CN210050983U

CN210050983U - Pre-mixing type electric water heater

Info

Publication number: CN210050983U
Application number: CN201920571454.2U
Authority: CN
Inventors: 王焱
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-02-11
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a mix electric water heater promptly in advance, including the casing, install inner bag, pipeline thermostatic valve, instant heating heater and controlling means in the casing, be connected with cold water pipeline and hot water pipeline on the inner bag, install preheating-type heater and hot water temperature sensor in the inner bag, be connected with cold water branch pipe on the cold water pipeline, pipeline thermostatic valve and hot water pipeline, cold water branch pipe and outlet conduit intercommunication, instant heating heater installs on outlet conduit, and the casing is placed on the ground, is connected with the water pump on cold water pipeline or the outlet conduit. This mix formula electric water heater in advance sets up the water pump in the casing, can carry out the pressure boost to the cold water in the hot water pipeline before the water and make it get back to the inner bag in, avoids water waste.

Description

Pre-mixing type electric water heater

Technical Field

The utility model relates to an electric water heater, in particular to a mix formula electric water heater in advance promptly.

Background

The electric water heater is a common household appliance, can heat water and provide hot water for washing. The electric water heater comprises an instant heating type water heater and a preheating type water heater, the instant heating type water heater can heat water flowing through the instant heating type water heater in real time when water is used, the power is high, the current is large, on one hand, the requirement on a power supply line is high, on the other hand, due to power limitation, the temperature rise which can be improved for water with a certain flow rate in unit time is limited, and particularly in winter, due to the fact that the temperature of tap water is low, the water can still not meet the temperature requirement of the water after being heated by the instant heating type. The preheating electric water heater has lower heating power than the instant heating water heater, but needs to heat the water in the liner before use, which needs to consume longer time, and meanwhile, the liner dissipates heat outwards during heat preservation, which leads to heat waste, and the larger the temperature difference between the liner and the room temperature is, the faster the heat loss is.

Chinese patent No. 200610035467.5 discloses an electric water heater, which comprises an inner container, a preheating heater is arranged in the inner container, and a hot water outlet of the inner container is sequentially connected with a thermostatic pipe valve, an instant heater and a thermostatic valve with adjustable flow. When the water heater is used, water in the inner container is heated by the preheating heater, the constant-temperature pipeline valve can mix the water in the inner container with cold water to a certain temperature, and the mixed water is sent into the instant heater for secondary heating. The instant heater is opened immediately, and the heated water is not wasted. However, before the water heater is used, a large amount of cold water exists in a hot water conveying pipeline connected with a hot water interface of a water tap, so that the cold water in the section needs to be discharged before the water heater is used, and waste of water resources is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a mix electric water heater promptly in advance sets up the water pump in the casing, can carry out the pressure boost to the cold water in the hot water pipeline before the water and make it get back to the inner bag in, avoids the water waste.

The above technical purpose of the present invention can be achieved by the following technical solutions: a pre-mixing type electric water heater comprises a shell, wherein an inner container, a pipeline thermostatic valve, an instant heating heater and a control device are arranged in the shell, a cold water pipeline and a hot water pipeline are connected onto the inner container, a pre-heating type heater and a hot water temperature sensor are arranged in the inner container, a cold water branch pipe is connected onto the cold water pipeline, the pipeline thermostatic valve is communicated with the hot water pipeline, the cold water branch pipe and a water outlet pipeline, the instant heating heater is arranged on the water outlet pipeline, the shell is placed on the ground, and a water pump is connected onto the cold water pipeline or the water outlet.

Through the technical scheme, terminal check valve and the cold water pipe connection of passing through of hot water conveying pipe when arranging the water pipeline, start the water pump earlier before the bathing, carry out the pressure boost to the water in the inner bag, make the water pressure in the inner bag be greater than the water pressure in the cold water pipeline, thereby make low warm water in the hot water conveying pipe can flow in the inner bag again through the check valve, realize the purpose with the low warm water in the hot water conveying pipe of hot water replacement in the inner bag, thereby avoid the interior outflow cold water of hot water conveying pipe, realize zero cold water function.

