CN201265963Y

CN201265963Y - Pressure bearing type solar water heater

Info

Publication number: CN201265963Y
Application number: CNU200820185858XU
Authority: CN
Inventors: 敖凯平; 万华新; 李余钱; 章友根
Original assignee: AO Smith China Water Heater Co Ltd
Current assignee: AO Smith China Water Heater Co Ltd
Priority date: 2008-09-11
Filing date: 2008-09-11
Publication date: 2009-07-01
Anticipated expiration: 2018-09-11

Abstract

The utility model relates to a pressure-bearing type solar water heater which belongs to the technical field of solar energy application and comprises a water storage liner and a solar energy heat collection device provided with a liquid transferring opening and a liquid return opening, wherein the bottom of the water storage liner is provided with a heat interchanging cavity provided with a water inlet and a water outlet, the upper surface of the heat interchanging cavity is coplanar with the bottom surface of the water storage liner, and the liquid transferring opening and the liquid return opening of the solar energy heat collection device are respectively communicated with the water inlet and the water outlet of the heat interchanging cavity to form a circulation loop. Furthermore, the structure of the pressure-bearing type solar energy heat collector is simpler, the water storage space of the water storage liner is not reduced, because the higher temperature water and the lower temperature water inside the heat interchanging cavity and the water storage liner respectively tends to be raised and lowered, the upper surface of the coplanar position contacts the lowest-temperature water inside the water storage liner all the time, and the lower surface of the coplanar position contacts the highest-temperature water inside the heat interchanging cavity all the time, thereby the maximum temperature difference is formed between the upper surface and the lower surface of the coplanar position so as to obtain the best heat interchanging effect and obviously increase the obtained hot water quantity.

Description

Pressure-bearing type solar water heater

Technical field

The utility model relates to a kind of solar water heater, and especially a kind of pressure-bearing type solar water heater belongs to application of solar.

Background technology

Understand according to the applicant, existing solar water heater mainly contains non-bearing type and pressure-bearing type two classes.The tank of non-bearing type solar water heater directly is communicated with solar energy heat collection pipe, so the user directly uses the hot water of solar energy heating, does not have middle heat exchange link.Owing to do not have pressure in the tank, therefore have the hypodynamic shortcoming of water impact when using; In addition, owing to can't add anti-icing fluid in the water, therefore there is the possibility of freezing in the external water pipe that is connected with solar energy heat collection pipe in cold season.The tank of pressure-bearing type solar water heater (being commonly referred to inner bag) is of coupled connections by heat exchange structure and solar energy heat collection pipe circulation heat absorption.Because inner bag directly is not communicated with solar energy heat collection pipe, therefore can have interior pressure, thus the powerful current of output impulsive force; Can add anti-icing fluid in the circulation heat transfer medium of solar energy heat collection pipe simultaneously, thereby avoid freezing.

Retrieval is found, application number is " the wall-hanging solar water heater " that 200620087250.4 Chinese patent application has been announced a kind of pressure-bearing type, this water heater comprises the water tank and the heat collector of split, heat collector is positioned at the below of water tank, cold water inlet pipe that is communicated with the water tank cavity bottom and the hot water out pipe that is communicated with water tank cavity top are housed on the water tank, the thermal-collecting tube that heat collector includes the thermal-arrest dielectric cavity and is communicated with the thermal-arrest dielectric cavity, be provided with heat transferring medium chamber in the water tank cavity with the water tank cavity sealing, be communicated with thermal medium pipe and cold medium tube between heat transferring medium chamber and the thermal-arrest dielectric cavity, cold water inlet pipe and hot water out pipe are that the bottom surface hermetically passing from water tank enters water tank cavity, thermal medium pipe and cold medium tube are that the bottom surface hermetically passing from water tank enters the heat transferring medium chamber, the upper port of thermal medium pipe is positioned at the middle and upper part in heat transferring medium chamber, the lower port of cold medium tube is positioned at the lower end of thermal-arrest dielectric cavity, is positioned at the thermal medium pipe on the inner in heat transferring medium chamber to be set with thermal sleeve.

Though experiment showed, that this water heater is easy for installation, because of " courage in the courage " process structure complexity being set, having reduced the water space of inner bag, and heat exchange efficiency and hot water must be measured all not ideal enough.

