Integrated heat exchange device and heat pump water heater applying same

Abstract

The utility model provides an integrated heat exchange device and a heat pump water heater applying the same, the integrated heat exchange device comprises an integrated pipe body, a plurality of heat exchange micropores penetrating through the pipe body along the axial direction of the pipe body are arranged in the middle of the pipe body in the thickness direction, and a plurality of first convex structures are arranged on the inner hole wall of a heat exchange inner hole of the pipe body. Second protruding structures are arranged in the heat exchange micropores. The two ends of the pipe body are reserved and cut to form pipe body outer layer thinning sections with heat exchange micropores, and a main body section with heat exchange micropores is formed between the pair of thinning sections at the two ends of the pipe body; the sealing pipe sleeve is arranged on the thinning section in a sleeving mode, a confluence cavity communicating with the heat exchange micropores of the main body section is formed between the inner side wall of the sealing pipe sleeve and the thinning section, and the sealing pipe sleeve is provided with a confluence hole communicating with the confluence cavity; and the connecting pipe communicates with the confluence hole and is used for being connected with a refrigerant pipeline of the heat exchange system. According to the integrated heat exchange device, the heat exchange inner pipe and the heat exchange outer pipe are formed into a whole in a one-time hot extrusion mode, the pipe body is provided with the micropores capable of reducing the refrigerant filling amount, and the tooth-shaped structures are arranged on the inner wall and the outer wall of the pipe body to enhance heat exchange.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump water heater technical field, especially to a kind of integrated heat exchange device and the heat pump water heater of application thereof. BACKGROUND

[0002] At present, the double-layer pipe body structure is generally used in the sleeve type heat exchanger for heat exchange with external engineering water pipe of traditional heat pump water heater unit, the inner tube adopts twisted heat exchange pipe, and the outer tube adopts steel pipe nested outside the inner layer twisted heat exchange pipe. This sleeve type heat exchanger is limited by the process of winding twisted heat exchange pipe, has the defects of smaller single pipe heat exchange capacity and higher manufacturing cost when pipe length is larger, and at the same time, because the gap volume between the inner layer twisted heat exchange pipe and the outer layer steel pipe is larger, the refrigerant filling amount in the space volume between the inner and outer pipe bodies is larger, which is not conducive to the heat exchange reliability and controllability of heat pump water heater system, thereby affecting the heat exchange performance of the system. SUMMARY

[0003] The utility model provides a kind of integrated heat exchange device and the heat pump water heater of application thereof, to solve the technical problems that the double-layer pipe body type heat exchanger is used in existing heat pump water heater, leading to insufficient single pipe heat exchange capacity and high manufacturing cost.

[0004] To solve the above problems, the technical scheme adopted by the utility model is:

[0005] The utility model provides a kind of integrated heat exchange device, comprising:

[0006] The pipe body of integrated molding is provided with a plurality of heat exchange micropores penetrating the pipe body along the axial direction in the middle part of the pipe wall thickness, the inner hole wall of the heat exchange inner hole of the pipe body is provided with a plurality of first protruding structures, and the second protruding structure is arranged in the heat exchange micropore;The pipe body is provided with a thinning section of the outer layer of the pipe body in which the heat exchange micropore is reserved and cut off at both ends, and the main section provided with the heat exchange micropore is formed between a pair of thinning sections at both ends of the pipe body;

[0007] The sealing pipe sleeve is sleeved on the thinning section, and the inner side wall of the sealing pipe sleeve and the thinning section form a flow collection cavity communicating with the heat exchange micropore of the main section, and the sealing pipe sleeve is provided with a flow hole communicating with the flow collection cavity;

[0008] The connecting pipe is communicated with the flow hole and is used for being connected with the refrigerant pipeline of the heat exchange system.

[0009] Preferably, the first protruding structure is a first protruding tooth, and the first protruding tooth is arranged on the inner hole wall of the pipe body along the axial direction of the pipe body.

[0010] The second protruding structure is a second protruding tooth, and the second protruding tooth is arranged on the hole wall of the heat exchange micropore along the axial direction of the pipe body.

