CN209639277U - The wall-hung boiler of bathroom and heating synchronous operation - Google Patents
The wall-hung boiler of bathroom and heating synchronous operation Download PDFInfo
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- CN209639277U CN209639277U CN201822275365.1U CN201822275365U CN209639277U CN 209639277 U CN209639277 U CN 209639277U CN 201822275365 U CN201822275365 U CN 201822275365U CN 209639277 U CN209639277 U CN 209639277U
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- heat exchanger
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- temperature
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Abstract
The utility model relates to the wall-hung boilers that a kind of bathroom and heating are run simultaneously, it include: controller, First Heat Exchanger, second heat exchanger, mode switch, bypass line, first temperature detecting unit and second temperature detection unit, mode switch is equipped with water inlet, first water outlet and the second water outlet, water inlet with the heat exchange water outlet of First Heat Exchanger for being connected to, first water outlet is connected with heating outlet pipe, second water outlet with the heat exchange water inlet of the second heat exchanger for being connected to, the heat exchange water outlet of second heat exchanger is connected to by the first pipeline with the heat exchange water inlet of First Heat Exchanger, bypass line is equipped with the first regulating valve, first temperature detecting unit is used to detect the water temperature in sanitary outfall pipe, second temperature detection unit is used to detect the water temperature in heating outlet pipe, the wall-hung boiler pair of above-mentioned bathroom and heating synchronous operation The control precision of leaving water temperature is higher, so that bathroom hot water temperature and heating hot water temperature are more easily controlled.
Description
Technical field
The utility model relates to hot water facility technical field, the wall hanging run simultaneously more particularly to a kind of bathroom and heating
Furnace.
Background technique
Wall-hung boiler is a kind of for indoor heating and to provide the hot water facility of domestic hot-water.
Currently, part type is able to achieve while providing heating hot water and bathroom hot water, but tradition in traditional wall-hung boiler
Wall-hung boiler it is lower to the control precision of leaving water temperature, when traditional wall-hung boiler be in and meanwhile heating hot water and bathroom hot water are provided
Mode when, bathroom hot water temperature and heating hot water temperature are not easy to control.
Utility model content
Based on this, it is necessary to for the lower technical problem of control precision of traditional wall-hung boiler to leaving water temperature, provide
A kind of wall-hung boiler of bathroom and heating synchronous operation, so that bathroom hot water temperature and heating hot water temperature are more easily controlled.
To achieve the above object, the utility model provides the wall-hung boiler of a kind of bathroom and heating synchronous operation, and described defends
The wall-hung boiler of bath and heating synchronous operation includes: controller, First Heat Exchanger, the second heat exchanger, mode switch, bypass pipe
Road, the first temperature detecting unit and second temperature detection unit, the heat exchange water inlet of the First Heat Exchanger are connected with heating and return
Water pipe, the mode switch are equipped with water inlet, the first water outlet and the second water outlet, and the water inlet is used for and described first
The heat exchange water outlet of heat exchanger is connected to, and first water outlet is connected with heating outlet pipe, second water outlet be used for
The heat exchange water inlet of second heat exchanger is connected to, and the heat exchange water outlet of second heat exchanger passes through the first pipeline and described the
The heat exchange water inlet of one heat exchanger is connected to, and second heat exchanger is equipped with for connecting the cooling water inlet of bathroom water inlet pipe and being used for
Connect the hot water outlet of sanitary outfall pipe, the heat exchange water outlet of one end of the bypass line and the First Heat Exchanger or described
The connection of second heat exchanger, the other end is connected to the heating outlet pipe, and the bypass line is equipped with the first regulating valve, and described the
One temperature detecting unit is used to detect the water temperature in the sanitary outfall pipe, and the second temperature detection unit is described for detecting
Water temperature in heating outlet pipe, first regulating valve, first temperature detecting unit, the second temperature detection unit and
The mode switch is electrically connected in the controller.
