CN208998076U - The full premix combustion system of stopping state can be monitored - Google Patents

Abstract

The utility model discloses the full premix combustion systems that one kind can monitor stopping state, including control device, ignition electrode, pressure difference switch and the air filter being sequentially communicated, combustion gas mixing pipe, blower and burner；The side wall of combustion gas mixing pipe is equipped with combustion gas inlet pipe；Ignition electrode and pressure difference switch are electrically connected control device；Pressure difference switch is connected to the inlet end of combustion gas mixing pipe by feedback pipe；Control device includes the display of master board and electrical connection master board.Whether pressure difference switch air pressure of the inlet end of constant testing combustion gas mixing pipe during operation of catching fire is less than preset air pressure, once detecting that the air pressure of the inlet end of combustion gas mixing pipe is less than preset air pressure, pressure difference switch just acts the connection disconnected with control device, after control device detects that pressure difference switch is disconnected with it, just control can entirely monitor stopping state full premix combustion system it is out of service, and block information is fed back to the display of control device, remind user to replace and clean in time filter.

Description

The full premix combustion system of stopping state can be monitored

Technical field

The utility model relates to combustion system fields, more particularly to a kind of full premix combustion system that can monitor stopping state System.

Background technique

Compared to traditional atmospheric burning type, full premix combustion possess it is high-efficient, burning completely, the harmful substances such as CO, NOx Discharge low feature.The burner feature of full premix combustion system is that fire control is more and small, and the haze dust and sand in domestic air is larger, Blocking fire hole is easy when burning, so that combustion power reduces, it is possible to occur burning uneven and burning burner, it is conventional at present Solution be full premix combustion system air intake install air filter.But air filter uses a period of time Afterwards, stop the particle to get off that can block air filter in air, so that the actual circulation area of air filter is reduced, finally Reduce the power of full premix combustion system.It will affect machine service performance when power drops to a certain degree, this When just need that air filter is cleared up or replaced.Because of the air quality difference of different regions and the use rule of different user Rule is different, and the chocking-up degree of air filter is difficult uniformly to determine, it is therefore desirable to which develop a kind of can detect air filter automatically Stopping state full premix combustion system, when detect air filter blocking to a certain extent after it can prompt user to clear up Or replacement air filter.

Utility model content

Technical problem to be solved in the utility model is to provide for a kind of full premix combustion system that can monitor stopping state The air filter preventing clogging up device of system, can automatic monitor filter stopping state, and when plugged filter is to centainly User can be prompted to clear up or replace filter after degree.

To reach the purpose of this utility model, the utility model uses following technical scheme:

A kind of full premix combustion system monitoring stopping state, including control device, ignition electrode, pressure difference switch and according to Air filter, combustion gas mixing pipe, blower and the burner of secondary connection；The side wall of the combustion gas mixing pipe be equipped with combustion gas into Pipe；The ignition electrode and the pressure difference switch are electrically connected the control device；The pressure difference switch passes through described in feedback pipe connection The inlet end of combustion gas mixing pipe；The control device includes master board and the display for being electrically connected the master board.

The above-mentioned full premix combustion system for monitoring stopping state is electrically connected control device by setting pressure difference switch, And the inlet end of combustion gas mixing pipe is connected to by feedback pipe, so that pressure difference switch constant testing combustion gas mixing during operation of catching fire Whether the air pressure of the inlet end of pipe is less than preset air pressure, once detect that the air pressure of the inlet end of combustion gas mixing pipe is less than predetermined gas Pressure, pressure difference switch just acts disconnection and the connection of control device, after control device detects that pressure difference switch is disconnected with it, just The full premix combustion system that control can entirely monitor stopping state is out of service, and whether realize determines air filter in real time Blocking, if detecting, block information to given extent, can be fed back to the display of control device, reminded by air filter blocking User replaces and cleans in time filter, prevents the full premix combustion system that can monitor stopping state from blocking in air filter It is run under situation, guarantees the combustion power that can monitor the full premix combustion system of stopping state.

In one embodiment, the combustion gas inlet pipe is equipped with gas control valve, for controlling the on-off of combustion gas inlet pipe.

In one embodiment, the pressure difference switch includes shell, moving assembly and spring；Be equipped in the shell every Plate, the moving assembly are movably arranged on the partition；The spring be held in the shell and the moving assembly it Between；The cavity of the shell is divided into positive pressure chamber and negative pressure cavity by the partition and the moving assembly, and the negative pressure cavity has negative Mouth is crimped, the negative port is connected to the inlet end of the combustion gas mixing pipe by the feedback pipe；The moving assembly includes The electric contact block intracavitary set on the positive pressure；The positive pressure chamber is equipped with far from the side of the partition and is installed on the first of the shell Electric connecting plate, the second electric connecting plate and third electric connecting plate；First electric connecting plate and the second electric connecting plate are electrically connected the control device； The partition is equipped with the 4th electric connecting plate for being electrically connected the third electric connecting plate towards the side of the positive pressure chamber；Second electricity connects Piece and the 4th electric connecting plate correspond to the electric contact block setting.Assuming that the air pressure of positive pressure chamber is M, the air pressure of negative pressure cavity is P when M-P is small When the action value of pressure difference switch, moving assembly is pressed under the force of a spring on the second electric connecting plate, the connection of the first electric connecting plate Second electric connecting plate, so that pressure difference switch connects control device；When M-P is more than or equal to the action value of pressure difference switch, positive pressure is intracavitary Air pressure overcome the resistance of spring that moving member is pushed to be pressed on the 4th electric connecting plate towards movement in negative pressure cavity, the 4th electric connecting plate and the The connection of one electric connecting plate, so that pressure difference switch disconnects the connection with control device, control device detects that pressure difference switch is disconnected with it After connection, just control can entirely monitor stopping state full premix combustion system it is out of service, prevent that stopping state can be monitored Full premix combustion system is run in the case of air filter blocks, and the pressure difference switch of the structure setting may be implemented to air The accurate detection whether filter blocks.

In one embodiment, the moving assembly further includes the diaphragm on the partition and is set to the film The link block of on piece, the electricity contact block connect the link block.

In one embodiment, the link block, which is adopted, is made from an insulative material.Insulation material is used by setting link block Material is made, and can pass through spring to avoid link block for electrical conduction shell harm users.

In one embodiment, the electric contact block includes the annular solid of the corresponding 4th electric connecting plate setting, is set to institute The connecting rod of the intracorporal mounting blocks of annular and the connection annular solid and mounting blocks is stated, corresponds to described second on the link block Electric connecting plate is equipped with electric feeler lever.

In one embodiment, end face spherical shape of the electric feeler lever close to second electric connecting plate.Pass through setting Electric feeler lever can scratch the second electric connecting plate close to the spherical shape setting in the end face of the second electric connecting plate to avoid electric feeler lever.

In one embodiment, the spring can be held between the diaphragm and the shell.

In one embodiment, the link block wears the diaphragm, and the spring is set in the negative pressure cavity, described Spring pocket is set on the link block.

In one embodiment, the spring is held between the link block and shell.

Detailed description of the invention

Fig. 1 is the structural principle that the full premix combustion system of stopping state is monitored described in an embodiment of the present invention Figure；

Fig. 2 is the structure principle chart of the pressure difference switch in Fig. 1；

Fig. 3 is the installation diagram of the electric contact block and link block in Fig. 2；

Fig. 4 is the graph of relation of the air mass flow of fans entrance and the negative pressure of positive pressure chamber under blower maximum (top) speed.

In figure:

10, control device；11, master board；12, display；20, air filter；30, combustion gas mixing pipe；31, combustion gas Inlet pipe；32, gas control valve；40, blower；50, burner；60, ignition electrode；70, pressure difference switch；71, shell；711, partition； 712, positive pressure chamber；713, positive pressure interface；714, negative pressure cavity；715, negative port；716, the first side wall；72, the first electric connecting plate； 73, the second electric connecting plate；74, third electric connecting plate；75, the 4th electric connecting plate；76, spring；77, locating part；771, limiting slot；772, fixed Position ring；80, moving assembly；81, diaphragm；82, electric contact block；83, annular solid；84, mounting blocks；85, electric feeler lever；86, connecting rod； 87, link block；90, feedback pipe.

Specific embodiment

In the description of the present invention, it should be understood that term " length ", " width ", "top", "bottom", "inner", The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this reality It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific Orientation construction and operation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, " second ", feature can be expressed or Person implicitly includes one or more of the features.

