CN105547012B

CN105547012B - Heat exchanger for communicating heating pipe and pipe

Info

Publication number: CN105547012B
Application number: CN201610093001.4A
Authority: CN
Inventors: 张伟; 张冲
Original assignee: Shandong Power Exchange Heat Exchanger Co Ltd
Current assignee: Shandong power exchange heat exchanger Co., Ltd.
Priority date: 2016-02-20
Filing date: 2016-02-20
Publication date: 2020-03-24
Anticipated expiration: 2036-02-20
Also published as: CN105547012A

Abstract

A heating pipe tube UNICOM heat exchanger, many heating pipe lumen are intercommunicated, the straight pipe of heating pipe intercommunication is inserted into the tube UNICOM welding hole on many heating pipes to weld and connect in series UNICOM in order, or draw the tube to weld and connect the lumen of many heating pipes directly through the wall, or seal the small notch of many heating pipe tube wall through the closed welding of the communicating plate of the notch, or many heating pipe notch tube wall and adjacent tube notch tube wall weld and connect with the tube wall directly, form the hot fluid circulation heat transfer flow path; at least one cold water heat exchange pipe is arranged in the pipe cavities of the plurality of heating pipes; or the cold water heat exchange tube is held into a multi-circle bent tube and is integrally inserted into the tube cavities of the plurality of heating tubes to be integrally communicated. The invention has large heat exchange area, advanced technical process and compact structure, can heat and radiate and can be changed into hot water, the pipeline welding joints are reduced, water leakage is not easy to occur, and the product has long service life.

Description

Heat exchanger for communicating heating pipe and pipe

The invention relates to the technical field of heating ventilation, in particular to an office and household heating heat exchanger for exchanging hot water by using a heating system as a heat source, and particularly relates to a heating pipe and pipe communicated heat exchanger made of stainless steel or copper pipes.

Background

The applicant's patent application entitled "a counterflow heat exchanger", patent No. 200520081141.7, and publication No. CN2783244Y on No. 03/17/2005, which is not fully described in the specification, is missing the necessary technical features of "end closure or heat supply pipe opening, heat absorption pipe communicating elbow connection", etc., and the absence of these technical features inevitably makes the claims unclear, so that those skilled in the art cannot implement them. The defect that the heat absorption pipe 3 cannot be inserted into the inner cavity of the heat supply pipe 2 exists without writing necessary technical characteristics in the specification, and the connection modes of the heat supply pipe 2, the heat absorption pipe 3, the communicating pipe 8 and other parts are welded or screwed or connected in other modes without writing, so that the specification disclosure is not sufficient; also, the absence of a technical feature may cause ambiguity or conflict in the interpretation of a claim; the communicating pipe 8 or the supporting member 5 is also described by being visually seen from fig. 1 to 4 in the structure of the drawings, and the heating pipe 2 is connected to and not communicated with the communicating pipe 8. The disclosed prior art counter-flow heat exchangers suffer from technical drawbacks or small heat exchange area, low thermal efficiency, etc., which cannot be achieved by a person skilled in the art.

The applicant filed an application on 11/02/2003, the name of the utility model: "heat exchanger dispels the heat", patent number: 200320106748.7, publication number: cn2660461.y discloses a plurality of communicating pipes 6 for communicating the header with the header, and the heat absorbing pipes 4 in some of the communicating pipes are of an integral plug-in structure or a split plug-in structure. The present invention is different from the welding connection of vertical pipe and transverse pipe, i.e. the different pipe diameters of vertical pipe and transverse pipe are welded and connected with each pipe cavity to form fluid circulation channel, so that it can save the material of connecting component, header orifice plate and header shell plate, etc. and its structure is different. In the prior art, the communicating pipe 6 is welded with the header orifice plate, the orifice of the communicating pipe 6 and the header orifice plate are in an I-shaped horizontal plane and are in an open state, and integral insertion or split insertion of the heat absorbing pipe 4 is conveniently implemented. The prior art is not suitable for the heating of the current low-temperature heat source, and the heat exchanger is eliminated because the heat exchange area is small, the effect is poor and hot water cannot be continuously exchanged for bathing.

Disclosure of Invention

The invention aims to solve the defects and provides a heating pipe and pipe communicated heat exchanger, so that the heat exchange area is large, a fluid channel of a cold water heat exchange pipe is held into a plurality of bent pipes to be integrally inserted or held into a plurality of bent pipes to be separately inserted into the inner cavities of a plurality of heating pipes, adjacent bent pipes are adopted to be communicated in a butt welding mode, cold fluid single-channel or double-channel exchange of the inner pipe of the heat exchanger enhances the heat transfer rate, the heat exchange efficiency is improved, and the heat exchange effect is maximized.

In order to achieve the purpose, the invention adopts the technical scheme that:

a heating pipe and tube communicating heat exchanger, comprising: a plurality of heating pipes, end plugs, cold water heat exchange pipes and pipe joint parts are assembled and welded to form a radiator-shaped heat exchanger; the heat exchanger part is provided with a pipe joint welding port for facilitating the installation and welding of the pipe joint; or the parts of the heat exchanger are not provided with pipe joint welding ports; a heating inlet pipe joint III, a heating outlet pipe joint IV, a cold water inlet pipe joint I and a cold water outlet pipe joint II are welded and communicated with a pipe joint welding port on a heat exchanger part to form a shell-side hot fluid channel or a pipe-side cold fluid channel; the method is characterized in that: the left pipe wall of one end of the side pipe of the plurality of heating pipes is provided with a pipe joint welding port, and the right pipe wall of the other end of the side pipe of the plurality of heating pipes is provided with a pipe communication welding hole; the left pipe wall at one end of a plurality of adjacent heating pipes and the right pipe wall at the other end are provided with pipe communication welding holes which are convenient for welding communication; the pipe walls without holes between the plurality of heating pipes and the adjacent pipes are provided with support pieces for supporting and fixedly connecting the adjacent plurality of heating pipes to strengthen the stability of the left and right adjacent pipes, or the support pieces are not arranged between the plurality of heating pipes and the adjacent pipes; or the left and right pipe walls of the two ends of the plurality of heating pipes are provided with pipe communicated welding holes; or the left and right side pipe walls of the two ends of the plurality of heating pipes are provided with small notches; the pipe cavities of the plurality of heating pipes are mutually communicated; the pipe walls of the openings of the welding holes communicated with the plurality of heating pipe pipes are stretched and turned over towards the inner cavity or the outer wall or not stretched and turned over; the heating communication straight pipes are sequentially inserted into pipe communication welding holes on a plurality of heating pipes to be welded and connected in series, or the pipe cavities of the plurality of heating pipes are directly welded and connected through wall pulling pipes, or small notches on the pipe walls of the plurality of heating pipes are sealed and welded and blocked through notch communication plates, or the pipe walls of the notches of the plurality of heating pipes are directly welded and connected with the pipe walls of the notches of the adjacent pipes through pipe walls, so that a hot fluid circulation heat transfer flow channel is formed; at least one cold water heat exchange pipe is arranged in the pipe cavities of the plurality of heating pipes; the cold water heat exchange tubes are inserted into the tube cavities of the plurality of heating tubes, penetrate through the tube cavities of the heating communication straight tubes or the tube cavities of the wall pull tubes in each tube cavity, and are butted and communicated in the tube cavities of the plurality of heating tubes through the bent tubes; or the cold water heat exchange pipe is held into a multi-circle bent pipe to be integrally inserted into the pipe cavities of the plurality of heating pipes, and the cold water heat exchange pipe spans from the cavity of the small notch to be integrally communicated with the cavity of each heating pipe; the cold water heat exchange tubes form a cold fluid one-single-tube path or two-double-tube path or a plurality of multi-tube path circulating heat absorption flow channels in the cavities of the plurality of heating tube cavities; the inlet and outlet ends of the cold water heat exchange tube are respectively communicated with a cold water inlet pipe joint I and a cold water outlet pipe joint II in a welding way; the pipe joint is hermetically welded and connected with the pipe wall or the end closure plate at the welding hole of the pipe joint on the heat exchanger component; the heating inlet pipe joint III and the heating outlet pipe joint IV are respectively connected with an end closure plate or a pipe wall at the welding hole of the upper pipe joint of the multiple heating pipe components in a sealing welding way and communicated with the pipe cavity for circulation; end plugging plates are welded at the end pipe orifices of the plurality of heating pipes; the end plugging plate is used for sealing, welding and plugging the end openings of the plurality of heating pipe shells; the pipe joint welding hole is formed in the side pipe end blocking plate, so that the side pipe end blocking plate is convenient to install, weld and fixedly connect with a pipe joint; a plurality of heating pipes which are connected with the heat exchanger in a welding way form a shell-side hot fluid channel or an inner pipe cold water heat exchange pipe tube-side cold fluid channel.

The invention has large heat exchange area, the fluid channel of the cold water heat exchange tube is held into a plurality of bent tubes to be integrally inserted or held into a plurality of bent tubes to be separately inserted into the tube cavities of a plurality of heating tubes to be communicated by the butt welding of the bent tubes, the technical process is advanced, the structure is compact, the invention is unique and novel, the heating tube type heat exchanger can heat and radiate heat and can exchange hot water, the welding joints of the cold and hot fluid pipelines are reduced or reduced, the water leakage is not easy to happen in the prior art, and.

Drawings

Fig. 1 is an external view schematically showing the communication between a plurality of heating pipes 1 through a wall-pulling pipe 15 according to the present invention.

Fig. 2 is an external schematic view showing the communication between a plurality of heating pipes 1 through heating communication straight pipes 2 according to the present invention.

Fig. 3 is a structural schematic diagram of the present invention in which a cold water heat exchange tube 3 communicated between a plurality of heating pipes 1 through a wall-pulling tube 15 and held as a bent tube is separately inserted into a pipe cavity bent tube butt-welding 4 of the plurality of heating pipes 1.

Fig. 4 is a structural schematic diagram of the present invention in which a plurality of heating pipes 1 are connected with a cold water heat exchange pipe 3 through a communication straight pipe 2 and are separately inserted into a plurality of heating pipes 1 and a pipe cavity elbow pipe butt welding 4 is connected.

Fig. 5 is a schematic structural view of the end closure plate 11 of the present invention being a flat-end concave-shaped end closure plate.

Fig. 6 is a schematic top view of the multiple heating pipes 1 communicating with each other through the wall pulling pipe 15.

Fig. 7 is a structural diagram of the outward flanging structure of the pressing plane platform 13 of the plurality of heating pipes 1, which is provided with holes on the plane.

Fig. 8 is another schematic structural diagram of a plurality of heating pipes 1, wherein the pressing plane platform 13 is provided with a hole on the plane and is flanged towards the inner cavity of the pipe.

Fig. 9 is a sectional view a-a of fig. 8.

Fig. 10 is a third structural schematic diagram of the plurality of heating pipes 1 with holes on the circular arc surface and flanging towards the inner cavity.

Fig. 11 is a top cross-sectional structural view of fig. 10.

Fig. 12 is a structural diagram of the ends of the plurality of heating pipes 1 with small notches.

Fig. 13 is an exploded view of the notch communication plate 22 including a U-shaped plate 23 and a U-shaped cover plate 24.

Fig. 14 is an external view illustrating communication between a plurality of heating pipes 1 through a communication plate of a heating slot.

Fig. 15 is a structural schematic view of the cold water heat exchange tubes 3 which are communicated with the plurality of heating pipes 1 through the notch communication plate 22 and integrally held into a plurality of bent tubes, being inserted into the tube cavities of the plurality of heating pipes 1 at one time.

Fig. 16 is a schematic structural view showing that when the plurality of heating pipes 1 are rectangular pipes, the plurality of heating pipes 1 are directly communicated with each other through a notch and the wall of the notch is welded, and the cold water heat exchange pipes 3 forming a plurality of bent pipes are integrally inserted into the pipe cavities of the rectangular pipes of the plurality of heating pipes 1 in one step.

Fig. 17 is a schematic structural view of another embodiment of communication between a plurality of heating pipes 1 through a notch communication plate 22.

Fig. 18 is a schematic structural view of a structure in which holes are formed in the arc surface of a circular tube among a plurality of heating pipes 1, and flanges are turned towards the inner cavity of the tube, and the holes are communicated with a support 12 through a heating communication straight tube 2 and are arranged on the arc surface.

In the drawings: 1. a plurality of heating pipes; 2. the heater is communicated with the straight pipe; 3. a cold water heat exchange pipe; 4. butt joint of bent pipes; 5. a cold water inlet pipe joint I; 6. a cold water outlet pipe joint II; 7. a heating air inlet pipe joint III; 8. a heating outlet pipe joint IV; 9. a pipe joint welding port; 10. the pipe is communicated with the welding hole; 11. an end closure plate; 12. a support member; 13. a flat platform; 14. a straight wall round flat mouth; 15. wall pulling the tube; 16. a straight-wall saddle port; 17. tube wall seams; 18. expanding the opening of the heat exchange tube; 19. saddle pipe orifice; 21. a small notch; 22. a notch communicating plate; 23. a U-shaped plate; 24. u-shaped apron.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

1. The invention relates to a heating pipe and pipe communicated heat exchanger as shown in figures 1-18, which comprises: a plurality of heating pipes 1, end plugs 11, heating communication straight pipes 2, wall pull pipes 15, supporting pieces 12, cold water heat exchange pipes 3, notch connecting plates 22 and pipe joint parts are assembled and welded to form a radiator-shaped heat exchanger; the heat exchanger part is provided with a pipe joint welding port 9 for facilitating the installation and welding of the pipe joint; or the heat exchanger part is not provided with a pipe joint welding port 9; a heating air inlet pipe joint III 7, a heating air outlet pipe joint IV 8, a cold water inlet pipe joint I5 and a cold water outlet pipe joint II 6 are welded and communicated with a pipe joint welding port 9 on a heat exchanger component to form a shell-side hot fluid channel or a pipe-side cold fluid channel; the method is characterized in that: the left pipe wall of one end of the side pipe of the multi-branch heating pipe 1 is provided with a pipe joint welding port 9, and the right pipe wall of the other end of the side pipe is provided with a pipe communication welding hole 10; the left pipe wall at one end and the right pipe wall at the other end of the adjacent multiple heating pipes 1 are provided with pipe communication welding holes 10 which are convenient for welding communication; the pipe wall without holes between the multiple heating pipes 1 and the adjacent pipes is provided with a support piece 12 for supporting and fixedly connecting the adjacent multiple heating pipes 1 to strengthen the stability of the left and right adjacent pipes, or the support piece 12 is not arranged between the multiple heating pipes 1 and the adjacent pipes; or the left and right pipe walls of the two ends of the plurality of heating pipes 1 are provided with pipe communication welding holes 10; or the left and right side pipe walls of the two ends of the plurality of heating pipes 1 are provided with small notches 21; the pipe cavities of the plurality of heating pipes 1 are communicated with each other; the pipe walls of the openings of the pipe communication welding holes 10 of the plurality of heating pipes 1 are turned towards the inner cavity or the outer wall in a stretching mode or are not turned towards the outer wall in a stretching mode; the heating communication straight pipes 2 are sequentially inserted into pipe communication welding holes 10 on the heating pipes 1 to be welded and communicated in series, or the pipe cavities of the heating pipes 1 are directly welded and communicated through the wall pulling pipes 15, or small pipe wall notches 21 of the heating pipes 1 are hermetically welded and blocked through notch communication plates 22, or the notch pipe walls of the heating pipes 1 are directly welded and communicated with the notch pipe walls of adjacent pipes; forming a hot fluid circulation heat transfer flow channel; at least one cold water heat exchange tube 3 is arranged in the tube cavity of the plurality of heating tubes 1; the cold water heat exchange tubes 3 are inserted into the tube cavities of the multiple heating tubes 1, pass through the tube cavities of the heating communication straight tubes 2 in the tube cavities of each branch tube, or pass through the tube cavities of the wall pull tubes 15 and are in welded communication in the tube cavities of the multiple heating tubes 1 through the elbow butt joints 4; or the cold water heat exchange tube 3 is held into a multi-circle bent tube and is integrally inserted into the tube cavities of the plurality of heating tubes 1, and the tube cavities of each heating tube are integrally communicated by crossing the small notch 21; the cold water heat exchange tubes 3 form a circulating heat absorption flow channel of one-branch single-tube path or two-branch double-tube paths or a plurality of multi-branch multi-tube paths of cold fluid in the tube cavities of the plurality of heating tubes 1; the inlet and outlet ends of the cold water heat exchange tube 3 are respectively communicated with a cold water inlet pipe joint I5 and a cold water outlet pipe joint II 6 in a welding way; the pipe joint is welded and connected with the pipe wall or the end closure plate at the position of the pipe joint welding hole 9 of the heat exchanger component in a sealing way, so that the pipe joint and the pipe joint can be conveniently installed with a user pipe network; the heating inlet pipe joint III 7 and the heating outlet pipe joint IV 8 are respectively connected with end closure plates at the welding holes 9 of the upper pipe joint of the parts of the plurality of heating pipes 1 or the pipe wall in a sealing welding way to be communicated with the pipe cavity for circulation; the cold water heat exchange tubes 3 are communicated in the tube cavities of the plurality of heating tubes 1 and qualified through pressure detection; a plurality of end plugging plates 11 are welded at the end pipe openings of the plurality of heating pipes 1; the end plugging plate 11 is used for sealing, welding and plugging the port parts of the shell pipes of the plurality of heating pipes 1; the pipe joint welding hole 9 is formed in the side pipe end blocking plate 11, so that the side pipe end blocking plate is convenient to mount, weld and fixedly connect with a pipe joint; a plurality of heating pipes 1 which are welded and communicated with the heat exchanger form a shell-side hot fluid channel or an inner pipe cold water heat exchange pipe 3 and a pipe-side cold fluid channel; the heat exchange is carried out in the flowing return stroke by forming a flow path of cold and hot media in parallel circulation; the heat exchange effect is maximized.

Compared with the prior art, the technical scheme of the invention has the following advantages:

1) the invention finds the reasons of defects in the prior art, and improves and applies for the prior art. The heat exchanger heating pipe shell pipe includes: a plurality of round heating pipes or rectangular heating pipes are welded to form a heating radiator-shaped heating heat exchanger which can radiate heat for heating and replace hot water for bathing, side pipes on two sides of a plurality of heating pipes 1 of the heat exchanger are provided with pipe communicating welding holes 10 at positions on the right side pipe wall of one end at a position 25mm away from a pipe orifice, hole flanging is convenient to be welded with a heating communicating straight pipe 2 or a wall pulling pipe 15, a pipe joint welding opening 9 is positioned on the pipe wall on the left side of the corresponding end and is convenient to insert or extend a cold water inlet pipe joint I5, a cold water outlet pipe joint II 6 is in good welding connection with the pipe wall or an end plug plate, and pipe communicating welding holes 10 are also arranged on the pipe wall on the right side of the corresponding end at positions 25mm away from the pipe orifice of the plurality of heating; the left and right pipe walls at the two ends of the heating pipe are alternately perforated and are welded and communicated with the heating communication straight pipe 2 or the wall pull pipe 15 to form a shell-side hot fluid channel and a cold fluid channel in the cavity of the multi-circle holding bent pipe cold water heat exchange pipe 3 in the pipe cavity to form a counter-flow type exchange structure, and the counter-flow type heat exchange efficiency is high, so that the heat exchange effect is maximized. Or the pipe walls of the left and right sides of the two ends of the heating pipe at a position 25mm away from the pipe orifice are both provided with pipe communicating welding holes 10 or the pipe walls are provided with small notches to communicate with adjacent pipe cavities, and the heating pipe communicating straight pipes 2 or the wall pulling pipes 15 are communicated in a welding way or the notches are communicated with the pipe cavities by the connecting plates 22 in a welding way to be communicated with each other; or the plurality of heating pipes are rectangular pipes, the pipe wall of the inner side of one end head of each side pipe at the position 25mm away from the pipe orifice of the longitudinal section of each side pipe of the rectangular pipe is provided with a small notch, the pipe wall of the left side and the right side of the adjacent pipe is provided with a small notch, the pipe wall seams 17 at the notch ends of the rectangular pipes are connected in parallel, the two wall edges of the pipe wall seams at the notch ends of the rectangular pipes are connected in a welding way to form a groove cavity fluid channel, the cold water heat exchange pipes 3 which are held into a plurality of bent pipes can be conveniently inserted into the hot fluid channel integrally at one time, and the shell pass heat channel and the cold fluid channels of the cold water heat. The end closure plate 11 is a flat opening face concave turnover edge closure plate or an outward arc convex face turnover edge closure plate, the end closure plate 11 is a plurality of arc-shaped closure plates or two rectangular flat closure plates and is turned over to facilitate welding and sealing, the welding and sealing are not easy to leak, a pipe joint welding opening 9 is formed in the edge pipe end closure plate to facilitate installation and insertion of a heating air inlet pipe joint III 7, a heating air outlet pipe joint IV 8 or a cold water inlet pipe joint I5, and the welding communication of the cold water outlet pipe joint II 6 forms a fluid inlet and outlet channel, and the pipe joint is convenient to connect with a user pipe network.

2) The inner pipe of the heat exchanger can flexibly arrange cold water heat exchange pipes in the pipe cavity of each heating pipe 1 according to the specification and the size of a product, the number and the pipe diameter of the cold water heat exchange pipes can be increased according to the large specification of the heat exchanger product, a branch pipe can be arranged to be held into a wave bent pipe or a multi-circle bent pipe to enhance heat transfer, the diameter of one cold water heat exchange pipe is 9mm and 28m, one branch pipe is held back and forth to be exchanged in the path of a single pipe of the multi-circle bent pipe, and the pipe wall of the cold water heat exchange pipe 3 held into the multi-circle bent pipe. Two cold water heat exchange tube flow paths can be arranged in a product tube cavity of the medium-specification heat exchanger, the diameter of each cold water heat exchange tube is 8mm, the length of each cold water heat exchange tube is 25-30 m, multiple return strokes are increased by holding the two cold water heat exchange tubes into a multi-circle bent tube, and the double tube paths are increased by arranging the double tube paths, the multiple return strokes are increased, heat transfer is enhanced, and heat exchange efficiency is improved. The more the flow rate is big more in the flow path, the stronger the corresponding intraductal side convection heat transfer is, that is to say, the fast more the flow rate, the reynolds number is big more, heat transfer coefficient is big more, then the heat transfer volume that unit heat transfer area can realize has also been big more. The small-specification heat exchanger product is set as a multi-branch cold water heat exchange tube, and the advantages and effects are not repeated.

3) The inner pipe of the water storage type heat exchanger in the prior art is used for storing water in the shell pipe cavity of the heating pipe channel, and the water storage type heat exchanger generally has the problems or defects that hot water is used for one round, is used for waiting for heating and is used for another round, is interrupted and can not continuously flow out. The water meter reading distortion is caused by the fact that the pressure of cold water heated and expanded is larger than the water supply pressure of a tap water pipe network, and the water meter rotates reversely or forwards, the deviation exists between the actual water consumption of some users and the reading of the water meter, and the water fee is paid more or more than the water consumption of normal household actual use. The inner pipe is a pipe with the diameter of 8mm of cold fluid, and the heating expansion stress of the thin water pipe is smaller than the pressure of a tap water pipe network. Therefore, the problem that the water storage type heat exchanger causes distortion of the water meter of a user or a water meter runs more is solved. In the prior art, the inner pipe heating pipe channel is bent to and fro at multiple positions in the pipe cavity, so that the hot fluid resistance is large, and the circulating heat exchange effect is poor. The water storage type heat exchanger realizes the heat exchange effect by prolonging the exchange time by storing hot water, the heat exchange area of the heating pipe is small, the heat resistance is influenced, the temperature difference of a cold source and a heat source is large sometimes, the outlet temperature of the heat source is higher than the outlet temperature of a cold source when once heat exchange is carried out, the heat exchange is not thorough in popular point, and the heat source temperature of the water storage type heat exchanger cannot be completely released and absorbed and lost. The water storage type heat exchanger can quickly use up the stored hot water and cannot follow up the subsequent heating, and the defects that the hot water at the cold source outlet is interrupted and cannot be used for bathing or the bathing cannot be completely carried out and the water needs to be heated and then (used) washed occur.

2. As shown in fig. 3, 4, 5 and 17, the heating pipe of the invention is communicated with the heat exchanger, and the cold water heat exchange pipe 3 is held back and forth to form a bent pipe or a spiral coil pipe to increase the return stroke; the cold water heat exchange pipes 3 are respectively inserted into the pipe cavities of each branch of the plurality of heating pipes 1; the cold water heat exchange tube 3 in one end heat exchange tube expansion port 18 and the cold water heat exchange tube 3 in the adjacent tube cavity do not expand the oral siphon, smoothly penetrate into the heating communication straight tube 2 or the wall trombone 15 cavity for elbow butt joint 4 and weld and communicate in the heating pipe orifice, and a fluid parallel circulation heat transfer flow channel is formed.

The invention can arrange a branch pipe, a two-branch pipe or a three-branch pipe cold water heat exchange pipe in the pipe cavity of a plurality of heating pipes 1 to form a counter-flow type circulation heat absorption exchange structure for a pipe pass cold fluid and a shell pass hot fluid channel, a copper pipe or a stainless steel pipe with the diameter of 8mm is selected to be held into a plurality of circles of bent pipes to be separately inserted into the pipe cavities of the plurality of heating pipes, the cold water heat exchange pipe selects a double-pipe channel with the diameter of 8mm, thereby increasing the heat exchange area, prolonging the fluid flowing exchange time and improving the heat transfer effect, the inner diameter of the branch pipe, the two-branch pipe or the multi-branch pipe cold water heat exchange pipe channel is small in size, the heat exchange performance of the heat exchanger fluid can be further strengthened, the length of the heat exchange channel is increased, the heat exchange area of the single fluid is enlarged. The heat exchangers with different specifications can exchange hot water, and the problem of continuous outflow of bath water due to large hot water flow is solved.

One or two cold water heat exchange tubes 3 are held back and forth to form a multi-circle bent tube, so that the fluid contact surface is increased, the heat exchange effect is good, one end of the cold water heat exchange tube 3 of the group A of the tubes, which are inserted into each heating pipe cavity and are not in circle, is provided with a heat exchange tube expansion opening 18, the expansion opening 18 of the heat exchange tube is in welded communication with the non-expansion bent tube of the cold water heat exchange tube 3 of the group B of the tubes, which passes through the tube cavity of the heating communication straight tube 2 or the tube cavity of the wall pulling tube 15, the adjacent tube cavity of the heating pipe of the group B of the tubes, the expansion opening of the cold water heat exchange tube 3 is inserted into the expansion opening, the tube openings of the group B of. The orifices of the inlet and outlet ends of one or two cold water heat exchange tubes are inserted into the cold water inlet tube joint I5 and the cold water outlet tube joint II 6 and are welded and communicated, cold fluid enters and is divided into one path or two paths from the tube joints to circularly absorb heat in the cavities of the plurality of heating tube cavities, the number of the reciprocating holding loops of the cold water heat exchange tubes 3 is increased, the contact area with hot fluid is increased, heat conduction is accelerated, and the heat exchange effect is improved. The technical defects that in the prior art, the state of a branch straight pipe of a cold water heat exchange pipe and the state of a fluid contact surface are small, the heat exchange efficiency is low, the effect is poor, the flow of a hot water outlet is small, the shower nozzle cannot be opened, and the bathing can not be carried out due to the fact that the shower nozzle is not opened after the click answer is made.

3. The invention relates to a heating pipe communicated heat exchanger, wherein a plurality of heating pipes 1 are provided with cold water heat exchange pipes 3 with the number of turns of holding bent pipes; from the end pipe of the heat source heating air inlet pipe joint III 7, arranging a cold water heat exchange pipe 3 in the pipe cavity of each of the plurality of heating pipes 1 to form a heat exchange pipe holding and bending path with two circles of holding and bending paths for one pipe or two branch pipes with one circle of holding and bending paths for the other pipe; sequentially increasing the number of turns of the holding bent pipe or increasing the number of turns of the holding bent pipe by several times from one pipe cavity to a plurality of adjacent circular heating pipes 1 towards the end of the heat source heating outlet pipe connector IV 8; the quantity of the bent pipe loops of the cold water heat exchange pipes 3 of the pipe cavities of the plurality of heating pipes 1 at the end of the heat source heating outlet pipe joint IV 8 is one pipe path for a plurality of circles or two pipe paths for a plurality of circles; the cold fluid in the cold water heat exchange tube 3 is circulated in the multi-circle bent tube in multiple return strokes to enhance the rapid heat absorption and maximize the heat exchange effect.

The invention scientifically and reasonably arranges the number of the turns of the holding bent pipe of the cold water heat exchange pipe 3 from the end of the heating outlet pipe joint IV 8 of the heating side pipe in the pipe cavity of the plurality of heating pipes of the heat exchanger to increase the heat exchange area for the multi-turn bent pipe, and enhances the heat transfer at the first time to improve the heat transfer rate and greatly improve the heat exchange efficiency. Therefore, the heat absorption area of the cold water heat exchange tube 3 can be increased by holding a plurality of circles of bent tubes in the first branch tube cavity of the IV 8 side tube of the heating pipe joint of the heat exchanger or the adjacent two branch tube cavities, the exchange heat transfer rate is fast and the heat conduction rate is fast, the temperature difference between cold fluid and hot fluid entering the tube cavity of the cold water heat exchange tube 3 from the cold water inlet tube joint I5 at the IV 8 end of the heating pipe joint of the heating pipe is large when the heat exchanger is used, the dividing wall type countercurrent heat transfer device has the advantages of high heat exchange efficiency, small heat loss, small size, compact and light structure, the heat released by the hot fluid is instantly transferred to the cold fluid, the released heat is equal to the absorbed heat, and the heat exchange. The heat absorption area of the two-channel path is mostly fast in return heat conduction, so that the heat exchange performance is increased, the temperature gradient is rapidly changed to the direction of a cold source outlet of the heat exchanger, and the temperature difference disappears as a result of heat transfer. The hot water at the outlet of the cold source exchanged by the heat exchanger is in direct proportion to the heat taken away by the hot water sprayed from the flow of the user spray head, so that the heat exchanger continuously flows out the hot water without interruption.

4. The invention discloses a heating pipe communicated heat exchanger, wherein the number of the turns of holding bent pipes of cooling water heat exchange pipes 3 in pipe cavities of each plurality of heating pipes 1 adjacent to the ends from a heat source heating pipe inlet pipe joint III 7 to a heating pipe outlet pipe joint IV 8 is the same; or the number of the turns of the holding elbows of the cold water heat exchange tubes 3 in each pipe cavity of the plurality of heating pipes 1 adjacent to the end of the heat source heating outlet pipe joint IV 8 is more than the number of the turns of the holding elbows of the cold water heat exchange tubes 3 in the pipe cavity of the plurality of heating pipes 1 at the end of the heating inlet pipe joint III 7.

The cold water heat exchange tubes 3 are held into an integral bent tube or a split bent tube, the number of holding and bending loops of the tubes is increased, namely the number of return strokes is increased, the tube cavities of a plurality of heating tubes 1 are provided with heat exchange tubes with different return turns at different heat exchange positions, the four return strokes are better than the two return strokes, and the problem of bathing by exchanging hot water can be met only by using the multiple return strokes when the logarithmic temperature difference is small due to low heat supply temperature at present.

5. As shown in fig. 12, 13, 14, 15, and 17, in the heat exchanger of the present invention, the slot communication plate 22 includes: the U-shaped plate 23 and the U-shaped cover plate 24, the U-shaped plate 23 and the pipe wall of the small notch of the plurality of heating pipes 1 are welded and connected to form an adjacent pipe cavity channel, so that the cold water heat exchange pipe 3 is integrally inserted into each pipe cavity of the plurality of heating pipes 1 at one time; the U-shaped cover plate 24 is hermetically welded to block the port of the U-shaped plate to form a hot fluid circulation heat transfer flow channel.

In order to realize that the cold water heat exchange tube is held into a multi-circle bent tube and is integrally inserted into the tube cavity of the plurality of heating tubes 1 at one time to reduce the welding process of the cold water heat exchange tube, a small notch is formed in the right tube wall of one end of the side tube of the plurality of heating tubes 1, a small notch is formed in the same end of the adjacent tube, and the notch communication plate 22 is used for welding and communicating the notch tube walls between the adjacent tubes; the cold water heat exchange tubes are integrally held into a plurality of circles of bent tubes according to the number of the plurality of heating pipes, the bent tubes are inserted into the plurality of heating pipes 1 at one time and cross the small groove openings to enter the pipe cavities, the U-shaped cover plate 24 seals and seals the groove opening communicating plate in a sealing and welding manner, and the pipe openings at the end heads of the plurality of heating pipes are sealed and sealed by the end plug plates in a welding manner; the orifices at the inlet and outlet ends of the cold water heat exchange tube 3 are all held into a plurality of bent tubes to be integrally inserted into the tube cavity of the heating tube except for the welding with the cold water inlet tube joint I5 and the cold water outlet tube joint II 6; the cold water heat exchange tube 3 is integrally bent without a welding joint, welding materials such as welding wire argon are saved, the water leakage rate is controlled, and the product quality is improved. The U-shaped plate can be manufactured into a plate with an arc-shaped surface according to the diameter arc surface of the plurality of heating pipes, the adjacent pipes are communicated in a welding mode along the wall of the small groove formed by the plurality of heating pipes to form a channel, so that the cold water heat exchange pipe 3 can be conveniently inserted into the whole bent pipe, and the U-shaped cover plate can be manufactured with a welding plug according to the arc surface of the pipe opening and is conveniently embedded into the pipe opening of the plurality of heating pipes together with the end plug plate and is sealed and welded. The grooving opening of the mouth of the heating pipe forms a groove, so that the cold water heat exchange pipe 3 is integrally held into a multi-circle bent pipe to be inserted into the pipe cavities of the plurality of heating pipes, the labor intensity is reduced, the welding process is reduced, the labor expenditure is reduced, the processing cost is greatly reduced, the production cost is reduced, and the production efficiency is improved.

6. As shown in fig. 2, 4, 5 and 17, the heating pipes of the invention are communicated with the heat exchanger, and a plurality of heating pipes 1 are round pipes, rectangular pipes or elliptical pipes; the circular tube or the elliptical tube is locally positioned and pressed with a flat platform 13 on the wall of the arc surface tube; the rectangular tube does not need to be pressed into the flat platform 13; sequentially punching pipe communication welding holes 10 on the plane of a plane table 13, and stretching and flanging the pipe walls of the pipe communication welding holes 10 to the outer wall or the inner cavity to form straight-wall round flat openings 14; straight wall round pipe flat mouths 14 on the pipe walls of the plurality of heating pipes 1 are directly welded with adjacent straight wall round flat mouths 14 in a mouth-to-mouth mode to form a mouth-to-mouth welding wall pull pipe 15, and the pipe cavities of the mouth-to-mouth welding wall pull pipes are communicated with the plurality of heating pipes 1; or the heating communication straight pipes 2 are inserted into the straight wall round flat openings 14 on the pipe walls of the plurality of heating pipes 1 and are sequentially welded and communicated in the inner cavities of the pipe orifices of the plurality of heating pipes 1 or outside the pipe orifices in sequence to form a hot fluid circulating heat transfer flow channel; or the circular arc surface pipe walls on the same side of two ends of the side pipes on two sides of the plurality of heating pipes 1 are pressed with the flat platforms 13, and the circular arc surface pipe walls on two sides of two ends of the plurality of heating pipes 1 adjacent to the side pipes are pressed with the flat platforms 13; sequentially forming a pipe communication welding hole 10 on the plane of the plane table, and positioning the pipe wall of the pipe communication welding hole 10 to stretch a flanging straight-wall round flat opening 14 towards the outer wall or the inner cavity; the communication of the pipe cavities among the plurality of heating pipes 1 is fixedly connected with each other by welding through butt welding wall pull pipes 15 or direct cooling water communication circular pipes 2; no supporting piece 12 is arranged between the adjacent heating pipes 1.