Above-mentioned bathroom and the wall-hung boiler of heating synchronous operation compared with the background art, at least have the advantages that In
In heating-bathroom mode, when the first temperature detecting unit detect the leaving water temperature of sanitary outfall pipe lower than user's setting value, and
When second temperature detection unit detects that the leaving water temperature of heating outlet pipe is higher than user's setting value, controller control first is adjusted
The aperture of valve is turned down, to increase the hot water flow for entering the second heat exchanger, is reduced the hot water flow for entering heating outlet pipe, is made to defend
It bathes leaving water temperature to increase, the decline of heating leaving water temperature；When the first temperature detecting unit detects the leaving water temperature of sanitary outfall pipe
Higher than user's setting value, and when second temperature detection unit detects the leaving water temperature of heating outlet pipe lower than user's setting value,
The aperture that controller controls the first regulating valve tunes up, and to reduce the hot water flow for entering the second heat exchanger, increasing goes out into heating
The hot water flow of water pipe declines sanitary outfall temperature, and heating leaving water temperature increases.Above-mentioned bathroom fortune synchronous with heating as a result,
Capable wall-hung boiler is provided at the same time under the mode of heating hot water and bathroom hot water, can be simultaneously to the temperature of heating hot water and bathroom hot water
Degree is accurately controlled, it is seen then that the leaving water temperature control precision of above-mentioned bathroom and the wall-hung boiler of heating synchronous operation is higher, makes to defend
Bath hot water temperature and heating hot water temperature are more easily controlled.
In one embodiment, the heat exchange water outlet of one end of the bypass line and the First Heat Exchanger or described
The heat exchange water inlet of second heat exchanger is connected to, and the other end is connected to the heating outlet pipe, and first pipeline is equipped with second and adjusts
Valve is saved, second regulating valve and the controller are electrically connected, and the bypass line is also changed in the heat of second heat exchanger
On position between water outlet and second regulating valve with first pipeline connection.
In one embodiment, second regulating valve is water proportioning valve.
In one embodiment, the heat exchange water outlet of the First Heat Exchanger is equipped with for monitoring first heat exchange
The limit temperature controller of the leaving water temperature of device, the limit temperature controller and the controller are electrically connected.
In one embodiment, the bathroom water inlet pipe is equipped with water flow amount detection unit, the water flow amount detection unit
It is electrically connected with the controller.
In one embodiment, the one end of first pipeline far from second heat exchanger and the heating return pipe
Connection, the heating return pipe are equipped with water pump, and the water pump is located at the connection of first pipeline and the heating return pipe
On the downstream position at place, the water pump and the controller are electrically connected.
In one embodiment, the mode switch is electric T-shaped valve,
In one embodiment, first regulating valve is water proportioning valve.
Detailed description of the invention
Fig. 1 is the structural representation of the wall-hung boiler of bathroom described in an embodiment of the present invention and heating synchronous operation
Figure；
Fig. 2 is enlarged structure schematic diagram at the A of the wall-hung boiler of bathroom shown in FIG. 1 and heating synchronous operation.
10, First Heat Exchanger, the 11, second pipeline, 12, limit temperature controller, 20, heating outlet pipe, 21, second temperature detection
Unit, 30, heating return pipe, 31, water pump, the 40, second heat exchanger, 41, bathroom water inlet pipe, 411, water flow amount detection unit, 42,
Sanitary outfall pipe, the 421, first temperature detecting unit, the 43, first pipeline, the 431, second regulating valve, 44, third pipeline, 50, mould
Formula switch, 51, water inlet, the 52, first water outlet, the 53, second water outlet, 60, bypass line, the 61, first regulating valve.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element may be simultaneously present centering elements.On the contrary, not deposited when element is referred to as " directly existing " another element "upper"
In intermediary element." first " described in the utility model, " second ", " third " do not represent specific quantity and sequence, only
Differentiation for title.
