CN202328717U - Combined heat source variable-mode water boiler - Google Patents

Abstract

The utility model provides a combined heat source variable-mode water boiler, which includes an electric heater, a heating heat source exchanger, a boiled water heat source exchanger and a controller, wherein the heating heat source exchanger utilizes the heating heat source for primary heating for tap water; the boiled water heat source exchanger utilizes the boiled water heat source for secondary heating for tap water; the secondary heated tap water flows through the controller and enters the electric heater; the flow and the temperature of the secondary heated tap water are measured by the controller, and power of the electric heater is controlled by the controller; the secondary heated tap water is boiled by the electric heater; and one way of the boiled water flows to a boiled water supply port of a water boiler, while the other way of the boiled water flows to a boiled water inlet of the boiled water heat source exchanger. According to the utility model, the heating is used for the primary preheating to tap water, and boiled water is used for secondary heating to the tap water, so that requirements of people for lukewarm water and boiled water at different seasons can be met, and meanwhile, heating and thermal circulation substitute a great mass of electric energy for heating, so that the electrical load is reduced.

Description

A kind of composite heat power supply becomes the pattern boiler

Technical field

The present invention relates to the thermal energy exchange technical field, be specially a kind of composite heat power supply and become the pattern boiler.

Background technology

Existing large-scale boiler mainly contains storage-type boiler, instant full electricallly heated water boiling vessels, instant full electrical heating temperature boiler etc.

Storage-type electric water-boiling device principle is simple, and is easy to use, and environmental condition is not had very high requirement, thereby is the leading products on the market.It is stored in the storage tank after mainly using electric heater unit that a certain amount of cold water is heated to boiling, supplies the people to use, and begins to heat new boiling water after using up again.The full electricallly heated water boiling vessels partial cancellation of instant heating storage tank, the instant electric heater unit that uses was boiled with water when the user used boiling water; Instant full electrical heating temperature boiler has increased heat-exchanger rig on the basis of the full electricallly heated water boiling vessels of instant heating, can when the user needs warm water, give cold water with the part transfer of heat of boiling water, thereby realize purpose of energy saving.

The subject matter of storage-type electric water-boiling device is: 1, general boiler is when unmanned use for a long time, and its heater still works on, and has increased unnecessary electric energy loss on the one hand; Make drinking water repeat heating on the other hand; Water quality is stale, is prone to fouling, is unfavorable for health.2, cold, the hot water of general boiler do not separate, and many times our first glass of drinking is boiling water, but a large amount of immediately cold water get into heaters.Before heating was accomplished next time, what we drank all was cool hot mixing water, not enough health.3, in order to guarantee health, boiler all only provides boiling water.And most people are after having connect boiling water, wait it to be cooled to just can drink behind the lower temperature again, especially in summer.So both caused and drunk inconvenience, wasted lot of energy again.

Instant heating type boiler has avoided repeating to heat the power consumption that is brought, but because of the circuit power restriction makes that its boiling water flow is very little, can't satisfy normal use.Instant heating temperature boiler utilizes boiling water backflow preheat cold water, has reduced the heating consumed power, but (the boiling water demand was very big when weather was colder especially in the winter time) has no energy-saving effect when boiling water is provided.The more important thing is that all electric water-boiling devices all are to use electrical heating merely at present.Electric energy is the very high energy of a kind of grade, belongs to significantly " high energy is low to be used " with the electric energy heating.Therefore, from the angle of energy " matter ", using electric energy heating boiling water merely is a kind of huge energy dissipation.At present, the boiler on the market is whole thermals source with electricity basically, takes the mode of heating of " heating with electricity ", does not also have a kind of boiler device that utilizes multiple thermal source and realization " heating with heat ".

Summary of the invention

The technical problem that solves

For solving the problem that exists in the prior art, the present invention proposes a kind of composite heat power supply and become the pattern boiler.