[0011] Preferably, the inner hole wall of the pipe body is uniformly spaced with a plurality of first protrusions along the circumference of the pipe body, and the pipe body is uniformly spaced with a plurality of heat exchange micro-holes along the circumference of the pipe body.

[0012] Preferably, the cross section of the heat exchange micro-hole is rectangular, and the second protrusion is arranged on the side hole wall of the heat exchange micro-hole close to the inner hole wall of the pipe body.

[0013] Preferably, one end of the sealing sleeve is welded to the thinning section, and the other end of the sealing sleeve is welded to the main body section.

[0014] Preferably, the length of the thinning section is 30-200mm.

[0015] Preferably, the pipe body is integrally hot extruded by a metal inner pipe with a first protruding structure on the inner side and a metal outer pipe.

[0016] Preferably, the outer side wall of the metal inner pipe is provided with a second protruding structure, and the inner side of the metal outer pipe is provided with a groove matched with the second protruding structure, and when the metal inner pipe and the metal outer pipe are integrally hot extruded, the groove is fitted with the outer side wall of the metal inner pipe to form a heat exchange micro-hole covering the second protruding structure.

[0017] The utility model also provides a kind of heat pump water heater, and the heat exchange system of heat pump water heater includes compressor, heat exchanger, further include above-mentioned integrated heat exchange device, connecting pipe is used to be connected with the refrigerant pipeline of heat exchange system, and the end of thinning section is used to butt joint external water pipe.

[0018] Further, the heat pump water heater further comprises:

[0019] Unit base, compressor and heat exchanger are installed on unit base;

[0020] Fixed support, installed on unit base, for fixedly installing integrated heat exchange device;

[0021] Water pipe joint is connected to the end of thinning section, for connecting external water pipe;

[0022] Temperature sensing unit is arranged on water pipe joint.

[0023] Compared with prior art, the utility model has the following beneficial effects:

[0024] The integrated heat exchange device provided by the utility model once hot extrusion forms integrated heat exchange pipe body by heat exchange inner pipe and outer pipe, and simultaneously realizes the processing of multiple micro-hole flow passages during heat extrusion of heat exchange pipe, and the inner and outer circumferential walls of integrated heat exchange pipe body are both provided with tooth-like structure to realize the enhancement of heat exchange, and the filling amount of refrigerant can be reduced by multiple micro-hole flow passages, so as to reduce the pressure loss of heat exchange system, and then the compression ratio of compressor can be reduced, energy consumption can be reduced, oil return can be optimized, and the overall system reliability, stability and heat exchange performance of heat pump water heater unit are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution proposed by the present invention, it is described in detail below in combination with the embodiments and drawings. It should be understood that the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, these drawings can be changed under the concept of the present invention.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a tube body of an embodiment of an integrated heat exchange device provided by the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the partial enlarged structure of the A region of the tube body;

[0028] Figure 3 for Figure 1 A schematic diagram of a partial enlarged structure of the B region of the tube body;

[0029] Figure 4 This is a schematic diagram of the main structure of the tube body of an embodiment of the integrated heat exchange device provided by the present utility model;

[0030] Figure 5 A schematic side view of the structure of a tube body of an embodiment of an integrated heat exchange device provided by the present invention;

[0031] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure of the tube body along the CC direction;

[0032] Figure 7 for Figure 6 A schematic diagram of the local enlarged structure of the E region of the tube body;

[0033] Figure 8 for Figure 4 Schematic diagram of the cross-sectional structure of the tube body along the DD direction;

[0034] Figure 9 A schematic diagram of the assembly structure of a pipe body and a sealing sleeve in a partially sectional view of an embodiment of the integrated heat exchange device provided by the present invention;

[0035] Figure 10 for Figure 9 A schematic diagram of the partially enlarged structure of the tube body and the sealing sleeve in the F area;

[0036] Figure 11 A schematic side view of the assembly structure of the tube body and the sealing sleeve of an embodiment of the integrated heat exchange device provided by the present invention;

[0037] Figure 12The embodiment of the integrated heat exchange device provides an assembly three-dimensional structure schematic diagram of a pipe body, a sealing sleeve, a fixing support, a water pipe joint, a mounting flange and a temperature sensing unit.

