TWM547648U - Heating control device of energy-saving and heat-storing electric water heater - Google Patents

Description

Heating control device for energy-saving heat storage electric water heater

The present invention mainly relates to a water inlet in a water storage bucket of a heat storage type electric water heater, and is provided with a water temperature detector installed therein and a water outlet opening therein for allowing water to flow into the barrel. The cold water fills the chamber, so that when the hot water is continuously supplied, the water temperature of the introduced water is detected by the water temperature detector, and the heater in the barrel is kept in an optimal heating state.

The general heat storage type electric water heater mainly comprises a water storage tank having a heat insulating effect, a heater for heating the water in the barrel, and a cold water inlet pipe for introducing cold water to the water storage tank. And a hot water outlet pipe for allowing the hot water in the barrel to be supplied, and a water temperature detector capable of detecting the hot water temperature in the water tank is installed in the water storage tank, and at the same time, the heat storage type electric water heater is provided. The controller for presetting the upper limit water temperature and the lower limit water temperature of the hot water, and detecting that the hot water in the barrel is lower than the preset lower limit water temperature through the main water temperature detector, the heater pair is activated The water in the barrel is heated, and if the water temperature detector detects that the hot water in the barrel reaches the preset upper limit water temperature, the heater stops heating the water in the barrel.

At the same time, in order to achieve high energy-saving standards, the preset range of the upper and lower water temperatures of the above-mentioned barrels is usually in the range of 10 ° C, that is, the upper limit of the general hot water is preset to 65 ° C. The lower limit of the hot water temperature is preset to 55 ° C, that is, when the hot water temperature in the water storage tank is lower than the preset lower limit temperature of 55 ° C, the heater is activated and the water in the bucket is added. Hot, but when the hot water in the barrel is heated to the upper limit of the hot water temperature of 65 °C, the heater will stop heating the water. This heating control method is because the heat storage type electric water heater is not used for most of the time. At the end of the supply of hot water, during this period still need to be heated by the heater, in order to maintain the hot water in the barrel within the preset temperature range, but in order to solve the heating frequency is too frequent, and to prevent the heat energy is more easily lost at high temperatures Because of the large energy consumption, it is necessary to increase the preset range of the upper and lower limits of hot water to achieve the goal of high energy-saving standards. Currently, the current high energy-saving standard is usually set in the temperature range of 10 °C of the top standard.

However, the above-described energy-saving control method for the heater is in the case where the hot water is not supplied but is not used, but when the hot water is continuously supplied during use, the hot water in the tub is continuously supplied. When cold water is continuously replenished into the barrel, the hot water in the original water storage tank will be quickly lost, and the temperature of the hot water will be quickly lost until the hot water temperature drops to 55 ° C. The heater is activated to heat the water to supplement the heat. The purpose is to maintain the temperature of the hot water in the tank, which can be within the preset range of 55-65 °C.

However, the water temperature detectors of the general heat storage type electric water heaters are installed at the intermediate height in the barrel, and a baffle is also installed at the water inlet in the barrel of the cold water inlet pipe for the purpose of Prevent the cold water from being introduced and mix it with the hot water above the bucket, so that the cold water can stay in the bottom of the bucket as much as possible. When the hot water is used and continuously supplied from the bucket, the cold water will continue. Filling into the inflow tank until the water temperature detector in the middle of the barrel detects that the hot water temperature is lower than the lower limit of the hot water temperature, the heater at the bottom of the barrel starts to heat the water, but at the moment There is already more than half of the hot water in the barrel will be lower than the lower limit of the hot water temperature. If the hot water is still continuously supplied, and the cold water is continuously replenished, even though the heater continues to remain in the barrel. The water is constantly heated, but in fact the heat energy added by the heater will be far less than the heat. It can be lost, and the water in the barrel can not be heated above the preset lower limit temperature of the hot water. As a result, the temperature of the supplied hot water will continuously drop, and the user will feel the water temperature of the hot water is insufficient. It is also only possible to suspend the use of hot water and turn off the faucet. After waiting for a while, wait until the hot water in the water storage tank is heated again to the lower limit of the hot water temperature or higher, before the heat can be used again. Water, this is also a big loss of energy-saving heat storage electric water heaters.

In order to solve the above-mentioned lack of hot water temperature detection, the manufacturer has guided the outlet of the cold water inlet pipe to the position of the water temperature detector. As shown in the patent No. 089216499, an attempt is made to pass the cold water into the water pipe. The cold water introduced into the barrel is directly rushed toward the water temperature detector, so that the water temperature detector can instantly detect the temperature of the cold water entering the barrel, but the cold water introduced into the barrel will immediately mix with the hot water in the barrel. In addition, the water in the barrel is driven by the upward flow of water when the hot water is supplied, so that the water temperature detector cannot stably and accurately detect the temperature of the introduced cold water, so that the water temperature detector may detect The high and low water temperature causes the heater to heat up and sometimes stop, which affects the service life of the heater.