The invention presses a flat platform on the circular arc surface of a round heating pipe, the flat opening is a flat opening which is beneficial to forming a straight-wall round flat opening by drawing the wall length outwards and turning the opening, the butt-welding wall-drawing pipe 15 makes full use of the straight-wall round flat opening 14 which is formed by outwards stretching the pipe wall of a plurality of heating pipes 1 and extending a certain length, the straight-wall round pipe flat opening which is formed by outwards stretching and extending the adjacent plurality of heating pipes is directly communicated with the butt-welding opening in a butt-welding way to directly replace a heating communication straight pipe 2, the communication among the plurality of heating pipes 1 is not provided with the heating communication straight pipe 2 any more, blanking is not needed in the production process to manufacture the communication pipe, the processing technology and the materials are saved, the resources are effectively saved by the invention of the butt-welding communication pipe of the heating pipe wall-drawing pipe, the resources are fully utilized, the technical means of the invention saves the materials and the manufacturing procedures of the communication pipe, and, Compared with the prior art, the communication of the opposite welding wall drawtubes reduces the welding head of each heat exchanger by 50 percent and reduces the water leakage rate, the communication pipe in the prior art is two welding lines, and the communication of the opposite welding wall drawtubes is a welding amount which reduces the welding amount by 50 percent through one opposite welding line. The invention realizes the external welding of argon arc welding for the butt-welded wall drawn pipe, the back of the welding line is filled with argon to protect the welding line, the back of the welding line has no penetration welding beading, no welding trace and no air hole, so that the welding line has the advantages of single-side welding and double-side forming, flatness, smoothness, high strength, effective reduction of water leakage rate, reduction of oxidation corrosion of the welding line and the like. The method obviously improves the strength and the pressure bearing capacity of the welding line, the welding line is not easy to leak water, and the service life of the product is prolonged. The technical scheme of the prior art welds the heating air intercommunication straight tube in the mouth of pipe of many heating pipes, can't realize the inner wall and fill the technical defect of argon protection welding seam.

7. As shown in fig. 2, 4, 5, 6, 7 and 8, in the heating pipe and pipe communicated heat exchanger of the present invention, a plurality of heating pipes 1 are positioned and pressed on the pipe wall to form a flat platform 13, and the mouth shape of the round pipe mouth is not changed, the flat platform 13 is provided with a pipe communicated welding hole 10, and the pipe wall of the pipe communicated welding hole 10 is extended outwards to form a straight wall round flat mouth 14 with a certain length; the walls of the plurality of heating pipes 1, which are stretched outwards, are long and tubular, and are aligned with the tubular openings, which are stretched outwards, of the adjacent plurality of heating pipes 1, and the openings are directly aligned with the openings to form the aligned welding wall pull pipe 15, which is welded and fixedly connected outside, so that the plurality of heating pipes 1 are connected and communicated without communicating pipe components, materials are saved, the water leakage rate is reduced, and the product quality is improved.

8. As shown in fig. 4, 5 and 9, in the heating pipe communication heat exchanger of the present invention, the heating communication straight pipe 2 is a straight pipe cylindrical flat opening, and the pipe orifice of the heating communication straight pipe 2 is inserted into a straight wall round flat opening 14 which is stretched towards the outer wall of the pipe communication welding hole 10 on the plurality of heating pipes 1; the outsides of a plurality of heating pipes 1 are welded and communicated; the outer ports of the plurality of heating pipes 1 are provided with end plugging plates 11, the end plugging plates 11 are round convex arc-shaped or concave end plugging plates and are outwards turned with edges or are not turned, and the end plugging plates 11 are embedded in the ports of the plurality of heating pipes 1 and fixedly connected in a welding manner; the end closure plates 11 on the side pipes at two sides of the multi-branch heating pipe 1 are provided with pipe joint welding ports 9, and a heating inlet pipe joint III 7 and a heating outlet pipe joint IV 8 are connected with the pipe joints in a welding way and communicated with the pipe cavities to form a hot fluid circulating heat transfer flow channel.

9. As shown in fig. 10, 11 and 18, in the heating pipe communication heat exchanger of the present invention, an elliptical pipe communication welding hole 10 is locally positioned and stamped on the arc surface of the pipe wall of a plurality of heating pipes 1, the pipe communication welding hole 10 is stretched and turned over to the pipe inner cavity to form a straight wall saddle opening 16, the pipe orifice of a heating communication straight pipe 2 is punched to form a saddle-shaped pipe orifice 19, and the saddle-shaped pipe orifice is inserted into the straight wall saddle openings 16 of the plurality of heating pipes 1 and is sequentially welded and communicated in the pipe orifices of the plurality of heating pipes 1 to form a communication fluid channel; a plurality of heating pipes 1 which are fixedly connected and adjacent to each other by supporting pieces 12 are arranged at the end corresponding to the heating communication straight pipe 2 to form an integral heating radiator shape; or the corresponding end of the heating communication straight pipe 2 is not provided with the supporting piece 12; a heating communication straight pipe 2 and a plurality of heating circular pipes 1 are welded and communicated with each pipe cavity through straight-wall saddle openings 16 to form a fluid circulation heat transfer flow channel.

10. The invention relates to a heating pipe communicated heat exchanger, wherein a plurality of heating pipes 1 form an even number of heating pipes, and a heating inlet pipe joint III 7 and a heating outlet pipe joint IV 8 are welded on end closure plates 11 of pipe joints of side pipes at two sides of a plurality of heating circular pipes 1 at the same end or on the side pipes; a cold water inlet pipe joint I5 and a cold water outlet pipe joint II 6 are welded in pipe joint welding openings 9 at two sides of the multi-branch heating pipe 1 at the same end or on end closure plates 11 of pipes at two sides to form a fluid parallel circulating heat transfer countercurrent channel; or a plurality of heating pipes 1 form odd branches; a heating air inlet pipe joint III 7 and a heating air outlet pipe joint IV 8 are welded on pipe joint welding openings 9 of pipe end closure plates 11 at two sides of a plurality of heating pipes 1 at different ends; and a cold water inlet pipe joint I5 and a cold water outlet pipe joint II 6 are welded on pipe joint welding ports 9 at two sides of the plurality of round heating pipes 1 at different ends to form a fluid parallel circulating heat transfer countercurrent channel. The installation of setting up convenience and pipe network saves installation material like this for the heat exchanger is vertical or horizontal all can install the utilization ratio of make full use of house space.

Claims

1. A heating pipe and tube communicating heat exchanger, comprising: a plurality of circular tube heating pipes (1), end plugging plates (11), cold water heat exchange pipes (3), U-shaped plates (23), U-shaped cover plates (24) and pipe joint parts are welded and combined; the heat exchanger part is provided with a pipe joint welding port (9) which is convenient for installing and welding the pipe joint; a heating air inlet pipe joint III (7), a heating air outlet pipe joint IV (8), a cold water inlet pipe joint I (5) and a cold water outlet pipe joint II (6) are respectively connected and communicated with a pipe joint welding port (9) in a welding way; the method is characterized in that: at least one cold water heat exchange pipe (3) is arranged in the pipe cavity of the circular pipe heating pipe (1), the cold water heat exchange pipe (3) is held into a multi-circle bent pipe and integrally inserted into the pipe cavities of the plurality of circular pipe heating pipes (1) at one time, and the pipe cavities of the plurality of circular pipe heating pipes are integrally communicated with each other in a crossing manner from the cavity of the small notch (21) in each circular pipe heating pipe cavity; the welding process of the cold water heat exchange tube (3) is reduced, and welding materials are saved; or one end opening heat exchange tube expansion opening (18) of the cold water heat exchange tube (3) is in butt joint with a non-expansion opening bent tube opening of the cold water heat exchange tube (3) inserted into the tube cavity of the adjacent round tube heating tube (1), and bent tube butt joints (4) are sequentially crossed over the small notch (21) and are respectively welded and communicated to form a cold fluid flow channel; a pipe orifice at one end of each circular pipe heating pipe (1) is provided with a small notch (21), the same end of each adjacent circular pipe heating pipe is provided with a small notch (21), and the pipe cavities of a plurality of circular pipe heating pipes (1) are mutually communicated; the small notch (21) of the round pipe heating pipe (1) is connected and communicated with the adjacent round pipe heating pipe through a U-shaped plate (23) and a U-shaped cover plate (24) in a welding way; an end plug plate (11) is arranged in the pipe orifice of the round pipe heating pipe (1), and the end plug plate (11) is an arc-shaped plate and is turned over with edges; the arc-shaped end plugging plates (11) are hermetically welded and plugged with the pipe walls of the plurality of circular pipe heating pipes (1); the inlet and outlet ends of the cold water heat exchange tube (3) are respectively welded and communicated with a cold water inlet tube joint I (5) and a cold water outlet tube joint II (6) and then are welded and fixedly connected with the wall of a tube joint welding port (9); a central heating inlet pipe joint III (7) and a central heating outlet pipe joint IV (8) are respectively connected with the pipe wall of an upper pipe joint welding port (9) of a plurality of circular pipe heating pipes (1) in a sealing and welding way and communicated with the pipe cavity for circulation; form a round heating pipe communicated heat exchanger.

2. The heating pipe and tube communicating heat exchanger as recited in claim 1, wherein: small notches (21) are formed in the left and right side pipe walls of the two end heads of the plurality of circular pipe heating pipes (1), and are communicated through a U-shaped plate (23) and a U-shaped cover plate (24) in a welding and plugging mode; a plurality of circular tube heating pipes (1) are firmly fixed by a support piece (12) arranged on the wall of the non-opening pipe; the cold water heat exchange tubes (3) are respectively inserted into the cavities of the plurality of circular tube heating tubes (1) and are communicated by split elbow pipe mouth-to-mouth welding; the inlet and outlet ends of the cold water heat exchange tube (3) are respectively communicated with a cold water inlet tube joint I (5) and a cold water outlet tube joint II (6) in a welding way; the outer ports of the plurality of circular tube heating pipes (1) are provided with end plugging plates (11), the end plugging plates (11) are round convex arc-shaped or concave end plugging plates and are outwards turned with edges, and the end plugging plates (11) are embedded in the pipe ports of the plurality of circular tube heating pipes (1) and fixedly connected in a welding mode; the end closure plates (11) on the side pipes at two sides of the multi-branch round pipe heating pipe (1) are provided with pipe joint welding ports (9), and a heating inlet pipe joint III (7) and a heating outlet pipe joint IV (8) are connected with the pipe joints in a welding way and communicated with the pipe cavity to form a hot fluid circulating heat transfer flow channel.

3. The heating pipe and tube communicating heat exchanger as recited in claim 1, wherein: a plurality of circular tube heating pipes (1) form an even number of heating pipes, and a heating inlet pipe connector III (7) and a heating outlet pipe connector IV (8) are welded on the pipe connector welding openings (9) of end closure plates (11) of side pipes at two sides of the plurality of circular tube heating pipes (1) at the same end; a cold water inlet pipe joint I (5) and a cold water outlet pipe joint II (6) are welded in pipe joint welding ports (9) at two sides of the multi-branch circular pipe heating pipe (1) at the same end to form a fluid parallel circulation heat transfer fluid counter-flow channel; or a plurality of round pipe heating pipes (1) form odd number; a central heating inlet pipe joint III (7) and a central heating outlet pipe joint IV (8) are welded on pipe joint welding openings (9) of pipe end closure plates (11) at two sides of a plurality of circular pipe heating pipes (1) at different ends; the cold water inlet pipe joint I (5) and the cold water outlet pipe joint II (6) are welded on pipe joint welding ports (9) at two sides of the multi-branch round pipe heating pipe (1) at different ends to form a fluid parallel circulation heat transfer fluid counter-flow channel.