Technical scheme

Technical scheme of the present invention is:

Said a kind of composite heat power supply becomes the pattern boiler, comprises electric heater, it is characterized in that: also include heating installation thermal source heat exchanger, boiling water thermal source heat exchanger and controller; Heating installation thermal source heat exchanger has four interfaces, is respectively heating installation inlet, heating outlet, running water inlet and exported by hot tap-water, and heating installation thermal source heat exchanger utilizes the heating installation thermal source that running water is carried out the heating first time; Boiling water thermal source heat exchanger has four interfaces; Be respectively and once receive hot tap-water inlet, secondary to receive hot tap-water outlet, boiling water inlet and warm water supply opening; Be communicated with the hot tap-water outlet that once receives of heating installation thermal source heat exchanger by the hot tap-water inlet, boiling water thermal source heat exchanger utilizes the boiling water thermal source that running water is carried out the heating second time; Secondary is flowed through by hot tap-water and is got into electric heater behind the controller; Controller is measured flow and the temperature that secondary receives hot tap-water; And control electric heater capacity; Electric heater receives hot tap-water boiled the secondary that flows into, and boiling water one tunnel flow to the boiling water supply opening of boiler, and another road of boiling water flows into the boiling water inlet of boiling water thermal source heat exchanger.

Beneficial effect

The present invention carries out a preheating through heating installation to running water; Through boiling water running water is carried out the secondary preheating; Can either satisfy the demand of Various Seasonal people, utilize heating installation and thermal cycle to replace most of electric energy heating simultaneously, reduce electric load warm water and boiling water.Theoretical Calculation result shows that in Various Seasonal, the present invention all has remarkable energy saving effect, and can realize boiling water, warm water supply easily.

Description of drawings

Fig. 1: structural representation of the present invention;

Wherein: 1, heating installation inlet; 2, running water inlet; 3, heating installation thermal source heat exchanger; 4, exported by hot tap-water; 5, entered the mouth by hot tap-water; 6, boiling water thermal source heat exchanger; 7, temperature sensor; 8, flow sensor; 9, electric heater; 10, boiling water supply opening; 11, secondary is exported by hot tap-water; 12, boiling water inlet; 13, warm water supply opening; 14, heating outlet; 15, controller.

The specific embodiment

Below in conjunction with specific embodiment the present invention is described:

Present embodiment is primarily aimed at the public place that has the central heating condition in north China, and for people provide sufficient boiling water, warm water supply, " composite heat power supply " of this product utilization mainly comprises boiling water thermal source, heating installation thermal source and electric heater thermal source etc.

Composite heat power supply described in the present embodiment becomes the pattern boiler, comprises electric heater 9, heating installation thermal source heat exchanger 3, boiling water thermal source heat exchanger 6 and controller 15.

Heating installation thermal source heat exchanger 3 has four interfaces; Be respectively heating installation inlet 1, heating outlet 14, running water inlet 2 and once receive hot tap-water outlet 4; Heating installation inlet 1 connects outside heating installation feed pipe; Heating outlet 14 connects outside heating installation return pipe, and running water inlet 2 connects outside water service pipe, and heating installation thermal source heat exchanger 3 utilizes outside heating installation thermal source that running water is carried out the heating first time.

Boiling water thermal source heat exchanger 6 has four interfaces; Be respectively and once receive hot tap-water inlet 5, secondary to receive hot tap-water outlet 11, boiling water inlet 12 and warm water supply opening 13; Be communicated with the hot tap-water outlet 4 that once receives of heating installation thermal source heat exchanger by hot tap-water inlet 5, boiling water thermal source heat exchanger 6 utilizes the boiling water thermal source that provides from electric heater 9 that running water is carried out the heating second time.

Secondary receives hot tap-water controller 15 back of flowing through to get into electric heaters 9; Controller is measured flow and the temperature that secondary receives hot tap-water through temperature sensor 7 and flow sensor 8; And control electric heater 9 power; Electric heater 9 receives hot tap-water boiled the secondary that flows into, and boiling water one tunnel flow to the boiling water supply opening 10 of boiler, and another road of boiling water flows into the boiling water inlet 12 of boiling water thermal source heat exchanger.

The present invention has following four kinds of mode of operations:

Mode of operation one: no heating installation thermal source, supply boiling water

Current get into heating installation thermal source heat exchanger, boiling water thermal source heat exchanger successively from the running water inlet, because both there be not Central Heating Providing, do not have boiling water to reflux again; So the time two neither work of heat exchanger, running water keeps initial temperature, when flowing through controller; Temperature sensor, flow sensor obtain current temperature and flow respectively; Calculate acquisition with the boiled required power of water, and regulate the heater power value, make current when flowing out heater, be heated to boiling just.Flowed out through the boiling water supply opening by boiled water, supply people to drink.

