CN207113207U - A kind of electric heater of scale removal heat exchange - Google Patents

Abstract

The utility model relates to the field of water heaters, in particular to an electric water heater for descaling and heat exchange, which is provided with a partition plate, which separates the inner tank of the water tank into an electric heating chamber and a water heat exchange chamber connected up and down, and the upper part of the partition board is provided with a The electric heating tube and the temperature sensor A have a heat exchange tube on the lower part, a spray channel on the periphery of the partition plate, a side branch tube on the heat exchange tube, one end of the side branch tube is connected to the spray channel, and an atomization tube is provided on the end cover. The spray port of the atomizer is connected to the other end of the side branch pipe, the liquid inlet of the atomizer is connected to one end of the water inlet pipe through the reversing valve A, and the descaling agent or bactericide is placed in the storage box of the atomizer to be diluted and atomized Spray in the water tank liner along the spray channel, which can effectively descale or sterilize. The water inlet of the heat exchange pipe is connected to the heat source through the reversing valve B. The outlet of the reversing valve B is equipped with a temperature sensor B. Electric water heater heating can be selected. Utilize heat exchange tube heat source replacement or electric heating tube heating, effectively utilize resources, save energy and protect the environment.

Description

An electric water heater for descaling and heat exchange

technical field

The utility model relates to the field of water heaters, in particular to an electric water heater for descaling and heat exchange.

Background technique

Traditional water heaters can only be heated by electricity to provide hot water for domestic use. When there are sufficient heat sources to supply water with heat exchangers, the utilization rate of electric water heaters is not high. Compared with heat exchangers, electric water heaters are not subject to heat supply in use. However, it consumes more power and cannot effectively use the surrounding heat.

Regardless of whether it is an electric water heater or a heat exchanger, bacteria and impurities harmful to the human body may be produced inside the tank after long-term use. In addition, scale will be formed on the inner wall of the tank, the outer wall of the electric heating tube or heat exchange tube, and the outlet pipe, making the electric water heater The heating efficiency is reduced. If the scaling continues to thicken, it will cause poor heat exchange, and even the nozzles of the outlet pipes and other components will be blocked, which will affect the use.

Contents of the invention

The purpose of this utility model is to solve the above problems and provide an electric water heater for descaling and heat exchange, so that the electric water heater can not only be heated by electricity but also can effectively use the surrounding heat energy replacement, and can effectively sterilize and descale the inside of the electric water heater. The structure is simple and the use is convenient.

The technical scheme of the utility model is:

An electric water heater for descaling and heat exchange, comprising an electric water heater shell, an end cover, a water outlet pipe, a water inlet pipe, a sewage outlet, and a water tank liner, with a partition plate, on which through holes are arranged at intervals, and on the partition plate The inner tank of the water tank is equipped with an electric heating tube and a temperature sensor A. The lower part of the inner tank of the water tank under the partition plate is provided with a heat exchange tube coiled into a spiral shape by the heat exchange tube. The partition plate divides the inner tank of the water tank into an electric heating chamber connected up and down. In the water heat exchange chamber, there are connected spray channels on the periphery of the partition plate, and spray holes are arranged on the spray channels at intervals. Outside the cover, there is a side branch pipe on the water inlet of the heat exchange tube. The other end of the side branch pipe is connected, the liquid inlet of the atomizer is connected to one end of the water inlet pipe through the reversing valve A, the storage box is connected to the atomizer, and the water inlet of the heat exchange pipe is connected to the water supply pipe of the heat source through the reversing valve B. The outlet of reversing valve B is provided with a temperature sensor B, and the outlet of the heat exchange tube is connected to the return pipe of the heat supply source.

Further, the reversing valve A, the reversing valve B, the temperature sensor A, the temperature sensor B and the atomizer are respectively electrically connected to the controller.

Further, the descaling agent or bactericide etc. are placed in the storage box of the atomizer, and the descaling agent or bactericide is atomized by the atomizer and sprayed inside the electric water heater along the spray hole on the side branch pipe at the water inlet end of the heat exchange tube. , Effectively descale or sterilize the inner tank of the electric water heater.

Further, the partition plate is a continuous corrugated plate, and through holes are provided on the surface of the corrugated plate, through which the water in the lower layer of the electric water heater enters the upper layer, and the corrugated plate faces the water flow and has a guiding effect.

Further, the diameter of the heat exchange tube is 15mm-35mm, and the thickness of the tube wall is 1.0mm-3.0mm, so as to ensure the overall strength of the heat exchange tube.

Beneficial effects of the utility model: the lower part of the inner tank of the electric water heater is provided with a heat exchange tube, and the heat exchange tube is in a spiral shape, which is beneficial to the rapid heat replacement of the water in the lower layer of the inner tank of the electric water heater, effectively utilizing heat energy, and the upper end of the heat exchange tube There is a partition board, which divides the inner tank of the water tank into an electric heating chamber and a water heat exchange chamber that are connected up and down. The lower layer is first heated and replaced to reduce the heat circulation between the upper and lower layers of the electric water heater. The scale agent or bactericide is mixed with water and atomized by the atomizer and sprayed along the side branch of the heat exchange tube from the spray holes around the partition plate to the inside of the electric water heater, which can effectively descale or sterilize the inner tank components of the electric water heater;

Temperature sensor A, temperature sensor B, reversing valve A and reversing valve B are respectively connected to the controller, temperature sensor A detects the water temperature in the upper layer of the inner tank of the electric water heater in real time and outputs an analog value to the controller, and temperature sensor B detects the reversing direction in real time The water outlet of valve B supplies heat source temperature and outputs analog value to the controller. The controller selects and controls the switch of reversing valve A and reversing valve B according to the temperature analog value, and uses heat exchange tube heat source replacement or electric heating to reach the electric heater Set the temperature, effectively use resources, save energy and protect the environment.

Description of drawings

Fig. 1 is the internal structure schematic diagram of the present utility model;

Fig. 2 is A direction view in Fig. 1;

Fig. 3 is the control connection schematic diagram of the present utility model;

Serial numbers in the picture: 1 electric water heater shell, 2 end cover, 3 water outlet pipe, 4 water inlet pipe, 5 sewage outlet, 6 water tank liner, 7 electric heating pipe, 8 temperature sensor A, 9 heat exchange pipe, 9.1 side branch pipe, 10 Partition plate, 10.1 Through hole, 10.2 Spray channel, 10.3 Spray hole, 11 Atomizer, 11.1 Spray port, 11.2 Liquid inlet, 11.3 Storage box, 12 Reversing valve A, 13 Reversing valve B, 14 Temperature sensor B, 15 heat source water supply pipes, 16 heat source return water pipes, 17 controllers.

Detailed ways

An electric water heater for descaling and heat exchange, comprising an electric water heater shell 1, end caps 2 at both ends of the shell, a water outlet pipe 3, a water inlet pipe 4, a sewage outlet 5, and a water tank liner 6, with a partition plate 10, and a partition plate 10 is provided with through holes 10.1 at intervals, and the water tank liner 6 on the partition plate 10 is provided with an electric heating tube 7 and a temperature sensor A8, and the water tank liner 6 bottom under the partition plate 10 is provided with a heat exchange tube 9, which can adjust the temperature of the water tank liner. The lower part of 6 performs heat replacement. If the heat supply source is stable, the water temperature in the lower layer of the water tank liner 6 first rises to the set temperature of the electric water heater, then the hot water in the lower layer will flow to the upper layer of the water tank inner liner 6, and the heat exchange between the upper and lower layers is gradually carried out, effectively Using heat energy, the heat exchange tubes 9 are distributed in a spiral shape, which is more conducive to heating the water within the range of the heat exchange tubes 9 at the lower part of the water tank liner 6. The diameter of the heat exchange tubes 9 is 15mm-35mm, and the thickness of the tube wall is 1.0mm. —3.0mm, to ensure the overall strength of the heat exchange tube 9. The spacer plate 10 separates the water tank liner 6 into an electric heating chamber and a water heat exchange chamber connected up and down. The lower layer is firstly heated and replaced to reduce the heat flow between the upper and lower layers of the electric water heater. Interconnected spray channels 10.2 are provided on the periphery of the spacer plate 10, and spray holes 10.3 are arranged at intervals on the spray channel 10.2. The two ends of the heat exchange tube 9 are the water inlet end and the water outlet end respectively. The water outlet end passes through the water tank liner 6 and the end cover 2 to extend to the outside of the end cover 2, and the outer wall of the water inlet of the heat exchange tube 9 is provided with a side branch pipe 9.1, and one end of the side branch pipe 9.1 connects with the spray channel 10.2 on the partition plate 10 The end cap 2 at the water inlet end of the heat exchange tube 9 is provided with an atomizer 11, the spray port 11.1 of the atomizer is connected to the other end of the side branch pipe 9.1, and the liquid inlet 11.2 of the atomizer is connected to the inlet through the reversing valve A12. One end of the water pipe 4 is connected, the atomizer 11 is connected to the storage box 11.3, and the descaling agent or bactericide etc. are placed in the storage box 11.3, and the descaling agent or bactericide can effectively descale or sterilize the water tank liner 6 of the electric water heater Disinfection, scale or impurities are discharged from the electric water heater through the sewage outlet 5;

The water inlet end of the heat exchange tube 9 is connected to the water outlet of the reversing valve B13, and the water outlet of the reversing valve B13 is provided with a temperature sensor B. The heat supply return pipe 16, temperature sensor A8, temperature sensor B, reversing valve A12, reversing valve B13, and atomizer are respectively electrically connected to the controller 17, and the controller 17 selects and controls the reversing valve A12 according to the temperature analog value , Switching of the reversing valve B13, using the heat exchange tube 9 to replace the heat source or the electric heating tube 7 to heat up to the set temperature of the electric heater, effectively utilizing resources, energy saving and environmental protection.

When there is no heat source supply, the electric water heater directly uses the electric heating tube 7 to heat and provide domestic hot water. When there is sufficient heat source supply, the electric water heater preferentially uses the heat exchange tube 9 to replace the heat source according to the set temperature, so as to achieve the purpose of energy saving.

The temperature sensor B14 connected to the water outlet of the reversing valve B13 detects the temperature value of the heat supply pipe 15 at the outlet of the heat exchange tube 9 in real time and outputs an analog signal to the controller 17. The initial state of the switch of the reversing valve B13 is open;

When the heating temperature of the heat supply source is greater than or equal to the set temperature of the electric water heater, keep the reversing valve B13 open, heat the water in the water tank liner 6 through the heat exchange tube 9, and the temperature sensor A8 detects the water temperature of the water tank liner 6 in real time and outputs The analog signal is sent to the controller 17. When the water temperature in the tank 6 of the electric water heater reaches the set temperature of the electric water heater, the controller 17 controls the reversing valve B13 to close, and the heat supply pipe 15 stops outputting;

When the heating temperature of the heat supply source is lower than the set temperature of the electric water heater, keep the reversing valve B13 open and heat through the heat exchange tube 9 first. The controller 17 controls the reversing valve B13 to close, and stops the output of the heat source. The controller 17 controls to turn on the electric heating tube 7 for electric heating at the same time, until the water temperature in the inner tank 6 of the electric water heater reaches the set temperature, and the electric heating stops. The analog value controls the switch of the reversing valve B13, and the electric heater can choose to use the heat exchange tube 9 to replace the heat source or the electric heating tube 7 to heat, effectively utilizing resources, energy saving and environmental protection, and easy to use.

When descaling or sterilizing the inside of the water tank liner 6 of the electric water heater, the reversing valve A12 and the switch of the atomizer 11 are controlled by the controller 17, and the water in the water inlet pipe 4 enters the storage box 11.3, and the storage box The descaling agent or bactericide placed in 11.3 is diluted and atomized, and sprayed from the atomizer spray port 11.1 along the side branch pipe 9.1 of the heat exchange tube and the spray hole 9.2 on the spray channel 10.2 on the partition plate 10 to the water tank of the electric water heater Around the liner 6, the structural components in the water tank liner 6 of the electric water heater can be effectively descaled or sterilized, and the descaling or sterilized effect will be better when the water tank liner does not store water.

Claims (5)

1. a kind of electric heater of scale removal heat exchange, including electric water heater shell, end cap, outlet pipe, water inlet pipe, sewage draining exit, water tank Inner bag, it is characterised in that：Provided with space bar, through hole is interval with space bar, the inner water tank on space bar is provided with electrothermal tube And temperature sensor A, the inner water tank bottom under space bar are provided with the heat exchanger tube by heat exchange pipe dish curl, space bar is water Case inner bag is partitioned into the electric heating chamber being connected up and down and water heat exchanging chamber, and space bar periphery is provided with the spray channel being connected, Compartment of terrain is provided with spray holes in spray channel, and heat exchanger tube inlet end, water outlet end are each passed through inner water tank and end cap extension To outside end cap, heat exchanger tube water inlet is provided with side branch, and side branch one end is connected with the spray channel on space bar, heat exchanger tube The end cap of inlet end is provided with atomizer, and atomizer spray mouth is connected with the side branch other end, and atomizer inlet is through commutation Valve A is connected with water inlet pipe one end, connects parcel tray on atomizer, heat exchanger tube water inlet through reversal valve B connection supplying heat source feed pipes, Reversal valve B delivery ports are provided with temperature sensor B, heat exchanger tube delivery port connection supplying heat source return pipe.

A kind of 2. electric heater of scale removal heat exchange according to claim 1, it is characterised in that：Reversal valve A, reversal valve B, temperature Degree sensors A, temperature sensor B and atomizer are electrically connected with the controller respectively.

A kind of 3. electric heater of scale removal heat exchange according to claim 1, it is characterised in that：Placed in atomizer parcel tray Scale remover or bactericide etc..

A kind of 4. electric heater of scale removal heat exchange according to claim 1, it is characterised in that：Space bar is continuous ripple Plate, ripple plate face are provided with through hole.

A kind of 5. electric heater of scale removal heat exchange according to claim 1, it is characterised in that：Heat exchange tube diameter 15mm- 35mm, pipe thickness 1.0mm -3.0mm.