CN100465543C

CN100465543C - Electric water heater

Info

Publication number: CN100465543C
Application number: CNB2006100354675A
Authority: CN
Inventors: 谢庆俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-09
Filing date: 2006-05-09
Publication date: 2009-03-04
Anticipated expiration: 2026-05-09
Also published as: CN1865802A

Abstract

The invention relates to an improved electric water heater. Wherein, it comprises a frame, a control circuit, a container, a water inlet and a water outlet mounted on the frame; it is characterized in that: it also comprises instant heater and a preheating heater inside the container; the water inlet of instant heater has a flow sensor, while the water outlet has a temperature-control connector; a constant-temperature tube valve is between the instant heater and the preheating heater; a constant-temperature valve with adjustable flux is arranged between the instant heater and the water outlet; said water inlet is connected to the container, the constant-temperature tube valve and the constant-temperature valve; the container, the constant-temperature tube valve, the instant heater and the constant-temperature valve are serially connected. The invention preheats with small power and instantly heats secondarily, to reduce the consumed power and reduce the working current.

Description

Electric heater

Technical field

The invention belongs to plumbing, particularly a kind of improved electric heater.

Background technology

At present, the leaving water temperature of known quick electric water heater is regulated by the manual adjustment water flow.When water flow reduced suddenly, leaving water temperature rising 10 was suddenly spent to tens degree, and the danger of being scalded is arranged.

Quick electric water heater is the electricity-saving type electric heater, but the flow of quick electric water heater is only during 4L, and its heating power should be about 8KW, and general user's electric wire holds be can't stand so big electric current and can not popularize use.Though the storage-type electric water heater electric current is little, heat dozens of minutes in advance to a few hours, can not accomplish the instant purpose of opening, because of heat time heating time long, heat scatters and disappears big, the user who has is in the electricity consumption heated condition for convenience for a long time, long electricity wasting of time.

Summary of the invention

Technical problem to be solved by this invention is, a kind of have energy-conservation, power saving, pre-instant electric water heater that electrical power is little are provided.

Technical problem to be solved by this invention is achieved by the following technical solution: a kind of electric heater, it mainly comprises shell, is installed in control circuit, inner bag, water inlet, delivery port on the shell, the emphasis part is it also comprises being hot heater and the pre-heated heater that is positioned at inner bag; Be that the hot heater inlet end has water flow sensing unit, promptly the hot heater water outlet end is provided with the temperature control joint, is provided with a Constant-temp. pipeline valve between hot heater in sight and the pre-heated heater; Described be to be provided with the adjustable thermostatic valve of flow between hot heater and the described delivery port; Described control circuit comprises control circuit board; also comprise the display circuit board that is connected with control circuit board, buzzer, instant heating overtemperature prote device, temperature controller, electric leakage coil, overtemperature prote device, preheating temperature controller, microprocessor and to the dc source of microprocessor power supply, described water flow sensing unit is connected with described control circuit board.

Electric heater of the present invention adopts small-power preheating and the heating of instant heating secondary, has reduced electric power, reduces operating current, and can realize plug and play.By between pre-, the instant heating Constant-temp. pipeline valve being set, it can to being that hot heater provides an amount of hot water, guarantee that water temperature is constant according to using the leaving water temperature requirement, guarantees the hot water supply when accomplishing all the time to be hot heater performance peak power.At Instant heating type delivery port the constant temperature flow valve is housed, avoided leaving water temperature to increase suddenly scalding the people and the instant heating temperature too high, cause the danger of Instant heating type inlet tube and outlet tube booster, can also control the flow that the user likes and temperature can not change according to the required size of regulating flow of user.In addition, by using Constant-temp. pipeline valve and constant temperature flow valve, they have effectively controlled leaving water temperature, prevent that water temperature is too high, cause energy to run off and waste, leaving water temperature can add an amount of cold water when being higher than the design temperature of two valves, thereby reaches energy-conservation and prolong the purpose of shower water practice.

Description of drawings

Fig. 1 is the structural representation of thermostatic electric water heater of the present invention;

Fig. 2 is the electrical schematic diagram of thermostatic electric water heater of the present invention;

Fig. 3 is the water route sketch of thermostatic electric water heater of the present invention.

The specific embodiment

Referring to Fig. 1, a kind of electric heater, it mainly comprises shell 1, is installed in control circuit 14, inner bag 2, water inlet 5, inner bag water inlet, inner bag delivery port, the Constant-temp. pipeline valve 4 on the shell 1 and the water flow sensing unit 9 that is connected successively, Instant heating type water inlet 10, is hot heater 13, Instant heating type delivery port 12, temperature control joint 11, delivery port 7; Pre-heated heating tube is arranged in the inner bag 2; Above-mentioned Constant-temp. pipeline valve 4 is positioned at inner bag delivery port place, is provided with the adjustable thermostatic valve of flow 8 before above-mentioned delivery port 7; Described water inlet 5 links to each other with inner bag 2, Constant-temp. pipeline valve 4 and thermostatic valve 8 respectively, inner bag 2, Constant-temp. pipeline valve 4, water flow sensing unit 9, is that hot heater 13, temperature control joint and thermostatic valve 8 are connected successively.