The utility model content

The purpose of this utility model is: the shortcoming at above-mentioned existing pressure-bearing type solar water heater exists, by architecture advances, the high pressure-bearing type solar water heater of a kind of heat exchange efficiency is proposed, and must measure thereby improve hot water.

In order to reach above purpose, pressure-bearing type solar water heater of the present utility model comprises water storage liner and has the solar energy heat collector of infusion port and liquid return hole, the bottom of described inner bag is provided with the heat exchanging chamber with water inlet and delivery port, the basal surface coplane of the upper surface of described heat exchanging chamber and inner bag, the infusion port of described solar energy heat collector and liquid return hole are communicated with the water inlet and the delivery port of described heat exchanging chamber respectively, constitute closed circuit.

Heat exchanging chamber is arranged on the inner bag bottom, and obviously structure is comparatively simple, and does not reduce the water space of inner bag.What is more important, in inner bag and the heat exchanging chamber, because having respectively, the higher and lower water of temperature rises and downward trend, therefore the upper surface at its coplane place contacts with the minimum water of temperature in the inner bag all the time, and lower surface contacts with the highest water of temperature in the heat exchanging chamber all the time, thereby obtain best heat exchange effect because of the coplane place has formed maximum temperature difference up and down, significantly improving hot water must measure.

Of the present utility model further improving is that described coplane is an epirelief spherical crown shape, so not only can increase heat exchange area as far as possible, and makes the hot water of upper surface in the heat exchanging chamber produce the trend of being gathered to the spherical crown middle part by periphery, has further improved heat exchange efficiency.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of the utility model preferred embodiment.

The specific embodiment

Embodiment one

Present embodiment is a kind of wall-hanging solar water heater of inner bag pressure-bearing, as shown in Figure 1, mainly is made of water storage liner and solar energy heat collector.It is cylindric that the inner bag 2 of parcel heat-insulation layer 1 is setting, and top is provided with the hot water outlet pipe 3 who meets the hot water tap, and the bottom is provided with and connects the cold water inlet 4 at water source from the beginning, therefore wherein has certain interior pressure.Cylinder body 7 bottoms of inner bag 2 embed top and are at the bottom of the courage of epirelief spherical crown shape 6.6 extend cylindrical section downwards at the bottom of this courage, and the external diameter of this cylindrical section becomes tight fit with the internal diameter of cylinder body 7, so the cylindrical of the base of cylinder body 7 and cylindrical section can form desirable being tightly connected by fillet welding.On this basis, embed bottom 8 in the indent that 6 cylindrical sections form at the bottom of the courage, the external diameter of bottom 8 also becomes tight fit with the internal diameter of cylindrical section, so fenestra can form desirable being tightly connected by fillet welding outside the base of cylindrical section and the bottom, and manufacturing process is practical.As a result, formed heat exchanging chamber 20 in inner bag 2 bottoms.The bottom of this heat exchanging chamber is provided with water inlet 19 and delivery port 18, the basal surface coplane of its upper surface and inner bag.

Solar energy heat collector for being fit to be placed in the wall-hanging solar heat collector in the balcony outside very much, and this heat collector contains the vacuum tube 10 of one group of level, and the two ends of vacuum tube 10 plug-in mounting respectively are supported on vertical the tail carriage 9 and header shell 12.Be fixed with the box-connected internal pipe 11 that is communicated with vacuum pipe inner cavity heat transferring medium liquid respectively in the header shell 12.The box-connected internal pipe 11 of solar thermal collector is provided with infusion port 16 and liquid return hole 17, is communicated with the water inlet 19 and the delivery port 18 of heat exchanging chamber respectively, constitutes the closed circuit of heat exchange.

During work, the solar energy that each vacuum tube 10 absorbs gathers box-connected internal pipe 11 by the thermosyphon action of heat transferring medium liquid in the pipe.Then, the heat transferring medium liquid with higher temperature rises to heat exchanging chamber 20 by hot circulating solution pipe 15, and the heat transferring medium liquid that temperature is lower in the heat exchanging chamber 20 then is back in the box-connected internal pipe 11 by cold circulation fluid pipe 14.The heat transferring medium liquid that enters heat exchanging chamber 20 is in all the time and rises and have the trend of gathering the middle part, thus with inner bag in the water at low temperature of sedimentation downwards 6 spherical crown surface at the bottom of courage form the maximum temperature difference up and down, produce best heat exchange effect.Experiment shows that the existing product that the hot water of present embodiment must be measured than drift lattice improves 30-50%, and effect is very remarkable.