[0038] In the drawings, the main marks are as follows:

[0039] 1, pipe body; 11, heat exchange inner hole; 111, first protruding structure; 12, heat exchange micro hole; 121, second protruding structure; 13, thinning section; 14, main body section; 2, sealing sleeve; 22, flow collecting hole; 21, flow collecting cavity; 23, sleeve ring; 3, connecting pipe; 4, fixing support; 41, support bottom plate; 42, support side plate; 5, water pipe joint; 51, mounting flange; 6, temperature sensing unit; 61, mounting sleeve.

[0040] In the drawings, the other marks are as follows:

[0041] L1, end length; L2, main body length. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail in combination with the drawings and embodiments. Figures 1-12

[0043] Please refer to Figures 1-12 The utility model provides an integrated heat exchange device, which comprises:

[0044] The pipe body 1 is integrally formed, the middle part of the pipe wall thickness direction of the pipe body 1 is provided with a plurality of heat exchange micro holes 12 penetrating the pipe body 1 along the axial direction of the pipe body 1, the inner hole wall of the heat exchange inner hole 11 of the pipe body 1 is provided with a plurality of first protruding structures 111, and the heat exchange micro hole 12 is provided with a second protruding structure 121; the axial two ends of the pipe body 1 are provided with thinning sections 13 reserved for cutting the outer layer of the pipe body 1 provided with the heat exchange micro hole 12, and the pipe body 1 forms a main body section 14 provided with the heat exchange micro hole 12 between the pair of thinning sections 13 at the two ends; the sealing sleeve 2 is sleeved on the thinning section 13, the inner side wall of the sealing sleeve 2 and the thinning section 13 form a flow collecting cavity 21 communicating with the heat exchange micro hole 12 of the main body section 14, the sealing sleeve 2 is provided with a flow collecting hole 22 communicating with the flow collecting cavity 21; the connecting pipe 3 is communicated with the flow collecting hole 22 and is used for being connected with the refrigerant pipeline of the heat exchange system. The flow collecting cavity 21 serves as a collection space area for the refrigerant flowing between the refrigerant pipeline and the heat exchange micro hole 12 of the pipe body 1, and the refrigerant is divided or collected between the refrigerant pipeline and the heat exchange micro hole 12 through the collection space area.

[0045] Please refer to Figures 1-12 ​In the embodiment, the extending direction of the pipe body 1 can be one or both of a straight direction and a curved direction, and the axial direction of the pipe body 1 is the direction of the connecting line of the centers of the cross sections of the pipe body 1 at different extending directions, i.e. the axial direction of the pipe body 1 at different extending directions is parallel to the extending direction.

[0046] Please refer to Figures 1-12 In the embodiment, the first protruding structure 111 is a first protruding tooth protruding on the inner hole wall of the pipe body 1, and the first protruding tooth (the first protruding structure 111) is arranged on the inner hole wall of the pipe body 1 along the axial direction of the pipe body 1.

[0047] Please refer to Figures 1-12 In the embodiment, the second protruding structure 121 is a second protruding tooth protruding on the hole wall of the heat exchange micro hole 12, and the second protruding tooth (the second protruding structure 121) is arranged on the hole wall of the heat exchange micro hole 12 along the axial direction of the pipe body 1.

[0048] Please refer to Figures 1-12 In the embodiment, a plurality of first protruding teeth (the first protruding structure 111) are arranged on the inner hole wall of the pipe body 1 along the circumferential direction of the pipe body 1 in a radial and uniform manner, and a plurality of heat exchange micro holes 12 are arranged on the pipe body 1 along the circumferential direction of the pipe body 1 in a radial and uniform manner. Since the heat exchange system uses a plurality of micro holes with small space volume for heat exchange of the refrigerant working medium, the refrigerant charge of the heat exchange system can be effectively reduced, thereby reducing the pressure loss of the heat exchange system.