The setting of water pump can also carry out the pressure boost to the pressure of intaking of cold water for cold water inflow is more stable, avoids leading to from the hot heater outflow water temperature too high promptly because cold water inflow sudden change, causes the scald accident. The shell is placed on the ground, and does not need to be hung on a wall when in use, so that the installation is convenient and safe, and meanwhile, larger water storage capacity can be set, thereby improving the hot water supply time.

Preferably, the number of the inner containers is at least two, the inner containers are sequentially communicated, the inner container at the head end is connected with a cold water pipeline, and the inner container at the tail end is connected with a hot water pipeline.

Through above-mentioned technical scheme, cold water enters into and need flow through head end inner bag and middle inner bag in proper order behind the inner bag, just can follow terminal inner bag at last and flow out, can reduce the stagnant water district for rivers in the inner bag are more regular, can have abundant time and preheating-type heater contact, heating after cold water gets into the inner bag. Simultaneously, compared with a single inner container, cold water entering the inner container can flow out of the tail end inner container only through the inner containers, so that hot water in the inner container can flow out as far as possible, and the utilization rate of the hot water is improved.

Preferably, the inner container is provided with a water inlet and a water outlet, the water inlet and the water outlet are arranged diagonally, and the water inlet of the next inner container is connected with the water outlet of the previous inner container through a communicating pipeline; or the two adjacent inner containers are communicated through at least two communicating pipelines.

Through the technical scheme, the water inlet and the water outlet are arranged diagonally, so that water flows more regularly in the inner container, and the heated water can flow out as much as possible.

Or two adjacent inner containers are communicated through at least two communicating pipes, circulation can be formed between the two inner containers, water flow in the two adjacent inner containers can flow conveniently, and stagnant water areas which do not flow in the inner containers are reduced.

Preferably, the preheating heater is installed in the head end inner container.

Through the technical scheme, a better heating effect can be obtained when only one preheating type heater is used, the inner container at the head end is directly connected with the cold water pipeline, and the temperature of the water in the inner container at the head end is lower than that of the inner container at the tail end, so that the heat transfer efficiency between the preheating type heater and the water is higher. Correspondingly, the hot water quantity in the inner container can also be increased.

Preferably, an electronic magnesium rod is installed in the inner container.

Through above-mentioned technical scheme, electron magnesium stick is longer for the life of ordinary magnesium stick, need not to change the magnesium stick in the water heater use, and it is more convenient to use.

Preferably, a cold water temperature sensor is arranged at a water inlet of the cold water pipeline or the inner container at the head end.

Through above-mentioned technical scheme, cold water temperature sensor can detect the cold water temperature to the heating temperature in the control inner bag. When the summer temperature is higher, the temperature in the cold water pipeline is also higher, can reduce the heating temperature in the inner bag, when cold water temperature is higher than the uniform temperature, can not use the preheating-type heater even, singly use instant heating heater to heat water to avoid because the heat loss that the outside heat dissipation leads to in the hot water storage process. When the water temperature in the cold water pipeline in autumn and winter is lower, the preheating heater in the liner heats the water temperature entering the liner firstly to enable the water temperature to reach the heat preservation temperature, then the preliminarily heated hot water and the cold water are mixed through the pipeline thermostatic valve to form mixed water, the temperature of the mixed water is higher than that of the cold water but lower than the set outlet water temperature, and then the mixed water is reheated through the instant heating heater to enable the mixed water to flow out after the temperature of the mixed water reaches the set temperature. The quick heating capacity of the instant heating type heater can be fully utilized, on one hand, the heat preservation temperature in the inner container is reduced, heat loss during storage is reduced, on the other hand, water in the inner container is heated, the hot water supply capacity is improved, and longer bathing time is guaranteed in a cold day. In addition, different inner container heat preservation temperatures can be set according to the cold water temperature detected by the cold water temperature sensor, and further the phenomenon that hot water in the inner container is stored for a long time due to overhigh water temperature in the inner container, and a large amount of heat is lost is avoided.

Preferably, a flow sensor is arranged on the cold water pipeline, the hot water pipeline or the water outlet pipeline.

Through the technical scheme, the flow sensor can judge the use state of the electric water heater. When the water flow detected by the flow sensor is larger than the starting flow, the instant heating type heater works, and the preheating type heater does not work. When the water flow detected by the flow sensor is smaller than the starting flow, the instant heating type heater does not work, and the preheating type heater heats the water temperature in the inner container to the heat preservation temperature. Meanwhile, the control device sets a certain time (generally set to be 20-40 minutes), and when the starting flow is not detected after the time, the preheating type heater stops heating until the flow sensor detects the starting flow again.

Preferably, the flow meter further comprises a timer, the timer is electrically connected with the control device, and the timer records the time when the flow sensor detects the starting flow.

Through the technical scheme, intelligent control can be realized, and as the work and rest time of a person is regular under the general condition, after the timer records the use time of the previous day, the preheating type heater is started at the time point of the next day or a time point before the time, so that the water in the inner container is heated in advance, and the user can use the water without waiting when the user wants to take a bath. The timer can record a plurality of groups of data, thereby being suitable for the use of a plurality of users.

Preferably, the pipeline thermostatic valve further comprises a control panel and a display screen, and the pipeline thermostatic valve is electrically connected with the control device.

Through the technical scheme, control panel's setting can be set for the leaving water temperature comparatively conveniently, the display screen can be to leaving water temperature, information such as inner bag temperature shows, the pipeline thermostatic valve has electric control function and is connected with controlling means electricity, controlling means can control driving pieces such as the motor in the pipeline thermostatic valve, the leaving water temperature through motor regulation thermostatic cartridge, thereby make controlling means can adjust the leaving water temperature of pipeline thermostatic valve according to the discharge that flow sensor detected, make the temperature value that the mixed water process after the heating of instant heating sensor accords with the temperature value of settlement.

Preferably, the bottom of the inner container is provided with a sewage draining outlet.

Through the technical scheme, the arrangement of the drain outlet can conveniently remove sediments at the bottom of the inner container, so that the cleanness of water in the inner container is ensured.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the water pump, can increase water outlet pressure for the low-temperature water in the hot water pipeline can be replaced to the hot water in the inner bag, realizes zero cold water function. Meanwhile, in the bathing process, the water pump can also pressurize the cold water inlet water and stabilize the flow, so that the unstable outlet water temperature of the water outlet pipeline in the bathing process caused by the flow change is avoided. In addition, the shell is placed on the ground, so that the installation is convenient, the use is safer, and meanwhile, the volume of the inner container can be larger, so that the water storage capacity is improved.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic view of a pipeline connection according to the first embodiment;

fig. 3 is a schematic structural diagram of the second embodiment.

Reference numerals: 1. a housing; 2. an inner container; 3. an instantaneous heater; 4. a control device; 5. a pipeline thermostatic valve; 6. a preheating-type heater; 7. a hot water temperature sensor; 8. a cold water branch pipe; 9. a cold water pipe; 10. a hot water pipe; 11. a water outlet pipeline; 12. a water pump; 13. a head end inner container; 14. a tail end inner container; 15. a communicating pipe; 16. an electronic magnesium rod; 17. a cold water temperature sensor; 18. a flow sensor; 19. a control panel; 20. a display screen; 21. a sewage draining outlet; 22. a water inlet; 23. a water outlet; 24. a one-way valve; 25. a hot water delivery pipe; 26. a faucet; 27. and (3) a support leg.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Embodiment one, a pre-mixing type electric water heater

As shown in fig. 1, the electric water heater of the pre-mixing type comprises a housing 1, and feet 27 are arranged at the bottom of the housing 1 for raising the distance between the housing 1 and the ground. An inner container 2 for storing water, a pipeline thermostatic valve 5, a heating heater 3 and a control device 4 are arranged in the shell 1. The lower part of the inner container 2 is connected with a cold water pipeline 9, the upper part of the inner container 2 is connected with a hot water pipeline 10, and cold water enters the inner container 2 from the cold water pipeline 9 and then flows out of the inner container 2 from the hot water pipeline 10. The hot water inlet of the pipeline thermostatic valve 5 is connected with a hot water pipeline 10, the cold water inlet is connected with a cold water pipeline 9 through a cold water branch pipe 8, the mixed water outlet of the pipeline thermostatic valve 5 is connected with a water outlet pipeline 11, and the instant heating type heater 3 is arranged on the water outlet pipeline and heats water flowing through the water outlet pipeline 11. Install water pump 12 on outlet conduit 11 or the cold water pipeline 9, water pump 12 can carry out the pressure boost to rivers, stabilizes the pipeline flow simultaneously, and water pump 12 is installed on cold water pipeline 9 in this embodiment, and cold water branch pipe 8 is located between water pump 12 and the water inlet 22 of inner bag 2. A preheating heater 6 and a hot water temperature sensor 7 are arranged in the inner container 2, and the preheating heater 6 and the hot water temperature sensor 7 are electrically connected with the control device 4. The control device 4 controls the preheating heater 6 to heat or stop heating according to the water temperature in the inner container 2.

The number of inner bags 2 is at least two, and a plurality of inner bags 2 are communicated in sequence, wherein the inner bag 13 at the head end is connected with the cold water pipeline 9, and the inner bag 14 at the tail end is connected with the hot water pipeline 10. The water in the cold water pipeline 9 firstly enters the inner container 13 at the head end, then sequentially passes through the middle inner container, finally enters the inner container 14 at the tail end, and then enters the pipeline thermostatic valve 5 through the hot water pipeline 10. The hot water is mixed with the cold water in the cold water branch pipe 8 in the pipeline thermostatic valve 5, flows out of the pipeline thermostatic valve 5, enters the instant heater 3 for secondary heating, and the water after secondary heating by the instant heater 3 flows into the hot water conveying pipeline 25 through the water outlet pipeline 11 and enters the hot water interface of the water faucet 26 through the hot water conveying pipeline 25. The tail end of the hot water conveying pipeline 25 is communicated with the cold water pipeline 9 through a one-way valve 24. When bathing is to be started, the water pump 12 is firstly started, so that the water pump 12 pressurizes the water flow in the cold water pipeline 9, the water pressure in the inner container 2 and the hot water conveying pipeline 25 is larger than the cold water pressure, and the water in the hot water conveying pipeline 25 can enter the cold water pipeline 9 through the one-way valve 24. In the process, the original low-temperature water in the hot water conveying pipeline 25 is replaced by the hot water heated by the instant heater 3, so that the phenomenon that cold water flows out when the water faucet 26 is opened is avoided, and the function of zero cold water is realized.

The inner containers 2 are two in the embodiment, the two inner containers 2 are longitudinally arranged, and the two inner containers 2 are communicated through two communicating pipelines 15. Two communicating pipes 15 are provided respectively at the upper and lower portions of the inner container 2. Two communicating pipes 15 are used for connection, so that water flow can be smoother, and circulation can be formed between the two inner containers 2, so that a large dead water area is prevented from being formed in the tail end inner container 14, and hot water in the dead water area can not flow out of the inner containers 2 all the time, and the utilization rate of the hot water is influenced. Meanwhile, only the preheating type heater 6 is arranged in the inner container 13 at the head end of the two inner containers 2, so that the number of the preheating type heaters 6 can be reduced, the production cost is saved, and meanwhile, due to the arrangement of the two communicating pipelines 15, in the process of heating water flow in the inner containers 2, the water flow can generate circulation, so that the same heating effect as that of the two preheating type heaters 6 can be obtained. Meanwhile, an electronic magnesium rod 16 is also arranged in the inner container 2 and used for preventing the inner container 2 and the preheating type heater 6 from being corroded.

A cold water temperature sensor 17 is arranged at the water inlet 22 of the cold water pipeline 9 or the head end inner container 13. The cold water temperature sensor 17 can detect the temperature of the water in the cold water pipe 9, so that the heating temperature in the inner container 2 can be determined according to the detected cold water temperature. The control device 4 stores corresponding heating temperature values corresponding to different cold water temperatures in advance. When the cold water temperature is lower in winter, the control device 4 heats the inner container 2 according to a higher temperature value, and when the cold water temperature is higher in summer, the control device selects a lower temperature value to heat the inner container 2. Therefore, on the premise of ensuring the hot water supply capacity of the water heater, the heat loss and waste of hot water in the storage process caused by a large amount of hot water in the inner container after the water heater is used are avoided.

When the water heater is used, the switch is turned on first, the control device 4 determines the working state of the water heater according to the flow value detected by the flow sensor 18, and determines the heating temperature of the inner container 2 according to the cold water temperature detected by the cold water temperature sensor 17. When the detected flow value is smaller than the starting flow, namely the heating heater 3 does not work, the preheating type heater works to heat the water in the inner container 2, so that the water in the inner container 2 is heated to the set temperature and is maintained at the set temperature. When the water flow detected by the flow sensor 18 is larger than the starting flow, the preheating heater 6 does not work, that is, the heating heater 3 works, and the water mixed by the pipeline thermostatic valve 5 is heated for the second time. After the switch of the electric water heater is turned on, if the flow sensor 18 does not detect the starting flow for a period of time, the electric water heater is automatically turned off, and the preheating type heater 6 and the instant heating type heater do not work. Correspondingly, when the water heater is in a closed state, if the flow sensor 18 detects the starting flow, the electric water heater is automatically started, the instant heating type heater 3 immediately starts to work to heat water, and after the water flow is closed, the instant heating type heater 3 stops heating and is switched to the preheating type heater 6 to heat and preserve heat for a period of time.

In addition, a timer is installed in the housing 1 and electrically connected with the control device 4, and the timer can record the time when the flow sensor 18 detects the starting flow, so that the water in the inner container 2 can be preheated in advance according to the use habits of users. For example, when the user takes a bath with the water heater at 17:00 in the current day, the control device 4 starts the preheating heater 6 to heat the water in the inner container 2 in advance before the bath time (for example, 16: 30) by the next day, so that the user can take a bath at 17:00 without waiting.

A display 20 and a control panel 19 are further installed on the surface of the housing 1, and the display 20 can display the set outlet water temperature, the water temperature of the inner container 2, and the like. The control panel 19 can set the outlet water temperature. The pipeline thermostatic valve 5 is electrically connected with the control device 4, and when the water flow detected by the flow sensor 18 changes, the control device 4 controls the driving motor of the pipeline thermostatic valve 5 to rotate, so that the outlet water temperature of the pipeline thermostatic valve 5 is changed. For example, when the water output of the water heater is reduced, the water output temperature of the pipe thermostatic valve 5 is reduced; when the water outlet quantity of the water heater is increased, the water outlet temperature of the pipeline thermostatic valve 5 is increased, so that the heating power of the instant heater 3 can be fully utilized.

The bottom of the inner container 2 is provided with a drain outlet 21 for discharging the sediment at the bottom of the inner container 2, thereby improving the cleaning degree inside the inner container 2. The shell 1 is correspondingly provided with a through hole communicated with the outside for discharging water of the sewage discharge outlet 21 out of the shell 1.

When in use, the water heater can be placed on a balcony or other places without being hung on a wall. Meanwhile, the water heater can also be used as a hot water supply center and used for driving heating equipment such as floor heating and the like to operate.

Second embodiment, a pre-mixing type electric water heater

As shown in fig. 3, the difference between the second embodiment and the first embodiment is that the water inlet 22 and the water outlet 23 of the inner container 2 in the second embodiment are arranged diagonally, that is, the cold water inlet 22 is arranged at the lower right of the inner container 2, the water outlet 23 is arranged at the upper left of the inner container 2, and the two inner containers 2 are connected through a communication pipe 15, so that water flow can sequentially flow through the inner containers 2. Meanwhile, a preheating type heater 6 is also installed in the tail end inner container 14, when the switch of the electric water heater is turned on, and meanwhile, the flow sensor 18 does not detect the starting flow, the preheating type heater 6 in the head end inner container 13 is started firstly to heat the water in the head end inner container 13, when the water in the head end inner container 13 is heated to a preset temperature, the preheating type heater in the tail end inner container 14 adjacent to the head end inner container is switched to be heated, and when the water temperature in the tail end inner container 14 reaches the preset temperature, the preheating type heater 6 in the inner container 2 also stops heating.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a mix formula electric water heater in advance, which comprises a housin (1), install inner bag (2) in casing (1), pipeline thermostatic valve (5) and instant heating ware (3), controlling means (4), be connected with cold water pipeline (9) and hot water pipeline (10) on inner bag (2), install preheating-type heater (6) and hot water temperature sensor (7) in inner bag (2), be connected with cold water branch pipe (8) on cold water pipeline (9), pipeline thermostatic valve (5) and hot water pipeline (10), cold water branch pipe (8) and outlet conduit (11) intercommunication, instant heating ware (3) are installed on outlet conduit (11), characterized by: the shell (1) is placed on the ground, and the cold water pipeline (9) or the water outlet pipeline (11) is connected with a water pump (12).

2. The pre-mix electric water heater as recited in claim 1, wherein: the number of the inner containers (2) is at least two, the inner containers (2) are sequentially communicated, the inner container (13) at the head end is connected with the cold water pipeline (9), and the inner container (14) at the tail end is connected with the hot water pipeline (10).

3. The pre-mix electric water heater as recited in claim 2, wherein: the inner container (2) is provided with a water inlet (22) and a water outlet (23), the water inlet (22) and the water outlet (23) are arranged diagonally, and the water inlet (22) of the next inner container (2) is connected with the water outlet (23) of the previous inner container (2) through a communicating pipeline (15); or the two adjacent inner containers (2) are communicated through at least two communication pipelines (15).

4. The pre-mix electric water heater as recited in claim 3, wherein: the preheating type heater (6) is arranged in the head end inner container (13).

5. The pre-mix electric water heater as recited in claim 1, wherein: an electronic magnesium rod (16) is arranged in the inner container (2).

6. The pre-mix electric water heater as recited in claim 1, wherein: a cold water temperature sensor (17) is arranged at the water inlet (22) of the cold water pipeline (9) or the head end inner container (13).

7. The pre-mix electric water heater as recited in claim 1, wherein: and flow sensors (18) are arranged on the cold water pipeline (9), the hot water pipeline (10) or the water outlet pipeline (11).

8. The pre-mix electric water heater as recited in claim 1, wherein: the flow sensor also comprises a timer, wherein the timer is electrically connected with the control device (4), and the timer records the time when the flow sensor (18) detects the starting flow.

9. The pre-mix electric water heater as recited in claim 1, wherein: the pipeline thermostatic valve further comprises a control panel (19) and a display screen (20), and the pipeline thermostatic valve (5) is electrically connected with the control device (4).

10. The pre-mix electric water heater as recited in claim 1, wherein: a sewage draining outlet (21) is arranged at the bottom of the inner container (2).