In addition, cause the heat exchanger effectiveness that vacuum tube is pressed in producing and the loss of heat transferring medium liquid causes to descend for fear of the thermal expansion of heat transferring medium liquid, heat exchanging chamber 20 also is communicated with external expansion drum 22 by liquid supplementation pipe 21, can address the above problem like this with killing two birds with one stone.

In a word, present embodiment has following major advantage:

1, high efficient heat exchanging: because inner bag bottom forms the heat convection effect with heat exchanging chamber top, and spherical crown shape heat-transfer surface increased effective heat exchange area, so heat exchange efficiency is apparently higher than the conduction or the radiation heat transfer of routine, and the hot water that significantly improves must be measured.

2, cost economy: simple in structure, industry is practical, manufacturing cost is starkly lower than existing " courage in the courage " or coil pipe heat exchange structure, and do not account for the water space of inner bag.

3, semi-automatic fluid infusion: in expansion drum, reserve half jar of heat transferring medium liquid that adds anti-icing fluid,, thereby realize automatic liquid supply by drop.

In addition to the implementation, the utility model can also have other embodiments.For example, the upper surface of described heat exchanging chamber can be provided with the built-in expansion drum (as smoke pipe) that extend in the inner bag, to replace external expansion drum 22; For another example, the heat exchange circulating pump is housed in the closed circuit, or the like.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. pressure-bearing type solar water heater, comprise inner bag and solar energy heat collector with infusion port and liquid return hole, it is characterized in that: the bottom of described inner bag is provided with the heat exchanging chamber with water inlet and delivery port, the basal surface coplane of the upper surface of described heat exchanging chamber and inner bag, the infusion port of described solar energy heat collector and liquid return hole are communicated with the water inlet and the delivery port of described heat exchanging chamber respectively, constitute closed circuit.

2. according to the described pressure-bearing type solar water heater of claim 1, it is characterized in that: described coplane is an epirelief spherical crown shape.

3. according to claim 1 or 2 described pressure-bearing type solar water heaters, it is characterized in that: described heat exchanging chamber is communicated with external expansion drum by liquid supplementation pipe.

4. according to claim 1 or 2 described pressure-bearing type solar water heaters, it is characterized in that: the upper surface of described heat exchanging chamber is provided with the built-in expansion drum that extend in the inner bag.

5. according to the described pressure-bearing type solar water heater of claim 3, it is characterized in that: described solar energy heat collector is the wall-hanging solar heat collector, described heat collector contains one group of horizontal vacuum pipe, and the two ends of described vacuum tube plug-in mounting respectively are supported on vertical the tail carriage and header shell.

6. according to the described pressure-bearing type solar water heater of claim 5, it is characterized in that: be fixed with the box-connected internal pipe that is communicated with vacuum pipe inner cavity heat transferring medium liquid respectively in the described header shell, described box-connected internal pipe is provided with infusion port and liquid return hole, be communicated with the water inlet and the delivery port of heat exchanging chamber respectively, constitute the closed circuit of heat exchange.

7. according to the described pressure-bearing type solar water heater of claim 6, it is characterized in that: the cylinder body bottom of described inner bag embeds top and is at the bottom of the courage of epirelief spherical crown shape, extend cylindrical section at the bottom of the described courage downwards, the external diameter of described cylindrical section becomes tight fit with the internal diameter of described cylinder body.

8. according to the described pressure-bearing type solar water heater of claim 7, it is characterized in that: embed bottom in the indent that cylindrical section forms at the bottom of the described courage, the external diameter of described bottom becomes tight fit with the internal diameter of described cylindrical section, forms the heat exchanging chamber of inner bag bottom.

9. described according to Claim 8 pressure-bearing type solar water heater is characterized in that: the base of the base of described cylinder body and the cylindrical of described cylindrical section and described cylindrical section and the cylindrical of described bottom are tightly connected by fillet welding respectively.

10. according to the described pressure-bearing type solar water heater of claim 9, it is characterized in that: the heat exchange circulating pump is housed in the described closed circuit.