[0049] Please refer to Figures 1-12 As a preferred embodiment of the embodiment, the cross section of the heat exchange micro hole 12 is rectangular, the second protruding tooth (the second protruding structure 121) is arranged on the hole wall of the heat exchange micro hole 12 close to the inner hole wall of the pipe body 1, and protrudes outwardly in the direction away from the inner hole wall of the pipe body 1 in the heat exchange micro hole 12.

[0050] Please refer to Figures 1-12 As a preferred embodiment of the embodiment, one end of the sealing sleeve 2 is welded to the thinning section 13, and the other end of the sealing sleeve 2 is welded to the main body section 14, so that the sealing sleeve 2 is integrated with the thinning section 13 and the main body section 14 of the pipe body 1, and a closed space as the above-mentioned converging cavity 21 is formed between the inner side wall of the sealing sleeve 2, the outer surface of the thinning section 13 and the end of the main body section 14.

[0051] Please refer to Figures 1-12 As a preferred embodiment of the embodiment, the sealing sleeve 2 is provided with a ring 23 surrounding the converging hole 22 at the position of the converging hole 22 (i.e. the position of the converging hole 22 connected to the opening of the sealing sleeve), and the outer side of one end of the connecting pipe 3 is welded to the inner side of the ring 23, so that the connecting pipe 3 is sealingly connected to the ring 23, and the connecting inner hole of the connecting pipe 3 is in closed communication with the converging cavity 21.

[0052] Please refer to Figures 1-12 , as the preferred embodiment of the present embodiment, the extension direction of the main section 14 of the pipe body 1 is one or both of the straight line direction and the curved direction, and the extension direction of the thinning section 13 of the pipe body 1 is a straight line direction.

[0053] Please refer to Figures 1-12 , as the more preferred embodiment of the present embodiment, the end length L1 of the thinning section 13 at both ends of the pipe body 1 is linearly extended along the axis of the pipe body 1, and the end length L1 is 30-200m, and the end length L1 is less than the main length L2 of the main section 14 of the pipe body 1.

[0054] Please refer to Figures 1-12 , as the preferred embodiment of the present embodiment, the metal inner tube and the metal outer tube of the pipe body 1 are integrally hot extruded to form the first protruding structure 111 on the inner side of the metal inner tube.

[0055] Please refer to Figures 1-12 , as the more preferred embodiment of the present embodiment, the metal pipe material with high heat conduction efficiency and good corrosion resistance is used as the metal inner tube and the metal outer tube for integrally hot extrusion, such as copper, brass and other metal materials.

[0056] Please refer to Figures 1-12 , as the more preferred embodiment of the present embodiment, the second protruding structure 121 is pre-processed on the outer side wall of the metal inner tube, and the inner side of the metal outer tube is provided with a groove matched with the position and shape of the second protruding structure 121, and when the metal inner tube and the metal outer tube are integrally hot extruded, the inner side wall of the metal outer tube is tightly fitted with the outer side wall of the metal inner tube, so that the groove of the inner side wall of the metal outer tube is fitted between the outer side wall of the metal inner tube to form the closed heat exchange micropore 12 covering and surrounding the second protruding structure 121.

[0057] Please refer to Figures 1-12 The utility model also provides a kind of heat pump water heater, and the heat exchange system of heat pump water heater includes compressor (not shown in drawing), heat exchanger (not shown in drawing), also include above-mentioned integrated heat exchange device, wherein the pair of connecting pipe 3 of integrated heat exchange device is used to be connected with the refrigerant pipeline (not shown in drawing) of heat exchange system, and the end of thinning section 13 is used to butt-joint for supplying hot water to terminal external water pipe (not shown in drawing).

[0058] Please refer to Figures 1-12 In the present embodiment, the heat exchanger of the heat exchange system of heat pump water heater is finned heat exchanger, the refrigerant pipeline of heat exchange system is the refrigerant pipeline connected between U-shaped coil pipe of finned heat exchanger and compressor, for realizing refrigerant circulation of heat exchange system, and the pair of connecting pipe 3 of integrated heat exchange device is respectively extended and connected to refrigerant pipeline.

