CN103615804B

CN103615804B - A kind of degree of depth reclaims the method and system of the Small Washing such as domestic or hotel guest room outdoor bathing place institute bath sewage used heat

Info

Publication number: CN103615804B
Application number: CN201310596262.4A
Authority: CN
Inventors: 洪莲
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-21
Filing date: 2013-11-21
Publication date: 2016-07-27
Anticipated expiration: 2033-11-21
Also published as: CN103615804A

Abstract

The individual Small Washing outdoor bathing place institute such as domestic and hotel bath hot water temperature is at about 40 DEG C, after spray human body, temperature is the highest, about at 35 DEG C about 37 DEG C, current situation is that the hot water that these temperature are higher is all immediately discharged to sewer, causes great heat waste.For this situation in the individual Small Washing outdoor bathing place such as domestic and hotel, the present invention proposes one and first passes through and tap water direct heat transfer, the twin-stage heat recovery system reclaimed by the heat pump degree of depth again, it is made up of " integrated water tank " and " integrated bath platform " two parts, by complicated system compact, simplify, be allowed to take up room little, can be arranged in well in all kinds of independent bathroom, effectively solve domestic or the problem of hotel's sanitary and balneal room deficiency.This integration mode not only contributes to the industrialization of product, is more beneficial for the mounting, commissioning and maintenance of product, and has the aesthetic needed for domestic.

Description

A kind of degree of depth reclaims the Small Washing such as domestic or hotel guest room outdoor bathing place institute The method and system of bath sewage used heat

Technical field

The invention belongs to energy technology field, relate to a kind of reclaiming the Small Washing such as domestic, hotel guest room outdoor bathing place The method and system of institute's bath sewage used heat, are specifically related to one and utilize heat exchanger and the heat pump twin-stage degree of depth to return The method receiving bath sewage used heat, the invention still further relates to the system using the method to reclaim bath sewage used heat.

Background technology

The bath hot water of pot-type boiler is at about 40 DEG C, and after spray human body, temperature is the highest, about At 35 DEG C about-37 DEG C, current situation is that the hot water that these temperature are higher is all immediately discharged to sewer, On the one hand the significant wastage of the energy is caused, on the other hand along with the further rise of electric & gas price, The bath water power consumption of resident or gas consumption expenditure increase further, therefore more and more nervous at current energy source, In the case of Civil Energy Consumption cost is more and more higher, if can effectively by this partial heat recycle and reuse, The most either to saving the energy, saving the electricity charge, or environmental conservation all makes great sense.

At present, the more existing patent utilizing heat pump that bath sewage Waste Heat Recovery is utilized and products, i.e. profit With heat pump principle, using the bath sewage discharged as low temperature cold source, extract heat therein and tap water is entered Row heating, it is achieved the recovery of heat in bath sewage.But method disclosed in these more or less also exists respectively The problem of kind, and the Small Washing outdoor bathing place institute such as inapplicable domestic or hotel guest room, specifically include:

(1) simple heat exchanger heat exchange is used, some pick up the heat of the carrying out of simple low degree, The profound recovery of heat cannot be realized, still have a large amount of tow taste heat to drain along with sewage, as China is special Profit " energy-and water-saving shower base (People's Republic of China (PRC), the patent No.: ZL200520078458.5) ", " bathroom special-purpose water heater (People's Republic of China (PRC), the patent No.: ZL200610104570.0) ", " one Kind for bath wastewater heat energy exchange recovery device (People's Republic of China (PRC), application number: 201010162747.9) ", " waste water heat recovering equipment and water heater (People's Republic of China (PRC), application Number: 201020672452.1) ", " shower house (People's Republic of China (PRC), the Shen of bath wastewater heat recovery Please number: 201120034601.6) ".

