CN205718001U - A kind of hierarchical phase-change heat storage water tank - Google Patents

Abstract

This utility model provides a kind of hierarchical phase-change heat storage water tank, the upper cover being connected with box sealing including casing, the phase change material device being located at casing internal upper part, for adding hot water and horizontally disposed first coil pack, for tentatively adding hot water and making cold-producing medium be become liquid and horizontally disposed second coil pack by gaseous state, be located at the water inlet tap of lower box, the outlet pipe being located in casing and be located on casing the faucet that the external port with outlet pipe is connected；Phase change material device, the first coil pack and the second coil pack are arranged in casing from top to bottom, and during use, the water in casing is divided into cryosphere district, heat zone district and heat accumulation district from bottom to up naturally.This utility model overall volume is little, and thermal conversion efficiency is high, and leaving water temperature is high and leaving water temperature is the most stable, and Consumer's Experience is good.

Description

A kind of hierarchical phase-change heat storage water tank

Technical field

This utility model relates to field of water heaters, is specifically related to the hierarchical phase-change heat storage water tank of a kind of water heater.

Background technology

Solar energy, air can be as important renewable and clean energy resources, and its exploitation application is increasingly subject to pay attention to.Solar heat Hydrophone especially solar vacuum-tube water heater has developed to obtain comparative maturity industrialization on a large scale the most, but the sun The deficiency of energy water heater maximum is could preferably must to use on the daytime having sunlight；At present, by solar energy and air energy Application is also shown in by the water heater combined, and its principle is by the air in solar energy and/or atmospheric environment by heat-exchange device Heat energy transfer, in cold-producing medium, is made in the cold-producing medium of High Temperature High Pressure pipeline in water-heater water tank by compressor (heat pump) Flowing and water carry out heat exchange, it is achieved add the purpose of hot water.The weak point that this type of water heater exists at present is: one, hot water Device leaving water temperature typically temperature area in 65 DEG C, in order to meet daily water supply needs, water tank capacity is the biggest, such as domestic air Energy water heater volume is general all at more than 150L, takes up room big；The reason that leaving water temperature is relatively low, the most critical by cold-producing medium Temperature is limited, and refrigerant condensing temperature can not be too high, can not exceed again compressor limiting pressure, the cold-producing medium of High Temperature High Pressure simultaneously Must condense during backflow to less than 70 DEG C, thus its leaving water temperature can not be too high；In order to solve condensation temperature, it may be necessary to multiple Water tank.Its two, the commonly used spiral coil of water heater is used for heat exchange, common such as immersion coil pipe, its spiral shell that will wind Capstan pipe is arranged in water tank, its in use, in water tank, water is heated uneven, not only there is thermograde in vertical direction, There is also thermal stratification phenomenon in the horizontal direction, away from the region at spiral coil center and the most on the low side along barrel region water temperature； Also have and the coil pipe of heat exchange is wound on the outer wall of inner water tank, it is to avoid coil pipe directly contacts with water, and it equally exists from barrel The phenomenon that more far water temperature is the lowest.

At present, in the water heater that solar energy, air energy or the solar energy of aforementioned type can combine with air, phase is added Become medium for the most common research of energy storage, as application publication number be CN 105588327A, entitled " Novel heat storage type air energy Teat pump boiler ", and for example application publication number be CN 104180521A, entitled " a kind of nano phase change energy-storage type heat pump Device ", for another example application publication number be the Chinese patent literary composition such as CN 103615817A, entitled " a kind of plug-in phase-change heat storage water tank " Offering, i.e. disclose the various water heater utilizing phase-change material heat accumulation, its common problem is, places phase owing to water tank is internal Become design and the deficiency of the internal integral layout of water tank of the component such as coil pipe of the device of material, heat exchange so that it exists water Case leaving water temperature is the highest, thermal conversion efficiency is the highest, inequality of being heated because of the water in water tank causes that water outlet is uneven in temperature makes user's body Test the problems such as the best.