The reason is that in order to solve the aforementioned energy-saving heat storage type electric water heater, when the hot water supply is continuously supplied, it is impossible to immediately detect that the cold water is heated before the continuous loss of the hot water, and the temperature of the hot water is insufficient. In the occurrence of this, the new type is provided at the water inlet of the cold water inlet pipe in the water storage tank, and a cold water filled with a first-class port to fill the cold water is filled, and a water temperature detector is installed in the cold water filled room. The detector is configured to detect the temperature of the cold water filling the indoor water through the water temperature detector when the electric water heater continuously and continuously supplies the hot water, and if it is lower than the preset hot water minimum temperature of the electric water heater, The heater keeps the water in the barrel heated, so that the water temperature of the hot water continuously supplied by the electric water heater can be maintained for a longer and better state, and also allows The electric water heater can also achieve energy saving when it is not used to stop the supply of hot water.

The technical solution adopted by the novel to solve the technical problem is: installing a heater in the water storage bucket which can preset the hot water on the hot water and the lower limit temperature, and set a cold water inlet pipe and a water storage bucket The hot water outlet pipe further separates a cold water filling chamber at the water inlet of the cold water inlet pipe in the water storage tank, and a first-class port connected to the barrel is arranged in the cold water filling chamber, and the cold water is filled with the indoor equipment. Set a water temperature detector.

In the above solution, a conduit around the heater is connected to the nozzle.

In the above solution, the flow port is provided on the side of the cold water filling chamber.

In the above solution, the flow port is provided at the side bottom of the cold water filling chamber.

In the above solution, the flow port is provided at the top of the cold water filling chamber.

Therefore, through the cold water filling chamber covered by the cold water inlet in the water storage bucket of the above-mentioned electric water heater, and the water temperature detector installed in the cold water filling indoor, the electric water heater is continuously and continuously supplied with hot water. As long as the water temperature detector detects that the temperature of the cold water filled indoors is lower than the preset lower limit temperature of the electric water heater, the heating will always keep the water in the barrel heated, that is, the hot water in the water storage tank is continuously At the same time of supply, the heater will maintain a continuous heating state, so that the hot water in the barrel does not need to wait until the whole temperature drops to the lower limit of the hot water temperature, and then it can be immediately replenished and the hot water can be replenished. The best time for hot water supply.

1‧‧‧Water storage bucket

11‧‧‧ cold water inlet pipe

12‧‧‧ hot water outlet

13‧‧‧heater

14‧‧‧ Cold water filled room

141‧‧‧ drool

15‧‧‧Water temperature detector

16‧‧‧ catheter

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a side cross-sectional view of the present invention.

Figure 2 is a partial perspective view of the present invention.

Figure 3 is a partial side cross-sectional view of the present invention.

Figure 4 is a schematic view of the second embodiment of the present invention.

Fig. 5 is a schematic view of the third embodiment of the present invention.

Referring to FIG. 1 and FIG. 3, the heat storage type electric water heater of the present invention mainly comprises a water storage tank 1 with a cold water inlet pipe 11 for introducing a water source, and a hot water outlet pipe for supplying hot water to the barrel. 12, and a heater 13 for heating the water in the bucket is installed in the water storage tank 1, and the electric water heater is provided with a controller (not shown) capable of setting at least the upper and lower limits of the hot water.

In addition, the cold water inlet pipe 11 in the water storage tank 1 is further filled with a cold water filled with cold water which is introduced to fill the chamber 14, and a side of the cold water filling chamber 14 is opened to communicate with the inside of the water tank. The port 141 is opened, and the flow port 141 is opened in the direction corresponding to the heater 13, and a water temperature detector 15 is disposed in the cold water filling chamber 14 corresponding to the flow port 141.

The edge is that the cold water filled in the cold water inlet pipe 11 can be filled in the cold water filling chamber 14 through the cold water filling chamber 14, and then flows into the water storage tank 1 from the flow port 141 for the purpose of continuously supplying heat in the electric water heater. At the same time of water, the water temperature of the cold water which is introduced into the cold water filling chamber 14 is less affected by the temperature of the hot water in the water storage tank 1, so that the water temperature detector 15 therein can be stably measured continuously. The actual temperature of cold water.

Therefore, when the electric water heater is in a stationary state in which the hot water supply is not used, the cold water filling chamber 14 also stops the introduction of the cold water, and the water temperature in the cold water filling chamber 14 and the water temperature in the water storage tank reach an equilibrium state. When the water temperature detector 15 is directly detected, the water temperature in the water storage tank 1 is maintained in the range of the preset hot water 1 and the lower limit water temperature, thereby making the energy saving province comply. Electricity regulations and standards.

Furthermore, when the electric water heater is used and the hot water is continuously supplied, the cold water will also be the same. The continuous replenishment into the cold water filling chamber 14 passes through the inlet water temperature detector 15 in the cold water filling chamber 14, and detects the temperature introduced in the cold water filling chamber 14, if it is always lower than the preset hot water of the electric water heater. At the lower limit temperature, the heater 13 is always kept heating the water in the tub until the hot water stops supplying, and the cold water stops being introduced, the cold water filling chamber 14 is detected by the water temperature detector 15 again. After returning to the upper limit of the hot water temperature, the heater 13 is stopped to be heated, and when the hot water in the water storage tank 1 is actually heated to the upper limit temperature of the hot water, the cold water fills the water temperature in the chamber 14, possibly The preset hot water upper limit temperature has not been reached, so the temperature difference between the two can be obtained through calculation or actual test, so that when the water temperature detector 15 detects the temperature difference, The heater 13 is stopped from heating, so that the hot water in the bucket of the water storage tank 1 also reaches the preset upper limit water temperature value without the problem that the water temperature is too high.

Therefore, as long as the electric water heater is used continuously and the hot water is supplied, the water temperature detector 15 detects that the water temperature in the cold water filling chamber 14 is lower than the lower limit temperature of the hot water. In the condition that the hot water in the water storage tank 1 does not have to wait until the overall temperature drops to the lower limit temperature of the hot water, the heater 13 keeps heating the water in the bucket, and if the temperature of the hot water in the original water storage tank 1 is At the upper limit of the hot water temperature, while the cold water is introduced into the water storage tank 1 and mixed with the hot water, even if the heater 13 is continuously heated, the hot water in the barrel does not exceed the preset upper limit temperature of the hot water. On the contrary, while the hot water is continuously supplied with heat energy, the heater 13 can instantly heat and replenish the heat energy, thereby greatly reducing the heat loss rate of the hot water, so that the electric water heater can be kept for a long time. The supply of hot water can also avoid the need to wait for the water in the barrel to heat up to the normal water supply temperature, so it can provide a more stable and longer supply of hot water.

In addition, referring to FIG. 4, the cold water fills the opening provided in the chamber 14. 141. One or more of the cold water can be directly flowed into the bottom of the side of the water tank 1 without directly rushing to directly mix with the hot water in the upper part of the bucket, and heating The device 13 can directly heat it; or as shown in FIG. 5, the flow port 141 is disposed at the top end of the cold water filling chamber 14, and a conduit 16 is connected to the flow port 141, and the conduit 16 is continuously surrounded. At the periphery of the heater 13, the cold water is guided to the bottom of the water storage tank 1 through the conduit 16, so that the heater 13 can indirectly heat the cold water still in the conduit 16 and then flow into the water storage tank 1 So that the water introduced will not cause excessive temperature drop in the hot water in the barrel, which will make the hot water temperature more stable.

Further, in addition to the duct 16 shown in FIG. 5, a duct 16 surrounding the periphery of the heater 13 is connected, and the flow port 141 provided on the side of the cold water filling chamber 14 shown in FIG. 2 or FIG. 4 may be the same. A conduit (not shown) surrounding the periphery of the heater 13 is connected to the same heating effect.

1‧‧‧Water storage bucket

11‧‧‧ cold water inlet pipe

12‧‧‧ hot water outlet

13‧‧‧heater

14‧‧‧ Cold water filled room

141‧‧‧ drool

15‧‧‧Water temperature detector

Claims (5)

A heating control device for an energy-saving heat storage type electric water heater is a heater in which a hot water upper and lower limit temperature can be preset, and a cold water inlet pipe and a hot water outlet pipe are arranged on the water storage bucket. The improvement is that a cold water filled in the water inlet pipe of the water storage tank is separated by a cold water filled with the introduced water, and the cold water filling chamber is provided with a flow port communicating with the inside of the barrel, and the cold water is made A water temperature detector is installed in the room. The heating control device for the energy-saving heat storage type electric water heater according to claim 1, wherein a conduit surrounding the heater is connected to the flow port. The heating control device for the energy-saving heat storage type electric water heater according to claim 1 or 2, wherein the flow port is opened at a side of the cold water filling chamber. The heating control device for the energy-saving heat storage type electric water heater according to claim 1 or 2, wherein the flow port is opened at the bottom of the side of the cold water filling chamber. The heating control device for the energy-saving heat storage type electric water heater according to claim 1 or 2, wherein the flow port is opened at a top end of the cold water filling chamber.