(2) heat pump is directly used to extract the single-stage recuperation of heat mode of heat, and the most first with low-grade Tap water heat exchange so that organic efficiency is greatly lowered, reclaiming cost increases, such as Chinese patent " bathing Waste water residual heat recycling device (People's Republic of China (PRC), application number: 200610044652.0) ", " time Receive water for bathing waste heat carbon dioxide heat pump water heater (People's Republic of China (PRC), application number: 201010564629.0) " " waste heat back-heating type immediate heating type Teat pump boiler (People's Republic of China (PRC), application Number: 200920141101.5) ", " (the China people are altogether for the air source hot pump water heater of band waste heat recovery plant And state, the patent No.: ZL200620024573.9) ".

(3) system or set up multiple water tank separately, it is impossible to miniaturization, or need to build waste water of bath collecting pit, Install comparatively laborious, be not suitable for area little and fitted up the bathroom of sizing, it is impossible to be applied to domestic and wine The individual bathing place such as customer room.Application scenario is different, and the requirement to technological invention is the most entirely different, mesh Before more existing patents can only apply the recovery of large-scale bathing occasion bath sewage used heat, as bathhouse, Natatoriums etc., large-scale bathhouse is with domestic, such as Chinese patent, " a kind of bath wastewater two levels of thermal is returned Receiving apparatus (People's Republic of China (PRC), application number: 201210366509.9) ", " a kind of common plunge bath waste heat Reclaim heat pump bath devices (People's Republic of China (PRC), patent No. ZL200610112860.X) ", " a kind of two Level waste-water heat-energy recovery device, application number: 201020645625.0 ".

There is the biggest difference the bathing feature of hotel guest room and application scenario, including:

1) Takd A Bath The Space that the Small Washing such as domestic and hotel guest room outdoor bathing place is closed is limited, real in limited space The degree of depth of existing bath sewage used heat reclaims, and structure and process requirements to system are higher；

2) bathing that the Small Washing such as domestic and hotel guest room outdoor bathing place is closed is relatively decentralized, and bathing time randomness is relatively By force, bath sewage amount is less, and bathing gap periods is longer, be different from large-scale bathhouse the bathing time, Spatial concentration, bath sewage amount is relatively big, and bathing gap periods is shorter, and the discharge of bath sewage used heat is collected Convenient, reclaim and utilize easily.The residual neat recovering system of domestic or hotel guest room requires to arrange simply, It is convenient to reclaim, it is easy to control.

The another way of the heat pump waste heat recovery system solving domestic or hotel guest room is to use immediate heating type System, eliminate large water tank, be conducive to the domestic confined space install.As Chinese patent is " Instant heating type Heat pump energy-conserving water heater (People's Republic of China (PRC), the patent No.: ZL200620053000.9) ", but it is Big problem is not start thermal source, and this can bring two than more serious problem: 1) at the bathing initial stage, Heat can only be extracted from tap water, waste substantial amounts of tap water, in the city that water resource is more and more nervous It it is another kind of waste；2) bathing is always lagged behind due to the discharge of bath wastewater, and domestic or guest Shop etc. individual bathing occasion, during bathing personnel open hot water valve and close hot water valve time shorter, This immediate heating type unit operation controls difficulty, and the most whole unit cannot run.Likely unit just opens Dynamic, have to stop owing to bathing personnel close hot water valve at once, when bathing, personnel are again turned on valve Time, due to bath wastewater discharge delayed, unit must delayed startup, the most likely in hot water tap Flow out be cold water and cannot bathing, be contradictory while the delayed and i.e. heat request of this system self, Last result is not unit frequent start-stop or does not simply start (losing recuperation of heat meaning), it is simply that washing During bath, bathing personnel keep hot water valve the most normally opened, to sacrifice water resource and the energy for cost guarantee System can stable operation.