As depicted in figs. 1 and 2, the wall-hung boiler of a kind of bathroom and heating synchronous operation, comprising: controller is (in attached drawing not
Show), First Heat Exchanger 10, heating outlet pipe 20, heating return pipe 30, the second heat exchanger 40, bathroom water inlet pipe 41, bathroom go out
Water pipe 42, mode switch 50, bypass line 60, the first temperature detecting unit 421 and second temperature detection unit 21.Second changes
The heat exchange water outlet of hot device 40 is connected to by the first pipeline 43 with the heat exchange water inlet of First Heat Exchanger 10.Heating return pipe 30 with
The heat exchange water inlet of First Heat Exchanger 10 is connected to.Mode switch 50 is equipped with water inlet 51, the first water outlet 52 and the second water outlet
Mouthfuls 53, water inlet 51 is connected to the heat exchange water outlet of First Heat Exchanger 10, wherein water inlet 51 can be changed with First Heat Exchanger 10
Hot water outlet is directly connected to, and can also be connect by the second pipeline 11 with the heat exchange water outlet of First Heat Exchanger 10, heating outlet pipe
20 be connected at the first water outlet 52, the heat exchange water inlet company that the second water outlet 53 passes through third pipeline 44 and the second heat exchanger 40
It is logical.Second heat exchanger 40 is equipped with the hot water for connecting the cooling water inlet of bathroom water inlet pipe 41 and for connecting sanitary outfall pipe 42
Outlet, bathroom water inlet pipe 41 are equipped with water flow amount detection unit 411.One end of bypass line 60 be connected to the second pipeline 11 or with
Third pipeline 44 is connected to or be connected to the first pipeline 43, and the other end is connected to heating outlet pipe 20, and bypass line 60 is equipped with the
One regulating valve 61.First temperature detecting unit 421 is set on sanitary outfall pipe 42, and the first temperature detecting unit 421 is for detecting
Water temperature in sanitary outfall pipe 42, second temperature detection unit 21 are set on heating outlet pipe 20, second temperature detection unit 21
For detecting the water temperature in heating outlet pipe 20.First regulating valve 61, the first temperature detecting unit 421, second temperature detection are single
Member 21, mode switch 50 and water flow amount detection unit 411 are electrically connected in controller.
There are three types of operating modes for user's selection, three kinds of operating modes for above-mentioned bathroom and the wall-hung boiler tool of heating synchronous operation
Respectively (i.e. above-mentioned bathroom and the wall-hung boiler of heating synchronous operation mention bathroom mode, heating mode and heating-bathroom mode simultaneously
For the operating mode of heating hot water and bathroom hot water).
It is connected in one end of bypass line 60 with the second pipeline 11, in the situation that the other end is connected to heating outlet pipe 20
(hereinafter referred to as " situation one "), when user selects heating-bathroom mode, the water inlet 51 of controller control mode switch device 50
It is connected with second outlet, junction quilt of the hot water flowed out at this time from First Heat Exchanger 10 in bypass line 60 and the second pipeline 11
It shunts, hot water enters through bypass line 60 all the way is used as heating heat-exchange hot water in heating outlet pipe 20, another way hot water successively passes through
Enter in the second heat exchanger 40 after mode switch 50 and third pipeline 44 and exchange heat hot water as bathroom, cold water is from bathroom water inlet pipe
41 flow into the second heat exchanger 40, and carry out heat exchange with bathroom heat exchange hot water in the second heat exchanger 40, go out later from bathroom
Water pipe 42 flows out for users to use, which returns to bypass line 60；
It is connected in one end of bypass line 60 with third pipeline 44, in the situation that the other end is connected to heating outlet pipe 20
(hereinafter referred to as " situation two "), when user selects heating-bathroom mode, the water inlet 51 of controller control mode switch device 50
