CN112443970A - Water heat exchange unit of heat pump system - Google Patents
Water heat exchange unit of heat pump system Download PDFInfo
- Publication number
- CN112443970A CN112443970A CN201910837733.3A CN201910837733A CN112443970A CN 112443970 A CN112443970 A CN 112443970A CN 201910837733 A CN201910837733 A CN 201910837733A CN 112443970 A CN112443970 A CN 112443970A
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- heat exchanger
- water
- double pipe
- exchange unit
- heat exchange
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000004049 embossing Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a water heat exchange unit of a heat pump system, which comprises: a housing having a back panel, side panels, and a front panel; the double-pipe heat exchanger is provided with a water path inlet end and a water path outlet end, the double-pipe heat exchanger forms an inner space by coiling a double pipe, and the double-pipe heat exchanger is fixed on the shell; the electric product box is fixedly arranged in the shell; the water pump is arranged inside the shell and connected to the water path of the sleeve heat exchanger; and an expansion tank disposed in an inner space of the coiled double pipe heat exchanger; wherein the expansion tank is fixed to the double pipe heat exchanger and located in the inner space by fixing means which are fixedly connected to a lower part of the expansion tank and a lower part of the double pipe heat exchanger, respectively, and the electrical equipment box is arranged above the expansion tank and said double pipe heat exchanger. The present invention provides a compact arrangement of water heat exchange units for an air source heat pump system.
Description
Technical Field
The invention relates to the field of heat exchange, in particular to a water heat exchange unit of an air source heat pump system.
Background
An air-source heat pump system is a heat pump system that obtains heat, such as hot water, using air as a low-temperature heat source. Generally, an air source heat pump system is composed of an outdoor unit including an evaporator, a compressor, an expansion valve, and the like, and a water heat exchange unit including a heat exchanger, an expansion tank, an electric heater, a water pump, a controller, and the like. The refrigerant in the air source heat pump system flows in a loop communicating the outdoor unit and the water heat exchange unit, and exchanges heat with air at the outdoor unit side, and then exchanges heat with water at the heat exchanger at the water heat exchange unit side. An expansion tank in the water heat exchange unit is connected to the water circuit.
The sizes of the expansion tank and the heat exchanger are different for air source heat pump systems with different power sizes. For manufacturers of water heat exchange units of produced air source heat pump systems, it would be beneficial to control production costs and warehousing costs to increase the versatility of the components of the water heat exchange units of heat source systems of different power levels. In addition, users desire that the size of the heat pump system be maintained or increased less while the demand for capacity of the heat pump system is becoming higher. It is therefore desirable to be able to arrange expansion tanks and heat exchangers of different specifications in a miniaturized water heat exchange unit housing. On the other hand, it is also desirable that changes in the specifications of the heat exchanger and the expansion tank do not affect the installation of other components in other water heat exchange units.
On the other hand, it is also desired to further enhance the safety and reliability of the use of the components connected to the water path of the water heat exchange unit.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a compact internal arrangement structure of a shell of a water heat exchange unit of an air source heat pump system, and the invention provides the water heat exchange unit of the heat pump system, wherein the water heat exchange unit of the heat pump system comprises: a housing having a back panel, side panels, and a front panel; the double-pipe heat exchanger is provided with a water path inlet end and a water path outlet end, the double-pipe heat exchanger forms an inner space by coiling a double pipe, and the double-pipe heat exchanger is fixed on the shell; the water pump is arranged inside the shell and connected to the water path of the sleeve heat exchanger; and an expansion tank disposed in an inner space of the coiled double pipe heat exchanger; wherein the expansion tank is fixed to the double pipe heat exchanger and located in the inner space by fixing means which are fixedly connected to the lower part of the expansion tank and the lower part of the double pipe heat exchanger, respectively.
According to another aspect of the invention, the water heat exchange unit further comprises an electrical package tank fixedly mounted in the housing and arranged above the expansion tank and the double pipe heat exchanger.
According to another aspect of the invention, the fixing means comprise a first fixing element and a second fixing element, respectively, the first fixing element being fixed to the lower part of the expansion tank and the second fixing element being fixed to the lower part of the double pipe heat exchanger, the first fixing element and the second fixing element being detachably connected.
According to a further aspect of the invention, the first and second fixtures are fixed to the lower portion of the expansion tank and the lower portion of the double pipe heat exchanger, respectively, by welding.
According to a further aspect of the invention, the fixing means comprise a plurality of first fixing elements arranged evenly around the circumference of the expansion tank and a plurality of second fixing elements arranged evenly around the circumference formed by the winding of the double pipe heat exchanger.
According to a further aspect of the invention, at least one of the first fixing elements and at least one of the second fixing elements are provided with snap-in means for mutual snap-in engagement.
According to still another aspect of the present invention, the second fixing member is provided with a handle portion extending from the second fixing member to an outside of the double pipe heat exchanger and extending upward.
According to a further aspect of the invention, a water pump is connected downstream of the outlet end of the double pipe heat exchanger in the direction of the water path of the water heat exchange unit.
According to still another aspect of the present invention, the water heat exchange unit of the heat pump system further includes an electric heater accommodated in the housing, the electric heater being located at one side of the double pipe heat exchanger and connected between the waterway outlet of the double pipe heat exchanger and the water pump.
According to a further aspect of the invention, the inlet end of the double pipe heat exchanger has a water inlet pipe section which is angled away from the back plate towards the front plate in the horizontal level of the inlet end, the angle being equal to or greater than 5 degrees.
According to a further aspect of the invention, the electrical equipment box is arranged next to the top of the double pipe heat exchanger, the expansion tank being completely accommodated in the inner space of the double pipe heat exchanger.
According to yet another aspect of the present invention, a sleeve of a sleeve heat exchanger has an outer sleeve and an inner sleeve having a surface embossing pattern, the embossing pattern of the inner sleeve is formed as embossed teeth having a tooth width of 0.5mm-0.8mm and a tooth height of 0.2mm or more, and adjacent opening angles of the embossed teeth are between 100 degrees and 110 degrees.
According to still another aspect of the present invention, the front plate of the housing has an opening mechanism for opening the housing from the front plate.
According to still another aspect of the present invention, an expansion tank is connected downstream of the electric heater in a water path direction of the water heat exchange unit.
By adopting the water heat exchange unit of the air source heat pump system, the expansion tank is inserted in the double-pipe heat exchanger and supported and fixed by the double-pipe heat exchanger, so that the installation space is saved, and the expansion tank and the double-pipe heat exchanger with larger specifications are suitable for being installed in a smaller shell. Because the electrical equipment box is arranged above the expansion tank and the sleeve heat exchanger, namely the electrical equipment box is arranged on the upper part of the whole water heat exchange unit, the influence of water leakage on the electrical equipment box can be avoided, and the safety of the whole unit is further improved.
The heat exchange quantity can be effectively increased by adopting the embossing pattern of the sleeve, so that the length of a coil pipe of the heat exchanger can be shortened for the sleeve heat exchanger with a specific specification, the overall size of the heat exchanger can be reduced, and the internal space of the shell is saved.
Drawings
Fig. 1 shows a front view of the internal structure of a water heat exchange unit of a heat pump system according to the present invention.
Fig. 2 shows a perspective view of the water heat exchange unit of the heat pump system according to the invention in a disassembled state with the expansion tank outside the double pipe heat exchanger.
Fig. 3 shows another perspective view of the water heat exchange unit of the heat pump system according to the invention, in which the expansion tank has been inserted into the inner space of the double pipe heat exchanger and the water pump assembly is in a disassembled state.
Fig. 4 shows a perspective view of the expansion tank and the double pipe heat exchanger according to the invention in a disassembled state.
Fig. 5 shows a top view of a double pipe heat exchanger according to the invention mounted on a back plate of a housing.
Fig. 6 shows a perspective view of the expansion tank and the fixing means of the double pipe heat exchanger according to the invention in a fitted state.
Fig. 7 shows a perspective view of a fixture on a double pipe heat exchanger, wherein the fixture is provided with a snap mechanism.
Fig. 8 shows a perspective view of an expansion tank with a fixing element, which is also provided with a corresponding snap-in mechanism.
Fig. 9 shows a cross-sectional view of a threaded bushing for use in a bushing heat exchanger.
Figure 10 shows a cross-sectional view of the embossing pattern employed on the sleeve.
Fig. 11 shows a schematic flow path diagram of a water circuit in a water heat exchange unit according to a preferred embodiment of the invention.
Fig. 12 shows a partial perspective view of the expansion tank and waterway connection structure according to the present invention.
List of reference numerals
1 Water Heat exchange Unit
10 outer casing
11 backboard
15 water inlet
16 water outlet
20 casing heat exchanger
25 outer sleeve
26 inner sleeve
30 expansion tank
35 connecting pipe
40 Water pump
50 electric heater
60 electric goods box
200, 200' fixing mechanism
210, 210' first fixing member
211' card slot
215, 215' first vertical tab
216, 216' first radial tab
220, 220' second fixing piece
221' matching card slot
225, 225' second vertical tab
226, 226' second radial tab
227' end piece
228' slot
230' clamping mechanism
300 handle part
Detailed Description
The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the invention.
Fig. 1, 2 and 3 show a front view and a perspective view, respectively, of the internal structure of a water heat exchange unit 1 of an air source heat pump system according to the present invention. The water heat exchange unit 1 comprises a housing 10, the housing 10 having a back plate 11, side plates and a front plate. In these figures, to better illustrate the internal components of the water heat exchange unit 1, the side and front panels of the housing 10 are removed and in fig. 2 the expansion tank 30 is removed independently from the installed position, while in fig. 3 the water pump assembly containing the water pump 40 is in a removed state.
In summary, the water heat exchange unit 1 of the air source heat pump system is provided with a double pipe heat exchanger 20, an expansion tank 30, a water pump 40, an electric heater 50, and an electric product tank 60 inside a housing 10 thereof, and as shown in fig. 1, a water inlet 15 and a water outlet 16 of the water heat exchange unit 1 are located at the bottom of the housing 10, and are arranged side by side.
As shown in fig. 1 to 3, the expansion tank 30 is inserted into an inner space formed by winding the shell pipe of the shell pipe heat exchanger 20, as viewed from a position of a front plate of the casing 10, the electric equipment box 60 is disposed above the expansion tank 30 and the shell pipe heat exchanger 20, the electric heater 50 is disposed on one side of the electric equipment box 60 and the shell pipe heat exchanger 20, and the water pump assembly including the water pump 40 and the attached piping is disposed below the electric heater 50 and the shell pipe heat exchanger 20. The water inlet 15 of the water circuit of the water heat exchange unit is connected to the water inlet pipe section 22 of the double pipe heat exchanger 20, while the water outlet 16 of the water circuit of the water heat exchange unit is connected to the water outlet side of the water pump.
In addition, an auxiliary electrical component box (not shown) is further provided below the double pipe heat exchanger 20 and at the front side of the water pump assembly. The auxiliary electrical package box is generally configured to house a remote control unit and may further be provided with a display unit. Alternatively, the electronics disposed in the electrical equipment box 60 above the double pipe heat exchanger 20 and the auxiliary electrical equipment box below the heat exchanger 20 may be replaced, and the remote control unit may be disposed in the electrical equipment box 60 above the heat exchanger 20.
According to a preferred embodiment of the invention, as shown in fig. 3, the expansion tank 30 is fixed to the double pipe heat exchanger 20 by a fixing mechanism 200, and the double pipe heat exchanger 20 is mounted to the casing 10, in particular to the back plate 11 of the casing 10, by fixing members. In particular, the expansion tank 30 is not directly connected to the housing 10, i.e. the expansion tank 30 is supported inside the housing 10 by the double pipe heat exchanger 20. Therefore, the expansion tank 30 can be completely accommodated in the inner space of the double pipe heat exchanger 20 without any part of the expansion tank 30 being exposed outside the double pipe heat exchanger 20, and the inner surface of the casing 10 does not need to be left with a place to install the expansion tank 30, in which case the electrical equipment box 60 is disposed immediately adjacent to the top of the double pipe heat exchanger 20, thereby further achieving miniaturization of the water heat exchange unit.
It should be understood that it is also possible for part of the expansion tank 30 to protrude from the inner space of the double pipe heat exchanger 20. Preferably, the size of the interior space of the double pipe heat exchanger 20 is substantially matched to the external dimensions of the expansion tank 30, which will help to maximize the utilization of the interior space of the double pipe heat exchanger 20 and correspondingly the utilization of the interior space of the shell 10.
According to a preferred embodiment of the present invention, as shown in fig. 4, the fixing mechanism 200 for fixing the expansion tank 30 includes a first fixing member 210 and a second fixing member 220. The first fixing member 210 is fixed to a lower portion of the expansion tank 30, preferably, on a lateral outer surface of the lower portion of the expansion tank 30. The second fixing member 220 is fixed to a lower portion of the double pipe heat exchanger 20, particularly, to the lowermost pipe around which the heat exchanger 20 is wound. The connection means between the first fixing member 210 and the expansion tank 30 and the connection means between the second fixing member 220 and the double pipe heat exchanger 20 may be generally welded, and the first fixing member 210 and the second fixing member 220 are connected by a detachable connection means, for example, a fastener.
Further, as shown in fig. 4, three first fixing members 210 are installed at the lower portion of the expansion tank 30, each first fixing member 210 is substantially L-shaped, the first vertical tabs 215 of the L-shaped first fixing member 210 are welded to the lateral outer surface of the lower portion of the expansion tank 30, and the first radial tabs 226 extend outward in the radial direction of the cylindrical shape of the expansion tank 30 and are provided with holes for inserting fasteners. The three first fixing members 210 are arranged substantially equally spaced around the outer surface of the expansion tank 30. Correspondingly, three second fixing members 220 are mounted on the lower portion of the tube-in-tube heat exchanger 20, the second fixing members 220 have second vertical tabs 225 and second radial tabs 226 extending radially inward, and the second radial tabs 226 are also provided with holes for inserting fasteners. When the expansion tank 30 is inserted into the inner space of the double pipe heat exchanger 20, the holes in the first fixing member 210 and the holes in the second fixing member 220 may be aligned with each other, and thus may be fixed by means of fasteners (not shown). It should be understood that the number and location of the securing mechanisms 200 are not limited to the preferred embodiment described above and may vary with the size and shape of the expansion tank 30 and the double pipe heat exchanger 20.
Fig. 6-8 show another embodiment of a securing mechanism 200' for securing the expansion tank 30 to the double pipe heat exchanger 20. In this embodiment, the two fixing members 210 'and 220' of the fixing mechanism 200 'are further provided with a snap mechanism 230' which is snapped into each other.
Specifically, as shown in fig. 6 to 8, the fixing mechanism 200 ' of this embodiment also includes a first fixing member 210 ' fixed to the expansion tank 30 and a second fixing member 220 ' fixed to the double pipe heat exchanger 20. The first fixing member 210 'is substantially L-shaped, the first vertical tab 215' is welded to the side surface of the expansion tank 30, while the first radial tab 216 'extends radially outwards and is provided with a hole for receiving a fastener and a catch 211' extending from the side of the first radial tab 216 'to a position substantially in the middle of the tab 216'. The second fixture 220 'has a second vertical tab 225', a second radial tab 226 'extending radially inward, and an end tab 227' extending upward from the end of the radially extending boss. As shown in fig. 7, a matching slot 221 ' is formed between the end piece 227 ' and the second radial tab 226 ', the slot 221 ' also extending to an intermediate position of the end piece 227 ', i.e., the end piece 227 ' is only partially connected to the second radial tab 226 '. In addition, the second radial tab 226 ' of the second fastener 220 ' is provided with a slot 228 ', the slot 228 ' being adapted to align with the aperture of the first fastener 210 ' to receive a fastener.
Preferably, only one first fixture 210 ' and only one second fixture 220 ' may be provided with a matching snapping mechanism 230 '. When the fixing device is installed, the clamping groove 211 'of the first fixing member 210' and the matching clamping groove 221 'of the second fixing member 220' are clamped and positioned with each other, and then the first fixing member 210 'and the second fixing member 220' are fastened together by fasteners. The clamping mechanism 230 'facilitates the positioning of the fixing mechanism 200' before installation, so that the installation operation process is simpler and more convenient.
Further, in order to facilitate the handling of the double pipe heat exchanger 20 or the assembly of the double pipe heat exchanger 20 and the expansion tank 30, the fixing mechanism 200 is particularly integrally provided with a handle portion 300. As shown in fig. 4, in particular, a handle portion 300 is further integrally extended from the second vertical tab 225 of the second fixing member 220, and an upper end of the handle portion 300 is fixed to an upper position of the double pipe heat exchanger 20, for example, by welding.
With the double pipe heat exchanger 20 having three fixing mechanisms 200 shown in fig. 4, only one handle portion 300 is integrally formed with the second fixing member 220 of the fixing mechanism 200, and the other handle portion separately fixes the outside of the heat exchanger 20. When the double pipe heat exchanger 20 is mounted on the back plate 11 of the housing 10, the two handle portions face to the front plate position for easy holding by installation and maintenance personnel. Preferably, the front panel is provided with an opening mechanism (not shown) to facilitate opening of the housing from the front panel for ease of installation and maintenance.
Further, with the water heat exchange unit 1 shown in fig. 1, when the double pipe heat exchanger 20 is installed in the housing 10, the water inlet pipe section 22 thereof is located at a position below the housing 10, and the electric heater 50, the piping, and the like are installed at this height position, and in order to avoid these components, as shown in fig. 5, the water inlet pipe section 22 is inclined at an angle toward the front plate (not shown) of the housing 10 away from the back plate 11, and in particular, in the direction in which the water heat exchange unit is viewed from above, the angle θ between the plane parallel to the back plate and the direction in which the water inlet pipe section 22 extends is 5 degrees or more.
As shown in fig. 9, the jacket of the jacket heat exchanger 20 used in the water heat exchange unit 1 includes an outer jacket tube 25 and an inner jacket tube 26. In particular, the inner jacket tube 26 is an externally ribbed threaded tube having improved heat transfer capability compared to a cylindrical jacket tube that is not externally ribbed. Generally, the refrigerant flows through a space between the outer tube 25 and the inner tube 26, and the water flows through the inside of the inner tube 26, thereby achieving heat exchange between the refrigerant and the water.
The requirements for the heat exchange capacity of the double pipe heat exchanger 20 are different for water heat exchange units 1 of different power specifications. Generally, as the power of the water heat exchange unit 1 increases, the double pipe heat exchanger 20 needs to be lengthened and/or thickened. In order to adapt to the shell 10 of the original low-power water heat exchange unit 1 and improve the heat exchange capacity on the premise of not changing the length and the pipe diameter of the sleeve heat exchanger 20, the inner sleeve 26 in the shape of a screwed pipe is particularly subjected to embossing treatment to further improve the heat exchange capacity, embossing treatment is preferably carried out on the outer wall of the inner sleeve 26 to improve the heat exchange capacity of a refrigerant side, meanwhile, the applicability requirement of water flowing through the inner sleeve 26 is considered, and the problem that the heat exchange capacity is reduced due to the fact that the embossing pattern is blocked by impurities in the water is avoided; the size of the embossing pattern thereof is particularly limited. In particular, as shown in fig. 10, the embossing pattern is in particular an embossing tooth, the individual embossing teeth of the inner sleeve 26 have a tooth width w of 0.5mm-0.8mm and a tooth height H of 0.2mm or more in a direction transverse to the pattern of the embossing teeth, and the adjacent opening angle α of the embossing teeth is between 100 degrees and 110 degrees, and furthermore the thickness of the bottom wall H of the inner sleeve 26 is preferably 0.8mm or more.
Fig. 11 shows a schematic water circuit in the water heat exchange unit 1 according to a preferred embodiment of the present invention. As shown in fig. 11, the water to be heated flows in from the water inlet 15 by the water pump 40 in the water path, then flows through the filter, then enters the double pipe heat exchanger 20 from the water path inlet end of the double pipe heat exchanger 20, where it exchanges heat with the refrigerant from the outdoor unit, then flows out from the water path outlet of the heat exchanger 20, then flows in the electric heater 50, and finally flows out of the water heat exchange unit 1 through the water outlet 16.
A water pump 40 is connected downstream of the outlet end of the double pipe heat exchanger 20 in the flow direction of the water circuit, and more preferably, the water pump 40 is located between the electric heater 50 and the water outlet 16 of the water heat exchange unit 1. The water pump 40 is positioned such that water flowing through the water pump 40 is heated, and thus, adverse effects of freezing at low temperatures on the water pump 40 can be avoided.
In addition, the expansion tank 30 is connected downstream of the outlet end of the double pipe heat exchanger 20, more specifically downstream of the outlet end of the electric heater 50. As shown in fig. 12, a connecting pipe 35 is connected to the bottom of the expansion tank 30 and connected to the outlet end downstream of the electric heater 50. The connection pipe 35 extends horizontally below the double pipe heat exchanger 20 and the electrical connector 50. This connection location helps to reduce the length of the connection piping between the expansion tank 30 and the water circuit.
With the water heat exchange unit 1 of the air source heat pump system according to the present invention, the expansion tank 30 is inserted inside the double pipe heat exchanger 20 and supported and fixed by the double pipe heat exchanger 20, the installation space is saved, the installation method is suitable for installing the expansion tank 30 and the double pipe heat exchanger 20 of larger size in a smaller housing 10, and the miniaturization of the water heat exchange unit 1 is advantageously achieved.
With the fixing mechanisms 200, 200' of the expansion tank 30 and the double pipe heat exchanger 20 according to the invention, when the expansion tank 30 needs to be disassembled, the expansion tank 30 can be drawn out from the lower part of the double pipe heat exchanger 20 only by disassembling the water pump assembly below the expansion tank 30 and the double pipe heat exchanger 20 and then releasing the fixing of the fixing mechanism, so that the disassembly can be completed. Compared with the traditional fixing mode, the expansion tank is very convenient to disassemble.
The heat exchange quantity can be effectively increased by adopting the embossing pattern of the sleeve, so that the length of a coil pipe of the heat exchanger can be shortened for the sleeve heat exchanger with a specific specification, the overall size of the heat exchanger can be reduced, and the internal space of the shell is saved.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.
Claims (14)
1. A water heat exchange unit of a heat pump system, the water heat exchange unit of the heat pump system comprising:
a housing (10) having a back panel, side panels and a front panel;
a double pipe heat exchanger (20) having a waterway inlet end and a waterway outlet end, the double pipe heat exchanger forming an inner space by winding a double pipe, the double pipe heat exchanger being fixed to the housing;
a water pump (40) disposed inside the housing and connected to the water circuit of the double pipe heat exchanger; and
an expansion tank (30) disposed in the interior space of the coiled double pipe heat exchanger;
characterized in that the expansion tank is fixed to the double pipe heat exchanger and located in the inner space by fixing means (200, 200'), which are fixedly connected to a lower part of the expansion tank and a lower part of the double pipe heat exchanger, respectively.
2. The hydrothermal exchange unit of claim 1, further comprising an electrical package tank located in the housing and disposed above the expansion tank and the double pipe heat exchanger.
3. The water heat exchange unit of the heat pump system according to claim 1, wherein the fixing means comprises a first fixing member (210, 210 ') and a second fixing member (220, 220'), respectively, the first fixing member being fixed to a lower portion of the expansion tank and the second fixing member being fixed to a lower portion of the double pipe heat exchanger, the first fixing member and the second fixing member being detachably connected.
4. The water heat exchange unit of the heat pump system according to claim 3, wherein the first fixing member and the second fixing member are fixed to a lower portion of the expansion tank and a lower portion of the double pipe heat exchanger, respectively, by welding.
5. The water heat exchange unit of the heat pump system according to claim 3, wherein the fixing mechanism includes a plurality of first fixing members and a plurality of second fixing members, the plurality of first fixing members are uniformly arranged around the outer circumference of the expansion tank, and the second fixing members are uniformly arranged around the circumference formed by the winding of the double pipe heat exchanger.
6. The water heat exchange unit of the heat pump system according to claim 5, wherein at least one of the first fixing members and at least one of the second fixing members are provided with a snap mechanism that is snapped into each other.
7. The heat exchange unit of a heat pump system according to any one of claims 3 to 6, characterized in that the second fixture is provided with a handle portion (300) extending from the second fixture to the outside of the double pipe heat exchanger and extending upward.
8. The water heat exchange unit of the heat pump system of claim 1, wherein the water pump is connected downstream of the outlet end of the double pipe heat exchanger in a water path direction of the water heat exchange unit.
9. The water heat exchange unit of the heat pump system of claim 8, further comprising an electric heater housed within the housing, the electric heater being located on one side of the double-pipe heat exchanger and connected between the waterway outlet of the double-pipe heat exchanger and the water pump.
10. The water heat exchange unit of the heat pump system of claim 9, wherein the inlet end of the double pipe heat exchanger has a water inlet pipe section that is angled away from the back plate toward the front plate in a horizontal elevation at which the inlet end is located, the angle being greater than or equal to 5 degrees.
11. The water heat exchange unit of the heat pump system according to claim 2, characterized in that the electrical equipment box is arranged next to the top of the double pipe heat exchanger, the expansion tank being completely accommodated in the inner space of the double pipe heat exchanger.
12. The water heat exchange unit of a heat pump system according to claim 1, wherein the sleeve of the sleeve heat exchanger has an outer sleeve and an inner sleeve having a surface embossing pattern, the embossing pattern of the inner sleeve is formed as embossed teeth having a tooth width of 0.5mm-0.8mm and a tooth height of 0.2mm or more, and adjacent opening angles of the embossed teeth are between 100 degrees and 110 degrees.
13. The water heat exchange unit of the heat pump system of claim 1, wherein the front plate of the housing has an opening mechanism that allows the housing to be opened from the front plate.
14. The water heat exchange unit of the heat pump system according to claim 9, wherein the expansion tank is connected downstream of the electric heater in a water path direction of the water heat exchange unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837733.3A CN112443970B (en) | 2019-09-05 | 2019-09-05 | Water heat exchange unit of heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837733.3A CN112443970B (en) | 2019-09-05 | 2019-09-05 | Water heat exchange unit of heat pump system |
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| CN112443970A true CN112443970A (en) | 2021-03-05 |
| CN112443970B CN112443970B (en) | 2023-12-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000055462A (en) * | 1998-08-12 | 2000-02-25 | Dainippon Screen Mfg Co Ltd | Fluid heating apparatus and substrate processing apparatus using the same |
| CN206572742U (en) * | 2016-06-24 | 2017-10-20 | 北京奥林匹亚锅炉有限公司 | Wall hanging electric boiler |
| CN207422663U (en) * | 2017-09-29 | 2018-05-29 | 宁波奥克斯电气股份有限公司 | Air source hot pump water heater |
| CN208154826U (en) * | 2018-05-07 | 2018-11-27 | 广东美的暖通设备有限公司 | Mounting structure and hydraulic module, the heat pump water-heating machine system of expansion drum |
-
2019
- 2019-09-05 CN CN201910837733.3A patent/CN112443970B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000055462A (en) * | 1998-08-12 | 2000-02-25 | Dainippon Screen Mfg Co Ltd | Fluid heating apparatus and substrate processing apparatus using the same |
| CN206572742U (en) * | 2016-06-24 | 2017-10-20 | 北京奥林匹亚锅炉有限公司 | Wall hanging electric boiler |
| CN207422663U (en) * | 2017-09-29 | 2018-05-29 | 宁波奥克斯电气股份有限公司 | Air source hot pump water heater |
| CN208154826U (en) * | 2018-05-07 | 2018-11-27 | 广东美的暖通设备有限公司 | Mounting structure and hydraulic module, the heat pump water-heating machine system of expansion drum |
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| CN112443970B (en) | 2023-12-29 |
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