Chinese patent " shower steam afterheat of hot water recovery type Teat pump boiler (People's Republic of China (PRC), Shen Please number: 201320102848.6) " with " waste-heat recovery double-source heat pump water heating system (People's Republic of China (PRC), Application number: 201110239271.9) " all disclose one and utilize heat pump principle respectively from bath wastewater and sky The method taking heat in gas, but the method is also not suitable for bathroom that is little in area and that fitted up sizing, the most not It is suitable for domestic and hotel guest room individual's bathing place.Its reason is as follows: first these methods are all not provided with solely Vertical startup thermal source, so that can only extract heat at the bathing initial stage from tap water or room air. Mean to waste substantial amounts of tap water as it was previously stated, extract heat from tap water, there is also operation control Difficulty, from room air extract heat do not possess operable in order to the heat needed for meeting system start-up Property, make hot water meet bathing requirement because being difficult to extract enough startup heats, and air can be made The more and more lower ambient temperature that cannot meet needed for bathing of temperature；Next is different from large-scale bathhouse, for Ensure the air quality in bathroom, need to discharge certain air, such that it is able to it is empty fully to reclaim this part Heat in gas, and domestic or the individual bathing place of hotel guest room, the bathing time is short, during bathing In order to air themperature when ensureing bathing is unlikely to the lowest, air can not be discharged；Last domestic or wine The space in the individual bathing place in customer room is limited, even if being capable of above-mentioned conception, and its whole system System is installed and be there is also bigger difficulty.

Additionally, " a kind of bath wastewater two levels of thermal retracting device (People's Republic of China (PRC), the patent No.: ZL201210366509.9) " a kind of two levels of thermal retracting device reclaimed by heat exchange and heat pump is disclosed, But the subject matter that this device exists is not have independent startup thermal source equally, equally exists above-mentioned in bathing At the initial stage, heat, the problem wasting substantial amounts of tap water, and this device can only be extracted from tap water and want Asking and set up water leg, vaporizer, heat exchanger, condenser, heat-collecting box, whole device is huge, installs ratio Cumbersome, it is little and fitted up the bathroom of sizing to be not suitable for area, is not suitable for domestic and hotel guest room individual Bathing place.

In sum, current published bath wastewater recuperation of heat mode or owing to yield is little, it is impossible to The degree of depth reclaims；Or owing to organic efficiency is low, reclaim cost big；Or due to without independent startup thermal source, waste Valuable water resource；Or system structure complexity, it is impossible to miniaturization, it is unsatisfactory for the restriction of installing space, all It is not applied for the individual bathing place of domestic or hotel guest room.Individual for domestic or hotel guest room washes Required two key issues solved of bath Waste Heat Recovery: one is efficient, and two is that requisite space is little, installs Simply, the patent of the present invention is proposed.

Summary of the invention

The present invention is directed to the Small Washing outdoor bathing place conjunction such as household bath or hotel guest room and propose a kind of degree of depth recovery The Small Washing such as domestic or hotel guest room outdoor bathing place institute bath sewage used heat method and system.

The technical solution used in the present invention is:

A kind of degree of depth reclaims Small Washing outdoor bathing place institute's bath sewage used heat method such as domestic or hotel guest room and is System, including integrated water tank 1, integrated bath platform 2, water admixing device 3, expansion gear 4, Water-wastewater system 5 and refrigerant line system 6.

Compared with tradition bath system, it is characterised in that: water tank is integrated water tank 1.Integrated one The internal key component of body water tank 1 has: compressor 1a, direct submerged condenser 1b, starts Thermal source 1c.

Water-wastewater system 5 is divided into two-way, and wherein a pass enters tap water with water admixing device 3 first Interface is connected, and second interface of water admixing device 3 is connected with the hot water outlet pipe of integrated water tank 1, 3rd interface of water admixing device 3 is sent after being connected with bathing apparatus and cold water and hot water being mixed；Up and down The other road of water system 5 upper strata preheating plate 2a in integrated bath platform 2, tap water in pipe Being preheated, then pass to the bottom water inlet of integrated water tank 1, the water after preheating sends into described collection Integralization water tank 1；