It is connected with second outlet, the hot water flowed out at this time from First Heat Exchanger 10 is successively laggard through the second pipeline 11 and mode switch 50
Enter in third pipeline 44, hot water is split in bypass line 60 and the junction of third pipeline 44, and hot water is through bypass line all the way
60 enter as heating heat-exchange hot water in heating outlet pipe 20, and another way hot water enters in the second heat exchanger 40 to exchange heat as bathroom
Hot water, cold water from bathroom water inlet pipe 41 flow into the second heat exchanger 40 in, and in the second heat exchanger 40 with bathroom exchange heat hot water into
Row heat exchange, later for users to use from the outflow of sanitary outfall pipe 42, which returns to bypass line 60；
It is connected in one end of bypass line 60 with the first pipeline 43, in the situation that the other end is connected to heating outlet pipe 20
(hereinafter referred to as " situation three "), when user selects heating-bathroom mode, the water inlet 51 of controller control mode switch device 50
It is connected with second outlet, the hot water flowed out at this time from First Heat Exchanger 10 is successively through the second pipeline 11, mode switch 50 and the
Enter after three pipelines 44 as bathroom heat exchange hot water in second heat exchanger 40, cold water flows into the second heat exchanger from bathroom water inlet pipe 41
In 40, and heat exchange is carried out with bathroom heat exchange hot water in the second heat exchanger 40, flowed out later from sanitary outfall pipe 42 for user
It using, the bathroom heat exchange hot water flowed out from the second heat exchanger 40 is split in bypass line 60 and the junction of the first pipeline 43,
Bathroom heat exchange hot water enters through bypass line 60 all the way is used as heating heat-exchange hot water in heating outlet pipe 20, the heat exchange of another way bathroom
Hot water enters heating return pipe 30 and comes back in First Heat Exchanger 10.
Above-mentioned bathroom and the wall-hung boiler of heating synchronous operation are in heating-bathroom mode, when the first temperature detecting unit 421
Detect that the leaving water temperature of sanitary outfall pipe 42 is lower than user's setting value, and second temperature detection unit 21 detects that heating is discharged
When the leaving water temperature of pipe 20 is higher than user's setting value, the aperture that controller controls the first regulating valve 61 is turned down, in situation one and feelings
In shape two, the increased flow capacity of bathroom heat exchange hot water, the flow of heating heat-exchange hot water is reduced, and in situation three, bathroom heat exchange heat
The flow of water is constant, but the temperature of bathroom heat exchange hot water increases, and the flow of heating heat-exchange hot water is reduced, three of the above situation
Increase sanitary outfall temperature, heating temperature decline；When the first temperature detecting unit 421 detects the water outlet of sanitary outfall pipe 42
Temperature is higher than user's setting value, and second temperature detection unit 21 detects that the leaving water temperature of heating outlet pipe 20 is set lower than user
When definite value, the aperture that controller controls the first regulating valve 61 is tuned up, in situation one and situation two, the flow of bathroom heat exchange hot water
It reduces, the increased flow capacity of heating heat-exchange hot water, and in situation three, the flow of bathroom heat exchange hot water is constant, but bathroom heat exchange heat
The temperature of water declines, the increased flow capacity of heating heat-exchange hot water, and three of the above situation can be such that sanitary outfall temperature declines, and heating goes out
Coolant-temperature gage increases.Above-mentioned bathroom and the wall-hung boiler of heating synchronous operation provide heating hot water and bathroom hot water at the same time as a result,
Under mode, the temperature of heating hot water and bathroom hot water can be accurately controlled simultaneously, it is seen then that above-mentioned bathroom fortune synchronous with heating
The leaving water temperature control precision of capable wall-hung boiler is higher.