[0059] Please refer to Figures 1-12 In the embodiment, the heat pump water heater further comprises:

[0060] A unit base (not shown in the figure) as a support structure of the heat pump water heater, the compressor and the heat exchanger are installed on the unit base; a fixed support 4 installed on the unit base for fixedly installing the integrated heat exchange device; a water pipe joint 5 connected to the end of the thinned section 13 for connecting the external water pipe; a temperature sensing unit 6 provided on the water pipe joint 5 for real-time detection of the water temperature at the connection between the pipe body 1 of the integrated heat exchange device and the external water pipe at both ends (i.e. the inlet and outlet water ends).

[0061] Please refer to Figures 1-12 As a preferred embodiment of the embodiment, the fixed support 4 is U-shaped, including a support bottom plate 41 and a pair of support side plates 42 respectively connected vertically to both ends of the support bottom plate 41, the pipe body 1 of the integrated heat exchange device is supported on the support bottom plate 41 and is fixedly connected between the support bottom plate 41 and the pair of support side plates 42, a plurality of mounting holes are formed on the support bottom plate 41, and the fixed support 4 together with the integrated heat exchange device is fixedly installed on the unit base by screw fasteners passing through the mounting holes and corresponding fixed holes on the unit base.

[0062] Please refer to Figures 1-12 As a more preferred embodiment of the embodiment, the screw fastener is preferably a screw or a bolt.

[0063] Please refer to Figures 1-12 As a preferred embodiment of the embodiment, according to the actual needs of the heat pump water heater for the heat exchange length and spatial structure layout of the pipe body 1 of the integrated heat exchange device, the extension direction of the main section 14 of the pipe body 1 is helically wound in the vertical spiral direction, and the extension direction of the thinned section 13 of the pipe body 1 is a horizontal straight line.

[0064] Please refer to Figures 1-12 As a more preferred embodiment of the embodiment, the temperature sensing unit 6 is a temperature sensing assembly, including a mounting sleeve 61 installed on the thinned section 13 and a temperature sensing bag (not shown in the figure) installed in the mounting sleeve 61.

[0065] Please refer to Figures 1-12 As a more preferred embodiment of the embodiment, the water pipe joint 5 is a flange joint sleeved on the end of the thinned section 13, the joint inner hole of the flange joint is connected in communication with the heat exchange inner hole 11 inside the thinned section 13, and the outer surface of the flange joint is provided with a mounting flange 51 for sealingly connecting the joint inner hole with the external water pipe connected to the terminal water engineering equipment.

[0066] Please refer to Figures 1-12 Figures 1-12As a more preferred embodiment of the present embodiment, the unit base is in the form of a rectangular chassis, and the top of the unit base is sequentially and spacedly provided with a heat exchanger mounting position, a compressor mounting position and an integrated heat exchange device mounting position along the length direction of the unit base, respectively for mounting the fixing brackets 4 for the heat exchanger, the compressor and the support integrated heat exchange device. The bottom of the unit base is respectively provided with a damping foot (not shown in the figure) corresponding to the compressor and the integrated heat exchange device, for buffering the heat pump water heater during operation of the unit of the heat pump water heater, so as to reduce the overall vibration and noise of the heat pump water heater during operation.

[0067] The integrated heat exchange device can solve the problems of small heating capacity of a single pipe and excessive refrigerant charging amount of a conventional double-pipe heat exchanger. The metal heat exchange inner pipe and the outer pipe are integrated into a pipe body by hot extrusion process. The pipe length can be customized according to the actual design requirements of the heat pump water heater. The system working fluid heat exchange adopts a multi-micropore flow channel with small space volume, which can effectively reduce the refrigerant charging amount of the heat exchange system, thereby reducing the pressure loss of the heat exchange system, and further realizing the effects of reducing the compression ratio of the compressor, reducing energy consumption, optimizing oil return and the like, and ensuring the performance stability and reliability of the heat pump water heater. Meanwhile, the integrated pipe body is additionally provided with a tooth-shaped protruding structure on the inner side of the pipe body and the inner circumferential wall of each micropore of the outer layer of the pipe body, so as to enhance the heat exchange effect.

[0068] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An integrated heat exchange device, characterized by, The application relates to an integrated heat exchange device. The integrated heat exchange device comprises: an integrated pipe body (1), the middle part of the pipe wall thickness direction of the pipe body (1) is provided with a plurality of heat exchange micro-holes (12) penetrating through the pipe body (1) along the axial direction of the pipe body (1), the inner hole wall of the heat exchange inner hole (11) of the pipe body (1) is provided with a plurality of first protruding structures (111), the heat exchange micro-hole (12) is internally provided with a second protruding structure (121); the two ends of the pipe body (1) are reserved to cut off the thinning section (13) of the outer layer of the pipe body (1) provided with the heat exchange micro-hole (12), and the pipe body (1) forms a main body section (14) provided with the heat exchange micro-hole (12) between a pair of thinning sections (13) at the two ends of the pipe body (1); A sealing pipe sleeve (2) is sleeved on the thinning section (13), the inner side wall of the sealing pipe sleeve (2) and the thinning section (13) form a confluence cavity (21) communicating with the heat exchange micro-holes (12) of the main body section (14), and the sealing pipe sleeve (2) is provided with a confluence hole (22) communicating with the confluence cavity (21); A connecting pipe (3) is communicated with the confluence hole (22) and used for being connected with a refrigerant pipeline of a heat exchange system.

2. The integrated heat exchanger of claim 1, wherein The first protruding structure (111) is a first protruding tooth, and the first protruding tooth is arranged on the inner hole wall of the pipe body (1) and extends along the axial direction of the pipe body (1); The second protruding structure (121) is a second protruding tooth, and the second protruding tooth is arranged on the hole wall of the heat exchange micro-hole (12) and extends along the axial direction of the pipe body (1).

3. The integrated heat exchanger of claim 2, wherein The inner hole wall of the pipe body (1) is uniformly and spacedly provided with a plurality of first protruding teeth along the circumferential direction of the pipe body (1), and the pipe body (1) is uniformly and spacedly provided with a plurality of heat exchange micro-holes (12) along the circumferential direction of the pipe body (1).

4. The integrated heat exchanger of claim 3, wherein The cross section of the heat exchange micro-hole (12) is rectangular, and the second protruding tooth is arranged on one side hole wall of the heat exchange micro-hole (12) close to the inner hole wall of the pipe body (1).

5. The integrated heat exchanger of claim 1, wherein One end of the sealing pipe sleeve (2) is welded on the thinning section (13), and the other end of the sealing pipe sleeve (2) is welded on the main body section (14).

6. The integrated heat exchanger of claim 1, wherein The length of the thinning section (13) is 30-200 mm.

7. The integrated heat exchanger of any one of claims 1-6, wherein, The pipe body (1) is integrally hot extruded by a metal inner pipe and a metal outer pipe, and the inner side of the metal inner pipe is provided with the first protruding structure (111).

8. The integrated heat exchanger of claim 7, wherein The outer side wall of the metal inner pipe is provided with the second protruding structure (121), the inner side of the metal outer pipe is provided with a groove matched with the second protruding structure (121), and the groove is combined with the outer side wall of the metal inner pipe to form the heat exchange micro-hole (12) covering the second protruding structure (121) when the metal inner pipe and the metal outer pipe are integrally hot extruded.

9. A heat pump water heater, the heat pump water heater's heat exchange system comprising a compressor, a heat exchanger, characterized in that, The application further relates to the integrated heat exchange device, the connecting pipe (3) is used for being connected with the refrigerant pipeline of the heat exchange system, and the end of the thinning section (13) is used for being connected with an external water pipe.

10. The heat pump water heater of claim 9, wherein, The application further relates to: A unit base, the compressor and the heat exchanger are installed on the unit base; A fixed support (4) is installed on the unit base and used for fixedly installing the integrated heat exchange device; A water pipe joint (5) is connected with the end of the thinning section (13) and used for connecting the external water pipe; A temperature sensing unit (6) is arranged on the water pipe joint (5).

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