Refrigerant line system 6 is sequentially connected with compressor 1a, direct submerged condenser 1b, expands dress Put 4, the lower floor evaporating pan 2b of integrated bath platform 2, cold-producing medium work process therein is as follows: low The gaseous refrigerant of temperature low pressure compresses through compressor 1a, is converted into high-temperature high-pressure refrigerant gas, from Compressor 1a high-temperature high-pressure refrigerant gas out passes through and is immersed in the straight of integrated water tank 1 Meet submerged condenser 1b, by direct submerged condenser 1b, the water in water tank is heated；From The refrigerant liquid directly flowed out in submerged condenser 1b is again introduced into expansion gear 4, and throttling becomes low The cold-producing medium of temperature low pressure, the cold-producing medium of low-temp low-pressure enters the lower floor evaporating pan 2b of integrated bath platform 2 Evaporate after absorbing the used heat of bath sewage, and be again introduced into compressor 1a and start next heat pump cycle；

Integrated bath platform 2 is mainly made up of upper strata preheating plate 2a and lower floor evaporating pan 2b, and bathing fills The bath sewage putting outflow is collected by described integrated bath platform 2, first flows through upper strata preheating plate 2a And preheat and flow through the tap water of upper strata preheating plate, then pass through lower floor evaporating pan 2b heat is exchanged to Flow through the cold-producing medium of lower floor evaporating pan 2b, finally drained by discharge outlet；

Meanwhile, its feature is also manifested by: " integrated water tank " is internal is divided into upper and lower two inner bags, Centre separates with the dividing plate with through hole, arranges and start thermal source 1c in upper inner-liner, wherein starts thermal source 1c Can be electric heater, initial heat required during in order to provide system start-up, it is unsatisfactory for when water temperature simultaneously As auxiliary thermal source during requirement, when heat recovery system breaks down as standby heat source.Cloth in bottom inner container Putting the condenser of heat pump, condenser is directly immersed in bottom inner container, and this mode is more beneficial for heat exchange. Owing to hot water rises, cold water sinks, the hot water heated by condenser will in upper bottom inner container by every The through hole of plate realizes circulation so that hot water temperature is more uniform.Integrated water tank is outside except protecting Outside temperature is heat insulation, arranges compressor and correlation control unit at upper and lower inner container side surface, and be packaged into integrative-structure.

The present invention another be technically characterized in that bath platform be twin-stage absorb sewage used heat " integrated Bath platform ".

Its inside is mainly made up of preheating plate 2a and evaporating pan 2b.In " integrated bath platform ", First bath sewage is collected by bathing platform, first flows through preheating plate 2a and carries out Waste Heat Recovery for the first time, Pass through evaporating pan 2b and carry out second time Waste Heat Recovery；The another current on the way of tap water pipe line are preheated Dish 2a, carries out heat exchange with a sewage, and enters integrated water tank 1 by pipeline 5b；From in advance The sewage that hot plate 2a flows out passes through evaporating pan 2b, is delivered in cold-producing medium by bathing used heat；From The secondary sewage that evaporating pan 2b flows out then is immediately discharged to sewer.

" integrated bath platform " realizes three partial functions: sewage collecting and tap water heat exchange and with Heat pump vaporizer inner refrigerant heat exchange, therefore have employed the double compass structure of delamination helix: upper layer disc Body realizes and tap water heat exchange, is referred to as " preheating plate ", and lower floor's disk body realizes sewage and the system in vaporizer Cryogen heat exchange, is referred to as " evaporating pan ".

" integrated bath platform " is provided with three to four platform lower limbs, and platform has two-layer slotted disk, every layer of groove The involute drainage groove outside from center shown in Fig. 2 is had on dish.In upper layer disc, groove is built-in with Evolvent type arrange metal thin diameter tube road, pipe arrangement in groove, upper layer disc Cao Caonei center Metal tube outlet is connected with the water inlet of water tank, and the tube head import outside groove is connected with running water pipe.When Bathing platform horizontal positioned and when system is properly functioning, slotted disk collects the sewage of shower people's bathing, after filtration And be allowed to from center charge for remittance mouth crossheading ditch outwardly, and enter lower floor's disk body from outside, the most from the beginning Water crossheading from the outside to the core absorbs heat gradually, thus sewage flows to dish outer shroud from disk center, and tap water is by dish Outer hoop disk center flows, it is achieved tap water and the countercurrent flow of sewage.In like manner, when sewage is from upper strata Time outside disk body outer side inflow lower floor disk body, on lower floor's dish, groove is built-in with the metal that evolvent type is arranged Thin diameter tube road, pipe arrangement is in groove, and pipeline internal medium is cold-producing medium, the gold of lower floor's dish groove center Belonging to pipe to be connected with the outlet of expansion gear, the metal tube head outside groove is connected with compressor inlet, refrigeration Agent is flowed to dish outer shroud by disk center, and sewage, by outer hoop center flow, is finally discharged by center port. Realize the countercurrent flow of cold-producing medium and sewage；