Referring to Fig. 3, at first the water in the inner bag 2 is heated to uniform temperature (generally can be set at 75 ℃) by pre-heated heating tube 3, when the user uses, pre-heated heating tube 3 heat in advance stopped automatically in several minutes after, startup is a hot heater 13, the thermostatically controlled temperature height that the flow that Constant-temp. pipeline valve 4 is set according to the user is adjustable and the information of flow size, automatically take out in the inner bag 2 and flow into instantaneously heated type heater 13 after an amount of high-temperature water and the cold water mix and heat (generally can be heated to about 50 ℃), by being that the water that hot heater 13 heats flows to thermostatic valve 8 again, this thermostatic valve 8 becomes hot water and the cold water mix from water inlet user's acceptable bath water of design temperature (generally can be made as 38 ℃).

When the running water changes in flow rate, pre-hot water outlet can flow out a constant leaving water temperature all the time, it is that hot heater 13 heats that this steady temperature water outlet flows to again, the maximum temperature of Instant heating type heating-up temperature is upgraded to the several years to tens degree, when if the running water flow diminishes suddenly, when end did not have thermostat again, water temperature once can rise and ten spend to tens degree, at this moment is easy to the danger of being scalded.Add a constant temperature flow valve 8, no matter how how flow of inlet water changes it to remain water outlet is a steady temperature, when flow is too small, be that hot heater can heat very high temperature, leaving water temperature needs only temperature more so again, at this moment, constant temperature flow valve 8 can turn down the flow of Instant heating type delivery port 12 (water inlet of hot water of constant temperature flow valve 8) automatically, when Instant heating type flow of inlet water less than water flow sensing unit 9 close flow the time, water flow sensing unit 9 automatic disconnections, cut-out is the main power source of hot heater, stops Instant heating type heating.When Instant heating type temperature descended, constant temperature flow valve 8 can be opened flow of inlet water automatically, when flow reaches the turn-on flow rate of water flow sensing unit 9, and the water flow sensing unit closure, the Instant heating type beginning heated.Allow leaving water temperature remain a constant leaving water temperature, make the user to use safer, can also prolong water time, energy saving simultaneously.

Referring to Fig. 2; control circuit figure comprises control circuit board; the display circuit board that is connected with control circuit board, buzzer, instant heating overtemperature prote device, temperature controller, water flow sensing unit, electric leakage coil, overtemperature prote device, preheating temperature controller, microprocessor and to the dc source of microprocessor power supply, relay J 1, J4 and preheating heating tube polyphone and relay J 2, J3 and instant heating heating tube are connected on the control circuit board.The microprocessor control relay divides the secondary heating, and the first order is preheating, in order to reduce power, reduces operating current with early satisfying the instant hot purpose of user; At first disconnect with in the time of a few minutes the water in the small inner container being heated to 75 ℃ of left and right sides preheating temperature controllers, stop heating, pass through thermostatic valve constant temperature again, and then through the secondary Fast Heating, when carrying out second level heating, the first order does not heat, and it is about 50 ℃ that the second level is heated to the highest water temperature, the user is again according to the temperature required constant temperature flow valve of regulating, and making leaving water temperature is the optimal temperature of user.Second level Fast Heating plug and play need not to be incubated and reaches energy-conservation province purpose.

This electric heater controller has 90 ℃ of overtemperature protes of preheating; 60 ℃ of overtemperature protes of instant heating; the temperature sensor open circuit protecting function; by insulating Design to the water route; limited delivery port leakage current over the ground, and the double-deck earth leakage protective and the good antiscale property of (0.1S) outage are protected to guarantee personal safety and safe in utilization fast to have adopted electric leakage.Adopt dual constant temperature protection, even under situations such as temperature sensor damage or flow of inlet water sudden change, also can avoid accident to take place.

The present invention also has some other distortion or improvement.If those skilled in the art are subjected to the change or the improvement of the conspicuous unsubstantiality that inspiration of the present invention makes, all belong to the protection domain of claims of the present invention.

Claims

1, a kind of electric heater, it mainly comprises shell, is installed in control circuit, inner bag, water inlet, delivery port on the shell, it is characterized in that, and it also comprises being hot heater and the pre-heated heater that is positioned at inner bag; Be that the hot heater inlet end has water flow sensing unit, promptly the hot heater water outlet end is provided with the temperature control joint, is provided with a Constant-temp. pipeline valve between hot heater in sight and the pre-heated heater; Described be to be provided with the adjustable thermostatic valve of flow between hot heater and the described delivery port; Described control circuit comprises control circuit board; also comprise the display circuit board that is connected with control circuit board, buzzer, instant heating overtemperature prote device, temperature controller, electric leakage coil, overtemperature prote device, preheating temperature controller, microprocessor and to the dc source of microprocessor power supply, described water flow sensing unit is connected with described control circuit board.

2, electric heater according to claim 1 is characterized in that, described water inlet links to each other with thermostatic valve with inner bag, Constant-temp. pipeline valve respectively, inner bag, Constant-temp. pipeline valve, is that hot heater is connected successively with thermostatic valve.

3, electric heater according to claim 1 is characterized in that, described Constant-temp. pipeline valve and thermostatic valve be design temperature as required.

4, electric heater according to claim 2 is characterized in that, insulating Design is adopted in the water route, limits described delivery port leakage current over the ground.