Mode of operation two: no heating installation thermal source, supply warm water

Current get into heating installation thermal source heat exchanger from the running water inlet, because no Central Heating Providing, cold water keeps initial temperature to get into boiling water thermal source heat exchanger; At this moment, the boiling water that seethes with excitement in the heater does not directly flow out boiler, but gets into boiling water thermal source heat exchanger through mozzle; Boiling water, cold water carry out heat exchange in boiling water thermal source heat exchanger; Boiling water becomes warm water afterwards, flows out through the warm water supply opening, supplies people to supply to drink; Cold water by the boiling water preheating after temperature raise, get in the electric heater and continue to be heated to boiling, flow into boiling water thermal source heat exchanger again and continue preheating cold water, so circulation.

Energy-saving effect was obvious when boiler was worked under this kind pattern.And in three seasons of spring and summer autumn, most of people warm water of all can being willing to drink, thereby the working time of pattern two is longer.

Mode of operation three: heating installation thermal source, supply boiling water are arranged

When current get into heating installation thermal source heat exchanger from the running water inlet, be preheated to higher temperature, get into boiling water thermal source heat exchanger again by heating installation.It is identical with pattern one to work afterwards.

Mode of operation four: heating installation thermal source, supply warm water are arranged

When current get into heating installation thermal source heat exchanger from the running water inlet, be preheated to higher temperature, flow into boiling water thermal source heat exchanger again by heating installation.It is identical to work in pattern two afterwards.

This pattern is the combination of pattern two, three; Because of the cold water that flows into boiling water thermal source heat exchanger is preheated to higher temperature by heating installation, so after the heat exchange of boiling water process, temperature reduces little; What supply is " high-temperature water ", and this has also met the drinking-water demand in people's winters to a certain extent.

Pattern three, four mainly utilizes the heat of heating installation to replace most of electric energy heating.

Boiler works in pattern for the moment, and the electrical heating load is maximum, can guarantee that the boiling water flow is not less than 100L/h, but this mode of operation is very short service time; When working in other three kinds of patterns, safe in utilization in order to guarantee, control boiling water (warm water) flow is no more than 300L/h.

Below analyze from the energy-saving effect of design emphatically.

(1) analysis on energy saving effect in three seasons of spring and summer autumn

At first, make following hypothesis:

1, is 90 days in three seasons of spring and summer autumn;

2, three season running water mean temperature T ₀=10 ℃;

3, summer, boiling water, warm water demand percentage were made as 1: 9, and spring and autumn boiling water, warm water demand percentage were made as 1: 4, then can be regarded as three season aggregate demand be V, three season the boiling water demand be about 1/6V, the warm water demand is about 5/6V;

4, the efficiency of heating surface Instant heating type, the storage-type boiler is 100%, and puts aside that the storage-type boiler repeats heating;

Known boiling water temperature T _k=100 ℃, cold water is through temperature T after the preheating ₁=67 ℃.

If this boiler power consumption of the present invention is Q ₁, conventional storage-type boiler power consumption is Q ₂, then have

${\mathrm{<figure-callout\; id="1"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_1=\frac{1}{6}{\mathrm{Vrc}}_p(T_k-T_0)+\frac{5}{6}{\mathrm{Vrc}}_p(T_k-T_1),{\mathrm{<figure-callout\; id="2"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_2={\mathrm{Vrc}}_p(T_k-T_0)$

Calculating can get energy-saving efficiency $h=\frac{Q_2-Q_1}{{\mathrm{<figure-callout\; id="2"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_2}=1-\frac{(T_k-T_0)+5(T_k-T_1)}{6(T_k-T_0)}=52.8\%$

Annotate: conventional storage-type boiler long-time nobody when drinking, heating is still continuing, so for the drinking water of same amount, storage-type boiler actual power consumption amount will be much larger than above calculating gained power consumption.Therefore, under the actual conditions, the energy-saving efficiency of this boiler can be higher than above-mentioned theory result of calculation.

(2) winter is based on the analysis on energy saving effect of heating

At first, make following hypothesis:

1, winter running water mean temperature T ₀=5 ℃;

2, winter, boiling water, warm water demand percentage were made as 1: 2, and establishing the winter aggregate demand is V, then can be regarded as to such an extent that the boiling water demand is about 1/3V, and the warm water demand is about 2/3V; ${\mathrm{<figure-callout\; id="1"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_1=\frac{1}{3}{\mathrm{V\&rho;\; c}}_P(T_k-T_1)+\frac{2}{3}{\mathrm{V\&rho;\; c}}_P(T_k-T_2),{\mathrm{<figure-callout\; id="2"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_2={\mathrm{V\&rho;\; c}}_P(T_k-T_0)$

3, the efficiency of heating surface Instant heating type, the storage-type heater is 100%;

4, the heat supply in winter mode is central heating;

Known boiling water temperature T _k=100 ℃, temperature T after the preheating of cold water process heating installation ₁=75 ℃; , pass through temperature T after the boiling water preheating again ₂=85 ℃.