Preheating plate 2a in " integrated bath platform " and evaporating pan 2b can be single step arrangement, also It can be multilevel hierarchy.When for multilevel hierarchy, realize between level and level also according to aforesaid way The countercurrent flow of tap water and sewage, cold-producing medium and sewage.

The present invention has the following advantages and salience effect:

(1) on system flow designs: compare traditional electric heater or use simple heat exchange Energy recovery mode, the system that this project proposes uses and first passes through tap water and bath sewage heat exchange, then Reclaiming two-stage way of recycling by the heat pump degree of depth, the heat energy of recovery is more, in hgher efficiency, more energy efficient, adopts There is provided the mode starting heat with electric heater, it is not necessary to consume extra tap water, run and control more Simply.

(2) structure at device designs, and whole system is divided into two parts, the water of integration Case and the bath platform of integration, thus by complicated system integration, simplify, be allowed to take up room little, Can be arranged in well in all kinds of independent bathroom so that the application of this mode is possibly realized, this Mode not only contributes to the industrialization of product, is more beneficial for the mounting, commissioning and maintenance of product, and has Aesthetic needed for standby resident.

(3) " integrated water tank " design uses submerged condenser mode more in water tank Being conducive to heat exchange, decrease the volume of product, save space, the startup thermal source simultaneously arranged provides The initial heat that system is required when starting, or when water temperature is unsatisfactory for requiring as auxiliary thermal source, or work as As standby heat source when heat recovery system breaks down.

(4), in " integrated bath platform " design, have employed delamination helix double compass structure design, Two-stage countercurrent heat exchange is completed, it is achieved that the densification of system is arranged, solves in limited space This mode uses the most restricted insufficient space problem.

Accompanying drawing explanation

Fig. 1 one degree of depth reclaims the Small Washing such as domestic or hotel guest room outdoor bathing place institute bath sewage used heat Method And Principle figure

Fig. 2 integration bath platform involute structural representation

Fig. 3 preheating plate and integrated bath platform structural representation (section) that evaporating pan is single-stage

Fig. 4 preheating plate is multistage integrated bath platform structural representation (section) with evaporating pan

Wherein: 1 integrated water tank；1a compressor；The direct submerged condenser of 1b；1c opens Dynamic thermal source；2 integrated bath platforms；2a upper strata preheating plate；2b lower floor evaporating pan；3 mix water Device；4 expansion gears；5 water-wastewater systems；6 refrigerant line systems,；5b connects pre- Hot plate and the water supply pipe of water tank；5a connects the water supply pipe of water admixing device.

Detailed description of the invention

The present invention is further illustrated below in conjunction with the accompanying drawings:

A kind of degree of depth that gives Fig. 1 reclaims the Small Washing such as domestic or hotel guest room outdoor bathing place institute bath sewage used heat Method And Principle figure.

One-level bath sewage Waste Heat Recovery: the upper water from water-wastewater system 5 first passes around preheating plate 2a, Carrying out once directly countercurrent flow with the bath sewage used heat flowing through preheating plate, the hot water after being heated is direct It is supplemented in integrated water tank.Whole process achieves the recovery of one-level bath sewage used heat.

Two grades of bath sewage Waste Heat Recovery: in two grades of bath sewage waste heat removal process, have employed heat Pumping system.Low-temperature low-pressure refrigerant after expansion gear 4, flows through evaporating pan 2b, at evaporating pan Absorbing the bath sewage used heat flowed out from preheating plate 2a in 2b, the refrigerant vapour after intensification enters and puts Compressor in integrated water tank, becomes the refrigerant vapour of High Temperature High Pressure, final High Temperature High Pressure Cold-producing medium, by being immersed in the condenser of water tank, directly heats the hot water in water tank, the cold-producing medium after cooling Turn again to blood pressure lowering in throttling blood capillary, become low-temperature low-pressure refrigerant, complete whole heat pump cycle mistake Journey, it is achieved two grades of utilizations to bath sewage waste heat.

Claims

1. the degree of depth reclaims a system for Small Washing outdoor bathing place institute bath sewage used heat, including integrated water tank (1), collection Integralization bath platform (2), water admixing device (3), expansion gear (4), water-wastewater system (5) and refrigerant line system (6), It is characterized in that:

Integrated water tank (1) is internal to be mainly made up of components described below: compressor (1a), direct submerged condenser (1b), Start thermal source (1c)；

Water-wastewater system (5) is divided into two-way, and wherein a pass enters tap water first interface phase with water admixing device (3) Even, second interface of water admixing device (3) is connected with the hot water outlet pipe of integrated water tank (1), water admixing device (3) The 3rd interface be connected with bathing apparatus and cold water and hot water mixed after send；An other road warp of water-wastewater system (5) Crossing the upper strata preheating plate (2a) in integrated bath platform (2), in pipe, tap water is preheated, and then passes to integrated water The bottom water inlet of case (1), the water after preheating sends into described integrated water tank (1)；

Refrigerant line system (6) be sequentially connected with compressor (1a), direct submerged condenser (1b), expansion gear (4), Lower floor's evaporating pan (2b) of integrated bath platform (2), cold-producing medium work process therein is as follows: the gaseous state system of low-temp low-pressure Cryogen compresses through compressor (1a), is converted into high-temperature high-pressure refrigerant gas, from compressor (1a) High Temperature High Pressure out Refrigerant gas passes through the direct submerged condenser (1b) being immersed in integrated water tank (1), by direct immersion Water in water tank is heated by condenser (1b)；The refrigerant liquid flowed out from direct submerged condenser (1b) is again Entering expansion gear (4), throttling becomes the cold-producing medium of low-temp low-pressure, and the cold-producing medium of low-temp low-pressure enters integrated bath platform (2) Lower floor's evaporating pan (2b) absorb the waste heat of bath sewage after evaporate, and be again introduced into compressor (1a) and start next heat pump Circulation；

Integrated bath platform (2) is mainly made up of upper strata preheating plate (2a) and lower floor's evaporating pan (2b), bathing apparatus The bath sewage flowed out is collected by described integrated bath platform (2), first flows through upper strata preheating plate (2a) pre-hot-fluid Cross the tap water of upper strata preheating plate, then pass through lower floor's evaporating pan (2b) and heat is exchanged to flowing through lower floor's evaporating pan (2b) Cold-producing medium, finally drained by discharge outlet；

Water inlet and startup thermal source (1c) of the hot water outlet pipe of integrated water tank (1) are respectively positioned on integrated water The top of case (1).

A kind of degree of depth the most according to claim 1 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, and its feature exists In: integrated water tank is divided into upper and lower two inner bags, is separated by the dividing plate with through hole, directly between upper and lower two inner bags Connect submerged condenser (1b) to be immersed in bottom inner container, upper inner-liner arranges described startup thermal source (1c), start thermal source (1c) Use electric heater；Inner container side surface is arranged compressor and has gateway controller and be jointly packaged into integrative-structure with upper bottom inner container up and down.

A kind of degree of depth the most according to claim 1 and 2 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, and it is special Levy and be: initial heat required during thermal source (1c) offer system start-up is provided, when water temperature is unsatisfactory for requiring as auxiliary heat Source, when heat recovery system breaks down as standby heat source.

