LU505367B1 - Air source heat pump water heater with economizer arranged in water-side heat exchanger - Google Patents

Air source heat pump water heater with economizer arranged in water-side heat exchanger Download PDF

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Publication number
LU505367B1
LU505367B1 LU505367A LU505367A LU505367B1 LU 505367 B1 LU505367 B1 LU 505367B1 LU 505367 A LU505367 A LU 505367A LU 505367 A LU505367 A LU 505367A LU 505367 B1 LU505367 B1 LU 505367B1
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LU
Luxembourg
Prior art keywords
fixedly connected
water heater
air source
heat pump
pump water
Prior art date
Application number
LU505367A
Other languages
French (fr)
Inventor
Shifeng Yan
Original Assignee
Maanshan Nbwave Thermal Energy Tech Co Ltd
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Publication of LU505367B1 publication Critical patent/LU505367B1/en

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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
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/136—Defrosting or de-icing; Preventing freezing
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • 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
    • F24H9/06—Arrangement of mountings or supports for heaters, e.g. boilers, other than space heating radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0211—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Disclosed is an air source heat pump water heater with an economizer arranged in a water-side heat exchanger, which relates to the technical field of air source heat pump water heaters, and solves a technical problem that frosting appears on a surface of an evaporator when the air source heat pump water heater is used for a long time, which further increase an icing thickness when the frosting is not treated in time, so that the whole water heater cannot operate normally, and secondly, solves a technical problem that a heat exchanger cannot be disassembled and cleaned quickly. A high-temperature and high-pressure refrigerant is conveyed to a surface of an inner sleeve by arranging an evaporator assembly and using an arranged conveying hole to exchange heat and cold with a frosted part on the surface of the inner sleeve, so as to melt the frosted part on the surface of the inner sleeve, to avoid the abnormal operation of the whole water heater due to the thick frosting thickness; and secondly, melted water is discharged by an arranged air inlet notch, to avoid subsequent work from being affected by frosting and icing accumulated inside an outer sleeve.

Description

AIR SOURCE HEAT PUMP WATER HEATER WITH ECONOMIZER
ARRANGED IN WATER-SIDE HEAT EXCHANGER
TECHNICAL FIELD
The present application relates to the technical field of air source heat pump water heaters, and more particularly, to an air source heat pump water heater with an economizer arranged in a water-side heat exchanger.
BACKGROUND
An air source heat pump water heater is a novel high-efficiency energy-saving water heater, which can absorb low-temperature heat in air, and convert the low-temperature heat into high-temperature heat after being compressed by a compressor, so as to increase the water temperature. The air source heat pump water heater can produce the same amount of hot water with a cost which is only one fourth of that of an electric water heater and one third of that of a gas water heater, so that a utilization rate of the air source heat pump water heater is higher than that of an electrically aided solar water heater.
According to the patent with an application number of CN201510047199.8, the patent includes a box body, a columnar water tank arranged in the box body, as well as a fan, an evaporator and a compressor arranged in the box body. The compressor, the fan and the evaporator are arranged between an inner wall of the box body and the water tank in a radial direction of the water tank and are sequentially arranged in a circumferential direction of the water tank. According to the patent, the compressor, the fan and the evaporator are arranged between the inner wall of the box body and the water tank in the radial direction of the water tank and are sequentially arranged in the circumferential direction of the water tank. À space between the box body and the water tank 1s fully utilized, and a cavity does not need to be specially arranged to accommodate the compressor, the fan, the evaporator and the like, so that an overall size of the air source heat pump water heater is reduced, and a user can place the air source heat pump water heater conveniently. The air source heat pump water heater in the application provides a new arrangement mode of the air source heat pump water heater, which makes an internal structure of the air source heat pump water heater more reasonable and more compatible with a home environment. The overall volume of the air source heat pump water heater in the above patent is reduced when being used and installed, which is suitable for small-area installation, but when the air source heat pump water heater is used for a long time, when the air source heat pump water heater is used in a cold winter in the north
China, the evaporator may continuously absorb the heat of the air, so that the air temperature may be lowered, and water in the air may condense on fins of the evaporator to form water droplets. Because an outdoor temperature is too low, the water droplets condensed on the evaporator are easy to frost, so the continued use of the air source heat pump water heater may further increase an icing thickness under frosting conditions, which may eventually lead to the system not operating normally. Therefore, it is necessary to clean the frost on a surface of the evaporator. The above patent does not provide corresponding structures to deal with frosting. Secondly, after a long period of use, a heat exchange pipe inside the heat exchanger may accumulate a layer of scale, which requires the heat exchanger to be disassembled and cleaned. If the heat exchanger cannot be cleaned regularly, it may burst for a plate heat exchanger, and for a double-pipe heat exchanger, an inner pipe of the double-pipe heat exchanger may break, resulting in the failure of a whole heat pump hot water unit.
SUMMARY
The present application aims at providing an air source heat pump water heater with an economizer arranged in a water-side heat exchanger to solve the following technical problems.
Frosting appears on a surface of an evaporator when the air source heat pump water heater is used for a long time, which further increases an icing thickness when the frosting is not treated in time, so that the whole water heater cannot operate normally, and secondly, a heat exchanger cannot be disassembled and cleaned quickly.
The above-mentioned objectives of the present application are achieved by the following technical solutions.
An air source heat pump water heater with an economizer arranged in a water-side heat exchanger includes a mounting base, wherein the mounting base provides a supporting surface to facilitate mounting of an air source heat pump water heater body, a top of the mounting base is fixedly connected with the air source heat pump water heater body, and an interior of the air source heat pump water heater body is provided with an evaporator assembly, so that a refrigerant is cooled by the evaporator assembly, which is convenient for subsequent recycling of the refrigerant; the evaporator assembly includes an evaporator body fixedly connected with the air source heat pump water heater body, and an interior of the evaporator body is fixedly connected with an evaporating pipe assembly; the evaporating pipe assembly is U-shaped, and the U-shaped arrangement increases a heat exchange contact area between the refrigerant and ice, achieving a better deicing effect; one side of the evaporating pipe assembly is fixedly connected with a connecting pad through a conveying pipe, and the connecting pad is communicated with an inner sleeve; the connecting pad and the conveying pipe are used for centralized collection and treatment of the used refrigerant, so that the circulation of the refrigerant is realized to avoid wasting; a top of the evaporating pipe assembly is fixedly connected with an input pipe, one side of the input pipe is fixedly connected with a solenoid valve, and the solenoid valve is used for controlling discharge of the refrigerant and further defrosting the evaporating pipe assembly; one side of the evaporator body is provided with a plurality of air inlets, and a bottom of the evaporator body is fixedly connected with a drain pipe, so that the melted water is centrally discharged and collected through the arranged drain pipe; and the evaporating pipe assembly includes an outer sleeve fixedly connected with the evaporator body, an interior of the outer sleeve is fixedly connected with an inner sleeve, and a gap is provided between the outer sleeve and the inner sleeve; an inner wall of the outer sleeve is provided with a plurality of conveying holes, and the introduced refrigerant is transported by the plurality of conveying holes to further melt the frost on a surface of the inner sleeve; and an interior of the outer sleeve is provided with a plurality of air inlet notches, so that the air inlet notches are used for draining outside air to absorb heat in the outside air on one hand, and the air inlet notches are used for discharging the melted water on the other hand.
As a further solution of the present application: a bottom of the air source heat pump water heater body is fixedly connected with a fixed seat, and a top of the fixed seat is slidably connected with a heat exchange assembly through a sliding groove, so that the heat exchange assembly can be slid and disassembled through the fixed seat and the sliding groove, which is convenient for subsequent maintenance and cleaning of the heat exchange assembly after long-term use, and the operation is simple and quick.
As a further solution of the present application: the heat exchange assembly includes a heat exchanger body slidably connected with the sliding groove, an interior of the heat exchanger body 1s fixedly connected with a heat exchange pipe, and the heat exchange pipe is also U-shaped; such arrangement can increase a contact area between cold water 5 and high-temperature and high-pressure refrigerant, thus improving the heat exchange efficiency; both ends of the heat exchange pipe are fixedly connected with a connecting assembly, a part connected with the heat exchange assembly is disassembled by using the connecting assembly, and the connecting assembly is simple in structure and convenient in operation; a top of the heat exchanger body is fixedly connected with a connecting sleeve, a bottom of the heat exchanger body is fixedly connected with a sliding block, and one side of the heat exchanger body is fixedly connected with a maintenance plate through a stop bolt; and the maintenance plate is used for carrying out a maintenance operation on the heat exchange pipe inside the heat exchanger body, so as to avoid the aging of the heat exchange pipe due to the passage of time and further prevent the aging of the heat exchange pipe from affecting overall work.
As a further solution of the present application: the connecting assembly includes a first flange fixedly connected with the heat exchange pipe, and one side of the first flange is fixedly connected with a second flange through a fixing bolt.
As a further solution of the present application: the interior of the air source heat pump water heater body is fixedly connected with a liquid storage tank, and one side of the liquid storage tank is fixedly connected with an expansion valve, so that the refrigerant after heat exchange is stored through the liquid storage tank, and the liquid refrigerant is processed and transported to the evaporator assembly through the expansion valve for next cycle operation.
As a further solution of the present application: the interior of the air source heat pump water heater body is rotatably connected with a rotating shaft, the rotating shaft is drivingly connected with an axial fan through a bevel gear set, and the plurality of bevel gear sets are utilized to drive the plurality of axial fans to rotate, so that the outside air is sucked to perform heat exchange treatment on the refrigerant to achieve the object of energy saving, and the interior of the air source heat pump water heater body is fixedly connected with a partition plate.
As a further solution of the present application: the partition plate is fixedly connected with a motor and an output end of the motor is drivingly connected with the rotating shaft through the bevel gear set, a top of the partition plate is fixedly connected with a compressor, a bottom of the compressor is fixedly connected with a compressor connecting pipe, and the inner sleeve is communicated with the compressor connecting pipe, so that the frost on the surface of the inner sleeve can be melted conveniently by using the high-temperature and high-pressure refrigerant; and the compressor connecting pipe is communicated with the heat exchanger body, and the high-temperature and high-pressure refrigerant is conveyed to the interior of the heat exchanger body to exchange heat with the water in the interior of the heat exchange pipe through the compressor connecting pipe.
As a further solution of the present application: the interior of the air source heat pump water heater body is fixedly connected with a water storage tank, upper and lower ends of the heat exchange pipe are mutually communicated with the water storage tank, one side of the water storage tank is fixedly connected with a water inlet and a water outlet from top to bottom in sequence, and both the water inlet and the water outlet penetrate through an inner wall of the air source heat pump water heater body.
As a further solution of the present application: a top of the air source heat pump water heater body is fixedly connected with a radiating port, one side of the air source heat pump water heater body is fixedly connected with an air suction port, and one side of the air source heat pump water heater body is fixedly connected with an access door through a stop bolt, so that parts inside the air source heat pump water heater body can be replaced and overhauled by the provided access door.
The present application has the beneficial effects that: 1. Through the arranged evaporator assembly, the U-shaped evaporating pipe assembly is used to improve a gas-liquid conversion speed of the refrigerant, and meanwhile, the arranged conveying holes are used to convey the high-temperature and high-pressure refrigerant to the surface of the inner sleeve for cold and heat exchange on the frosted part on the surface of the inner sleeve, so as to melt the frost condensed on the surface of the inner sleeve, and avoid the abnormal operation of the whole water heater due to over-thick frosting thickness. Secondly, the melted water is discharged by the arranged air inlet notches to avoid frosting and freezing accumulated in the outer sleeve to affect the subsequent work. Finally, the melted water can be separated through the outer sleeve and the inner sleeve, which is convenient for recycling the refrigerant. 2. Through the arranged heat exchange assembly, the heat exchange assembly can be quickly disassembled and mounted by the cooperation of the fixed seat, the sliding groove and the heat exchange assembly, so that the heat exchange pipe in the heat exchange assembly can be cleaned conveniently, thus avoiding the damage of the heat exchange pipe caused by the accumulation of internal scale for a long time to further lead to the failure of a whole heat pump hot water unit.
BRIEF DESCRIPTION OF THE DRAWINGS
The present application will be further described in detail below with reference to the drawings.
FIG. 1 is a schematic diagram of a three-dimensional structure of the present application;
FIG. 2 is a schematic diagram of a sectional structure of the present application;
FIG. 3 is a schematic diagram of a sectional structure of an evaporator assembly of the present application;
FIG. 4 is a schematic diagram of a sectional structure of an evaporating pipe assembly of the present application;
FIG. 5 is an enlarged schematic structural diagram of a portion A in FIG. 3 of the present application;
FIG. 6 is a structural schematic diagram of a heat exchange assembly of the present application; and
FIG. 7 is a schematic structural diagram of a connecting assembly of the present application.
Reference numerals: 1 - mounting base; 2 - air source heat pump water heater body; 3 - evaporator assembly; 31 - evaporator body; 32 - evaporating pipe assembly; 321 - outer sleeve; 322 - inner sleeve; 323 - conveying hole; 324 - air inlet notch; 33 - connecting pad; 34 - conveying pipe; 35 - input pipe; 36 - air inlet; 37 - drain pipe; 4 - fixed seat; 5 - sliding groove; 6 - heat exchange assembly; 61 - heat exchanger body, 62 - heat exchange pipe; 63 - connecting assembly; 631 - first flange; 632 - fixing bolt; 633 - second flange; 64 - connecting sleeve; 65 - sliding block; 66 - maintenance plate; 7 - liquid storage tank; 8 - expansion valve; 9 - rotating shaft; 10 - bevel gear set; 11 - axial fan; 12 - partition plate; 13 - motor; 14 - compressor; 15 - compressor connecting pipe;
16 - solenoid valve; 17 - water storage tank; 18 - water inlet; 19 - water outlet; 20 - radiating port; 21 - air suction port; and 22 - access door.
DETAILED DESCRIPTION OF THE EMBODIMENTS
The following clearly and completely describes the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Apparently, the described embodiments are merely some but not all of the embodiments of the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skills in the art without going through any creative effort shall fall within the scope of protection of the present application.
First embodiment
Referring to FIG. 1 to FIG. 5, the present application relates to an air source heat pump water heater with an economizer arranged in a water-side heat exchanger, including a mounting base 1. The mounting base 1 provides a supporting surface to facilitate mounting of an air source heat pump water heater body 2, a bottom of the air source heat pump water heater body 2 is fixedly connected with a fixed seat 4, and a top of the fixed seat 4 1s slidably connected with a heat exchange assembly 6 through a sliding groove 5.
The heat exchange assembly 6 is slid and disassembled through the fixed seat 4 and the sliding groove 5, which is convenient for subsequent maintenance and cleaning of the heat exchange assembly 6 after long-term use, and the operation is simple and quick. A top of the mounting base 1 is fixedly connected with the air source heat pump water heater body 2, and a top of the air source heat pump water heater body 2 is fixedly connected with a radiating port 20. One side of the air source heat pump water heater body 2 is fixedly connected with an air suction port 21, and one side of the air source heat pump water heater body 2 is fixedly connected with an access door 22 through a stop bolt,
so that parts inside the air source heat pump water heater body 2 are replaced and overhauled by the provided access door 22. The interior of the air source heat pump water heater body 2 is fixedly connected with a water storage tank 17, and upper and lower ends of the heat exchange pipe 62 are mutually communicated with the water storage tank 17. One side of the water storage tank 17 is fixedly connected with a water inlet 18 and a water outlet 19 from top to bottom in sequence, and both the water inlet 18 and the water outlet 19 penetrate through an inner wall of the air source heat pump water heater body 2. The interior of the air source heat pump water heater body 2 is rotatably connected with a rotating shaft 9, the rotating shaft 9 is drivingly connected with an axial fan 11 through a bevel gear set 10, and the plurality of bevel gear sets 10 are utilized to drive the plurality of axial fans 11 to rotate, so that the outside air is sucked to perform heat exchange treatment on the refrigerant to achieve the object of energy saving.
The interior of the air source heat pump water heater body 2 is fixedly connected with a partition plate 12, the partition plate 12 is fixedly connected with a motor 13 and an output end of the motor 13 is drivingly connected with the rotating shaft 9 through the bevel gear set 10. A top of the partition plate 12 is fixedly connected with a compressor
14, a bottom of the compressor 14 is fixedly connected with a compressor connecting pipe 15, and an inner sleeve 322 is communicated with the compressor connecting pipe 15, so that the frost on the surface of the inner sleeve 322 can be melted conveniently by using the high-temperature and high-pressure refrigerant.
Moreover, the compressor connecting pipe 15 is communicated with the heat exchanger body 61, and the high-temperature and high-pressure refrigerant is conveyed to the interior of the heat exchanger body 61 to exchange heat with the water in the interior of the heat exchange pipe 62 through the compressor connecting pipe.
The interior of the air source heat pump water heater body 2 is fixedly connected with a liquid storage tank 7, and one side of the liquid storage tank 7 is fixedly connected with an expansion valve 8, so that the refrigerant after heat exchange is stored through the liquid storage tank 7, and the liquid refrigerant is processed and transported to the evaporator assembly 3 through the expansion valve 8 for next cycle operation.
The interior of the air source heat pump water heater body 2 is provided with an evaporator assembly 3, so that a refrigerant is cooled by the evaporator assembly 3, which is convenient for subsequent recycling of the refrigerant.
The evaporator assembly 3 includes an evaporator body 31 fixedly connected with the air source heat pump water heater body 2, and an interior of the evaporator body
31 is fixedly connected with an evaporating pipe assembly 32. The evaporating pipe assembly 32 is U-shaped, and the U-shaped arrangement increases a heat exchange contact area between the refrigerant and ice, achieving a better deicing effect.
One side of the evaporating pipe assembly 32 is fixedly connected with a connecting pad 33 through a conveying pipe 34, and the connecting pad 33 is communicated with the inner sleeve
322. The connecting pad and the conveying pipe 34 are used for centralized collection and treatment of the used refrigerant, so that the circulation of the refrigerant is realized to avoid wasting.
A top of the evaporating pipe assembly 32 is fixedly connected with an input pipe 35, one side of the input pipe 35 is fixedly connected with a solenoid valve 16, and the solenoid valve 16 is used for controlling discharge of the refrigerant and further defrosting the evaporating pipe assembly 32. One side of the evaporator body 31 is provided with a plurality of air inlets 36, and a bottom of the evaporator body 31 is fixedly connected with a drain pipe 37, so that the melted water is centrally discharged and collected through the arranged drain pipe 37.
The evaporating pipe assembly 32 includes an outer sleeve 321 fixedly connected with the evaporator body 31, an interior of the outer sleeve 321 is fixedly connected with the inner sleeve 322, and a gap is provided between the outer sleeve 321 and the inner sleeve 322. An inner wall of the outer sleeve 321 is provided with a plurality of conveying holes 323, and the introduced refrigerant is transported by the plurality of conveying holes 323 to further melt the frost on a surface of the inner sleeve 322. An interior of the outer sleeve 321 is provided with a plurality of air inlet notches 324, so that the air inlet notches 324 are used for draining outside air to absorb heat in the outside air on one hand, and the air inlet notches 324 are used for discharging the melted water on the other hand.
Through the arranged evaporator assembly 3, the U-shaped evaporating pipe assembly 32 is used to improve a gas-liquid conversion speed of the refrigerant, and meanwhile, the arranged conveying holes 323 are used to convey the high-temperature and high-pressure refrigerant to the surface of the inner sleeve 322 for cold and heat exchange on the frosted part on the surface of the inner sleeve 322, so as to melt the frost condensed on the surface of the inner sleeve 322, and avoid the abnormal operation of the whole water heater due to over-thick frosting thickness. Secondly, the melted water is discharged by the arranged air inlet notches 324 to avoid frosting and freezing accumulated in the outer sleeve 321 to affect the subsequent work. Finally, the melted water may be separated through the outer sleeve 321 and the inner sleeve 322, which is convenient for recycling the refrigerant.
Second embodiment
Referring to FIG. 6 to FIG. 7, this embodiment includes all the structures in the first embodiment. The present application relates to an air source heat pump water heater with an economizer arranged in a water-side heat exchanger. The heat exchange assembly 6 includes the heat exchanger body 61 slidably connected with the sliding groove 5, the interior of the heat exchanger body 61 is fixedly connected with the heat exchange pipe 62, and the heat exchange pipe 62 is also U-shaped. Such arrangement can increase the contact area between the cold water and the high-temperature and high-pressure refrigerant, thus improving the heat exchange efficiency. Both ends of the heat exchange pipe 62 are fixedly connected with the connecting assembly 63, the connecting assembly 63 includes the first flange 631 fixedly connected with the heat exchange pipe 62, and one side of the first flange 631 1s fixedly connected with the second flange 633 through the fixing bolt 632. The part connected with the heat exchange assembly 6 is disassembled by using the connecting assembly 63, and the connecting assembly 63 1s simple in structure and convenient in operation. The top of the heat exchanger body 61 is fixedly connected with the connecting sleeve 64, the bottom of the heat exchanger body 61 is fixedly connected with the sliding block 65, and one side of the heat exchanger body 61 1s fixedly connected with the maintenance plate 66 through the stop bolt. The maintenance plate 66 is used for carrying out a maintenance operation on the heat exchange pipe 62 inside the heat exchanger body 61, so as to avoid the aging of the heat exchange pipe 62 due to the passage of time and further prevent the aging of the heat exchange pipe 62 from affecting overall work.
The working principle of the present application is as follows: firstly, water to be heated is discharged into the water storage tank 17 by using the water inlet 18, then the compressor 14 and the partition plate 12 are started, the compressor 14 compresses the refrigerant to form a high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant is discharged into the heat exchanger body 61 by using the compressor connecting pipe 15 to perform heat exchange treatment on the cold water in the heat exchange pipe 62, so that the cold water is heated and recycled to the water storage tank 17 for storage. The cooled refrigerant after heat exchange continues to become liquid under the pressure, and is further stored in the liquid storage tank 7. The liquid refrigerant enters the evaporator assembly 3 under the action of the expansion valve 8. Due to the sudden drop of the pressure in the evaporator assembly 3, the liquid refrigerant quickly evaporates into gas again. Under the action of the motor 13, the bevel gear set 10 is used to drive the plurality of rotating shafts 9 to work, so that the outside air is conveyed to the evaporator assembly 3, and the outside air is absorbed by the refrigerant in the evaporator assembly 3 for next cycle operation under the action of the compressor 14.
After working for a long time, the surface of the inner sleeve 322 may form a certain amount of frost under the action of the refrigerant. After multiple cycles, the frost formed by the refrigerant may thicken and form ice. In this case, the solenoid valve 16 is opened and the high-temperature and high-pressure refrigerant generated by the compressor 14is convey intoed the conveying hole 323 through the input pipe 35 to melt the frost formed on the surface of the inner sleeve 322. The melted water may drop to the bottom of the evaporator body 31 through the air inlet notch 324 and be discharged through the drain pipe 37. The refrigerant after heat exchange flows into the inner sleeve 322 through the connecting pad 33 and the conveying pipe 34 for cycle recycling and utilization.
After a long period of work, it is necessary to overhaul and clean the heat exchange assembly 6 inside the air source heat pump water heater body 2. In this case, the first flange 631 and the fixing bolt 632 are separated by the fixing bolt 632, so that the whole heat exchange assembly 6 can be taken out by the action of the sliding block 65 and the sliding groove 5, and then the stop bolt on the maintenance plate 66 may be removed to clean the heat exchange pipe 62 inside the heat exchanger body 61. After cleaning, the heat exchange assembly 6 can be reinstalled by using the first flange 631 and the fixing bolt 632.
One embodiment of the present application has been described in detail above, but the content disclosed is merely a preferred embodiment of the present application, and cannot be deemed as a limitation to the implementation scope of the present application. Any equivalent modification or improvement made according to the application scope of the present application shall fall within the patent coverage of the present application.

Claims (9)

  1. CLAIMS LU505367
    I. An air source heat pump water heater with an economizer arranged in a water-side heat exchanger, characterized in that, comprising a mounting base, a top of the mounting base being fixedly connected with an air source heat pump water heater body, wherein an interior of the air source heat pump water heater body is provided with an evaporator assembly, the evaporator assembly comprises an evaporator body fixedly connected with the air source heat pump water heater body, an interior of the evaporator body 1s fixedly connected with an evaporating pipe assembly, one side of the evaporating pipe assembly 1s fixedly connected with a connecting pad, a top of the evaporating pipe assembly is fixedly connected with an input pipe, one side of the input pipe is fixedly connected with a solenoid valve, one side of the evaporator body is provided with a plurality of air inlets, and a bottom of the evaporator body is fixedly connected with a drain pipe; and the evaporating pipe assembly comprises an outer sleeve fixedly connected with the evaporator body, an interior of the outer sleeve is fixedly connected with an inner sleeve, an inner wall of the outer sleeve is provided with a plurality of conveying holes, and an interior of the outer sleeve is provided with a plurality of air inlet notches.
  2. 2. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 1, characterized in that, a bottom of the air source heat pump water heater body is fixedly connected with a fixed seat, and a top of the fixed seat is slidably connected with a heat exchange assembly through a sliding groove.
  3. 3. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 2, characterized in that, the heat exchange assembly comprises a heat exchanger body slidably connected with the sliding groove, an interior of the heat exchanger body is fixedly connected with a heat exchange pipe, both ends of the heat exchange pipe are fixedly connected with a connecting assembly, a top of the heat exchanger body is fixedly connected with a connecting sleeve, a bottom of the heat exchanger body is fixedly connected with a sliding block, and one side of the heat exchanger body is fixedly connected with a maintenance plate through a stop bolt.
  4. 4. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 3, characterized in that, the connecting assembly comprises a first flange fixedly connected with the heat exchange pipe, and one side of the first flange is fixedly connected with a second flange through a fixing bolt.
  5. 5. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 2, characterized in that, the interior of the air source heat pump water heater body is fixedly connected with a liquid storage tank, and one side of the liquid storage tank is fixedly connected with an expansion valve.
  6. 6. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 5, characterized in that, the interior of the air source heat pump water heater body is rotatably connected with a rotating shaft, the rotating shaft is drivingly connected with an axial fan through a bevel gear set, and the interior of the air source heat pump water heater body is fixedly connected with a partition plate.
  7. 7. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 6, characterized in that, the partition plate is fixedly connected with a motor and an output end of the motor is drivingly connected with the rotating shaft through the bevel gear set, a top of the partition plate is fixedly connected with a compressor, and a bottom of the compressor is fixedly connected with a compressor connecting pipe.
  8. 8. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 6, characterized in that, the interior of the air source heat pump water heater body is fixedly connected with a water storage tank, and one side of the water storage tank is fixedly connected with a water inlet and a water outlet from top to bottom in sequence.
  9. 9. The air source heat pump water heater with the economizer arranged in the water-side heat exchanger according to claim 8, characterized in that, a top of the air source heat pump water heater body is fixedly connected with a radiating port, one side of the air source heat pump water heater body is fixedly connected with an air suction port, and one side of the air source heat pump water heater body is fixedly connected with an access door through a stop bolt.
LU505367A 2022-08-15 2023-03-23 Air source heat pump water heater with economizer arranged in water-side heat exchanger LU505367B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210974766.4A CN115371258A (en) 2022-08-15 2022-08-15 Air source heat pump water heater with economizer arranged in water side heat exchanger

Publications (1)

Publication Number Publication Date
LU505367B1 true LU505367B1 (en) 2024-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
LU505367A LU505367B1 (en) 2022-08-15 2023-03-23 Air source heat pump water heater with economizer arranged in water-side heat exchanger

Country Status (3)

Country Link
CN (1) CN115371258A (en)
LU (1) LU505367B1 (en)
WO (1) WO2023179729A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115371258A (en) * 2022-08-15 2022-11-22 马鞍山市博浪热能科技有限公司 Air source heat pump water heater with economizer arranged in water side heat exchanger
CN115371293B (en) * 2022-08-16 2023-10-31 马鞍山市博浪热能科技有限公司 Efficient tank-type heat exchanger with oil return function for heat pump unit
CN117889488B (en) * 2024-03-14 2024-05-14 山西省安装集团股份有限公司 Air conditioner heat pump heating equipment and heating method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100307172A1 (en) * 2008-01-30 2010-12-09 Carrier Corporation Refrigerant system with reheat refrigerant circuit
DE102013219361A1 (en) * 2013-09-26 2015-03-26 BSH Bosch und Siemens Hausgeräte GmbH Refrigerating appliance and chiller for it
CN203797943U (en) * 2013-12-23 2014-08-27 博世热力技术（上海）有限公司 Heat-pump water heater
CN205980489U (en) * 2016-08-15 2017-02-22 韦超旺 Energy -saving hot vapour defrosting system of air -source heat bump water heater
CN208720562U (en) * 2018-06-21 2019-04-09 深圳市派沃新能源科技股份有限公司 A kind of low circumstance temperature air source heat pump system
CN112902498B (en) * 2021-01-14 2022-12-20 山东三土能源股份有限公司 Air source heat pump refrigerant circulation system
CN115371258A (en) * 2022-08-15 2022-11-22 马鞍山市博浪热能科技有限公司 Air source heat pump water heater with economizer arranged in water side heat exchanger

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WO2023179729A1 (en) 2023-09-28
CN115371258A (en) 2022-11-22

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