In one embodiment, in situation one and situation two, the first pipeline 43 is equipped with the second regulating valve 431, and second adjusts
It saves valve 431 and controller is electrically connected.Bypass line 60 also swaps out the mouth of a river and the second regulating valve 431 in the heat of the second heat exchanger 40
Between position on be connected to the first pipeline 43.The bathroom heat exchange hot water flowed out from the second heat exchanger 40 is split into two-way, and one
Road bathroom exchanges heat hot water through in the second regulating valve 431 inflow heating return pipe 30, another way bathroom exchanges heat hot water through bypass line
60 flow into heating outlet pipe 20.When the aperture that controller controls the second regulating valve 431 is turned down, flowed through the second regulating valve 431
The bathroom heat exchange hot water flow entered in heating return pipe 30 is reduced, from the bathroom flowed into heating outlet pipe 20 through bypass line 60
Heat exchange hot water flow increases, on the contrary, flowing when the aperture that controller controls the second regulating valve 431 is tuned up through the second regulating valve 431
The bathroom heat exchange hot water flow entered in heating return pipe 30 increases, and the bathroom flowed into heating outlet pipe 20 through bypass line 60 changes
Hot hot water flow is reduced.When the first temperature detecting unit 421 detects sanitary outfall temperature and user in sanitary outfall pipe 42
Bathroom desired temperature is inconsistent, and is or, second temperature detection unit 21 detects that the heating in heating outlet pipe 20 goes out water temperature
When degree is inconsistent with user heating desired temperature, controller controls the first regulating valve 61 according to acquired temperature data respectively
With the aperture of the second regulating valve 431 so that sanitary outfall temperature in sanitary outfall pipe 42 and user's bathroom desired temperature one
Cause, and or, second temperature detection unit 21 detects that heating leaving water temperature and user heating temperature in heating outlet pipe 20 are set
Definite value is consistent.Controller controls the opening size of the first regulating valve 61 and the second regulating valve 431, passes through the first regulating valve 61 and the
The opening size of two regulating valves 431 cooperates to realize to the hot water flow for flowing into the second heat exchanger 40 and flow into heating outlet pipe 20
Hot water flow controlled, and then control sanitary outfall temperature and heating leaving water temperature.It can be seen that above-mentioned setting is further
The wall-hung boiler of above-mentioned bathroom and heating synchronous operation is improved to the control precision of leaving water temperature, so that bathroom hot water temperature and Cai
Warm heat coolant-temperature gage is more easily controlled.
Preferably, the second regulating valve 431 is water proportioning valve.
In one embodiment, the second pipeline 11 is equipped with the limit temperature control for monitoring the leaving water temperature of First Heat Exchanger 10
Device 12, limit temperature controller 12 and controller are electrically connected.When limit temperature controller 12 detects the leaving water temperature of First Heat Exchanger 10
When higher than limiting value, limit temperature controller 12 feeds back stopping signal to controller, and controller controls after receiving stopping signal
Above-mentioned bathroom and the wall-hung boiler of heating synchronous operation stop working.
In one embodiment, the first pipeline 43 is connected to far from one end of the second heat exchanger 40 with heating return pipe 30, heating
Return pipe 30 is equipped with water pump 31, and water pump 31 is located on the downstream position of the junction of the first pipeline 43 and heating return pipe 30,
Water pump 31 and controller are electrically connected.(in attached drawing simultaneously from the bathroom heat exchange hot water of the second heat exchanger 40 outflow and from heating plant
Be not shown) outflow heating hot water collect after be pumped into First Heat Exchanger 10 again by water pump 31, to realize the circulation of hot water
It uses.
Preferably, mode switch 50 is electric T-shaped valve, and certainly, mode switch 50 can also be at least to have three interfaces
Valve.
Preferably, the first regulating valve 61 is water proportioning valve.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. the wall-hung boiler of a kind of bathroom and heating synchronous operation, which is characterized in that the wall of the bathroom and heating synchronous operation
Hanging furnace includes controller, First Heat Exchanger (10), the second heat exchanger (40), mode switch (50), bypass line (60), first
The heat exchange water inlet of temperature detecting unit (421) and second temperature detection unit (21), the First Heat Exchanger (10) is connected with
Heating return pipe (30), the mode switch (50) are equipped with water inlet (51), the first water outlet (52) and the second water outlet
(53), the water inlet (51) with the heat exchange water outlet of the First Heat Exchanger (10) for being connected to, first water outlet
(52) be connected at heating outlet pipe (20), second water outlet (53) be used for the heat exchange of second heat exchanger (40) into
The heat exchange water outlet of mouth of a river connection, second heat exchanger (40) passes through the first pipeline (43) and the First Heat Exchanger (10)
Exchange heat water inlet connection, and second heat exchanger (40) is equipped with for connecting the cooling water inlet of bathroom water inlet pipe (41) and for connecting
The hot water outlet of sanitary outfall pipe (42) is connect, one end of the bypass line (60) and the heat exchange of the First Heat Exchanger (10) go out
The mouth of a river or second heat exchanger (40) connection, the other end are connected to the heating outlet pipe (20), the bypass line (60)
It is equipped with the first regulating valve (61), first temperature detecting unit (421) is for detecting in the sanitary outfall pipe (42)
Water temperature, the second temperature detection unit (21) are used to detect the water temperature in the heating outlet pipe (20), and described first is adjusted
Valve (61), first temperature detecting unit (421), the second temperature detection unit (21) and the mode switch (50)
It is electrically connected in the controller.