A kind of degree of depth the most according to claim 1 and 2 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, and it is special Levy and be: upper strata preheating plate and lower floor's evaporating pan of integrated bath platform (2) are slotted disk, every layer of slotted disk has certainly The involute drainage groove that center is outside, on the preheating plate of upper strata, groove is built-in with the metal thin diameter tube road that evolvent type is arranged, pipe Road is arranged in groove, and the metal tube at Cao Nei center of upper strata preheating plate is connected with the water inlet of water tank, the tube head outside groove with Running water pipe connects, when described integrated bath platform (2) horizontal positioned and when system is properly functioning, and upper strata preheating plate Collect bath sewage, and be allowed to from center charge for remittance mouth crossheading ditch outwardly, and enter lower floor's evaporating pan from outside, the most certainly Water crossheading from the outside to the core absorbs heat gradually, thus sewage flows to dish outer shroud from disk center, and tap water is by Pan Wai hoop disk center Flowing, it is achieved tap water and the countercurrent flow of sewage, when sewage from the preheating plate of upper strata outside side inflow lower floor evaporating pan time, On lower floor's evaporating pan groove be built-in with evolvent type arrange metal thin diameter tube road, pipe arrangement in groove, pipeline internal medium For cold-producing medium, the metal tube at lower floor's evaporating pan center is connected with the outlet of expansion gear (4), the metal tube head outside groove with Compressor inlet connects, and cold-producing medium is flowed to dish outer shroud by disk center, and sewage is by outer hoop center flow, finally by center Discharge outlet discharge, it is achieved cold-producing medium and the countercurrent flow of sewage.

A kind of degree of depth the most according to claim 3 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, and its feature exists In: upper strata preheating plate and lower floor's evaporating pan of integrated bath platform (2) are slotted disk, every layer of slotted disk has from center to Outer involute drainage groove, on the preheating plate of upper strata, groove is built-in with the metal thin diameter tube road that evolvent type is arranged, pipe arrangement exists In groove, the metal tube at Cao Nei center of upper strata preheating plate is connected with the water inlet of water tank, and the tube head outside groove is with running water pipe even Connecing, when described integrated bath platform (2) horizontal positioned and when system is properly functioning, upper strata preheating plate collects bath sewage, And be allowed to from center charge for remittance mouth crossheading ditch outwardly, and enter lower floor's evaporating pan, tap water crossheading from the outside to the core simultaneously from outside Gradually absorbing heat, thus sewage flows to dish outer shroud from disk center, tap water is by the flowing of Pan Wai hoop disk center, it is achieved tap water and The countercurrent flow of sewage, when sewage from the preheating plate of upper strata outside side inflow lower floor evaporating pan time, on lower floor's evaporating pan, groove is built-in Having the metal thin diameter tube road that evolvent type is arranged, pipe arrangement is in groove, and pipeline internal medium is cold-producing medium, in lower floor's evaporating pan The metal tube of the heart is connected with the outlet of expansion gear (4), and the metal tube head outside groove is connected with compressor inlet, cold-producing medium by Flowing to dish outer shroud in disk center, sewage by outer hoop center flow, is finally discharged by the discharge outlet at center, it is achieved cold-producing medium and The countercurrent flow of sewage.

A kind of degree of depth the most according to claim 1 and 2 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, its feature It is: the preheating plate in " integrated bath platform " and evaporating pan can be single step arrangements, it is also possible to be multilevel hierarchy.

A kind of degree of depth the most according to claim 3 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, it is characterised in that: Preheating plate in " integrated bath platform " and evaporating pan can be single step arrangements, it is also possible to be multilevel hierarchy.

A kind of degree of depth the most according to claim 4 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, it is characterised in that: Preheating plate in " integrated bath platform " and evaporating pan can be single step arrangements, it is also possible to be multilevel hierarchy.

A kind of degree of depth the most according to claim 5 reclaims the system of Small Washing outdoor bathing place institute bath sewage used heat, it is characterised in that: Preheating plate in " integrated bath platform " and evaporating pan can be single step arrangements, it is also possible to be multilevel hierarchy.