with hot water flowmeter for centralized heating system |
| KR20100052887A (en) * | 2008-11-11 | 2010-05-20 | 주식회사 애강리메텍 | Each room heating system |
| CN201680931U (en) * | 2010-04-23 | 2010-12-22 | 王卫东 | Heat metering valve |
| CN102767867A (en) * | 2012-08-13 | 2012-11-07 | 秦皇岛市荣创科技发展有限公司 | Wireless remote energy-saving control heating metering system |
| CN203131974U (en) * | 2013-01-31 | 2013-08-14 | 天津市热电设计院 | Indoor temperature control system of centralized heat-supply network |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016446A (en) * | 2016-05-31 | 2016-10-12 | 许昌东方热力有限公司 | Heat supply metering system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104807073B (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103398417B (en) | Calculate and control method based on the heat death theory control system of indoor/outdoor temperature-difference and heat sharing | |
| CN103884105B (en) | A kind of constant-temperature bathing system | |
| CN101598611B (en) | Heat quantity apportionment measuring method and device for central heating | |
| CN100395486C (en) | Method and device for simultaneously implementing heat regulation and heat measurement | |
| CN101975416A (en) | Method and device for improving accuracy and energy-saving efficiency of 'on-off time-area process' heat allocation system | |
| CN102927621B (en) | Heat metering system and large-area heat metering system, and heat metering allocation method | |
| CN204026839U (en) | A kind of indoor heat supply and temperature control system | |
| CN108954626A (en) | A kind of building cooling supply heating system and its control method | |
| CN102767867A (en) | Wireless remote energy-saving control heating metering system | |
| CN205137798U (en) | Energy -conserving temperature control device | |
| CN103148537A (en) | Concentrated heating system and method | |
| CN103925641A (en) | Heat supply pipe network hydraulic balance automatic adjustment method | |
| US9157645B1 (en) | Apparatus, method, and system for controlling flow of a fluid | |
| CN104807073A (en) | Wireless remote energy-saving control heat supply metering system | |
| Li et al. | An on-off control strategy to reduce return water temperature | |
| CN203835770U (en) | Exhaust fan for automatically adjusting difference of indoor and outer temperatures | |
| CN103185371A (en) | Device and method for energy conservation and heat contribution on vertical single tube cocurrent system | |
| CN204611944U (en) | A kind of central heating Indoor Temperature Ore-controlling Role | |
| CA2803308A1 (en) | Method and device for energy control | |
| CN204735359U (en) | Gondola water faucet device of intelligent control leaving water temperature | |
| CN202442405U (en) | Device for carrying out energy saving and heat apportionment on parallel-flow type system of vertical single tube | |
| CN202709296U (en) | Wireless remote energy-saving control heat metering system | |
| CN204214077U (en) | A kind of earth source heat pump refrigeration and heating system | |
| CN202709297U (en) | Wireless energy-saving constant-temperature control device | |
| CN104676738A (en) | Water heating working condition monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Zheng Inventor before: Zheng Wei Inventor before: Yang Zheng |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |