CN215863774U

CN215863774U - Integrated direct-fired machine of central air conditioning cold water heat pump unit

Info

Publication number: CN215863774U
Application number: CN202121230476.6U
Authority: CN
Inventors: 高源�
Original assignee: Huai'an Comprehensive Energy Service Co ltd
Current assignee: Huai'an Comprehensive Energy Service Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-02-18
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a central air-conditioning cold water heat pump unit integrated direct-fired machine, which relates to the field of direct-fired machines and comprises a combustion chamber, wherein a water tank is coated outside the combustion chamber, an isolation component is arranged inside the lower end of the water tank, a fuel conveying pipe which penetrates through the bottom of the water tank and the isolation component and extends into the combustion chamber is arranged below the water tank, supporting legs are fixedly arranged at the bottom of the water tank, a circulating collection box is arranged on one side of the water tank, the water tank is completely coated outside the combustion chamber, the fuel conveying pipe conveys gas such as natural gas or liquid fuel into the combustion chamber for combustion so as to heat water stored in the water tank, the heating efficiency is high, an anti-explosion mechanism is arranged inside the fuel conveying pipe, the situation that flame spreads into the fuel conveying pipe when the internal air pressure of the combustion chamber is abnormal is avoided, the anti-explosion mechanism inside the fuel conveying pipe can block the fuel conveying pipe when meeting high pressure, isolating and extinguishing fire, and avoiding explosion.

Description

Integrated direct-fired machine of central air conditioning cold water heat pump unit

Technical Field

The utility model relates to the field of direct-fired machines, in particular to an integrated direct-fired machine of a central air-conditioning cold water heat pump unit.

Background

The gas direct-fired machine is a machine which adopts combustible gas to directly burn and provides refrigeration, heating and sanitary hot water. The direct-fired machine uses natural gas, diesel oil and other fuels as fuel energy sources, and most of the widely used direct-fired machines use natural gas as fuel. The direct-fired engine comprises a high-temperature generator, a low-temperature generator, a high-temperature exchanger, a low-temperature exchanger, an evaporator, a condenser and the like.

Among the prior art, the fuel supply pipeline of direct-fired machine is because of supplying fuel demand and being linked together in the combustion chamber, and when appearing unusual high pressure in the combustion chamber, the flame under high pressure and the high pressure easily gets into and appears exploding in the fuel supply pipeline, and water cavity water cycle uses in the direct-fired machine, appears the incrustation scale easily, and difficult washing influences the availability factor.

Therefore, it is necessary to provide an integrated direct combustion engine of a central air-conditioning cold water heat pump unit to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an integrated direct-fired machine of a central air-conditioning cold water heat pump unit, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a central air conditioning cold water heat pump set integration direct-fired machine, includes the combustion chamber, the outside cladding of combustion chamber has the water tank, the inside isolation component that is provided with of lower extreme of water tank, the below of water tank is provided with the fuel delivery pipe that passes water tank bottom and isolation component and stretch into in the combustion chamber, the fixed supporting leg that is provided with in bottom of water tank, one side of water tank is provided with the circulation collecting box, the inside filter pulp layer that is provided with of lower extreme of circulation collecting box, the inside intercommunication of lower extreme of circulation collecting box has the suction unit, suction unit tip is provided with the pipeline that feeds through in water tank bottom one side, and the position of pipeline intercommunication water tank is located the below of isolation component, the inside intercommunication water tank lower extreme in upper end of circulation collecting box, and the opposite that the intercommunication position corresponds pipeline intercommunication water tank position.

Preferably, the fuel conveying pipe is internally provided with an explosion-proof mechanism, the explosion-proof mechanism comprises an explosion-proof pipeline fixed on the inner wall of the fuel conveying pipe, and the explosion-proof pipeline is of a circular tubular structure.

In this embodiment, the water tank wraps up in the outside of combustion chamber completely, thereby fuel delivery pipe carries gas such as natural gas or liquid fuel to the combustion chamber in thereby the water of burning storage in to the water tank heats, the heating efficiency is high, fuel delivery pipe inside is provided with explosion-proof mechanism, flame stretching to the inside condition of fuel delivery pipe appears when avoiding the inside atmospheric pressure of combustion chamber to take place to be unusual, the explosion-proof mechanism of fuel delivery pipe inside can carry out the shutoff to fuel delivery pipe when meeting high pressure, keep apart and put out a fire, avoid explosion phenomenon.

Preferably, the one end of explosion-proof pipeline has the first mouth of pipe, and the other end has the second mouth of pipe, the inside of explosion-proof pipeline is provided with the metal sprue, the open-ended one end of fuel delivery pipe is kept away from to the metal sprue is the hemisphere, and hemispherical one side is provided with the arc wall.

It should be noted that, when high pressure occurs in the fuel delivery pipe, the high pressure pushes the metal blocking block to move towards one side of the second pipe orifice so as to block the second pipe orifice, and thus, flame is prevented from flowing into the fuel delivery pipe.

Preferably, first mouth of pipe sets up in the one end that explosion-proof pipeline is close to the fuel delivery pipe opening part, first orificial diameter is greater than the diameter of second mouth of pipe and metal sprue, the diameter of metal sprue is greater than the orificial diameter of second, the outer lane department of metal sprue is provided with the magnetism of activity laminating on explosion-proof pipeline inner wall and inhales the ring, the magnetism is inhaled and is passed through connecting rod fixed connection between ring and the metal sprue, the outer lane and the magnetism of metal sprue inhale and leave the ring channel between the ring channel, first orificial diameter is less than explosion-proof pipeline's internal diameter.

Further, when the fuel conveying pipe is normally used, the magnetic attraction ring connected with the periphery of the metal blocking block is kept at the middle position of the explosion-proof pipeline through the repulsive force of the first magnetic sheet and the second magnetic sheet, and the communication of the pipelines in the fuel conveying pipe is ensured.

Preferably, the inner walls of the two ends of the explosion-proof pipeline are respectively and fixedly provided with a first magnetic sheet and a second magnetic sheet which are far away from the magnetic attraction ring, and the explosion-proof pipeline is provided with a plurality of groups of magnetic sheets up and down in the fuel conveying pipe.

When the fuel conveying pipe is blocked, the fuel continuously conveyed into the fuel conveying pipe is compressed in the fuel conveying pipe to form high pressure, the high pressure pushes the metal blocking block to move to one side of the first pipe orifice, and the pressure generated by the fuel pushes the metal blocking block to act on the arc-shaped groove to drive the metal blocking block to rotate in the explosion-proof pipeline, so that the blockage at the inner part of the fuel conveying pipe is facilitated to be dredged, the use is convenient, the magnetic attraction ring is kept in the middle of the explosion-proof pipeline through the repulsive force of the first magnetic sheet and the second magnetic sheet, the metal blocking block can tend to reset towards the middle of the explosion-proof pipeline after the pressure generated by the fuel pushes the metal blocking block to move, thus, the metal blocking block reciprocates up and down in a small range, a pressurizing and pressure releasing reciprocating state is formed in the fuel conveying pipe, the dredging in the fuel conveying pipe is assisted, and the explosion-proof pipeline is provided with a plurality of groups, the explosion-proof performance is good.

Preferably, the isolation component comprises an upper partition plate, a lower partition plate and a filtering cotton plate which are sequentially arranged from top to bottom, and a space is reserved among the upper partition plate, the lower partition plate and the filtering cotton plate.

Wherein, the last baffle that sets up from top to bottom, lower baffle has the effect that must block the transmission of isolation component upper portion water heat to the water tank in below, it subsides to help impurity such as incrustation scale in the aquatic to subside when the temperature degree is lower, it should explain, during the in-service use, the water temperature of isolation component below is still higher, but the water in the water tank of isolation component below has the difference of a temperature, go up the height and go to the bottom, help the incrustation scale of the aquatic of isolation component below to subside, the incrustation scale that produces in the aquatic of isolation component top passes through the through-hole at first and gets into the small opening, the pressure that the incrustation scale produced expands to prop the small opening and falls into the inside collection of lower extreme of water tank after opening, when no incrustation scale, the lower extreme of small opening is closed, prevent to subside the incrustation scale backward flow in the bottom, have the good effect of collecting the incrustation scale.

Preferably, the upper partition plate and the lower partition plate are both provided with through holes which penetrate through from top to bottom, and the through holes in the upper partition plate and the through holes in the lower partition plate are distributed in a staggered manner.

In the embodiment, the through holes on the upper partition plate and the through holes on the lower partition plate are distributed in a staggered manner, so that the scale can descend through the staggered through holes step by step without backflow.

Preferably, the surface of the filtering cotton plate is provided with a leak hole which penetrates through the filtering cotton plate up and down, the leak hole is of a conical groove body structure, and the lower end of the leak hole is in a closed shape.

It should be noted that when the scale collected at the bottom of the water tank needs to be cleaned, the suction unit can be opened, the suction unit sucks the water and the scale at the bottom of the water tank into the circulating collection tank together, the water and the scale are filtered by the filtering cotton layer in the circulating collection tank, the scale is left at the upper part of the circulating collection tank, the water passes through the filtering cotton layer and enters the bottom of the water tank again through the pipeline at the end part of the suction unit, the purpose of circulating filtration is achieved, the filtering effect is good, and the suction unit can use devices such as a water pump.

The utility model has the technical effects and advantages that:

the utility model relates to a central air-conditioning cold water heat pump unit integrated direct combustion engine, which comprises a combustion chamber, wherein a water tank is coated outside the combustion chamber, an isolation component is arranged inside the lower end of the water tank, a fuel conveying pipe which penetrates through the bottom of the water tank and the isolation component and extends into the combustion chamber is arranged below the water tank, supporting legs are fixedly arranged at the bottom of the water tank, a circulating collection box is arranged at one side of the water tank, the water tank is completely coated outside the combustion chamber, the fuel conveying pipe conveys gas or liquid fuel such as natural gas and the like into the combustion chamber to be combusted so as to heat water stored in the water tank, the heating efficiency is high, an anti-explosion mechanism is arranged inside the fuel conveying pipe, the situation that flame spreads into the fuel conveying pipe when the air pressure inside the combustion chamber is abnormal is avoided, the anti-explosion mechanism inside the fuel conveying pipe can block the fuel conveying pipe when meeting high pressure, the fire is isolated and extinguished, and the explosion phenomenon is avoided;

according to the integrated direct-fired machine of the central air-conditioning cold water heat pump unit, when high pressure occurs in the fuel conveying pipe, the metal blocking block is pushed by the high pressure to move towards one side of the second pipe orifice so as to block the second pipe orifice, and flame is prevented from flowing into the fuel conveying pipe;

the utility model relates to an integrated direct combustion engine of a central air-conditioning cold water heat pump unit, when a fuel conveying pipe is blocked, fuel continuously conveyed into the fuel conveying pipe is compressed in the fuel conveying pipe to form high pressure, the high pressure pushes a metal blocking block to move to one side of a first pipe orifice, and the pressure generated by the fuel pushes the metal blocking block to act on an arc-shaped groove to drive the metal blocking block to rotate in an explosion-proof pipeline, so that the blockage part in the fuel conveying pipe is favorably dredged, the use is convenient, and the magnetic attraction ring is kept in the middle of the explosion-proof pipeline through the repulsive force of a first magnetic sheet and a second magnetic sheet, the metal blocking block can tend to reset towards the middle of the explosion-proof pipeline after the pressure generated by the fuel pushes the metal blocking block to move, so that the metal blocking block reciprocates up and down in a small range to form a reciprocating state of pressurization and pressure release in the fuel conveying pipe, the auxiliary fuel conveying pipe is internally dredged, and the explosion-proof pipelines are provided with a plurality of groups, so that the explosion-proof performance is good.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention.

In the figure: 1. a combustion chamber; 2. a water tank; 3. an isolation component; 4. supporting legs; 5. a fuel delivery pipe; 6. A circulating collection box; 7. a filter cotton layer; 8. an aspiration unit; 9. an explosion-proof pipe; 10. a first nozzle; 11. a magnetic attraction ring; 12. a first magnetic sheet; 13. a connecting rod; 14. a metal block; 15. a second magnetic sheet; 16. an arc-shaped slot; 17. a second orifice; 18. a through hole; 19. an upper partition plate; 20. a lower partition plate; 21. a filter cotton plate; 22. and (4) a leak hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a central air-conditioning cold water heat pump unit integrated direct combustion engine as shown in figures 1-3, which comprises a combustion chamber 1, wherein a water tank 2 is coated outside the combustion chamber 1, an isolation component 3 is arranged inside the lower end of the water tank 2, a fuel conveying pipe 5 which penetrates through the bottom of the water tank 2 and the isolation component 3 and extends into the combustion chamber 1 is arranged below the water tank 2, supporting legs 4 are fixedly arranged at the bottom of the water tank 2, a circulating collection box 6 is arranged on one side of the water tank 2, a filtering cotton layer 7 is arranged inside the lower end of the circulating collection box 6, an suction unit 8 is communicated inside the lower end of the circulating collection box 6, a pipeline communicated with one side of the bottom of the water tank 2 is arranged at the end part of the suction unit 8, the pipeline communicated with the water tank 2 is positioned below the isolation component 3, the inside of the upper end of the circulating collection box 6 is communicated with the inside the lower end of the water tank 2, and the communicated position corresponds to the opposite to the position of the pipeline communicated with the water tank 2.

The inside of fuel delivery pipe 5 is provided with explosion-proof mechanism, and explosion-proof mechanism is including fixing explosion-proof pipeline 9 on fuel delivery pipe 5 inner wall, and explosion-proof pipeline 9 is the pipe column structure.

In this embodiment, water tank 2 wraps completely in the outside of combustion chamber 1, thereby fuel delivery pipe 5 carries gas such as natural gas or liquid fuel to combustion chamber 1 in the burning water of storage heats in the water tank 2, the heating efficiency is high, fuel delivery pipe 5 is inside to be provided with explosion-proof mechanism, flame appears when avoiding 1 inside atmospheric pressure of combustion chamber to take place unusually and stretches to the inside condition of fuel delivery pipe 5, fuel delivery pipe 5 can carry out the shutoff to fuel delivery pipe 5 when meeting the high pressure in the explosion-proof mechanism of fuel delivery pipe 5 inside, keep apart and put out a fire, avoid the explosion phenomenon.

Explosion-proof pipeline 9's one end has first mouth of pipe 10, and the other end has second mouth of pipe 17, and explosion-proof pipeline 9's inside is provided with metal sprue 14, and metal sprue 14 keeps away from fuel delivery pipe 5 open-ended one end and is the hemisphere, and the hemispherical one side is provided with arc wall 16.

It should be noted that when high pressure occurs in fuel delivery pipe 5, the high pressure pushes metal block 14 to move toward the side of second nozzle 17 to block second nozzle 17, thereby preventing flame from flowing into fuel delivery pipe 5.

First mouth of pipe 10 sets up in the one end that explosion-proof pipeline 9 is close to fuel delivery pipe 5 opening part, the diameter of first mouth of pipe 10 is greater than the diameter of second mouth of pipe 17 and metal sprue 14, the diameter of metal sprue 14 is greater than the diameter of second mouth of pipe 17, the outer lane department of metal sprue 14 is provided with the magnetism of activity laminating on explosion-proof pipeline 9 inner wall and inhales ring 11, inhale through connecting rod 13 fixed connection between ring 11 and the metal sprue 14 for magnetism, the ring channel is left between ring 11 inner circle is inhaled to the outer lane of metal sprue 14 and magnetism, the diameter of first mouth of pipe 10 is less than explosion-proof pipeline 9's internal diameter.

Further, when the fuel conveying pipe 5 is in normal use, the magnetic attraction ring 11 connected to the periphery of the metal blocking block 14 is kept at the middle position of the explosion-proof pipeline 9 through the repulsive force of the first magnetic sheet 12 and the second magnetic sheet 15, so that the communication of the pipelines in the fuel conveying pipe 5 is ensured.

The inner walls of two ends of the explosion-proof pipeline 9 are respectively and fixedly provided with a first magnetic sheet 12 and a second magnetic sheet 15 which are far away from the magnetic attraction ring 11, and the explosion-proof pipeline 9 is provided with a plurality of groups up and down in the fuel conveying pipe 5.

When the fuel conveying pipe 5 is blocked, the fuel continuously conveyed into the fuel conveying pipe 5 is compressed to form high pressure in the fuel conveying pipe 5, the high pressure pushes the metal block 14 to move to one side of the first pipe orifice 10, and the pressure generated by the fuel pushes the metal block 14 to act on the arc-shaped groove 16 to drive the metal block 14 to rotate in the anti-explosion pipeline 9, so that the blockage inside the fuel conveying pipe 5 is facilitated to be dredged, the use is convenient, the magnetic attraction ring 11 is kept in the middle of the anti-explosion pipeline 9 through the repulsive force of the magnetic attraction ring and the first magnetic sheet 12 and the second magnetic sheet 15, the metal block 14 tends to return to the middle of the anti-explosion pipeline 9 after the pressure generated by the fuel pushes the metal block 14 to move, thus, the metal block 14 reciprocates up and down in a small range, a pressurizing and pressure releasing reciprocating state is formed in the fuel conveying pipe 5 to assist the dredging inside the fuel conveying pipe 5, and the explosion-proof pipelines 9 are provided with a plurality of groups, so that the explosion-proof performance is good.

The isolation component 3 comprises an upper partition plate 19, a lower partition plate 20 and a filtering cotton plate 21 which are sequentially arranged up and down, and a space is reserved between the upper partition plate 19, the lower partition plate 20 and the filtering cotton plate 21.

Wherein, the last baffle 19 that sets up from top to bottom, lower baffle 20 have and certainly block the effect that keeps apart the heat transfer of 3 upper portions water to the water tank 2 in below, it subsides to help impurity such as incrustation scale in the aquatic to subside when the temperature degree is lower, it should be noted that, during the in-service use, the temperature of the below of isolation component 3 is still higher, but the water in the water tank 2 below of isolation component 3 has a difference of temperature, go up the high lower bottom, help the incrustation scale of the aquatic of isolation component 3 below to subside, the incrustation scale that produces in the aquatic of isolation component 3 top passes through the through-hole 18 at first and gets into the small opening 22, the pressure that the incrustation scale produced expands to prop the small opening 22 and falls into the inside collection of lower extreme of water tank 2 after opening, when no incrustation scale, the lower extreme of small opening 22 is closed, prevent the incrustation scale backward flow that subsides in the bottom, has good effect of collecting the incrustation scale.

The upper partition plate 19 and the lower partition plate 20 are both provided with through holes 18 which penetrate through from top to bottom, and the through holes 18 on the upper partition plate 19 and the through holes 18 on the lower partition plate 20 are distributed in a mutually staggered manner.

In this embodiment, the through holes 18 of the upper partition plate 19 and the through holes 18 of the lower partition plate 20 are distributed in a staggered manner, so that the scale can descend through the staggered through holes 18 step by step without flowing back.

The surface of the filtering cotton plate 21 is provided with a leak hole 22 which penetrates up and down, the leak hole 22 is of a cone groove structure, and the lower end of the leak hole 22 is of a closed shape.

It should be noted that, when the scale collected at the bottom of the water tank 2 needs to be cleaned, the suction unit 8 can be opened, the suction unit 8 sucks the water and the scale at the bottom of the water tank 2 into the circulating collection box 6 together, the water and the scale are filtered by the filter cotton layer 7 in the circulating collection box 6, the scale is left at the upper part of the circulating collection box 6, the water enters the bottom of the water tank 2 again through the filter cotton layer 7 and the pipeline at the end of the suction unit 8, the purpose of circulating filtration is achieved, the filtering effect is good, and the suction unit 8 can use devices such as a water pump.

The working principle is as follows: water tank 2 wraps up in the outside of combustion chamber 1 completely, thereby fuel delivery pipe 5 carries gas such as natural gas or liquid fuel to combustion chamber 1 in the burning water of storage heats in the water tank 2, the heating efficiency is high, fuel delivery pipe 5 inside is provided with explosion-proof mechanism, flame appears when avoiding 1 inside atmospheric pressure of combustion chamber to take place unusually and stretches to the inside condition of fuel delivery pipe 5, fuel delivery pipe 5 inside explosion-proof mechanism can seal up fuel delivery pipe 5 when meeting the high pressure, keep apart to put out a fire, avoid explosion phenomenon.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a central air conditioning cold water heat pump set integration direct-fired machine, includes combustion chamber (1), its characterized in that: the combustion chamber (1) is coated with a water tank (2), an isolation component (3) is arranged inside the lower end of the water tank (2), a fuel conveying pipe (5) which penetrates through the bottom of the water tank (2) and the isolation component (3) and extends into the combustion chamber (1) is arranged below the water tank (2), supporting legs (4) are fixedly arranged at the bottom of the water tank (2), a circulating collection box (6) is arranged on one side of the water tank (2), a filtering cotton layer (7) is arranged inside the lower end of the circulating collection box (6), an suction unit (8) is communicated inside the lower end of the circulating collection box (6), a pipeline communicated with one side of the bottom of the water tank (2) is arranged at the end part of the suction unit (8), the pipeline communicated with the water tank (2) is positioned below the isolation component (3), and the inside of the upper end of the circulating collection box (6) is communicated with the inside of the lower end of the water tank (2), and the communication position corresponds to the opposite surface of the position of the pipeline communication water tank (2).

2. The integrated direct-fired machine of the central air-conditioning cold water heat pump unit according to claim 1, characterized in that: the fuel delivery pipe is characterized in that an anti-explosion mechanism is arranged inside the fuel delivery pipe (5), the anti-explosion mechanism comprises an anti-explosion pipeline (9) fixed on the inner wall of the fuel delivery pipe (5), and the anti-explosion pipeline (9) is of a circular tubular structure.

3. The integrated direct-fired machine of the central air-conditioning cold water heat pump unit according to claim 2, characterized in that: the one end of explosion-proof pipeline (9) has first mouth of pipe (10), and the other end has second mouth of pipe (17), the inside of explosion-proof pipeline (9) is provided with metal sprue (14), fuel delivery pipe (5) open-ended one end is the hemisphere in metal sprue (14), and hemispherical one side is provided with arc wall (16).

4. The integrated direct-fired machine of the central air-conditioning cold water heat pump unit according to claim 3, characterized in that: first mouth of pipe (10) set up in the one end that is close to fuel delivery pipe (5) opening part in explosion-proof pipeline (9), the diameter of first mouth of pipe (10) is greater than the diameter of second mouth of pipe (17) and metal sprue (14), the diameter of metal sprue (14) is greater than the diameter of second mouth of pipe (17), ring (11) are inhaled through connecting rod (13) fixed connection to the outer lane department of metal sprue (14) is provided with the magnetism of activity laminating on explosion-proof pipeline (9) inner wall, inhale through connecting rod (13) fixed connection between ring (11) and metal sprue (14) to magnetism, the outer lane and the magnetism of metal sprue (14) inhale and leave the ring channel between ring (11) inner circle, the diameter of first mouth of pipe (10) is less than the internal diameter of explosion-proof pipeline (9).

5. The integrated direct-fired machine of the central air-conditioning cold water heat pump unit according to claim 4, characterized in that: the inner walls of the two ends of the anti-explosion pipeline (9) are respectively and fixedly provided with a first magnetic sheet (12) and a second magnetic sheet (15) which are mutually repelled and far away from the magnetic attraction ring (11), and the anti-explosion pipeline (9) is provided with a plurality of groups up and down in the fuel conveying pipe (5).

6. The integrated direct-fired machine of the central air-conditioning cold water heat pump unit according to claim 1, characterized in that: the isolation assembly (3) comprises an upper partition plate (19), a lower partition plate (20) and a filtering cotton plate (21) which are sequentially arranged from top to bottom, and a distance is reserved between the upper partition plate (19), the lower partition plate (20) and the filtering cotton plate (21).

7. The integrated direct-fired machine of central air-conditioning cold water heat pump unit according to claim 6, characterized in that: through holes (18) which penetrate through from top to bottom are formed in the upper partition plate (19) and the lower partition plate (20), and the through holes (18) in the upper partition plate (19) and the through holes (18) in the lower partition plate (20) are distributed in a staggered mode.

8. The integrated direct-fired machine of central air-conditioning cold water heat pump unit according to claim 6, characterized in that: the surface of the filtering cotton plate (21) is provided with a leak hole (22) which penetrates up and down, the leak hole (22) is of a cone groove body structure, and the lower end of the leak hole (22) is of a closed shape.