2. the wall-hung boiler of a kind of bathroom according to claim 1 and heating synchronous operation, which is characterized in that the bypass pipe
The heat exchange water inlet of the one end on road (60) and the heat exchange water outlet of the First Heat Exchanger (10) or second heat exchanger (40)
Connection, the other end are connected to the heating outlet pipe (20), and first pipeline (43) is equipped with the second regulating valve (431), described
Second regulating valve (431) and the controller are electrically connected, and the bypass line (60) is also in second heat exchanger (40)
It is connected on the position that heat swaps out between the mouth of a river and second regulating valve (431) with first pipeline (43).
3. the wall-hung boiler of a kind of bathroom according to claim 2 and heating synchronous operation, which is characterized in that described second adjusts
Saving valve (431) is water proportioning valve.
4. the wall-hung boiler of a kind of bathroom according to claim 1 and heating synchronous operation, which is characterized in that described first changes
The heat exchange water outlet of hot device (10) is equipped with the limit temperature controller for monitoring the leaving water temperature of the First Heat Exchanger (10)
(12), the limit temperature controller (12) and the controller are electrically connected.
5. a kind of bathroom according to claim 1 and heating synchronous operation wall-hung boiler, which is characterized in that the bathroom into
Water pipe (41) is equipped with water flow amount detection unit (411), and the water flow amount detection unit (411) and the controller are electrically connected.
6. the wall-hung boiler of a kind of bathroom according to claim 1 and heating synchronous operation, which is characterized in that first pipe
Road (43) is connected to far from one end of second heat exchanger (40) with the heating return pipe (30), the heating return pipe (30)
It is equipped with water pump (31), the water pump (31) is located at the junction of first pipeline (43) and the heating return pipe (30)
On downstream position, the water pump (31) and the controller are electrically connected.
7. the wall-hung boiler of a kind of bathroom according to claim 1-6 and heating synchronous operation, which is characterized in that institute
Stating mode switch (50) is electric T-shaped valve.
8. the wall-hung boiler of a kind of bathroom according to claim 1-6 and heating synchronous operation, which is characterized in that institute
Stating the first regulating valve (61) is water proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275365.1U CN209639277U (en) | 2018-12-29 | 2018-12-29 | The wall-hung boiler of bathroom and heating synchronous operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275365.1U CN209639277U (en) | 2018-12-29 | 2018-12-29 | The wall-hung boiler of bathroom and heating synchronous operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209639277U true CN209639277U (en) | 2019-11-15 |
Family
ID=68476840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822275365.1U Withdrawn - After Issue CN209639277U (en) | 2018-12-29 | 2018-12-29 | The wall-hung boiler of bathroom and heating synchronous operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209639277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174408A (en) * | 2019-12-09 | 2020-05-19 | 珠海格力电器股份有限公司 | Gas wall-mounted furnace |
-
2018
- 2018-12-29 CN CN201822275365.1U patent/CN209639277U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174408A (en) * | 2019-12-09 | 2020-05-19 | 珠海格力电器股份有限公司 | Gas wall-mounted furnace |
| CN111174408B (en) * | 2019-12-09 | 2024-12-31 | 珠海格力电器股份有限公司 | A gas wall-mounted boiler |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191115 Effective date of abandoning: 20230512 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191115 Effective date of abandoning: 20230512 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |