CN204611902U - A kind of heating system adjusting device - Google Patents
A kind of heating system adjusting device Download PDFInfo
- Publication number
- CN204611902U CN204611902U CN201520311321.3U CN201520311321U CN204611902U CN 204611902 U CN204611902 U CN 204611902U CN 201520311321 U CN201520311321 U CN 201520311321U CN 204611902 U CN204611902 U CN 204611902U
- Authority
- CN
- China
- Prior art keywords
- heating system
- pipe
- water inlet
- water
- adjusting device
- 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.)
- Expired - Fee Related
Links
Landscapes
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The utility model discloses a kind of heating system adjusting device, comprise and be arranged on water inlet pipe between heat supply network and indoor heating system and outlet pipe, to form heating loop; Described heating system adjusting device also comprises controller, indoor temperature transmitter disposed in the interior and outdoor temperature sensor disposed in the outdoor, described water inlet pipe is provided with electric controlled regulating valve, and described indoor temperature transmitter, described outdoor temperature sensor and described electric controlled regulating valve all communicate to connect with described controller.The beneficial effects of the utility model are: by regulating the aperture of the electric control valve be arranged on heating water main thus making automatically to regulate to indoor heating system supply water temperature to realize.This heating system adjusting device can carry out manufacturing and testing with factory condition by designing requirement.Have intelligentized control method, fully automatic operation, energy-conservation feature, realize unmanned, safe and reliable, and application prospect is very wide.
Description
Technical field
The utility model relates to heating engineering technical field, is specifically related to a kind of heating system adjusting device.
Background technology
At 50.0 kilowatts and following building, the automatic adjustment not considering hot-fluid is allowed through technical and economic proof for heating heat load calculation.For equipment such as similar air-treatment unit, Fresh air handling units, its heater design has electric control valve, does not also consider the automatic adjustment of hot-fluid.Current China project item generally only considers the resistance balance between each indoor heating system in parallel at each constructure heating entrance; By regulating radiator thermostat valve to reach the object maintaining indoor temperature, the method increases investment and operational management cost.
Utility model content
The purpose of this utility model is to provide a kind of heating system adjusting device, be arranged on constructure heating system entry place and heat supply center, it supplies according to outside air temperature and heat supply network, the change of backwater water temperature regulates Indoor environment heating system to exert oneself, to ensure indoor room design temperature, to overcome prior art above shortcomings.
The purpose of this utility model is achieved through the following technical solutions:
A kind of heating system adjusting device, comprises and is arranged on water inlet pipe between heat supply network and indoor heating system and outlet pipe, to form heating loop; Described heating system adjusting device also comprises controller, indoor temperature transmitter disposed in the interior and outdoor temperature sensor disposed in the outdoor, described water inlet pipe is provided with electric controlled regulating valve, and described indoor temperature transmitter, described outdoor temperature sensor and described electric controlled regulating valve all communicate to connect with described controller.
Further, the utility model also comprises the first heat-conducting medium temperature sensor be arranged in described water inlet pipe and the second heat-conducting medium temperature sensor be arranged in described outlet pipe, and described first heat-conducting medium temperature sensor and described second heat-conducting medium temperature sensor all communicate to connect with described controller.
Further, the utility model also comprises anti-freeze pipe, and one end of described anti-freeze pipe is connected on described outlet pipe on the position of the water inlet of described outlet pipe, and the other end of described anti-freeze pipe extends to blowoff basin.
Further, the utility model also comprises recycling water utilization pipe, one end of described recycling water utilization pipe is connected on described outlet pipe, and the other end of described recycling water utilization pipe is connected on the pipeline of described water inlet pipe between described electric controlled regulating valve and the delivery port of described water inlet pipe.
Preferably, described recycling water utilization pipe is connected by water water jet device with between described water inlet pipe.
Further, the utility model also comprises pressure of return water riser, one end of described pressure of return water riser is connected on described outlet pipe, the other end of described pressure of return water riser is connected on the pipeline of described water inlet pipe between described electric controlled regulating valve and the delivery port of described water inlet pipe, and described pressure of return water riser is provided with pressure of return water lift unit.
Further, the utility model also comprises filter and is arranged on each filter pressure table of described filter both sides, and described filter and described filter pressure table are installed on recycling water utilization pipe or are installed on described pressure of return water riser.
Further, the utility model also comprises heating heat metering assembly, described heating heat metering assembly comprises the inflow temperature detecting unit, leaving water temperature detecting unit and the flow measurement cell that communicate to connect with described controller respectively, described inflow temperature detecting unit and described flow measurement cell are successively set in described water inlet pipe along the flow direction of heat-conducting medium, and described leaving water temperature detecting unit is arranged on described outlet pipe.Flow measurement cell is flowmeter, and inflow temperature detecting unit and leaving water temperature detecting unit are thermometer.
Further, the utility model also comprises dirt separator, and described dirt separator is arranged on described water inlet pipe, and is positioned at the updrift side of described flow measurement cell.
Further, the utility model also comprises two dirt separator Pressure gauges of the upstream and downstream being separately positioned on described dirt separator, and two described dirt separator Pressure gauges are arranged on described water inlet pipe near described dirt separator.
The beneficial effects of the utility model are: 1) met each Indoor environment heating system different designs supply water temperature by heating system adjusting device, reduced the requirement of the temperature difference, for example hospital, nursery etc., the heating supply water temperature that Specification Design requires it lower.2) without heat exchanger heat transfer, without the need to small pump, cost saving, system is simple, takes up an area little, reduces energy consumption.
By regulating the aperture of the electric control valve be arranged on heating water main thus making automatically to regulate to indoor heating system supply water temperature to realize.This heating system adjusting device can carry out manufacturing and testing with factory condition by designing requirement.Have intelligentized control method, fully automatic operation, energy-conservation feature, realize unmanned, safe and reliable, and application prospect is very wide.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the utility model one embodiment;
Fig. 2 is the system architecture schematic diagram of the another embodiment of the utility model;
Fig. 3 is the system architecture schematic diagram of the another embodiment of the utility model.
In figure, 1, heat supply network; 2, water inlet pipe; 3, outlet pipe; 4, heating system; 5, anti-freeze pipe; 6, recycling water utilization pipe; 71, water water jet device; 72, electric controlled regulating valve; 73, filter; 731, filter pressure table; 74, flow measurement cell; 741, inflow temperature detecting unit; 742, leaving water temperature detecting unit; 75, dirt separator; 751, dirt separator Pressure gauge; 76, indoor temperature transmitter; 77, outdoor temperature sensor; 78, the first heat-conducting medium temperature sensor; 79, the second heat-conducting medium temperature sensor; 8, controller; 9, self-power type pressure regulating valve; 10, multifunctional pump; 11, self-operated type differential pressure regulator; 12, heating system.
Detailed description of the invention
Embodiment one
As shown in Figure 1, a kind of heating system 4 adjusting device, comprises and is arranged on water inlet pipe 2 between heat supply network 1 and indoor heating system 4 and outlet pipe 3, to form heating loop; Described heating system 4 adjusting device also comprises controller 8, indoor temperature transmitter 76 disposed in the interior and outdoor temperature sensor 77 disposed in the outdoor, described water inlet pipe 2 is provided with electric controlled regulating valve 72, and described indoor temperature transmitter 76, described outdoor temperature sensor 77 and described electric controlled regulating valve 72 all communicate to connect with described controller 8.Indoor temperature transmitter 76 and outdoor temperature sensor 77 respectively using indoor temperature and outdoor temperature as communication signal transmissions to controller 8, controller 8 regulates the aperture of electric controlled regulating valve 72 according to the signal of communication received, thus automatically regulates the output of heat supply network 1 pair of indoor heating system 4.Realize intelligentized control method, unmanned, fully automatic operation, energy-conservation, safe and reliable to operation.
The utility model also comprises the first heat-conducting medium temperature sensor 78 be arranged in described water inlet pipe 2 and the second heat-conducting medium temperature sensor 79 be arranged in described outlet pipe 3, and described first heat-conducting medium temperature sensor 78 and described second heat-conducting medium temperature sensor 79 all communicate to connect with described controller 8.Using the first heat-conducting medium temperature sensor 78 and the second heat-conducting medium temperature sensor 79 as the signal input part automatically controlled, automatic control of the present utility model can be carried out in the temperature level of outlet pipe 3 in the temperature of water inlet pipe 2 and heat-conducting medium flexibly according to heat-conducting medium, make automatic control of the present utility model meet the requirement of daily practicality more flexibly and more.
The utility model also comprises anti-freeze pipe 5, and one end of described anti-freeze pipe 5 is connected on described outlet pipe 3 on the position of the water inlet of described outlet pipe 3, and the other end of described anti-freeze pipe 5 extends to blowoff basin.Anti-freeze pipe 5 is set, ensure that heat-conducting medium can flow out through anti-freeze pipe 5 after entering heating system 4 from water inlet pipe 2, namely ensure that heat-conducting medium is in the state continuing flowing, thus prevent heat-conducting medium from freezing due to mercury dropped, thus it also avoid heat-conducting medium and freeze the rear damage to the utility model and heating system 4, especially heat-conducting medium adopts water, can expand after water condensation, anti-freeze pipe 5 is adopted effectively to prevent water condensation, prevent the expansion damage of process of setting heating system 4 of the present utility model further, extend the service life of the utility model and heating system 4.
After heat-conducting medium flows through heating system 4, pressure can reduce, if heat-conducting medium is directly imported water inlet pipe 2 by pressure of return water riser, may occur that the heat-conducting medium in water inlet pipe 2 flows into pressure of return water riser, thus affect normal operation of the present utility model, therefore, in order to prevent the pressure needing the heat-conducting medium promoted in recycling water utilization pipe 6 of this problem, one end of described pressure of return water riser is connected on described outlet pipe 3, the other end of described pressure of return water riser is connected on the pipeline of described water inlet pipe 2 between described electric controlled regulating valve 72 and the delivery port of described water inlet pipe 2, and described pressure of return water riser installs back water pressure lift unit.This pressure of return water lift unit comprises multifunctional pump 10, conveniently check that multifunctional pump 10 mixes the pressure of the heat-conducting medium before and after water, in multifunctional pump 10 both sides, a multifunctional pump pressure sensor is respectively set, also two multifunctional pump pressure sensors and multifunctional pump 10 can be communicated to connect with controller 8, improve automaticity of the present utility model further.For improving multifunctional pump 10 reliability of operation, simplification system and being of compact construction, multifunctional pump 10 is designed to the single water pump being with bi-motor, a motor in bi-motor uses, and another motor is for subsequent use.The water inlet of multifunctional pump 10 goes out to be provided with the electro connecting pressure gauge communicated to connect with multifunctional pump controller, this electro connecting pressure gauge is for detecting the pressure in pressure of return water riser, and pass through the setting of multifunctional pump controller, the pressure corresponding to pressure of return water riser during the work of multifunctional pump 10 can be controlled, namely when the pressure in pressure of return water riser is lower than setting, multifunctional pump controller sends signal to multifunctional pump 10, multifunctional pump 10 works, when the pressure in pressure of return water riser reaches a certain setting, namely now can mix with the heat transfer medium of water inlet pipe, multifunctional pump 10 does not work.
The backwater flowed out from the delivery port of heating system 4 contains impurity, in order to remove this impurity, the utility model also comprises filter 73, filter 73 can adopt full-automatic filter, Semiautomatic filter and manual filter, when adopting Semiautomatic filter, also respectively be provided with a filter pressure table 731 in described filter 73 both sides, described filter 73 and described filter pressure table 731 are installed on described pressure of return water riser.Filter pressure table 731 can select Pressure gauge, two filter pressure tables 731 are set, the impurity levels that the screen pack of filter 73 adheres to can be judged by the pressure gap on two filter pressure tables 731, when the impurity that screen pack adheres to is more, the pressure that the filter pressure table 731 being arranged on upstream detects is greater than the pressure of the filter pressure table 731 be arranged on down, and attendant judges whether by the difference of observing the reading of two filter pressure tables 731 screen pack changing filter 73; Equally also the signal output part of two filter pressure tables 731 and controller 8 can be communicated to connect, filter 73 alarm communicated to connect with controller 8 is set, when the pressure gap of two filter pressure tables 731 exceeds the setting range that controller 8 allows, alarm is started, sound and/or light warning, prompt facility attendant changes the screen pack of filter 73.
The utility model also comprises heating heat metering assembly, described heating heat metering assembly comprises the inflow temperature detecting unit 741, leaving water temperature detecting unit 742 and the flow measurement cell 74 that communicate to connect with described controller 8 respectively, described inflow temperature detecting unit 741 and described flow measurement cell 74 are successively set in described water inlet pipe 2 along the flow direction of heat-conducting medium, and described leaving water temperature detecting unit 742 is arranged on described outlet pipe 3.The heat-conducting medium temperature in water pipe 3 is detected in real time by leaving water temperature detecting unit 742, the heat-conducting medium temperature in water inlet pipe 2 is detected in real time by inflow temperature detecting unit 741, the heat-conducting medium flow of heating system 4 is flowed through by flow measurement cell 74 metering, thus controller 8 can calculate the thermal losses of the heat-conducting medium flowing through heating system 4, namely the heating amount of the user of heating system 4 is installed, thus charging can be carried out according to heating amount, charging way is reasonable, is conducive to of the present utility model applying.
Impurity is contained from the high temperature heat conducting medium of heat supply network 1, in order to remove this impurity, its flowing with heat-conducting medium is avoided to be trapped in water inlet pipe 2, heating system 4 and outlet pipe 3, the utility model also comprises dirt separator 75, described dirt separator 75 is arranged on described water inlet pipe 2, and is positioned at the updrift side of described flow measurement cell 74.
Two dirt separator Pressure gauges, 751, two described dirt separator Pressure gauges 751 that the utility model also comprises the upstream and downstream being separately positioned on described dirt separator 75 are arranged on described water inlet pipe 2 near described dirt separator 75 ground.The principle that two dirt separator Pressure gauges 751 are set and the technique effect brought thereof and two filter pressure tables 731 away from and the technique effect that brings similar, therefore to repeat no more.The present embodiment is applicable to single building Heating water inlet.
Separately, in order to control the break-make of corresponding medium transport pipeline, water inlet pipe 2, outlet pipe 3, anti-freeze pipe 5, pressure of return water riser are provided with valve, valve is one or more in stop valve, ball valve and check-valves.In order to ensure automatic control performance of the present utility model, the control end of above-mentioned valve and described controller 8 are communicated to connect.
The system of the present embodiment is simple, easy to adjust.Recirculation volume is larger, and supply backwater temperature difference is lower, and systemic circulation effect is better.As multifunctional pump 10 lift cannot be coordinated with indoor heating system resistance, also can self-power type pressure regulating valve 9 be set before multifunctional pump 10 on pressure of return water riser or static balancing valve runs under running parameter to realize multifunctional pump.
Self-power type pressure regulating valve 9 ensures that the pressure before or after valve maintains setting value, support controlled system inner stream flow from main regulation, meet the variable-flow operation requirement of household metering heat supply, eliminate interfering with each other of regulating between each user.
Embodiment two
As shown in Figure 2, the difference of the present embodiment and embodiment one is:
Described filter 73 and described filter pressure table 731 are installed on recycling water utilization pipe 6.The utility model also comprises recycling water utilization pipe 6, one end of described recycling water utilization pipe 6 is connected on described outlet pipe 3, and the other end of described recycling water utilization pipe 6 is connected on the pipeline of described water inlet pipe 2 between described electric controlled regulating valve 72 and the delivery port of described water inlet pipe 2.When the temperature of the water flowed out from the delivery port of heating system 4 can not be very low, especially some occasion (nursery, hospital etc.) under, when requiring that having lower heating supplies water, the temperature of the fin of heating system 4 can not be too high, the heat-conducting medium also had surplus heat flowed out from the delivery port of heating system 4 flows through to mix with the high temperature heat conducting medium in water inlet pipe 2 after recycling water utilization pipe 6 flows into water inlet pipe 2 and heats for heating system 4 afterwards, thus again the waste heat of the heat-conducting medium that the delivery port from heating system 4 flows out is used under meeting the requirement of low heating supply water temperature, save the energy.
Be connected by water water jet device 71 between described recycling water utilization pipe 6 with described water inlet pipe 2.Water water jet device 71 is stable, failure rate is low; There is provided circulation pressure reduction, resistance is little, and economize on electricity, fundamentally changes existing expenditure and pressure mode; Each branched pipe is installed, the hydraulic equilibrium effect to pipe network can be played, prevent hydraulic misadjustment.When a lot of user stops heat, flow system flow decline can affect the mass ratio of induced-to-inducing air of water water jet device 71, and now water circulating pump starts; When heating demand is large, water circulating pump can be stopped transport automatically.The present embodiment is applicable to single building Heating water inlet.
In like manner, can on recycling water utilization pipe 6 mounted valve, control the flowing of medium in recycling water utilization pipe 6 with this or do not flow.
Embodiment three
As shown in Figure 3, the difference of the present embodiment and embodiment two is:
For keeping heating system 12 to run under stationary conditions, water inlet pipe 2, outlet pipe 3 need to establish self-operated type differential pressure regulator 11.The present embodiment is applicable to heat supply center or heat supply initial station etc.
Self-operated type differential pressure regulator 11, is made up of a manual modulation valve group and an automatic balancing valve group; The effect of manual modulation valve group be setting flow, the effect of automatic balancing valve group be maintain constant flow, with ensure valve forward and backward between pressure reduction maintain setting value.
Claims (10)
1. a heating system adjusting device, is characterized in that, comprises and is arranged on water inlet pipe between heat supply network and indoor heating system and outlet pipe, to form heating loop;
Described heating system adjusting device also comprises controller, indoor temperature transmitter disposed in the interior and outdoor temperature sensor disposed in the outdoor, described water inlet pipe is provided with electric controlled regulating valve, and described indoor temperature transmitter, described outdoor temperature sensor and described electric controlled regulating valve all communicate to connect with described controller.
2. heating system adjusting device according to claim 1, it is characterized in that, also comprise the first heat-conducting medium temperature sensor be arranged in described water inlet pipe and the second heat-conducting medium temperature sensor be arranged in described outlet pipe, described first heat-conducting medium temperature sensor and described second heat-conducting medium temperature sensor all communicate to connect with described controller.
3. heating system adjusting device according to claim 1 and 2, it is characterized in that, also comprise anti-freeze pipe, one end of described anti-freeze pipe is connected on described outlet pipe on the position of the water inlet of described outlet pipe, and the other end of described anti-freeze pipe extends to blowoff basin.
4. heating system adjusting device according to claim 1 and 2, it is characterized in that, also comprise recycling water utilization pipe, one end of described recycling water utilization pipe is connected on described outlet pipe, and the other end of described recycling water utilization pipe is connected on the pipeline of described water inlet pipe between described electric controlled regulating valve and the delivery port of described water inlet pipe.
5. heating system adjusting device according to claim 4, is characterized in that, described recycling water utilization pipe is connected by water water jet device with between described water inlet pipe.
6. heating system adjusting device according to claim 4, it is characterized in that, also comprise pressure of return water riser, one end of described pressure of return water riser is connected on described outlet pipe, the other end of described pressure of return water riser is connected on the pipeline of described water inlet pipe between described electric controlled regulating valve and the delivery port of described water inlet pipe, and described pressure of return water riser is provided with pressure of return water lift unit.
7. heating system adjusting device according to claim 6, it is characterized in that, also comprise filter and each filter pressure table being arranged on described filter both sides, described filter and described filter pressure table are installed on recycling water utilization pipe or are installed on described pressure of return water riser.
8. heating system adjusting device according to claim 1 and 2, it is characterized in that, also comprise heating heat metering assembly, described heating heat metering assembly comprises the inflow temperature detecting unit, leaving water temperature detecting unit and the flow measurement cell that communicate to connect with described controller respectively, described inflow temperature detecting unit and described flow measurement cell are successively set in described water inlet pipe along the flow direction of heat-conducting medium, and described leaving water temperature detecting unit is arranged on described outlet pipe.
9. heating system adjusting device according to claim 8, is characterized in that, also comprise dirt separator, and described dirt separator is arranged on described water inlet pipe, and is positioned at the updrift side of described flow measurement cell.
10. heating system adjusting device according to claim 9, it is characterized in that, also comprise two dirt separator Pressure gauges of the upstream and downstream being separately positioned on described dirt separator, two described dirt separator Pressure gauges are arranged on described water inlet pipe near described dirt separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311321.3U CN204611902U (en) | 2015-05-14 | 2015-05-14 | A kind of heating system adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311321.3U CN204611902U (en) | 2015-05-14 | 2015-05-14 | A kind of heating system adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204611902U true CN204611902U (en) | 2015-09-02 |
Family
ID=53964459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520311321.3U Expired - Fee Related CN204611902U (en) | 2015-05-14 | 2015-05-14 | A kind of heating system adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204611902U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318393A (en) * | 2015-10-22 | 2016-02-10 | 北京志诚宏业智能控制技术有限公司 | Intelligent heat-supply system based on indoor temperature |
| CN106440017A (en) * | 2016-09-09 | 2017-02-22 | 黑龙江建筑职业技术学院 | Heat-supply engineering operating regulation and control virtual simulation training platform |
| CN107339778A (en) * | 2017-07-11 | 2017-11-10 | 上海九谷智能科技有限公司 | A kind of HVAC energy consumption control system based on state recognition |
-
2015
- 2015-05-14 CN CN201520311321.3U patent/CN204611902U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318393A (en) * | 2015-10-22 | 2016-02-10 | 北京志诚宏业智能控制技术有限公司 | Intelligent heat-supply system based on indoor temperature |
| CN106440017A (en) * | 2016-09-09 | 2017-02-22 | 黑龙江建筑职业技术学院 | Heat-supply engineering operating regulation and control virtual simulation training platform |
| CN106440017B (en) * | 2016-09-09 | 2019-04-30 | 黑龙江建筑职业技术学院 | Heat Supply Engineering operation regulation virtual emulation training platform |
| CN107339778A (en) * | 2017-07-11 | 2017-11-10 | 上海九谷智能科技有限公司 | A kind of HVAC energy consumption control system based on state recognition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205352721U (en) | Heat pump set comprehensive properties testing system | |
| CN203395967U (en) | Heating station energy-saving device with dual-adjustment function | |
| CN204611902U (en) | A kind of heating system adjusting device | |
| CN109268929A (en) | A kind of energy saving in heating system regulating system and method | |
| CN206669841U (en) | Self-priming balances heating system | |
| CN209782785U (en) | distributed building hydraulic balance adjusting system | |
| CN201539927U (en) | Stringing type of self-balanced central air-conditioning water pump system | |
| CN204478354U (en) | A kind of ice-storage air-conditioning control system | |
| CN104296372A (en) | Domestic normal pressure heat pump water heater and control method thereof | |
| CN106152366A (en) | A kind of season self-adaption separated new wind heat recovery equipment of extract air | |
| CN209801590U (en) | User distributed heat supply energy-saving device | |
| CN203586393U (en) | Heat balancing unit and control device thereof | |
| CN111878889A (en) | Heat exchange station system capable of reducing fluctuation of flow of heat supply main pipe network | |
| CN207280009U (en) | A kind of new Regional Energy secondary pumping system | |
| CN209782784U (en) | geothermal and hanging piece mixed heat supply type adjusting system | |
| CN105509120B (en) | The heating unit and control method in multi partition greenhouse | |
| CN205137939U (en) | Water heater water flow control device | |
| CN205425150U (en) | Water conservancy bleeder mechanism with heat accumulation function | |
| CN204574338U (en) | Independent temperature-humidity control air-conditioner water system | |
| CN100370192C (en) | Electric heating machine | |
| CN211526550U (en) | Regulation control system for ensuring constant temperature of tail end water supply | |
| CN210320247U (en) | Heating system | |
| CN210688557U (en) | Energy dynamic balance air conditioning system | |
| CN207123038U (en) | A kind of differential pressure type air conditioner energy conservation control system | |
| CN202734044U (en) | Water mixing module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20200514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |