EP3974742A1 - Heat pump water heater and air supply structure thereof - Google Patents
Heat pump water heater and air supply structure thereof Download PDFInfo
- Publication number
- EP3974742A1 EP3974742A1 EP20215242.7A EP20215242A EP3974742A1 EP 3974742 A1 EP3974742 A1 EP 3974742A1 EP 20215242 A EP20215242 A EP 20215242A EP 3974742 A1 EP3974742 A1 EP 3974742A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- housing
- cavity
- casing
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 27
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 11
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 16
- 230000009467 reduction Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000011900 installation process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 12
- 229920000742 Cotton Polymers 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000001668 ameliorated effect Effects 0.000 description 3
- 238000010923 batch production Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Images
Classifications
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- 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
- F24H4/04—Storage 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
- 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
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
Definitions
- the present disclosure belongs to the field of heat pump water heaters, and in particular relates to a heat pump water heater and an air supply structure of the heat pump water heater.
- An air supply structure of a heat pump water heater in the prior art is complex, includes a fan, a volute and associated supporting and connecting parts, and is cumbersome in installation process and low in installation efficiency.
- a fan for the installation of the fan and the volute, corresponding supporting structures need to be designed, and connection and fastening are achieved by means of screws.
- the installation process is complicated and the structural parts are large in number, thus increasing installation difficulty and reducing the overall reliability.
- some types of heat pump water heaters have higher requirements on air supply structures, for example, integrated air guiding type air-energy heat pump water heaters.
- An integrated air guiding type air-energy heat pump water heater is typically installed in the indoor environment. During working of the water heater, an air duct discharges cold air out of a room, and the cold air is prevented from being making contact with indoor air for causing a drop in indoor temperature and affecting the user's comfort.
- the integrated air guiding type air-energy heat pump water heater requires the air duct to have good sealing and heat insulation effects, to only exchange heat with outdoor air without affecting the temperature of indoor air during working.
- the integrated air guiding type air-energy heat pump water heater also requires the air duct to have good sound insulation and noise reduction effects as the integrated air guiding type air-energy heat pump water heater is placed indoors.
- Chinese Patent Application No. CN201811608629.9 discloses an air duct structure and belongs to the technical field of water heaters.
- the air supply structure comprises a volute, an air guiding housing and an exhaust ring.
- the air outlet end of the volute communicates with the air inlet end of the air guiding housing; an air blocking piece is arranged on the edge of the periphery of the volute.
- the air outlet end of the air guiding housing communicates with an inner arc surface of the exhaust ring.
- the periphery of the exhaust ring is provided with air guiding fins which are arc-shaped and are all bent to the same side.
- the air duct structure in the above solution comprises a volute structure, which is complicated in both structure and production and assembly processes. And the fan is arranged inside the volute, and connecting parts such as screws need to be used for fixing during assembling of the fan and the volute, so that the installation process is complicated.
- the air duct cannot play the role of heat preservation and heat insulation effects well.
- the technical problem to be solved by the present disclosure is to overcome the deficiencies of the prior art and to provide an air supply structure of a heat pump water heater, which is simple in structure, convenient to install, and has good heat insulation and noise reduction effects.
- Another object of the present disclosure is to provide a heat pump water heater provided with the air supply structure.
- An air supply structure of a heat pump water heater includes a fan and a casing.
- the casing includes a first housing provided with a first cavity and a second housing provided with a second cavity.
- the casing is internally provided with a chamber formed by the first cavity and the second cavity.
- the first housing is matched with the second housing to clamp the fan in the chamber.
- the casing of the air supply structure is composed of two housings, compared with the integrated housing in the prior art, the two housings can be installed in steps, thus reducing the installation difficulty and simplifying the installation process.
- the fan is clamped in the chamber, instead of achieving the connection between the fan and the casing using screws or connectors in the prior art, thus simplifying the installation structure, reducing the number of installation parts, and reducing the production costs.
- the chamber includes a clamping groove for clamping the fan and an air cavity for forming an air path for the fan and provided with an air inlet and an air outlet.
- the clamping groove and the air inlet are opposite arranged in an axial direction of the fan.
- the chamber can both guarantee normal operation of the fan and provide support for the fan, thus improving the stability of the fan while not impeding operation of the fan.
- a supporting portion used for supporting the fan is set in the form of a clamping groove, and instead of fixing of the fan and the casing using connecting parts such as screws in the prior art, thus the installation speed is accelerated, the number of installation parts is reduced, and the production cost is reduced.
- the clamping groove is formed on an inner wall of the first cavity or an inner wall of the second cavity.
- the clamping groove is formed by combining a first groove body formed on an inner wall of the first cavity and a second groove body formed on an inner wall of the second cavity.
- the arrangement form of the clamping groove can be selected according to the actual situation for fixing the fan.
- the air inlet is formed on the first housing or the second housing.
- the air inlet is formed by combining a first air hole formed on the first housing and a second air hole formed on the second housing; the first air hole is communicated with the first cavity, and the second air hole is communicated with the second cavity.
- the fan includes a working portion and a clamping portion.
- the working portion includes a motor and an impeller. And the clamping portion is embedded in the clamping groove, and the motor is mounted on the clamping portion.
- the fan can be fixed on the casing and can be guaranteed to drive the impeller to rotate normally in a steady state.
- the casing is provided with an air guiding structure for guiding air into the air cavity through the air inlet.
- the air guiding structure is an air guiding chamber with an opening.
- the air guiding portion is set in the form of an air guiding chamber with an opening, which increases the air guiding amount and improves the efficiency of air gathering.
- the air guiding chamber is formed on the first housing or the second housing.
- the air guiding chamber is formed by combining a first air concave part formed on the first housing and a second air concave part formed on the second housing.
- first housing is provided with a first connecting portion
- second housing is provided with a second connecting portion.
- the first connecting portion is connected with the second connecting portion for connecting the first housing with the second housing.
- the first connecting portion is in inserted connection or clamped connection with the second connecting portion for connecting the first housing with the second housing.
- the connecting portions positioned on the two housings connect the two housings together to form the casing, thus ensuring the integration of the casing, preventing the air inside the air cavity from escaping from the joint to affect the tightness and stability of the air supply structure.
- first housing and the second housing are separately formed by foaming a thermoplastic foamed material.
- the thermoplastic foamed material includes at least one of a plastic foamed material and a rubber foamed material.
- the first housing and the second housing are formed by foaming the thermoplastic foamed material, thus avoiding complex assembly between parts, simplifying the assembly process of the casing, improving the efficiency of batch production, and omitting associated connecting parts for connection.
- foamed plastic and foamed rubber have good heat insulation and noise reduction effects, can effectively separate the inside environment from the outside environment of the air cavity, can prevent heat exchange between the air inside the air cavity and the indoor air to cause a drop in the temperature of the indoor environment, and can prevent the adverse effect caused to the user by the noise generated by the fan.
- the casing made of the foam material is light in weight, installation and transportation are facilitated, and the weight of the whole machine is also effectively reduced.
- a heat pump water heater is provided with the air supply structure.
- the present disclosure has the following beneficial effects compared with the prior art.
- connection should be broadly understood, e.g., it can be fixed connection or detachable connection or integral connection, can also be mechanical connection or electrical connection, and can also be direct connection or indirect connection through a medium.
- connection should be broadly understood, e.g., it can be fixed connection or detachable connection or integral connection, can also be mechanical connection or electrical connection, and can also be direct connection or indirect connection through a medium.
- connection should be broadly understood, e.g., it can be fixed connection or detachable connection or integral connection, can also be mechanical connection or electrical connection, and can also be direct connection or indirect connection through a medium.
- a heat pump water heater of the present disclosure includes a heat exchanger 14, a fixing seat 11 and an air supply structure.
- the air supply structure includes a fan 10 and a casing 12.
- the casing 12 includes a first housing 1 and a second housing 2.
- the first housing 1 is provided with a first cavity 13, the second housing 2 is provided with a second cavity 23, and the first cavity 13 and the second cavity 23 cooperatively define a chamber.
- the first housing 1 cooperates with the second housing 2 to clamp the fan 10 in the chamber.
- the chamber includes a clamping groove and an air cavity.
- the clamping groove is used for clamping the fan 10; and the air cavity is used for forming an air path for the fan 10.
- the air cavity is provided with an air inlet 6 and an air outlet 9; the clamping groove and the air inlet 6 are opposite arranged in an axial direction of the fan 10.
- the clamping groove is formed on the inner wall of the first cavity 13 or the inner wall of the second cavity 23.
- the clamping groove is formed by combining a first groove body 15 formed on the inner wall of the first cavity 13 and a second groove body 25 formed on the inner wall of the second cavity 23.
- the first groove body 15 is of insertion groove structure formed on the inner wall of the first cavity 13
- the second groove body 25 is of insertion groove structure formed on the inner wall of the second cavity 23.
- An opening, for clamping the fan, of the first groove body 15 is consistent with an open end of the first cavity 13 in orientation
- an opening, for clamping the fan, of the second groove body 25 is consistent with an open end of the second cavity 23 in orientation.
- the air inlet 6 can be formed only on the first housing 1 or the second housing 2.
- the air inlet 6 can also be formed by combining a first air hole 16 formed on the first housing 1 and a second air hole 26 formed on the second housing 2.
- the first air hole 16 is communicated with the first cavity 13, and the second air hole 26 is communicated with the second cavity 23.
- the clamping groove is preferably a sunken cavity in one side wall of the air cavity, and the air cavity is communicated with the clamping groove.
- the first air hole 16 and the second air hole 26 are respectively notches located at an open end of the first cavity 13 and the second cavity 23.
- a shape of the air inlet 6 can be designed as desired, and can be circular, square, oval, and the like.
- the fan 10 includes a working portion including and a clamping portion 101.
- the working portion includes a motor and an impeller 102.
- the clamping portion 101 is embedded in the clamping groove.
- the motor is mounted on the clamping portion 101. One end of the motor is fixed by the clamping portion 101, and then the motor drives the impeller 102 to rotate.
- the impeller 102 is arranged at a port of the air inlet 6 for extracting air at the air inlet 6.
- the impeller 102 is located between the clamping portion 101 and the air inlet 6.
- the casing 12 is provided with an air guiding structure for guiding air into the air cavity through the air inlet 6.
- the air guiding structure can be an air guiding chamber 7 with an opening.
- the air guiding chamber 7 is formed on the first housing 1 or the second housing 2.
- the air guiding chamber 7 is formed by combining a first air concave part 17 formed on the first housing 1 and a second air concave part 27 formed on the second housing 2.
- the air guiding structure is arranged outside a side wall, provided with the air inlet 6, of the casing 12, and is located around the air inlet 6, ensuring that air discharged from the heat exchanger 14 of the heat pump water heater can enter the air inlet 6 as much as possible.
- the casing 12 is integrally connected with the air guiding structure.
- the air guiding chamber 7 can be a chamber formed by a protruding plate structure on a side wall of the first housing 1 and/or the second housing 2, or a chamber formed by a plate structure extending from an adjacent wall of the side wall towards the air inlet direction.
- the first housing 1 is provided with a first connecting portion 18, and the second housing 2 is provided with a second connecting portion 28.
- the first connecting portion 18 is connected with the second connecting portion 28 to connect the first housing 1 with the second housing 2.
- the first connecting portion 18 is in inserted connection or clamped connection with the second connecting portion 28 to connect the first housing 1 with the second housing 2.
- the structure of the connecting portion has a variety of forms, including a buckle structure, a hook structure, a screw structure, an inserting structure, and the like.
- the first housing 1 and the second housing 2 are separately formed by foaming a thermoplastic foamed material.
- the thermoplastic foamed material includes at least one of a plastic foamed material and a rubber foamed material.
- the thermoplastic foamed material may be an expanded polypropylene material (an EPP material for short) or an expanded polystyrene material (an EPS material for short) or the like.
- the first housing 1 and second housing 2 can be formed integrally by directly foaming plastic foamed materials according to the design graphics of the first housing 1 and the second housing 2 respectively, without connection by connecting parts.
- Installation method first clamping the clamping portion 101 of the fan 10 into the second groove body 25 of the second housing 2 correspondingly, placing the working portion of the fan 10 into the second cavity 23, then enabling the first groove body 15 of the first housing 1 to sleeve the clamping portion 101 from an upper part, then buckling all portions of the first housing 1 with all portions of the second housing 2 in a one-to-one matching manner correspondingly, and finally connecting the first housing 1 with the second housing 2 via the connecting portions to form a complete casing 12.
- an air supply structure of a heat pump water heater includes a fan 10 and a casing 12.
- the casing 12 includes a first housing 1 and a second housing 2.
- the first housing 1 is connected to the second housing 2 in an up-down manner so that the first housing 1 is arranged at the upper part of the second housing 2 when the first housing 1 is to be connected with the second housing 2.
- the first housing 1 is provided with a first cavity 13
- the second housing 2 is provided with a second cavity 23.
- the first cavity 13 and the second cavity 23 are combined to form a chamber of which a cross section is rectangular.
- the chamber includes an air cavity and a clamping groove formed on an inner wall of the air cavity by recessing.
- the clamping groove is formed by combining a first groove body 15 formed on the inner wall of the first cavity 13 and a second groove body 25 formed on the inner wall of the second cavity 23.
- One side wall of an open end of the first cavity 13 is provided with a first air hole 16 of a semi-circular notch structure.
- One side wall of an open end of the second cavity 23 is provided with a second air hole 26 of a semi-circular notch structure. The first air hole 16 and the second air hole 26 are combined to form a circular air inlet 6.
- the fan 10 includes a clamping portion 101 and a working portion connected to the clamping portion 101.
- the working portion includes a motor and an impeller 102, and the motor is mounted on the clamping portion 101.
- the working portion is placed in the air cavity, and the clamping portion 101 is clamped into the clamping groove for supporting the fan 10.
- end faces of open ends of the cavities of the first housing 1 and the second housing 2 are provided with concave chambers respectively.
- the concave chambers are combined to form a wiring hole.
- the clamping portion 101 is also provided with a wiring hole. Wire is connected to the motor of the fan 10 through the wiring holes.
- a side wall, provided with the first air hole 16, of the first housing 1 is provided with a first air concave part 17.
- the first air concave part 17 is of an open structure, and an opening faces the open end of the first cavity 13 and the heat exchanger 14.
- the first air concave part 17 encloses the side wall on its three sides.
- a side wall, provided with the second air hole 26, of the second housing 2 is provided with a second air concave part 27.
- the second air concave part 27 is of an open structure, and an opening faces the open end of the second cavity 23 and the heat exchanger 14.
- the second air concave part 27 encloses the side wall on its three sides.
- Two air concave parts cooperate to be buckled onto the heat exchanger 14 of the heat pump water heater for guiding air discharged from the heat exchanger 14 into the air cavity from the air inlet 6 (see Fig. 6 ).
- the clamping groove is composed of two groove bodies formed on two cavities together.
- the stability of the casing 12 is improved to facilitate support of the fan 10 by the casing 12 to provide a more secure connection between the fan 10 and the casing 12.
- the air guiding chamber 7 is formed by combining two air concave parts formed on the first housing 1 and the second housing 2 to draw air into the air cavity as much as possible, and the air guiding effect of the casing 12 is improved to facilitate air gathering.
- an air supply structure of a heat pump water heater includes a fan 10 and a casing 12.
- the fan 10 includes a clamping portion 101 and a working portion, and the working portion includes an impeller 102 and a motor.
- the motor is arranged in the middle of the clamping portion 101 via a positioning device, and the impeller 102 is connected to the motor and rotates under a driving action of the motor.
- a fan cover 1021 is arranged on blades of the impeller 102, sleeves the peripheries of the blades and rotates along with the blades.
- the impeller 102 rotates under the driving of the motor to extract air through the air inlet 6.
- the flowing path of the air is from the air inlet 6 to the blades through the fan cover 1021, and into the air cavity through gaps between the blades under rotation of the blades. Since the fan cover 1021 rotates with the blades, the fan cover 1021 is arranged at a port, facing the air cavity, of the air inlet 6 for receiving air from the air inlet 6 when the fan 10 is installed.
- An outer diameter of the fan cover 1021 is smaller than a diameter of the air inlet 6.
- the fan cover 1021 is preferably of a circular structure.
- the clamping portion 101 is a fan fixing plate arranged at an end far away from the fan cover 1021, and the fan fixing plate is polygonal in shape.
- the clamping groove is of a groove structure in the air cavity, and communicates with the air cavity, and the groove structure is matched with the fan fixing plate in shape to clamp the fan fixing plate into the chamber of the casing 12.
- an air outlet 9 is formed in the first housing 1, is opposite to the first cavity 13.
- the air outlet 9 faces a radial direction of the fan 10, and communicates with the air cavity for discharging the air in the air cavity out of the air supply structure.
- the air supply structure is also provided with an air discharge pipeline in matched connection with the air outlet 9 for further discharging the air at the air outlet 9 out of the chamber.
- the fan cover 1021 is arranged at the air inlet 6 and has a certain air gathering action to assist the blades in extracting air from the air inlet 6 to a certain extent. And in addition, the circular fan cover 1021 can reduce the resistance of the air flow and reduce the energy consumption.
- an air supply structure of a heat pump water heater includes a fan 10 and a casing 12.
- the casing 12 includes a first housing 1 and a second housing 2.
- the first housing 1 is provided with a first connecting portion 18, and the second housing 2 is provided with a second connecting portion 28.
- Multiple groups of the first connecting portion and the second connecting portion are arranged on the first housing 1 and the second housing 2.
- the first connecting portions 18 and the second connecting portions 28 are arranged at a connected end of the first housing 1 and a connected end of the second housing 2 respectively.
- the first connecting portions 18 and the second connecting portions 28 are connected by means of insertion.
- the connecting portions include bumps and grooves.
- the first connecting portions 18 are respectively a groove structure formed in an end surface of an open end of the first cavity 13, a bump structure arranged on the first air concave part 17 at two sides of the first cavity 13, and a bump structure arranged on the middle part of an outer wall of the first housing 1.
- the second connecting portions 28 are matched with the first connecting portions 18 in position and are respectively a bump structure arranged on an end surface of an open end of the second cavity 23, a groove structure formed in the second air concave part 27 at two sides of the second cavity 23, and a groove structure formed in the middle part of an outer wall of the second housing 2.
- first housing 1 is buckled to the second housing 2 to form the complete casing 12, which further prevent the air in the air cavity from escaping from a junction of the open end of the first cavity 13 and the open end of the second cavity 23 to affect the sealability of the casing 12.
- connecting portions which are arranged at four positions, namely the left, middle and right of the first housing 1 and the second housing 2 and the end faces of the open ends of the two cavities respectively, for ensuring that the two connecting portions can firmly connect the first housing 1 and the second housing 2 to form a complete casing 12, and ensuring the stability and tightness of the casing 12.
- first connecting portions 18 and the second connecting portions 28 are set in the structural form of bumps and grooves, so that when the first housing 1 is connected to the second housing 2, it is only necessary to correspondingly insert the bumps into the matched grooves, thereby allowing convenient disassembly while ensuring the connecting effect of the first housing 1 and the second housing 2.
- an installation structure of an air supply structure of a heat pump water heater includes the air supply structure, a heat exchanger 14 and a fixing seat 11 for fixing the air supply structure.
- the air supply structure includes a casing 12, and the casing 12 includes a second housing 2 arranged on the fixing seat 11. And the second housing 2 is preferably connected to the fixing seat 11 by clamping and inserting.
- a bottom wall of the second housing 2 is provided with a connecting part for being connected with the fixing seat 11.
- the connecting part is preferably of a convex-concave matched connection structure of bump and groove.
- an air supply structure of a heat pump water heater includes a casing 12.
- the casing 12 includes a first housing 1 and a second housing 2 that are formed by directly foaming an expanded polypropylene material (an EPP material for short).
- the shape of an outer wall of the casing 12 is matched with the shape of an inner wall of a shell for covering the heat pump system, for preventing a situation that perfect buckling cannot be achieved due to mismatch in the shape of the outer wall of the casing 12 when the shell is used for covering the heat pump system.
- the processing process is complicated by the need to combine and connect the various parts during the production and processing of the casing, and there is also a risk of loosening and disjointing the connection relationship between the various parts of the casing, thus reducing the stability of the casing.
- heat insulation cotton is also required to be pasted to an inner side wall of the casing for heat insulation and noise reduction.
- the heat insulation cotton is less effective in heat insulation and noise reduction effects and is prone to fall off during installation.
- the assembly process among various parts is complicated and less efficient, thus affecting the entire production cycle.
- the first housing 1 and the second housing 2 of the casing 12 are formed by directly foaming an expanded polypropylene material, thus avoiding complex assembly of parts, simplifying the assembly process of the air supply structure, improving the efficiency of batch production, omitting associated connecting parts for connection, and simplifying the production process of the air supply structure.
- the expanded polypropylene material (an EPP material for short) has good heat insulation and noise reduction effects, can effectively separate an inside from an outside of the air cavity, can prevent heat exchange between the air inside the air cavity and the indoor air to cause a drop in the temperature of the indoor environment, and can prevent the adverse effect caused to the user by the noise generated by the fan 10.
- the air supply structure is light in weight, installation and transportation are facilitated, and the weight of the whole machine is also effectively reduced.
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Abstract
Description
- The present disclosure belongs to the field of heat pump water heaters, and in particular relates to a heat pump water heater and an air supply structure of the heat pump water heater.
- An air supply structure of a heat pump water heater in the prior art is complex, includes a fan, a volute and associated supporting and connecting parts, and is cumbersome in installation process and low in installation efficiency. For the installation of the fan and the volute, corresponding supporting structures need to be designed, and connection and fastening are achieved by means of screws. The installation process is complicated and the structural parts are large in number, thus increasing installation difficulty and reducing the overall reliability.
- In addition, some types of heat pump water heaters have higher requirements on air supply structures, for example, integrated air guiding type air-energy heat pump water heaters. An integrated air guiding type air-energy heat pump water heater is typically installed in the indoor environment. During working of the water heater, an air duct discharges cold air out of a room, and the cold air is prevented from being making contact with indoor air for causing a drop in indoor temperature and affecting the user's comfort. Thus the integrated air guiding type air-energy heat pump water heater requires the air duct to have good sealing and heat insulation effects, to only exchange heat with outdoor air without affecting the temperature of indoor air during working. At the same time, the integrated air guiding type air-energy heat pump water heater also requires the air duct to have good sound insulation and noise reduction effects as the integrated air guiding type air-energy heat pump water heater is placed indoors.
- However, in an existing air duct, heat insulation cotton is generally pasted to the inner side of a shell for heat insulation and noise reduction, the sealability is poor, the heat insulation cotton is prone to fall off in the pasting process, heat exchange with indoor air is prone to occur, product quality is not easily guaranteed, and user's comfort is impacted. The overall production process has higher requirements on manual installation techniques, thus reducing production speed and affecting the overall production efficiency.
- Chinese Patent Application No.
CN201811608629.9 - The air duct structure in the above solution comprises a volute structure, which is complicated in both structure and production and assembly processes. And the fan is arranged inside the volute, and connecting parts such as screws need to be used for fixing during assembling of the fan and the volute, so that the installation process is complicated. The air duct cannot play the role of heat preservation and heat insulation effects well.
- In view of the above technical defects, the present disclosure is particularly proposed.
- The technical problem to be solved by the present disclosure is to overcome the deficiencies of the prior art and to provide an air supply structure of a heat pump water heater, which is simple in structure, convenient to install, and has good heat insulation and noise reduction effects.
- Another object of the present disclosure is to provide a heat pump water heater provided with the air supply structure.
- In order to solve the above technical problem, the basic idea of the technical solution adopted by the present disclosure is:
An air supply structure of a heat pump water heater includes a fan and a casing. The casing includes a first housing provided with a first cavity and a second housing provided with a second cavity. - The casing is internally provided with a chamber formed by the first cavity and the second cavity.
- The first housing is matched with the second housing to clamp the fan in the chamber.
- By adopting the above solution, the casing of the air supply structure is composed of two housings, compared with the integrated housing in the prior art, the two housings can be installed in steps, thus reducing the installation difficulty and simplifying the installation process. In addition, the fan is clamped in the chamber, instead of achieving the connection between the fan and the casing using screws or connectors in the prior art, thus simplifying the installation structure, reducing the number of installation parts, and reducing the production costs.
- Further, the chamber includes a clamping groove for clamping the fan and an air cavity for forming an air path for the fan and provided with an air inlet and an air outlet. Preferably, the clamping groove and the air inlet are opposite arranged in an axial direction of the fan.
- By adopting the above solution, the chamber can both guarantee normal operation of the fan and provide support for the fan, thus improving the stability of the fan while not impeding operation of the fan. A supporting portion used for supporting the fan is set in the form of a clamping groove, and instead of fixing of the fan and the casing using connecting parts such as screws in the prior art, thus the installation speed is accelerated, the number of installation parts is reduced, and the production cost is reduced.
- Further, the clamping groove is formed on an inner wall of the first cavity or an inner wall of the second cavity. Alternatively, the clamping groove is formed by combining a first groove body formed on an inner wall of the first cavity and a second groove body formed on an inner wall of the second cavity.
- By adopting the above solution, the arrangement form of the clamping groove can be selected according to the actual situation for fixing the fan.
- Further, the air inlet is formed on the first housing or the second housing. Or, the air inlet is formed by combining a first air hole formed on the first housing and a second air hole formed on the second housing; the first air hole is communicated with the first cavity, and the second air hole is communicated with the second cavity.
- Further, the fan includes a working portion and a clamping portion. The working portion includes a motor and an impeller. And the clamping portion is embedded in the clamping groove, and the motor is mounted on the clamping portion.
- By adopting the above solution, the fan can be fixed on the casing and can be guaranteed to drive the impeller to rotate normally in a steady state.
- Further, the casing is provided with an air guiding structure for guiding air into the air cavity through the air inlet. Preferably, the air guiding structure is an air guiding chamber with an opening.
- By adopting the above solution, due to the arrangement of the air guiding structure, air can be gathered and enters the air cavity through the air inlet, and the air guiding portion is set in the form of an air guiding chamber with an opening, which increases the air guiding amount and improves the efficiency of air gathering.
- Further, the air guiding chamber is formed on the first housing or the second housing. Alternatively, the air guiding chamber is formed by combining a first air concave part formed on the first housing and a second air concave part formed on the second housing.
- Further, the first housing is provided with a first connecting portion, the second housing is provided with a second connecting portion. The first connecting portion is connected with the second connecting portion for connecting the first housing with the second housing. Preferably, the first connecting portion is in inserted connection or clamped connection with the second connecting portion for connecting the first housing with the second housing.
- By adopting the above solution, the connecting portions positioned on the two housings connect the two housings together to form the casing, thus ensuring the integration of the casing, preventing the air inside the air cavity from escaping from the joint to affect the tightness and stability of the air supply structure.
- Further, the first housing and the second housing are separately formed by foaming a thermoplastic foamed material. Preferably, the thermoplastic foamed material includes at least one of a plastic foamed material and a rubber foamed material.
- By adopting the above solution, the first housing and the second housing are formed by foaming the thermoplastic foamed material, thus avoiding complex assembly between parts, simplifying the assembly process of the casing, improving the efficiency of batch production, and omitting associated connecting parts for connection.
- On the other hand, foamed plastic and foamed rubber have good heat insulation and noise reduction effects, can effectively separate the inside environment from the outside environment of the air cavity, can prevent heat exchange between the air inside the air cavity and the indoor air to cause a drop in the temperature of the indoor environment, and can prevent the adverse effect caused to the user by the noise generated by the fan. In addition, the casing made of the foam material is light in weight, installation and transportation are facilitated, and the weight of the whole machine is also effectively reduced. The disadvantages that in the prior art, heat insulation cotton is used to be pasted to the inner wall of the casing for heat insulation and noise reduction, the effect is poor, the heat insulation cotton is prone to fall off in the pasting process, the product quality cannot be easily guaranteed, and the like are ameliorated.
- A heat pump water heater is provided with the air supply structure.
- After adopting the above technical solution, the present disclosure has the following beneficial effects compared with the prior art.
- 1. The casing of the air supply structure is divided into the first housing and the second housing, in addition, the two housings are connected by the connecting portions to form a complete casing structure after combination, thus facilitating the assembly of the casing and the fan while ensuring integration of the air cavity, the fan and the casing can be quickly connected, the operation is simple and convenient and fast, and the installation process of the air supply structure is simplified.
- 2. The chamber is arranged in the casing, the fan is clamped in the chamber, and the clamping groove of the chamber provides support for the fan instead of connection between the casing and the fan using connecting parts such as bolts in the prior art, so that the air supply structure is simplified, the speed of installation is increased, the efficiency of installation is improved, the number of installation parts is reduced and the cost of production is reduced.
- 3. The casing is formed by foaming the thermoplastic foamed material, thus avoiding complex assembly between parts, simplifying the assembly process of the casing, improving the efficiency of batch production, and omitting associated connecting parts for connection. In addition, heat exchange between the air in the air cavity and the indoor air is prevented, the heat insulation and noise reduction effects of the casing are improved, the weight of the casing is reduced, the disadvantages that in the prior art, heat insulation cotton is used to be pasted to the inner wall of the casing for heat insulation and noise reduction, the effect is poor, the heat insulation cotton is prone to fall off in the pasting process, the product quality cannot be easily guaranteed, and the like are ameliorated.
- Specific embodiments of the disclosure will be described in further detail below in conjunction with the accompanying drawings.
- The accompanying drawings, which form a part of the disclosure, serve to provide a further understanding of the disclosure, and illustrative embodiments of the disclosure and descriptions thereof serve to explain the disclosure, but do not constitute an undue definition of the disclosure. Obviously, the accompanying drawings in the following description are merely some embodiments, and for those of ordinary skill in the art, other accompanying drawings can also be obtained from these accompanying drawings without paying creative labor.
- In the drawings:
-
Fig. 1 is an assembled schematic diagram of an air supply structure for a heat pump water heater of the present disclosure; -
Fig. 2 is a structural schematic diagram of a casing of the present disclosure; -
Fig. 3 is a structural schematic diagram of a first housing of the present disclosure; -
Fig. 4 is a structural schematic diagram of a second housing of the present disclosure; -
Fig. 5 is a structural schematic diagram of a fan of the present disclosure; -
Fig. 6 is an installation structural schematic diagram of an air supply structure for a heat pump water heater of the present disclosure. - In the drawings: 1, first housing; 11, fixing seat; 12, casing; 13, first cavity; 14, heat exchanger; 15, first groove body; 16, first air hole; 17, first air concave part; 18, first connecting portion; 2, second housing; 23, second cavity; 25, second groove body; 26, second air hole; 27, second air concave part; 28, second connecting portion; 6, air inlet; 7, air guiding chamber; 9, air outlet; 10, fan; 101, clamping portion; 102, impeller; 1021, fan cover.
- It needs to be noted that these drawings and written description are not intended to limit the conception scope of the disclosure in any way, but rather to illustrate the concept of the disclosure by reference to specific embodiments for those skilled in the art.
- In order to make the objects, technical solutions and advantages of embodiments of the present disclosure clearer, technical solutions in embodiments will now be clearly and completely described in conjunction with the accompanying drawings in embodiments of the present disclosure, the following embodiments are illustrative of the present disclosure but not intended to limit the scope of the present disclosure.
- In the description of the disclosure, it should be noted that, the terms "upper", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, are merely for ease of description of the disclosure and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore cannot be interpreted as limiting the present disclosure.
- Throughout the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be broadly understood, e.g., it can be fixed connection or detachable connection or integral connection, can also be mechanical connection or electrical connection, and can also be direct connection or indirect connection through a medium. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art in accordance with specific conditions.
- As shown in
Figs. 1 to 6 , a heat pump water heater of the present disclosure includes aheat exchanger 14, a fixingseat 11 and an air supply structure. The air supply structure includes afan 10 and acasing 12. Thecasing 12 includes afirst housing 1 and asecond housing 2. Thefirst housing 1 is provided with afirst cavity 13, thesecond housing 2 is provided with asecond cavity 23, and thefirst cavity 13 and thesecond cavity 23 cooperatively define a chamber. Thefirst housing 1 cooperates with thesecond housing 2 to clamp thefan 10 in the chamber. The chamber includes a clamping groove and an air cavity. The clamping groove is used for clamping thefan 10; and the air cavity is used for forming an air path for thefan 10. The air cavity is provided with an air inlet 6 and anair outlet 9; the clamping groove and the air inlet 6 are opposite arranged in an axial direction of thefan 10. - The clamping groove is formed on the inner wall of the
first cavity 13 or the inner wall of thesecond cavity 23. Or, the clamping groove is formed by combining afirst groove body 15 formed on the inner wall of thefirst cavity 13 and asecond groove body 25 formed on the inner wall of thesecond cavity 23. Thefirst groove body 15 is of insertion groove structure formed on the inner wall of thefirst cavity 13, and thesecond groove body 25 is of insertion groove structure formed on the inner wall of thesecond cavity 23. An opening, for clamping the fan, of thefirst groove body 15 is consistent with an open end of thefirst cavity 13 in orientation, and an opening, for clamping the fan, of thesecond groove body 25 is consistent with an open end of thesecond cavity 23 in orientation. - The air inlet 6 can be formed only on the
first housing 1 or thesecond housing 2. The air inlet 6 can also be formed by combining afirst air hole 16 formed on thefirst housing 1 and asecond air hole 26 formed on thesecond housing 2. Thefirst air hole 16 is communicated with thefirst cavity 13, and thesecond air hole 26 is communicated with thesecond cavity 23. - The clamping groove is preferably a sunken cavity in one side wall of the air cavity, and the air cavity is communicated with the clamping groove.
- In the case of the air inlet 6 being formed by combining the two housings, the
first air hole 16 and thesecond air hole 26 are respectively notches located at an open end of thefirst cavity 13 and thesecond cavity 23. In addition, a shape of the air inlet 6 can be designed as desired, and can be circular, square, oval, and the like. - The
fan 10 includes a working portion including and a clampingportion 101. The working portion includes a motor and animpeller 102. The clampingportion 101 is embedded in the clamping groove. The motor is mounted on the clampingportion 101. One end of the motor is fixed by the clampingportion 101, and then the motor drives theimpeller 102 to rotate. Theimpeller 102 is arranged at a port of the air inlet 6 for extracting air at the air inlet 6. Preferably, theimpeller 102 is located between the clampingportion 101 and the air inlet 6. - The
casing 12 is provided with an air guiding structure for guiding air into the air cavity through the air inlet 6. The air guiding structure can be an air guiding chamber 7 with an opening. The air guiding chamber 7 is formed on thefirst housing 1 or thesecond housing 2. Alternatively, the air guiding chamber 7 is formed by combining a first airconcave part 17 formed on thefirst housing 1 and a second airconcave part 27 formed on thesecond housing 2. The air guiding structure is arranged outside a side wall, provided with the air inlet 6, of thecasing 12, and is located around the air inlet 6, ensuring that air discharged from theheat exchanger 14 of the heat pump water heater can enter the air inlet 6 as much as possible. - Preferably, the
casing 12 is integrally connected with the air guiding structure. - The air guiding chamber 7 can be a chamber formed by a protruding plate structure on a side wall of the
first housing 1 and/or thesecond housing 2, or a chamber formed by a plate structure extending from an adjacent wall of the side wall towards the air inlet direction. - The
first housing 1 is provided with a first connectingportion 18, and thesecond housing 2 is provided with a second connectingportion 28. The first connectingportion 18 is connected with the second connectingportion 28 to connect thefirst housing 1 with thesecond housing 2. Preferably, the first connectingportion 18 is in inserted connection or clamped connection with the second connectingportion 28 to connect thefirst housing 1 with thesecond housing 2. The structure of the connecting portion has a variety of forms, including a buckle structure, a hook structure, a screw structure, an inserting structure, and the like. - The
first housing 1 and thesecond housing 2 are separately formed by foaming a thermoplastic foamed material. The thermoplastic foamed material includes at least one of a plastic foamed material and a rubber foamed material. - The thermoplastic foamed material may be an expanded polypropylene material (an EPP material for short) or an expanded polystyrene material (an EPS material for short) or the like.
- When the
casing 12 is processed, thefirst housing 1 andsecond housing 2 can be formed integrally by directly foaming plastic foamed materials according to the design graphics of thefirst housing 1 and thesecond housing 2 respectively, without connection by connecting parts. - Working principle: air discharged from the
heat exchanger 14 enters the air cavity through the air inlet 6 under the air guiding action of the air guiding chamber 7, and theimpeller 102 of thefan 10 rotates to accelerate flowing of the air in the air cavity so that the air is eventually discharged from theair outlet 9 arranged on the first housing 1 (seeFig. 6 ). - Installation method: first clamping the clamping
portion 101 of thefan 10 into thesecond groove body 25 of thesecond housing 2 correspondingly, placing the working portion of thefan 10 into thesecond cavity 23, then enabling thefirst groove body 15 of thefirst housing 1 to sleeve the clampingportion 101 from an upper part, then buckling all portions of thefirst housing 1 with all portions of thesecond housing 2 in a one-to-one matching manner correspondingly, and finally connecting thefirst housing 1 with thesecond housing 2 via the connecting portions to form acomplete casing 12. - As one implementation mode, as shown in
Figs. 1 to 5 , an air supply structure of a heat pump water heater includes afan 10 and acasing 12. Thecasing 12 includes afirst housing 1 and asecond housing 2. Thefirst housing 1 is connected to thesecond housing 2 in an up-down manner so that thefirst housing 1 is arranged at the upper part of thesecond housing 2 when thefirst housing 1 is to be connected with thesecond housing 2. - As a preferred solution, as shown in
Figs. 2 to 5 , thefirst housing 1 is provided with afirst cavity 13, and thesecond housing 2 is provided with asecond cavity 23. Thefirst cavity 13 and thesecond cavity 23 are combined to form a chamber of which a cross section is rectangular. The chamber includes an air cavity and a clamping groove formed on an inner wall of the air cavity by recessing. The clamping groove is formed by combining afirst groove body 15 formed on the inner wall of thefirst cavity 13 and asecond groove body 25 formed on the inner wall of thesecond cavity 23. - One side wall of an open end of the
first cavity 13 is provided with afirst air hole 16 of a semi-circular notch structure. One side wall of an open end of thesecond cavity 23 is provided with asecond air hole 26 of a semi-circular notch structure. Thefirst air hole 16 and thesecond air hole 26 are combined to form a circular air inlet 6. - The
fan 10 includes a clampingportion 101 and a working portion connected to the clampingportion 101. The working portion includes a motor and animpeller 102, and the motor is mounted on the clampingportion 101. The working portion is placed in the air cavity, and the clampingportion 101 is clamped into the clamping groove for supporting thefan 10. - Further, end faces of open ends of the cavities of the
first housing 1 and thesecond housing 2 are provided with concave chambers respectively. The concave chambers are combined to form a wiring hole. The clampingportion 101 is also provided with a wiring hole. Wire is connected to the motor of thefan 10 through the wiring holes. - Further, a side wall, provided with the
first air hole 16, of thefirst housing 1 is provided with a first airconcave part 17. The first airconcave part 17 is of an open structure, and an opening faces the open end of thefirst cavity 13 and theheat exchanger 14. The first airconcave part 17 encloses the side wall on its three sides. A side wall, provided with thesecond air hole 26, of thesecond housing 2 is provided with a second airconcave part 27. The second airconcave part 27 is of an open structure, and an opening faces the open end of thesecond cavity 23 and theheat exchanger 14. The second airconcave part 27 encloses the side wall on its three sides. Two air concave parts cooperate to be buckled onto theheat exchanger 14 of the heat pump water heater for guiding air discharged from theheat exchanger 14 into the air cavity from the air inlet 6 (seeFig. 6 ). - By adopting the above solution, the clamping groove is composed of two groove bodies formed on two cavities together. The stability of the
casing 12 is improved to facilitate support of thefan 10 by thecasing 12 to provide a more secure connection between thefan 10 and thecasing 12. In addition, the air guiding chamber 7 is formed by combining two air concave parts formed on thefirst housing 1 and thesecond housing 2 to draw air into the air cavity as much as possible, and the air guiding effect of thecasing 12 is improved to facilitate air gathering. - As one implementation mode, as shown in
Figs. 1 to 5 , an air supply structure of a heat pump water heater includes afan 10 and acasing 12. Thefan 10 includes a clampingportion 101 and a working portion, and the working portion includes animpeller 102 and a motor. The motor is arranged in the middle of the clampingportion 101 via a positioning device, and theimpeller 102 is connected to the motor and rotates under a driving action of the motor. Afan cover 1021 is arranged on blades of theimpeller 102, sleeves the peripheries of the blades and rotates along with the blades. Theimpeller 102 rotates under the driving of the motor to extract air through the air inlet 6. The flowing path of the air is from the air inlet 6 to the blades through thefan cover 1021, and into the air cavity through gaps between the blades under rotation of the blades. Since thefan cover 1021 rotates with the blades, thefan cover 1021 is arranged at a port, facing the air cavity, of the air inlet 6 for receiving air from the air inlet 6 when thefan 10 is installed. An outer diameter of thefan cover 1021 is smaller than a diameter of the air inlet 6. Thefan cover 1021 is preferably of a circular structure. - As a preferred solution, the clamping
portion 101 is a fan fixing plate arranged at an end far away from thefan cover 1021, and the fan fixing plate is polygonal in shape. The clamping groove is of a groove structure in the air cavity, and communicates with the air cavity, and the groove structure is matched with the fan fixing plate in shape to clamp the fan fixing plate into the chamber of thecasing 12. - In addition, an
air outlet 9 is formed in thefirst housing 1, is opposite to thefirst cavity 13. Theair outlet 9 faces a radial direction of thefan 10, and communicates with the air cavity for discharging the air in the air cavity out of the air supply structure. - Further, the air supply structure is also provided with an air discharge pipeline in matched connection with the
air outlet 9 for further discharging the air at theair outlet 9 out of the chamber. - By adopting the above solution, the
fan cover 1021 is arranged at the air inlet 6 and has a certain air gathering action to assist the blades in extracting air from the air inlet 6 to a certain extent. And in addition, thecircular fan cover 1021 can reduce the resistance of the air flow and reduce the energy consumption. - As one embodiment, as shown in
Figs. 1 to 5 , an air supply structure of a heat pump water heater includes afan 10 and acasing 12. Thecasing 12 includes afirst housing 1 and asecond housing 2. Thefirst housing 1 is provided with a first connectingportion 18, and thesecond housing 2 is provided with a second connectingportion 28. Multiple groups of the first connecting portion and the second connecting portion are arranged on thefirst housing 1 and thesecond housing 2. - As a preferred solution, four groups of the first connecting portion and the second connecting portion are arranged. The first connecting
portions 18 and the second connectingportions 28 are arranged at a connected end of thefirst housing 1 and a connected end of thesecond housing 2 respectively. The first connectingportions 18 and the second connectingportions 28 are connected by means of insertion. The connecting portions include bumps and grooves. The first connectingportions 18 are respectively a groove structure formed in an end surface of an open end of thefirst cavity 13, a bump structure arranged on the first airconcave part 17 at two sides of thefirst cavity 13, and a bump structure arranged on the middle part of an outer wall of thefirst housing 1. The second connectingportions 28 are matched with the first connectingportions 18 in position and are respectively a bump structure arranged on an end surface of an open end of thesecond cavity 23, a groove structure formed in the second airconcave part 27 at two sides of thesecond cavity 23, and a groove structure formed in the middle part of an outer wall of thesecond housing 2. - Further, sealing glue is coated to the end surface of the open end of the
first cavity 13 and the end surface of the open end of thesecond cavity 23 respectively. Thefirst housing 1 is buckled to thesecond housing 2 to form thecomplete casing 12, which further prevent the air in the air cavity from escaping from a junction of the open end of thefirst cavity 13 and the open end of thesecond cavity 23 to affect the sealability of thecasing 12. - In the above solution, arranging four groups of connecting portions here is merely an implementation mode. The present disclosure does not limit the number of the connecting portions which are arranged at four positions, namely the left, middle and right of the
first housing 1 and thesecond housing 2 and the end faces of the open ends of the two cavities respectively, for ensuring that the two connecting portions can firmly connect thefirst housing 1 and thesecond housing 2 to form acomplete casing 12, and ensuring the stability and tightness of thecasing 12. - In addition, the first connecting
portions 18 and the second connectingportions 28 are set in the structural form of bumps and grooves, so that when thefirst housing 1 is connected to thesecond housing 2, it is only necessary to correspondingly insert the bumps into the matched grooves, thereby allowing convenient disassembly while ensuring the connecting effect of thefirst housing 1 and thesecond housing 2. - As an implementation mode, as shown in
Fig. 6 , an installation structure of an air supply structure of a heat pump water heater includes the air supply structure, aheat exchanger 14 and a fixingseat 11 for fixing the air supply structure. The air supply structure includes acasing 12, and thecasing 12 includes asecond housing 2 arranged on the fixingseat 11. And thesecond housing 2 is preferably connected to the fixingseat 11 by clamping and inserting. A bottom wall of thesecond housing 2 is provided with a connecting part for being connected with the fixingseat 11. The connecting part is preferably of a convex-concave matched connection structure of bump and groove. - As an implementation mode, as shown in
Figs. 1 to 5 , an air supply structure of a heat pump water heater includes acasing 12. Thecasing 12 includes afirst housing 1 and asecond housing 2 that are formed by directly foaming an expanded polypropylene material (an EPP material for short). The shape of an outer wall of thecasing 12 is matched with the shape of an inner wall of a shell for covering the heat pump system, for preventing a situation that perfect buckling cannot be achieved due to mismatch in the shape of the outer wall of thecasing 12 when the shell is used for covering the heat pump system. - The processing process is complicated by the need to combine and connect the various parts during the production and processing of the casing, and there is also a risk of loosening and disjointing the connection relationship between the various parts of the casing, thus reducing the stability of the casing. On the other hand, since some types of heat pump water heaters have higher requirements on the heat insulation and noise reduction functions of the casing of the air supply structure, after the casing is connected and processed by using connecting parts, heat insulation cotton is also required to be pasted to an inner side wall of the casing for heat insulation and noise reduction. The heat insulation cotton is less effective in heat insulation and noise reduction effects and is prone to fall off during installation. And the assembly process among various parts is complicated and less efficient, thus affecting the entire production cycle.
- By adopting the above solution, the
first housing 1 and thesecond housing 2 of thecasing 12 are formed by directly foaming an expanded polypropylene material, thus avoiding complex assembly of parts, simplifying the assembly process of the air supply structure, improving the efficiency of batch production, omitting associated connecting parts for connection, and simplifying the production process of the air supply structure. - On the other hand, the expanded polypropylene material (an EPP material for short) has good heat insulation and noise reduction effects, can effectively separate an inside from an outside of the air cavity, can prevent heat exchange between the air inside the air cavity and the indoor air to cause a drop in the temperature of the indoor environment, and can prevent the adverse effect caused to the user by the noise generated by the
fan 10. In addition, the air supply structure is light in weight, installation and transportation are facilitated, and the weight of the whole machine is also effectively reduced. The disadvantages that in the prior art, heat insulation cotton is used to be pasted to the inner wall of thecasing 12 for heat insulation and noise reduction, the effect is poor, the heat insulation cotton is prone to fall off in the pasting process, the product quality cannot be easily guaranteed, and the like are ameliorated. - The above embodiments are only preferred embodiments of the disclosure, and are not intended to limit the disclosure in any form. Although the disclosure has been disclosed above in terms of preferred embodiments, the embodiments are not used for limiting the disclosure. Any person familiar with this patent, without departing from the scope of the technical solution of the disclosure, can make some changes to the proposed technical contents or modify the embodiments to equivalent embodiments of equivalent variations, the implementation solutions in the above embodiments can be further combined or substituted, any simple changes, equivalent variations, and modifications made to the above embodiments in accordance with the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure still fall within the scope of the technical solution of the present disclosure.
Claims (10)
- An air supply structure of a heat pump water heater, comprising a fan (10) and a casing, wherein the casing comprises,
a first housing (1), provided with a first cavity (13); and
a second housing (2), provided with a second cavity (23);
the casing is internally provided with a chamber formed by the first cavity (13) and the second cavity (23);
the first housing is matched with the second housing to clamp the fan (10) in the chamber. - The air supply structure of the heat pump water heater according to claim 1, wherein the chamber comprises,
a clamping groove, for clamping the fan (10); and
an air cavity, for forming an air path for the fan, and provided with an air inlet and an air outlet;
preferably, the clamping groove and the air inlet (6) are opposite arranged in an axial direction of the fan. - The air supply structure of the heat pump water heater according to claim 2, wherein the clamping groove is formed on an inner wall of the first cavity (13) or an inner wall of the second cavity (23);
or,
the clamping groove is formed by combining a first groove body (15) formed on an inner wall of the first cavity and a second groove body (25) formed on an inner wall of the second cavity. - The air supply structure of the heat pump water heater according to claim 2 or 3, wherein the air inlet (6) is formed on the first housing (1) or the second housing (2);
or,
the air inlet (6) is formed by combining a first air hole (16) formed on the first housing and a second air hole (26) formed on the second housing;
the first air hole (16) is communicated with the first cavity (13), and the second air hole (26) is communicated with the second cavity (23). - The air supply structure of the heat pump water heater according to any one of claims 2 to 4, wherein the fan (10) comprises,
a working portion, comprising a motor and an impeller (102); and
a clamping portion (101), embedded in the clamping groove;
wherein the motor is mounted on the clamping portion. - The air supply structure of the heat pump water heater according to any one of claims 2 to 5, wherein the casing (12) is provided with an air guiding structure for guiding air into the air cavity through the air inlet (6);
preferably, the air guiding structure is an air guiding chamber with an opening. - The air supply structure of the heat pump water heater according to claim 6, wherein the air guiding chamber is formed in the first housing or the second housing;
or,
the air guiding chamber is formed by combining a first air concave part (17) formed in the first housing (1) and a second air concave part (27) formed in the second housing (2). - The air supply structure of the heat pump water heater according to any one of claims 1 to 7, wherein the first housing (1) is provided with a first connecting portion (18), the second housing (2) is provided with a second connecting portion (28), and
the first connecting portion (18) is connected with the second connecting portions (28) for connecting the first housing with the second housing;
preferably, the first connecting portion (18) is in inserted connection or in clamped connection with the second connecting portions (28) for connecting the first housing with the second housing. - The air supply structure of the heat pump water heater according to any one of claims 1 to 8, wherein the first housing (1) and the second housing (2) are separately formed by foaming a thermoplastic foamed material;
preferably, the thermoplastic foamed material comprises at least one of a plastic foamed material and a rubber foamed material. - A heat pump water heater, provided with the air supply structure according to any one of claims 1 to 9.
Applications Claiming Priority (1)
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CN202011011360.3A CN112833544B (en) | 2020-09-23 | 2020-09-23 | Heat pump water heater and air supply structure thereof |
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EP3974742A1 true EP3974742A1 (en) | 2022-03-30 |
EP3974742B1 EP3974742B1 (en) | 2024-07-17 |
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-
2020
- 2020-09-23 CN CN202011011360.3A patent/CN112833544B/en active Active
- 2020-12-17 EP EP20215242.7A patent/EP3974742B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2354709A2 (en) * | 2010-01-21 | 2011-08-10 | STIEBEL ELTRON GmbH & Co. KG | Air/water heat pump for external assembly |
EP2775227A1 (en) * | 2013-03-04 | 2014-09-10 | Viessmann Werke GmbH & Co. KG | Thermal device |
EP3128252A1 (en) * | 2015-08-07 | 2017-02-08 | Vaillant GmbH | Heat pump system |
DE202016003295U1 (en) * | 2016-05-30 | 2016-06-22 | Kermi Gmbh | Housing for the air space of a heat pump installed in an interior |
EP3611440A1 (en) * | 2018-08-14 | 2020-02-19 | Robert Bosch GmbH | Heat pump and blower for a heat pump |
Also Published As
Publication number | Publication date |
---|---|
CN112833544A (en) | 2021-05-25 |
CN112833544B (en) | 2022-12-13 |
EP3974742B1 (en) | 2024-07-17 |
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