If this boiler power consumption is Q ₁, conventional storage-type boiler power consumption is Q ₂, then have

${\mathrm{<figure-callout\; id="1"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_1=\frac{1}{3}{\mathrm{V\&rho;c}}_P(T_k-T_1)+\frac{2}{3}{\mathrm{V\&rho;c}}_P(T_k-T_2),{\mathrm{<figure-callout\; id="2"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_2={\mathrm{V\&rho;c}}_P(T_k-T_0)$

If do not consider the heating installation heat exhaustion, merely from the saves energy angle, this boiler energy-saving efficiency

$h_{\mathrm{jd}}=\frac{Q_2-Q_1}{{\mathrm{<figure-callout\; id="2"\; label="Q"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">Q</figure-callout>}}_2}=1-\frac{(T_k-T_1)+2(T_k-T_2)}{3(T_k-T_0)}=80.7\%$

Below the consumption of comprehensive heating installation carry out the energy-saving efficiency analysis.At present how the heating installation origin of heat obtains through coal-fired, and the electric energy of China more than 70% also from being the thermal power generation of fuel with the coal.Therefore, can composite heat power supply boiler and existing conventional boiler be compared, calculate its energy-saving efficiency from the angle of consumption coal.

Known: the generating rate of standard coal consumption is 0.4kg/Kwh, can be scaled H _D=9000kJ/kg, the calorific value H of coal _M=29306kJ/kg, generating efficiency η _D=35%, heat supply efficiency η _M=85%

$M_1=\frac{Q_1}{h_D{H}_D}+\frac{{\mathrm{Vrc}}_p(T_1-T_0)}{h_M{H}_M},$ $M_2=\frac{Q_2}{h_D{H}_D}$

So energy-saving efficiency does

$h_{\mathrm{jm}}=\frac{M_2-M_1}{{\mathrm{<figure-callout\; id="2"\; label="M"\; filenames="HDA0000109172520000011.png"\; state="\{\{state\}\}">M</figure-callout>}}_2}=1-\frac{h_M{H}_M[(T_k-T_1)+2(T_k-T_2)]+3h_D{H}_D(T_1-T_0)}{3h_M{H}_M(T_k-T_0)}=71.4\%$

Annotate: in fact, the production of electric energy from equipment, technology, transport, various aspects such as maintenance require all much higherly than burning the coal heating, thereby its expense is also far above the heating cost of identical energy.Therefore, cold water is carried out preheating, not only reduced coal consumption, more realized " the rudimentary energy " replacement " high energy ", all realized energy-conservation from " amount ", " matter " two aspects with heating installation.

Comprehensive above the analysis, this product design has very remarkable energy saving effect, and can realize boiling water, warm water supply easily, is suitable for the public place (hospital, school, station, office space, etc.) of northern China most of areas.Therefore, this product design has favorable actual application value.

Claims (1)

1. a composite heat power supply becomes the pattern boiler, comprises electric heater, it is characterized in that: also include heating installation thermal source heat exchanger, boiling water thermal source heat exchanger and controller; Heating installation thermal source heat exchanger has four interfaces, is respectively heating installation inlet, heating outlet, running water inlet and exported by hot tap-water, and heating installation thermal source heat exchanger utilizes the heating installation thermal source that running water is carried out the heating first time; Boiling water thermal source heat exchanger has four interfaces; Be respectively and once receive hot tap-water inlet, secondary to receive hot tap-water outlet, boiling water inlet and warm water supply opening; Be communicated with the hot tap-water outlet that once receives of heating installation thermal source heat exchanger by the hot tap-water inlet, boiling water thermal source heat exchanger utilizes the boiling water thermal source that running water is carried out the heating second time; Secondary is flowed through by hot tap-water and is got into electric heater behind the controller; Controller is measured flow and the temperature that secondary receives hot tap-water; And control electric heater capacity; Electric heater receives hot tap-water boiled the secondary that flows into, and boiling water one tunnel flow to the boiling water supply opening of boiler, and another road of boiling water flows into the boiling water inlet of boiling water thermal source heat exchanger.

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