CN201476255U - Semiconductor thermoelectric water heater with waste heat recovery function - Google Patents

Abstract

The utility model relates to a semiconductor thermoelectric water heater with a waste heat recovery function. The semiconductor thermoelectric water heater comprises a shell, a conduction-type heat exchange cavity group provided with a cold water and waste hot water cavity and arranged in the shell, a heating unit group including a condensing cavity, a heating cavity and a semiconductor thermoelectric module and arranged in the shell, a waste hot water pool, a water pump or sewage pump arranged in the waste heat pool, a spray nozzle, a water pipe and a connecting pipe system. The waste hot water at the high temperature section is utilized firstly for preheating the input cold water to increase the temperature, and then further heating is conducted through the heating unit group, therefore, the consumption of the semiconductor thermoelectric module is greatly reduced, the cost is reduced, and the total thermal efficiency is improved; the heating coefficient can be up to 2.5, the energy can be saved by about 60 percent, and compared with the electric water heater with the same specification in the background technology, the semiconductor thermoelectric water heater can save the consumption of the thermoelectric module by 35 percent to 50 percent; therefore, the semiconductor thermoelectric water heater has the characteristics of simple structure, high waste heat recovery efficiency, high heating efficiency, remarkable energy-saving effect, low production cost and running cost, secure and reliable use and the like.

Description

The semiconductor heat electric heater of band Waste Heat Recovery function

Technical field

The utility model belongs to a kind of bathing electric heater, the particularly a kind of electric heater that can recycle and adopt semiconductor thermoelectric module to heat continue the back to the waste heat that drenches (washing) spent hot water after bathing.

Background technology

The present electric heater that generally adopts, be the heat-storage water heater, or the instantaneous water heater all be directly by resistance class components and parts, directly convert electrical energy into heat energy as electrothermal tube etc. bath water heated; The former grows heat time heating time, heat loss is big and water consumption is limited; And the latter exists power load greatly, often need establish special circuit in addition; And both heaters (pipe) all place water, in case insulating barrier impaired (as the cracking etc.) electric leakage, the incidents of promptly can causing danger.Is CN2558919Y, denomination of invention add semiconductor thermoelectric module for the heat pipe that discloses part of waste heat among a kind of spent hot water of utilization in the patent documentation of " semiconductor heat electric heater " electric heater at above-mentioned disadvantage at notification number.This water heater adopts the heat pipe conduction technique to combine with thermoelectric heatpump, promptly all adopt the semiconductor thermoelectric module heating in bringing-up section, and heat pipe evaporator section is set in waste water box (pond), between the heat absorbing end of two electrothermal modules, establishes condensation segment, utilize spent hot water after the bathing at evaporator section with the working medium carburation by evaporation in the heat pipe, the working substance steam after the vaporization enters emits heat and it is reached the release end of heat be located in the heat exchanger with the heating bath water in the heat pipe condenser section of being close to semiconductor thermoelectric module (chip) heat absorbing end; Reach about 2.0, can save energy 50% and do not have characteristics such as potential safety hazard though this technology has the pyrogenicity coefficient, but owing to partly adopt hot-pipe system, adopt the semiconductor thermoelectric module heating entirely in bringing-up section in waste heat recovery, and existing complex structure, production cost and operating cost higher, lower and its efficient of the waste heat recovery and the thermal efficiency is disadvantages such as reduction with the rising of the heating temperature difference.

Summary of the invention

The purpose of this utility model is the disadvantage that exists at background technology, improve a kind of semiconductor heat electric heater of design with the Waste Heat Recovery function, to reach simple in structure, waste heat recovery and thermal efficiency height, purpose such as production cost and operating cost are low and safe and reliable.

Solution of the present utility model is on basis of background technology, in spent hot water's box (pond), heat pipe evaporator section is set with former, between the heat absorbing end of two electrothermal modules, establish the mode of condensation segment, change into one (dirt) water pump is set in the used heat pond, at first the spent hot water's suction heat exchange chamber in the used heat pond is conducted heat exchange to reclaim the high temperature section heat among the spent hot water, and then the heat pump effect by semiconductor thermoelectric module, from the spent hot water who has lowered the temperature, extract heat energy, be used for further heating bath water, thereby reduced the use amount of semiconductor thermoelectric module in a large number, reduced cost, simultaneously with the increase of heating the temperature difference, the direct heat transfer proportion strengthens, and total pyrogenicity efficient will further improve.Therefore, the utility model comprises housing, be located at the semiconductor thermoelectric module heating unit group in the housing, used heat pond and be located at retracting device in it, shower nozzle and contain cold water inlet pipe, the hot water delivery pipe, spent hot water's delivery pipe is at interior water pipe system, key is also to be provided with between semiconductor thermoelectric module heating unit group in housing and cold water (Xian's water for shower) water inlet pipe one group and adopts the band cold water of conduction heat exchange and the heat exchange chamber group of spent hot water's cavity, the retracting device of being located in the used heat pond is water pump or sewage pump, and the semiconductor thermoelectric module heating unit then contains condensation chamber, heating chamber and be positioned between the two and with both fixing all-in-one-piece semiconductor thermoelectric modules (chip); The water inlet of the cold water cavity in cold water (Xian's water for shower) water inlet pipe and the heat exchange chamber is connected, its delivery port by communicating pipe the water inlet with the next stage cold water cavity be connected, contact successively until the outlet of afterbody cold water cavity, then by be connected communicating pipe with heating chamber water inlet in the first order heating unit, its delivery port is connected with the water inlet of next stage heating chamber, contact successively behind the delivery port of afterbody heating chamber, directly be connected with shower nozzle through the hot water delivery pipe; Used heat water cavity water inlet in the first order heat exchange chamber then is connected to import the spent hot water with water pump or sewage pump in being located at the used heat pond by spent hot water's input pipe, its delivery port was connected with next stage used heat water cavity water inlet by communicating pipe, contact successively behind the delivery port of afterbody used heat water cavity, by communicating pipe the water inlet with afterbody heating unit condensation chamber be connected, its delivery port is connected with the water inlet of previous stage heating unit condensation chamber, contacts successively behind the delivery port of first order heating unit condensation chamber by the discharging of spent hot water's outlet pipe.

The band cold water of above-mentioned employing conduction heat exchange and the heat exchange chamber of spent hot water's cavity, heat exchanger fin wherein is that H type flat board changes the formula heat exchanger fin, heat exchanger fin both sides fin is located at respectively in cold water and the spent hot water's cavity.And described contain condensation chamber, heating chamber and be positioned between the two and with both fixing heating units of all-in-one-piece semiconductor thermoelectric module (chip), wherein the heat exchanging fin in the heat-absorbent surface of semiconductor thermoelectric module and condensation chamber, heat delivery surface and the heating chamber is integral by the heat conductive silica gel tight bond respectively.

The utility model is because before adopting the electrothermal module heating, at first with the mode of carrying out the conduction-type heat exchange in the spent hot water's suction heat exchange chamber in the used heat pond, the spent hot water of high temperature section and the cold water of input (Xian's water for shower) are carried out heat exchange successively to improve its temperature (being preheating input water), then under the heat pump effect of the semiconductor thermoelectric module after the energising, extract heat energy the spent hot water after carrying out heat exchange successively again, further heat bath water, thereby reduced the use amount of semiconductor thermoelectric module in large quantities, reduce cost, improved total thermal efficiency.The utility model pyrogenicity coefficient can reach 2.5, energy-conservation about 60%, compare with same specification background technology electric heater and can save 35～50% electrothermal module.Thereby having simple in structure, waste heat recovery and pyrogenicity efficient height, energy-saving effect is remarkable, and characteristics such as production cost and operating cost is low, safe and reliable.

Description of drawings

Fig. 1 is the utility model structure and each parts annexation schematic diagram;

Fig. 2 is the A-A view;

Fig. 3 is the B-B view.

Among the figure: 1. cold (Xian bathes usefulness) water water inlet pipe, 1～1,2～1: communicating pipe, 1～2. (Xian bathes usefulness) hot water delivery pipe, 2. spent hot water's input pipe, 2～2. spent hot water's outlet pipes, 3. heat exchange chamber, 3～1.H type heat exchanger fin, 3～2. cold water cavities, 3～3. used heat water cavities, 4～1. condensation chambers, 4～2. semiconductor thermoelectric modules (chip), 4～2.1. (condensation) sheet that absorbs heat, 4～2.2. heating plate, 4～3. heating chambers, 5. housing, 6. used heat pond, 6～1. web plates, 7. water pump, 8. shower nozzle.

The specific embodiment:

The electric heater that with the flow is 50 ℃ of 6L/Min, maximum temperaturerise is an example: adopt 2 heat exchange chambers 3 and 4 to contain condensation chamber 4～1, heating chamber 4～3 and semiconductor thermoelectric module (chip) 4～2 at interior heating unit; All kinds of water pipes and communicating pipe 1,1～1,1～2,2,2～1,2～2 are 1/2 o'clock stainless steel tube, heat exchange chamber 3 (long * wide * thick) 650 * 45 * 50mm, H type heat exchanger fin 3～1, each heat exchange chamber are established 12, material is an aluminium sheet, the heat exchanger fin both sides respectively are symmetrical arranged 14 fins, each fin (high * wide * thick) 50 * 20 * 1.5mm is spaced apart 2mm between the fin; It is the semiconductor thermoelectric module (chip) that TEC1-19913, (high * wide * thick) 50 * 50 * 4.0mm, power are 250W, electric current 9A that each heating unit is established 12 models, corresponding with each semiconductor thermoelectric module (chip) 4～2 in condensation chamber 4～1, heating chamber 4～3 (long * wide * thick) 650 * 45 * 54mm, two chambeies aluminium matter heat exchanging fin 4～2.1 and 4～2.2 of 15 (height * wide * thick) 50 * 18 * 1.5mm fins is set, also is integral by the heat conductive silica gel tight bond with the heat-absorbent surface and the heating surface of semiconductor thermoelectric module 4～2 respectively.

Electrothermal module adopts series-parallel connection to connect in the present embodiment, connects with dc source then; Electrothermal module when be operated in maximum current 70%, when maximum temperaturerise is 50 ℃, save 2/5 electrothermal module than same specification background technology; Because it is most effective that electrothermal module is operated in 30% o'clock of maximum current, therefore, when system works during in low temperature rise, low discharge operating mode, direct heat transfer Duan Gengneng satisfies the requirement of abundant heat exchange, meanwhile the input power of electrothermal module pyrogenicity section will reduce, and this moment, the electric heater thermal efficiency can be higher.

Claims (3)

1. semiconductor heat electric heater with the Waste Heat Recovery function, comprise housing, be located at the semiconductor thermoelectric module heating unit group in the housing, used heat pond and be located at retracting device in it, shower nozzle and contain cold water inlet pipe, the hot water delivery pipe, spent hot water's delivery pipe is at interior water pipe system, it is characterized in that also being provided with between semiconductor thermoelectric module heating unit group in housing and the cold water inlet one group and adopt the band cold water of conduction heat exchange and the heat exchange chamber group of spent hot water's cavity, the retracting device of being located in the used heat pond is water pump or sewage pump, and the semiconductor thermoelectric module heating unit then contains condensation chamber, heating chamber and be positioned between the two and with both fixing all-in-one-piece semiconductor thermoelectric modules; The water inlet of the cold water cavity in cold water inlet and the heat exchange chamber is connected, its delivery port by communicating pipe the water inlet with the next stage cold water cavity be connected, contact successively until the outlet of afterbody cold water cavity, then by be connected communicating pipe with heating chamber water inlet in the first order heating unit, its delivery port is connected with the water inlet of next stage heating chamber, contact successively behind the delivery port of afterbody heating chamber, directly be connected with shower nozzle through the hot water delivery pipe; Used heat water cavity water inlet in the first order heat exchange chamber then is connected to import the spent hot water with water pump or sewage pump in being located at the used heat pond by spent hot water's input pipe, its delivery port was connected with next stage used heat water cavity water inlet by communicating pipe, contact successively behind the delivery port of afterbody used heat water cavity, by communicating pipe the water inlet with afterbody heating unit condensation chamber be connected, its delivery port is connected with the water inlet of previous stage heating unit condensation chamber, contacts successively behind the delivery port of first order heating unit condensation chamber by the discharging of spent hot water's outlet pipe.

2. by the semiconductor heat electric heater of the described band Waste Heat Recovery of claim 1 function, it is characterized in that adopting the heat exchanger fin of conduction heat exchange is that H type flat board changes the formula heat exchanger fin, heat exchanger fin both sides fin is located at respectively in cold water and the spent hot water's cavity.

3. press the semiconductor heat electric heater of the described band Waste Heat Recovery of claim 1 function, it is characterized in that described contain condensation chamber, heating chamber and be positioned between the two and with both fixing heating units of all-in-one-piece semiconductor thermoelectric module, wherein the heat exchanging fin in the heat-absorbent surface of semiconductor thermoelectric module and condensation chamber, heat delivery surface and the heating chamber is integral by the heat conductive silica gel tight bond respectively.

Images