In the description of the present invention, unless otherwise clearly defined and limited, term " connection ", " fixation " should be done extensively Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or integral；It can be mechanical connection, it can also be with It is electrical connection；Can be directly connected, can also indirectly connected through an intermediary, can be connection inside two elements or The interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition Concrete meaning in the present invention.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

It please refers to Fig.1 to Fig.3, the full premix combustion of stopping state can be monitored for one kind of one preferred embodiment of the utility model Burning system, including control device 10, ignition electrode 60, pressure difference switch 70 and the air filter 20 being sequentially communicated, combustion gas mixing Pipe 30, blower 40 and burner 50；The side wall of combustion gas mixing pipe 30 is equipped with combustion gas inlet pipe 31；Ignition electrode 60 and pressure difference switch 70 It is electrically connected control device 10；Pressure difference switch 70 is connected to the inlet end of combustion gas mixing pipe 30 by feedback pipe 90.Control device 10 wraps It includes master board 11 and is electrically connected the display 12 of control panel, when control device 10 detects that pressure difference switch 70 is disconnected with it Afterwards, display 12 is used to show the plugging fault information of air filter 20, and user is reminded to carry out in time air filter 20 Replacement and cleaning.

When the full premix combustion system that above-mentioned anti-clogging can monitor stopping state carries out kindling operation work, combustion gas inlet pipe 31 toward the inner delivery of fuel gas of combustion gas mixing pipe 30, while air filter 20 crosses air filtering, and filtered air is defeated by combustion gas and is mixed Pipe 30 is closed, so that combustion gas and air are uniformly mixed in combustion gas mixing pipe 30 according to a certain percentage；Combustion gas mixing pipe 30 will mix It closes combustion gas and is sent to burner 50, control device 10 controls the air mixture that ignition electrode 60 lights the output of burner 50, air mixture combustion It burns and heat is provided.During operation of catching fire, whether the air pressure of the inlet end of 70 constant testing combustion gas mixing pipe 30 of pressure difference switch is small In preset air pressure, once detecting that the air pressure of the inlet end of combustion gas mixing pipe 30 is less than preset air pressure, pressure difference switch 70 is just acted It disconnects and just controls and entirely may be used after control device 10 detects that pressure difference switch 70 is disconnected with it with the connection of control device 10 The full premix combustion system for monitoring stopping state is out of service, and realizing can determine that whether air filter 20 blocked has in real time Beneficial effect, if detecting, block information to given extent, can be fed back to the display of control device 10 by the blocking of air filter 20 Device 12, prompting user replaces in time and scavenging air filter 20, prevents the full premix combustion system that can monitor stopping state from existing Air filter 20 is run in the case of blocking, and guarantees the combustion power that can monitor the full premix combustion system of stopping state

In order to enable combustion gas and air to be sufficiently mixed in combustion gas mixing pipe 30, combustion gas mixing pipe 30 is preferably venturi Pipe.

Combustion gas inlet pipe 31 is equipped with gas control valve 32, the opening and closing in the channel for controlling combustion gas inlet pipe 31.In other realities It applies in example, balanced valve can also be set on combustion gas inlet pipe 31, be input to combustion gas mixing pipe 30 for regulating gas inlet pipe 31 Flow.

As shown in figure 3, pressure difference switch 70 includes shell 71, moving assembly 80 and spring 76；Partition is equipped in shell 71 711, moving assembly 80 is movably arranged on partition 711；Spring 76 is held between shell 71 and moving assembly 80；Partition 711 and moving assembly 80 cavity of shell 71 is divided into positive pressure chamber 712 and negative pressure cavity 14, positive pressure chamber 712 and negative pressure cavity 14 are distinguished With positive pressure interface 713 and negative port 715, positive pressure interface 713 is connected to the external world；Negative port 715 is connected to by feedback pipe 90 The inlet end of combustion gas mixing pipe 30；Moving assembly 80 includes the removable electric contact block 82 in positive pressure chamber 712；Positive pressure chamber 712 Side far from partition 711 is equipped with the first electric connecting plate 72, the second electric connecting plate 73 and the third electric connecting plate 74 being installed on shell 71； First electric connecting plate 72 and the second electric connecting plate 73 are electrically connected control device 10；Partition 711 is equipped with towards the side of positive pressure chamber 712 and is electrically connected Connect the 4th electric connecting plate 75 of third electric connecting plate 74；Second electric connecting plate 73 and the corresponding electric contact block 82 of the 4th electric connecting plate 75 are arranged.

The working principle of above-mentioned pressure difference switch 70 are as follows: assuming that the air pressure of positive pressure chamber 712 is positive pressure M, the gas of negative pressure cavity 14 Pressure is negative pressure P, and when the value of M-P is less than the action value of pressure difference switch 70, moving assembly 80 makes under the active force of spring 76 Electric contact block 82 is pressed on the second electric connecting plate 73, realizes the connection of the first electric connecting plate 72 and the second electric connecting plate 73, at this moment control device 10 and pressure difference switch 70 connect；When M-P is more than or equal to the action value of pressure difference switch 70, moving assembly 80 is in positive pressure chamber 712 Overcome the resistance of spring mobile towards negative pressure cavity 714 under the active force of air pressure, so that electric contact block 82 is pressed far from the second electric connecting plate 73 In on the 4th electric connecting plate 75, the connection of the first electric connecting plate 72 and the 4th electric connecting plate 75 is realized, at this moment pressure difference switch 70 and control dress It sets 10 to disconnect, after control device 10 detects that pressure difference switch 70 is disconnected with it, controls blower 40 and gas control valve 32 close, so that the full premix combustion system that can entirely monitor stopping state is out of service.

Again specifically, referring to Fig. 4, Fig. 4 is the air mass flow and positive pressure of 40 entrance of blower under 40 maximum (top) speed of blower The graph of relation of the negative pressure of chamber 712,20 jam detection of air filter are that whole process carries out always.Stopping state can be monitored Before full premix combustion system controls the igniting of ignition electrode 60, control device 10 controls blower 40 with the starting of maximum revolving speed, works as air When filter 20 has blocking, air mass flow can reduce, since the withdraw effect negative pressure P of blower can reduce.Q2 in Fig. 4 is installation Air mass flow when completely new air filter, corresponding P2 pressure are maximum.Q1 is allowed minimum air flow amount, corresponding negative pressure Value P1 is to allow minimum value.M-P1 is the action value of pressure difference switch 70.The blocking of air filter 20 causes air mass flow to be less than When Q1, negative pressure makes pressure difference switch 70 disconnect the connection with control device 10, and control device 10 detects that pressure difference switch 70 is disconnected with it After opening, stop blower 40 and rotate, display 12 shows that fault message reminds user.The full premix combustion system of stopping state can be monitored In combustion process of uniting, when air filter 20 has blocking, air inflow is reduced, output power decline, 10 meeting of control device at this time It controls blower 40 and improves revolving speed, when 40 revolving speed of blower is maximum, feeds back the negative pressure value of the inlet end of pipe 90 less than P1, pressure difference is opened It closes the connection that 70 disconnect with control device 10 and controls combustion after control device 10 detects that pressure difference switch 70 disconnects connection Gas control valve 32 switchs, and display 12 shows corresponding failure, and control blower 40 is out of service over time, to realize It prevents to monitor the igniting operation in the case where air filter 20 blocks of the full premix combustion system of stopping state, and reminds use Family is cleared up and is replaced to air filter 20.

Moving assembly 80 further includes the diaphragm 81 on partition 711 and the link block 87 on diaphragm 81, electricity touching Block 82 connects link block 87.When M-P is more than or equal to the action value of pressure difference switch 70, the air pressure of positive pressure chamber 712 overcomes spring Resistance pushes diaphragm 81, and diaphragm 81 drives the direction of electric contact block 82 towards negative pressure cavity 714 to move away second by link block 87 Electric connecting plate 73 and be pressed on the 4th electric connecting plate 75, to realize the disconnection of pressure difference switch 70 and control device 10

As shown in figure 3, electric contact block 82 includes the annular solid 83 of corresponding 4th electric connecting plate 75 setting, in annular solid 83 Mounting blocks 84 and the connecting rod 86 for connecting annular solid 83 and mounting blocks 84, corresponding second electric connecting plate 73, which is equipped with, on link block 87 uses In the electric feeler lever 85 for abutting the second electric connecting plate 73.When annular solid 83 abuts four electric connecting plates 75, the first electric connecting plate 72 connection the Four electric connecting plates 75, pressure difference switch 70 and control device 10 disconnect, and when annular solid 83 is far from four electric connecting plates 75, electric feeler lever 85 is supported The second electric connecting plate 73 is connect, the first electric connecting plate 72 and the connection of the second electric connecting plate 73, pressure difference switch 70 connect control device 10.

Preferably, electric feeler lever 85 close to the second electric connecting plate 73 the spherical shape in end face so that electric feeler lever 85 is not easy to scratch the Two electric connecting plates 73.The quantity of connecting rod 86 is several, and is uniformly distributed around the central axis annular of annular solid 83.

Link block 87 wears diaphragm 81.In the present embodiment, link block 87 is preferably adopted and is made from an insulative material, to avoid even It connects block 87 and passes through spring 76 for 71 harm users of electrical conduction shell.