Utility model content

The purpose of this utility model is: provide that a kind of overall volume is little, thermal conversion efficiency is high when using, leaving water temperature relatively High and that leaving water temperature is relatively stable, Consumer's Experience is respond well hierarchical phase-change heat storage water tank.

The technical solution of the utility model is: hierarchical phase-change heat storage water tank of the present utility model, and it is structurally characterized in that: bag Include casing, upper cover, phase change material device, the first coil pack, the second coil pack, connecting tube, water inlet tap and outlet pipe；

The first above-mentioned coil pack includes that substrate, coil pipe, cold-producing medium enter mouth and cold-producing medium goes out mouth；Substrate is copper circle Shape plate body part, substrate offers some through holes；Coil pipe is formed by 1 copper pipe bending；Coil pipe is overall in continuous print zigzag；Dish Sealing of tube is fixed on the upper surface of substrate；Cold-producing medium enters mouth and is fixedly installed on a port of coil pipe；It is solid that cold-producing medium goes out mouth Surely it is arranged on another port of coil pipe；The structure of the second coil pack is identical with the first coil pack；

Above-mentioned upper cover is fixing with box sealing to be connected；Phase change material device is fixedly installed on the top in casing；First The position, partial below, middle part that the substrate of coil pack and coil pipe level are fixedly installed in casing, and it is positioned at phase change material device Lower section；The cold-producing medium of the first coil pack enters mouth and cold-producing medium goes out mouth and is fixedly installed on casing and the refrigeration of the first coil pack Agent is entered mouth and is stretched out in outside casing；The external port of outlet pipe is provided with faucet；Faucet is fixedly installed on casing and is positioned at The cold-producing medium of one coil pack enters mouth and cold-producing medium goes out the top of mouth；The inner port of outlet pipe is located in phase change material device；The The bottom that the substrate of two coil packs and coil pipe level are fixedly installed in casing；The cold-producing medium of the second coil pack enters mouth and system Cryogen goes out mouth and is fixedly installed on casing and the cold-producing medium of the second coil pack goes out mouth and stretches out in outside casing；

The cold-producing medium of the first coil pack is gone out the cold-producing medium of mouth and the second coil pack and enters mouth and be connected by connecting tube；Water inlet tap It is fixedly installed on casing and is positioned at the cold-producing medium of the second coil pack and enter mouth and cold-producing medium goes out the lower section of mouth；

During use, cold water flows into from the water inlet tap being located at lower box, and hot water is from being located at going out of position on the lower side in the middle part of casing Water nozzle flows out；The refrigerant gas of High Temperature High Pressure enters mouth from the cold-producing medium of the first coil pack and flows into；Refrigerant liquid after cooling Body goes out mouth from the cold-producing medium of the first coil pack and flows out；Water body in casing is divided into cryosphere district, high temperature from bottom to up naturally Floor district and heat accumulation district；Wherein, space around the second coil pack constitutes cryosphere district, above the first coil pack, phase transformation storage Space below thermal constitutes heat zone district；Clearance spaces in phase change material device constitutes heat accumulation district.

Further scheme is: above-mentioned casing is the hollow circular cylinder part of upper end open；Casing include shell, inner bag with And the heat-insulation layer being arranged between shell and inner bag.

Further scheme is: the inner bag of above-mentioned casing is enamel inner container；The material of heat-insulation layer is that polyurethane foaming is protected Adiabator.

Further scheme is: above-mentioned phase change material device includes footstock, base, aluminum pipe and phase-change heat-storage material；Top Seat is made up of plugboard and mounting ring；Plugboard is circular plate body part, and plugboard is provided with several aluminum pipe installing holes；Install The periphery of ring is provided with the screw of some installations, and mounting ring is located at the top of plugboard and integrally connects with the neighboring of plugboard Connect, so that form a reserved phase change expansion space between the upper surface of mounting ring and the upper surface of plugboard；Base by Base plate and skirtboard one composition, base plate is circular plate body part；The circle centre position of base plate is provided with the centre bore of circle；Skirtboard is arranged on It is connected on the neighboring, upper end of base plate and with base plate one；The quantity that aluminum pipe is arranged and the aluminum pipe installing hole on the plugboard of footstock Quantity identical；Each aluminum pipe is vertically arranged between the plugboard of footstock and the base plate of base；The lower end of each aluminum pipe and the end of base The upper surface ultrasonic bonding mode of plate is fixing to be connected；The upper end of each aluminum pipe aluminum pipe installing hole corresponding with on the plugboard of footstock Grafting；Phase-change heat-storage material is filled in each aluminum pipe.

Further scheme is: the phase-change heat-storage material of above-mentioned phase change material device be specific heat be 50 times and solid-liquid of water Phase transformation critical temperature is paraffin and the graphite mixture of 80 DEG C.

Further scheme also has: above-mentioned outlet pipe has connected horizontal pipeline section and vertical pipeline section, and outlet pipe is overall L-shaped；Connecting faucet in the external port of the horizontal pipeline section of outlet pipe, the horizontal tube section of outlet pipe is positioned at the first coil pack The top of coil pipe；The vertical pipeline section of outlet pipe is through the centre bore tailing edge phase-change thermal storage dress of the base plate of the base of phase change material device The axis put protrudes upward, and the upper port of the vertical pipeline section of outlet pipe is close with the upper plate of phase change material device.

This utility model has positive effect: (1) hierarchical of the present utility model phase-change heat storage water tank, it is by being located at Phase change material device in casing, for adding the first coil pack of hot water, for tentatively adding hot water and making cold-producing medium by gaseous state Become the second coil pack of liquid, be located at the water inlet tap of lower box and the layout structure such as the structure of outlet pipe and position arrangement Design so that it is the water in casing is divided into cryosphere district, heat zone district and heat accumulation district from bottom to up naturally in use, in casing Water free convection heat exchange, water body is heated evenly, the water temperature subregion that effectively overcomes in prior art in water tank, uneven in temperature Phenomenon.(2) hierarchical phase-change heat storage water tank of the present utility model, it makes phase transformation by the structure design of phase change material device Heat accumulating and hot water can carry out sufficient heat exchange, keep hot water temperature such that it is able to farthest reduce water accordingly The volume of case；Lead to simultaneously and the upper port of outlet pipe is arranged in phase change material device so that the hot water of faucet output is basic Being maintained at about 80 DEG C temperature, Consumer's Experience is greatly improved.(3) hierarchical phase-change heat storage water tank of the present utility model, it passes through The substrate of coil pack is used porous copper coin, the coil design being fixedly installed on substrate are integral in continuous print zigzag etc. Structure designs, it is possible to be effectively improved the heat exchange area with water, improves thermal conversion efficiency；Simultaneously by by the first coil pack and Second coil pack layering is horizontally disposed with so that it is can realize the abundant heating to water by the free convection of water so that water body It is heated evenly.(4) hierarchical phase-change heat storage water tank of the present utility model, its overall volume is little, and thermal conversion efficiency is high, goes out water temperature Degree is high and leaving water temperature is the most stable, and Consumer's Experience is good.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is that the A-A of Fig. 1 is to sectional view；

Fig. 3 is the structural representation of the heat-storing device in Fig. 2；

Fig. 4 is the top view of the base in Fig. 3；

Fig. 5 is the structural representation of the first coil pack in Fig. 2；

Fig. 6 is the structural representation after removing substrate in Fig. 5；

Fig. 7 is the system structure schematic diagram of a kind of application examples of this utility model.

Reference in above-mentioned accompanying drawing is as follows:

Casing 1, shell 11, inner bag 12, heat-insulation layer 13；

Upper cover 2；

Phase change material device 3, footstock 31, plugboard 31-1, mounting ring 31-2, base 32, base plate 32-1, centre bore 32- 1-1, skirtboard 32-2, aluminum pipe 33, phase-change heat-storage material 34；

First coil pack 4, substrate 41, coil pipe 42, cold-producing medium enters mouth 43, and cold-producing medium goes out mouth 44；

Second coil pack 5；Second refrigerant enters mouth 53, and second refrigerant goes out mouth 54；

Connecting tube 6；

Water inlet tap 7；

Outlet pipe 8, faucet 81；

Cryosphere district 101, heat zone district 102, heat accumulation district 103.

Detailed description of the invention

With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.

(embodiment 1)

Seeing Fig. 1 to Fig. 6, the hierarchical phase-change heat storage water tank of the present embodiment, it is mainly by casing 1, upper cover 2, phase-change thermal storage Device the 3, first coil pack the 4, second coil pack 5, connecting tube 6, water inlet tap 7 and outlet pipe 8 form.

Casing 1 the present embodiment preferably employs the hollow circular cylinder part of upper end open；Obviously, casing 1 may be used without square Deng other shapes.Casing 1 is mainly made up of shell 11, inner bag 12 and the heat-insulation layer 13 that is arranged between shell 11 and inner bag 12； Inner bag 12 the present embodiment preferably employs enamel inner container；Material the present embodiment of heat-insulation layer 13 preferably employs polyurethane foaming protect Adiabator.The position on the lower side, middle part of casing 1 sidewall is provided with inside and outside through faucet installing hole, cold-producing medium enters mouth installing hole；Case The position on the lower side, middle part of the inner bag 12 of interior 1 is additionally provided with cold-producing medium and goes out mouth installing hole；Cold-producing medium enters mouth installing hole and cold-producing medium goes out mouth Installing hole is disposed on the same plane；Faucet installing hole is arranged on cold-producing medium and enters mouth installing hole and cold-producing medium goes out mouth installing hole Top；The bottom of casing 1 sidewall is provided with inside and outside through water inlet tap installing hole, second refrigerant goes out mouth installing hole；In case 1 interior The bottom of gallbladder 12 is additionally provided with second refrigerant and enters mouth installing hole；Second refrigerant goes out mouth installing hole and second refrigerant enters mouth and installs Hole is at grade；Water inlet tap installing hole is arranged on second refrigerant and goes out mouth installing hole and second refrigerant enters mouth installing hole Lower section.

Upper cover 2 is made up of shell and setting heat-insulation layer in the enclosure；The upper port of the shape of upper cover 2 and casing 1 is mutually Joining, upper cover 2 is tightly connected with casing 1.

Seeing Fig. 2 to Fig. 4, phase change material device 3 is main by footstock 31, base 32, aluminum pipe 33 and phase-change heat-storage material 34 Composition.Footstock 31 is made up of plugboard 31-1 and mounting ring 31-2, and plugboard 31-1 is circular plate body part, on plugboard 31-1 It is provided with several aluminum pipe installing holes；The periphery of mounting ring 31-2 is provided with the screw of some installations, and mounting ring 31-2 is located at grafting The top of plate 31-1 and being connected with the neighboring one of plugboard 31-1, so that the upper surface of mounting ring 31-2 and plugboard Forming a space between the upper surface of 31-1, this space is reserved phase change expansion space；Base 32 is by base plate 32-1 and skirt Plate 32-2 one composition, base plate 32-1 is circular plate body part；The circle centre position of base plate 32-1 is provided with the centre bore 32-1-1 of circle； Skirtboard 32-2 is arranged on the neighboring, upper end of base plate 32-1 and is connected with base plate 32-1 one；The quantity of aluminum pipe 33 setting and top The quantity of the aluminum pipe installing hole on the plugboard 31-1 of seat 31 is identical；Each aluminum pipe 33 is at the plugboard 31-1 of footstock 31 and base 32 Base plate 32-1 between be vertically arranged；The lower end of each aluminum pipe 33 is solid with the upper surface ultrasonic bonding mode of the base plate 32-1 of base 32 Fixed connection；The aluminum pipe installing hole grafting corresponding with on the plugboard 31-1 of footstock 31 of the upper end of each aluminum pipe 33；Each aluminum pipe 33 upper End opening；Phase-change heat-storage material 34 is filled in each aluminum pipe 33；In the present embodiment, phase-change heat-storage material 34 preferably employs solid liquid phase Becoming paraffin and graphite mixture that critical temperature is 80 DEG C, the specific heat of phase-change heat-storage material 34 is 50 times of water；Phase-change thermal storage fills Put 3 to be designed by structure, it is possible to when making to use, phase-change heat-storage material 34 carries out sufficient heat exchange with hot water, keeps hot water temperature Degree, it is achieved farthest reduce the volume of water tank.

Phase change material device 3 is arranged on the top in casing 1, and phase change material device 3 is by the inner bag of its upper plate 31 with casing 1 The upper port of 12 coordinates fixing connection；Phase change material device 3 by the skirtboard 32-2 of its base 32 add after sealing ring with casing 1 Inner bag close proximity；The upper plate 31 of phase change material device 3 connects with upper cover 2 after installing sealing gasket additional.

See Fig. 5 and Fig. 6, the first coil pack 4 main by substrate 41, coil pipe 42, cold-producing medium enters mouth 43 and cold-producing medium goes out Mouth 44 forms.Substrate 41 is copper circular plate body part, and substrate 41 offers several through holes, with increasing heat radiation area, profit Coil pipe 42 and the sufficient heat exchange of water in time using；Coil pipe 42 is formed by 1 copper pipe bending；Coil pipe 42 entirety is continuous print Z-shaped Shape；Coil pipe 42 is weldingly fixed on the upper surface of substrate 41；The structure design of substrate 41 and coil pipe 42 so that it is in use can Fully realize the heat exchange with water, improve thermal conversion efficiency, make water body be heated evenly simultaneously, there is not water temperature zoned phenomenon； Cold-producing medium enters mouth 43 and is fixedly installed on a port of coil pipe 42；Cold-producing medium goes out mouth 44 and is fixedly installed on another of coil pipe 42 On port.The position, partial below, middle part that first coil pack 4 is arranged in casing 1, the base of phase change material device 3 32 times Side；The substrate 41 of the first coil pack 4 is fixedly installed on the inner bag 12 of casing 1, and cold-producing medium enters mouth 43 and is fixedly installed on case In the cold-producing medium of body 1 enters mouth installing hole and overhang to casing 1；Cold-producing medium goes out mouth 44 and is fixedly installed in case in the inner bag 12 of 1 The cold-producing medium of bottom goes out in mouth installing hole but does not stretch out outside casing 1.

The structure of the second coil pack 5 is identical with the first coil pack 4；Under second coil pack 5 is arranged in casing 1 Portion, the substrate of the second coil pack 5 is fixedly installed on the inner bag 12 of casing 1, and second refrigerant enters mouth 53 and is fixedly installed on The second refrigerant of the inner bag 12 of casing 1 enters in mouth installing hole but does not stretch out outside casing 1；Second refrigerant goes out mouth 54 and is fixedly installed Overhang in case, the second refrigerant of 1 goes out mouth installing hole and to casing 1.

Connecting tube 6 is arranged between the shell 11 of casing 1 and heat-insulation layer 13；The upper end of connecting tube 6 and the first coil pack 4 Cold-producing medium go out mouth 44 and be connected；The lower end of connecting tube 6 is entered mouth 53 with the second refrigerant of the second coil pack 5 and is connected.

Water inlet tap 7 is fixedly installed in the water inlet tap installing hole of casing 1 lower sidewall；Water inlet tap 7 is positioned at the second coil pipe group The second refrigerant of part 5 enters mouth 53 and second refrigerant goes out the lower section of mouth 54.

Outlet pipe 8 has connected horizontal pipeline section and vertical pipeline section, and outlet pipe 8 is overall L-shaped, the horizontal tube of outlet pipe 8 Connect in the external port of section in having the faucet installing hole that faucet 81, faucet 81 are fixedly mounted on casing 1 sidewall middle and lower part； Faucet 81 is positioned at the cold-producing medium of the first coil pack 4 and enters mouth 43 and cold-producing medium goes out the top of mouth 44；Faucet 81 is used for using Time go out hot water；The horizontal tube section of outlet pipe 8 is positioned at the top of the coil pipe 42 of the first coil pack 4；The vertical pipeline section of outlet pipe 8 is worn Cross the axis of centre bore 32-1-1 tailing edge phase change material device 3 of the base plate 32-1 of the base 32 of phase change material device 3 upwards Stretch out, and the upper port of the vertical pipeline section of outlet pipe 8 is close with the upper plate 31 of phase change material device 3.

During use, tap water enters from the water inlet tap 7 of bottom, and hot water goes out from the faucet 81 of top；The inner bag 12 of casing 1 Interior space is divided into cryosphere district 101, heat zone district 102 and heat accumulation district 103 from bottom to up naturally；Wherein, the second coil pipe group Space around part 5 constitutes cryosphere district 101, and the space above the first coil pack 4, below phase change material device 3 constitutes height Wen Ceng district 102；Clearance spaces in phase change material device 3 constitutes heat accumulation district 103；The coolant media gas of High Temperature High Pressure during use The water in heat zone district 102 is heated by the coil pipe 42 flowing through the first coil pack 4, the hot water in heated heat zone district 102 Heat accumulation is entered by the centre bore 32-1-1 of the base plate 32-1 of the base 32 of phase change material device 3 under water pressure from below to up District 103；When the hot water temperature in heat accumulation district 103 is more than 80 DEG C, the phase-change thermal storage material in each aluminum pipe 33 of phase change material device 3 Material 34 beginning solid-liquid phase change, absorbs a large amount of latent heat, by heat storage in phase-change heat-storage material 34；Heat in heat accumulation district 103 When coolant-temperature gage is less than 80 DEG C, phase-change heat-storage material 34 reverse inversion release heat heats to hot water, so that outlet pipe 8 passes through The hot water that faucet 81 is gone out substantially remains in about 80 DEG C.

(application examples)

See Fig. 7, the hierarchical phase-change heat storage water tank of the present embodiment, its in use, access as shown in Figure 7 solar energy/ Air can be prepared in hot-water heating system: the cold-producing medium of the first coil pack 4 is entered mouth 43 and is connected with the compressor of system by pipeline； The second refrigerant of the second coil pack 5 is gone out mouth 54 and is connected with the throttling expansion capillary tube of system by pipeline；Water inlet tap 7 is external Cold water pipe enters tap water；The external hot-water line of faucet 81 goes out hot water.

During system work, cold-producing medium (coolant media) liquid is after air energy heat collector and solar energy heat collector heat Becoming gas after compressor, the refrigerant gas of High Temperature High Pressure enters mouth 43 from the cold-producing medium of the first coil pack 4 and enters coil pipe 42, carry out heat exchange by matrix 41 and the water of coil pipe 42 and porous and the water in heat zone district 102 is heated；Heated heat zone The hot water in district 102 enters heat accumulation district 103 and goes out hot water through outlet pipe 8；Refrigerant gas after heat exchange is under stress through cold-producing medium Go out the second refrigerant of mouth 44, connecting tube 6 and the second coil pack 5 to enter mouth 53 and enter coil pipe and the matrix of the second coil pack 5 Carrying out heat exchange with the water in cryosphere district 101, the water in cryosphere district 101 is just lower than the coolant-temperature gage in heat zone district, separately Cold water outside Yi Fangmian constantly enters cryosphere district 101 from water inlet tap 7, so that enter the coil pipe of the second coil pack 5 Interior refrigerant gas cools to less than 60 DEG C liquefaction, and the second coil pack 5 is while tentatively adding hot water so that refrigeration Agent gas is fully liquefied and becomes liquid refrigerant and gone out mouth 54 by the second refrigerant of the second coil pack 5 and be again introduced into by pipeline In the capillary tube of the throttling expansion of system, enter next one circulation；Thus realize constantly to enter from water tank bottom water inlet tap 7 Tap water heating, continuously outflow, from the faucet 81 of outlet pipe 8, the purpose that temperature substantially remains in the hot water of about 80 DEG C.

In sum, the hierarchical phase-change heat storage water tank of the present embodiment, it is by being located at the phase change material device in casing 1 3, for adding the first coil pack 4 of hot water, for tentatively adding hot water and making cold-producing medium be become the second coil pipe of liquid by gaseous state Assembly 5, it is located at the water inlet tap 7 of casing 1 bottom and is located at the layout structure designs such as outlet pipe 8 in the middle part of casing 1 so that it makes Water in used time casing 1 is divided into cryosphere district 101, heat zone district 102 and heat accumulation district 103 from bottom to up naturally, in casing 1 Water free convection heat exchange, water body is heated evenly, the water temperature subregion that effectively overcomes in prior art in water tank, uneven in temperature Phenomenon；It is designed by the structure of phase change material device 3 and the upper port of outlet pipe 8 is arranged in phase change material device 3, Enable to phase-change heat-storage material 34 and carry out sufficient heat exchange with hot water, keep hot water temperature, be on the one hand capable of maximum Degree ground reduces the volume of water tank；On the other hand faucet 81 output substantially remains in the hot water of about 80 DEG C, and Consumer's Experience is big For improving；Its by the substrate of coil pack is used the copper coin of porous, the coil design that is fixedly installed on substrate integral in The structure designs such as continuous print zigzag, it is possible to be effectively improved the heat exchange area with water, improve thermal conversion efficiency；Pass through will simultaneously First coil pack and the layering of the second coil pack are horizontally disposed with so that it is can realize adding water by the free convection of water Heat so that water body is heated evenly；Its overall volume is little, thermal conversion efficiency is high, and leaving water temperature is high and leaving water temperature is the most stable, Consumer's Experience is good.

Above example and application examples are the explanations to detailed description of the invention of the present utility model, rather than to this utility model Restriction, person skilled in the relevant technique is in the case of without departing from spirit and scope of the present utility model, it is also possible to do Going out various conversion and change and obtain the technical scheme of corresponding equivalent, the technical scheme of the most all equivalents all should be included into Scope of patent protection of the present utility model.

Claims (5)

1. a hierarchical phase-change heat storage water tank, it is characterised in that: include casing, upper cover, phase change material device, the first coil pipe group Part, the second coil pack, connecting tube, water inlet tap and outlet pipe；

The first described coil pack includes that substrate, coil pipe, cold-producing medium enter mouth and cold-producing medium goes out mouth；Substrate is copper circular slab Body part, substrate offers some through holes；Coil pipe is formed by 1 copper pipe bending；Coil pipe is overall in continuous print zigzag；Coil pipe welds Connect on the upper surface being fixed on substrate；Cold-producing medium enters mouth and is fixedly installed on a port of coil pipe；Cold-producing medium goes out that mouth is fixing to be set Put on another port of coil pipe；The structure of the second coil pack is identical with the first coil pack；

Described upper cover is fixing with box sealing to be connected；Phase change material device is fixedly installed on the top in casing；First coil pipe The position, partial below, middle part that the substrate of assembly and coil pipe level are fixedly installed in casing, and be positioned under phase change material device Side；The cold-producing medium of the first coil pack enters mouth and cold-producing medium goes out mouth and is fixedly installed on casing and the cold-producing medium of the first coil pack Enter mouth to stretch out in outside casing；The external port of outlet pipe is provided with faucet；Faucet is fixedly installed on casing and is positioned at first The cold-producing medium of coil pack enters mouth and cold-producing medium goes out the top of mouth；The inner port of outlet pipe is located in phase change material device；Second The bottom that the substrate of coil pack and coil pipe level are fixedly installed in casing；The cold-producing medium of the second coil pack enters mouth and refrigeration Agent goes out mouth and is fixedly installed on casing and the cold-producing medium of the second coil pack goes out mouth and stretches out in outside casing；

The cold-producing medium of the first coil pack is gone out the cold-producing medium of mouth and the second coil pack and enters mouth and be connected by connecting tube；Water inlet tap is fixed It is arranged on casing and is positioned at the cold-producing medium of the second coil pack and enter mouth and cold-producing medium goes out the lower section of mouth；

During use, cold water flows into from the water inlet tap being located at lower box, and hot water is from being located at the faucet of position on the lower side in the middle part of casing Flow out；The refrigerant gas of High Temperature High Pressure enters mouth from the cold-producing medium of the first coil pack and flows into；Refrigerant liquid after cooling from The cold-producing medium of the first coil pack goes out mouth and flows out；Water body in casing is divided into cryosphere district, heat zone district from bottom to up naturally With heat accumulation district；Wherein, space around the second coil pack constitutes cryosphere district, above the first coil pack, phase-change thermal storage dress The space putting lower section constitutes heat zone district；Clearance spaces in phase change material device constitutes heat accumulation district.

Hierarchical phase-change heat storage water tank the most according to claim 1, it is characterised in that: described casing is upper end open Hollow circular cylinder part；Casing includes shell, inner bag and the heat-insulation layer being arranged between shell and inner bag.

Hierarchical phase-change heat storage water tank the most according to claim 2, it is characterised in that: the inner bag of described casing is enamel Inner bag；The material of heat-insulation layer is polyurethane foaming insulation material.

Hierarchical phase-change heat storage water tank the most according to claim 1, it is characterised in that: described phase change material device includes Footstock, base, aluminum pipe and phase-change heat-storage material；Footstock is made up of plugboard and mounting ring；Plugboard is circular plate body part, inserts Fishplate bar is provided with several aluminum pipe installing holes；The periphery of mounting ring is provided with the screw of some installations, and mounting ring is located at plugboard Top and be connected with the neighboring of plugboard one, so that shape between the upper surface of mounting ring and the upper surface of plugboard Become a reserved phase change expansion space；Base is integrally made up of base plate and skirtboard, and base plate is circular plate body part；The center of circle of base plate Place is provided with the centre bore of circle；Skirtboard is arranged on the neighboring, upper end of base plate and is connected with base plate one；The number that aluminum pipe is arranged Measure identical with the quantity of the aluminum pipe installing hole on the plugboard of footstock；Each aluminum pipe hangs down between the plugboard of footstock and the base plate of base Straight setting；The lower end of each aluminum pipe is fixing with the upper surface ultrasonic bonding mode of the base plate of base to be connected；The upper end of each aluminum pipe with Corresponding aluminum pipe installing hole grafting on the plugboard of footstock；Phase-change heat-storage material is filled in each aluminum pipe.

Hierarchical phase-change heat storage water tank the most according to claim 4, it is characterised in that: described outlet pipe has connected Horizontal pipeline section and vertical pipeline section, outlet pipe entirety is L-shaped；Faucet, water outlet is connected in the external port of the horizontal pipeline section of outlet pipe The horizontal tube section of pipe is positioned at the top of the coil pipe of the first coil pack；The vertical pipeline section of outlet pipe is through the end of phase change material device The axis of centre bore tailing edge phase change material device of the base plate of seat protrudes upward, and the upper port of the vertical pipeline section of outlet pipe with The upper plate of phase change material device is close.