Referring to Fig. 2, spring 76 can be held between diaphragm 81 and shell 71, can also be held in link block 87 Between shell 71.In the present embodiment, spring 76 is held between diaphragm 81 and shell 71, and is located in negative pressure cavity 14.Into One step, spring 76 is sheathed on link block 87, so that link block 87 is fixed to the installation of spring 76.Spring 76 is corresponded on shell 71 Equipped with locating part 77, locating part 77 is equipped with limiting slot 771, and spring 76 is inserted in limiting slot 771 far from one end of moving assembly 80 It is interior, so that locating part 77 limits the installation of spring 76, the positioning ring being inserted in the cavity of spring 76 is equipped in limiting slot 771 772。

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 (10)

1. the full premix combustion system that one kind can monitor stopping state, which is characterized in that including control device (10), ignition electrode (60), pressure difference switch (70) and the air filter (20) being sequentially communicated, combustion gas mixing pipe (30), blower (40) and burner (50)；The side wall of the combustion gas mixing pipe (30) is equipped with combustion gas inlet pipe (31)；The ignition electrode (60) and the pressure difference switch (70) it is electrically connected the control device (10)；The pressure difference switch (70) is connected to the combustion gas mixing pipe by feedback pipe (90) (30) inlet end；The control device (10) includes the display (12) of master board (11) and the electrical connection control panel.

2. the full premix combustion system according to claim 1 for monitoring stopping state, which is characterized in that the combustion gas into It manages (31) and is equipped with gas control valve (32).

3. the full premix combustion system according to claim 1 for monitoring stopping state, which is characterized in that the pressure difference is opened Closing (70) includes shell (71), moving assembly (80) and spring (76)；Partition (711) are equipped in the shell (71), the shifting Dynamic component (80) are movably arranged on the partition (711)；The spring (76) is held in the shell (71) and the shifting Between dynamic component (80)；The cavity of the shell (71) is divided into positive pressure chamber by the partition (711) and the moving assembly (80) (712) and negative pressure cavity (714), the negative pressure cavity (714) have negative port (715), and the negative port (715) passes through described Feedback pipe (90) is connected to the inlet end of the combustion gas mixing pipe (30)；The moving assembly (80) includes being set to the positive pressure chamber (712) the electric contact block (82) in；The positive pressure chamber (712) is equipped with far from the side of the partition (711) and is installed on the shell (71) the first electric connecting plate (72), the second electric connecting plate (73) and third electric connecting plate (74)；First electric connecting plate (72) and second Electric connecting plate (73) is electrically connected the control device (10)；The partition (711) is equipped with towards the side of the positive pressure chamber (712) It is electrically connected the 4th electric connecting plate (75) of the third electric connecting plate (74)；Second electric connecting plate (73) and the 4th electric connecting plate (75) are equal The corresponding electric contact block (82) is arranged.

4. the full premix combustion system according to claim 3 for monitoring stopping state, which is characterized in that described mobile group Part (80) further includes the link block (87) for being set to the diaphragm (81) on the partition (711) and being set on the diaphragm (81), The electricity contact block (82) connects the link block (87).

5. the full premix combustion system according to claim 4 for monitoring stopping state, which is characterized in that the link block (87) it adopts and is made from an insulative material.

6. the full premix combustion system according to claim 4 for monitoring stopping state, which is characterized in that the electricity contact block It (82) include the annular solid (83) of corresponding 4th electric connecting plate (75) setting, the mounting blocks being set in the annular solid (83) (84) and the connecting rod (86) of the connection annular solid (83) and mounting blocks (84) described the, is corresponded on the link block (87) Two electric connecting plates (73) are equipped with electric feeler lever (85).

7. the full premix combustion system according to claim 6 for monitoring stopping state, which is characterized in that the electricity feeler lever (85) close to the spherical shape in end face of second electric connecting plate (73).

8. the full premix combustion system according to claim 5 for monitoring stopping state, which is characterized in that the spring (76) it is held between the diaphragm (81) and the shell (71).

9. the full premix combustion system according to claim 8 for monitoring stopping state, which is characterized in that the link block (87) it wears the diaphragm (81), the spring (76) is set in the negative pressure cavity (714), and the spring (76) is sheathed on described On link block (87).

10. the full premix combustion system according to claim 5 for monitoring stopping state, which is characterized in that the spring (76) it is held between the link block (87) and shell (71).