CN103615804A

CN103615804A - Method and system for deeply recycling bathing sewage waste heat of small bathing places at home or in hotel rooms and like

Info

Publication number: CN103615804A
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: 2014-03-05
Anticipated expiration: 2033-11-21
Also published as: CN103615804B

Abstract

The invention provides a two-stage heat recycling system. Temperature of bathing hot water in small personal bathing places at home, in hotels and the like is about 40 DEG C, the temperature after a human body is sprayed is still very high and about 35-37 DEG C, and all of the high-temperature hot water is directly discharged into sewers, so that a lot of heat is wasted. Aiming at the circumstance of the small personal bathing places at home, in hotels and the like, the two-stage heat recycling system which is characterized by direct heat exchange with taper water and in-depth recycling through a heat pump is provided, the system is composed of an integrated water tank and an integrated bathing platform, a complex system is compacted and simplified, thereby being small in occupied space and capable of being arranged in various independent bathing rooms well, and the problem that bathing space at home or in hotels is insufficient is solved. By the integration mode, product industrialization is facilitated, product mounting, using and maintaining are facilitated, and requirements on attractiveness needed for households are met.

Description

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

Technical field

The invention belongs to energy technology field, relate to a kind of method and system that reclaim the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses, hotel guest room, be specifically related to a kind of method of utilizing heat exchanger and the heat pump twin-stage degree of depth to reclaim bath sewage used heat, the invention still further relates to the system that adopts the method to reclaim bath sewage used heat.

Background technology

The bath hot water of pot-type boiler is 40 ℃ of left and right, after spray human body, temperature is still very high, greatly about 35 ℃ of-37 ℃ of left and right, current situation is that the hot water that these temperature are higher all directly drains into sewer, cause on the one hand the significant wastage of the energy, on the other hand along with the further rise of electric & gas price, resident's bath water power consumption or consumption gas expenditure further increase, therefore more and more nervous at the current energy, in the more and more higher situation of Civil Energy Consumption cost, if can effectively this part heat recovery be recycled, no matter be to saving the energy, save the electricity charge, or environmental protection has very large meaning.

At present, more existing patent and products that utilize heat pump to utilize bath sewage Waste Heat Recovery, utilize heat pump principle, using the bath sewage of discharging as low temperature cold source, and the heat extracting wherein heats running water, realizes the recovery of heat in bath sewage.But these disclosed methods more or less exist variety of issue, and the Small Washing outdoor bathing place institutes such as inapplicable family expenses or hotel guest room specifically comprise:

(1) adopt simple heat exchanger heat exchange, the carrying out of simple low degree some recuperation of heat utilizations, the profound level that cannot realize heat reclaims, still have a large amount of tow taste heats along with sewage is drained, as the Chinese patent " energy-and water-saving shower base (People's Republic of China (PRC), the patent No.: ZL200520078458.5) ", " bathroom special-purpose water heater (the People's Republic of China (PRC), the patent No.: ZL200610104570.0) ", " a kind of heat energy exchange recovery device (People's Republic of China (PRC) for bath wastewater, application number: 201010162747.9) ", " waste water heat recovering equipment and the water heater (People's Republic of China (PRC) thereof, application number: 201020672452.1) ", " shower house (the People's Republic of China (PRC) of bath wastewater heat recovery, application number: 201120034601.6) ".

(2) directly adopt heat pump to extract the single-stage recuperation of heat mode of heat, and not first and low-grade running water heat exchange, organic efficiency is significantly reduced, recovery cost increases, as the Chinese patent " bathing wastewater residue heat recycling device (People's Republic of China (PRC), application number: 200610044652.0) ", " reclaim the carbon dioxide heat pump water heater (People's Republic of China (PRC) of water for bathing waste heat, application number: 201010564629.0) " " the waste heat back-heating type immediate heating type Teat pump boiler (People's Republic of China (PRC), application number: 200920141101.5) ", " with the air source hot pump water heater (People's Republic of China (PRC) of waste heat recovery plant, the patent No.: ZL200620024573.9) ".

(3) system or set up a plurality of water tanks separately, cannot miniaturization, maybe needs to build waste water of bath collecting pit, installs more loaded down with trivial detailsly, is not suitable for area little and fitted up the bathroom of sizing, can not be applied to the individual bathing places such as family expenses and hotel guest room.Application scenario is different, also completely different to the requirement of technological invention, the recovery that more existing patents can only be applied large-scale bathing occasion bath sewage used heat at present, as bathhouse, natatorium etc., large-scale bathhouse and family expenses, as Chinese patent " a kind of bath wastewater two levels of thermal retracting device (People's Republic of China (PRC), application number: 201210366509.9) ", " a kind of wash apparatus of heat pump of recovering residual heat from bathhouse (the People's Republic of China (PRC), patent No. ZL200610112860.X) ", " a kind of two-stage waste-water heat-energy recovery device, application number: 201020645625.0 ".

There is very large difference bathing feature and the application scenario of hotel guest room, comprising:

1) Takd A Bath The Space that close at the Small Washing such as family expenses and hotel guest room outdoor bathing place is limited, and the degree of depth that realizes bath sewage used heat in limited space reclaims, and the structure of system and flow process are had relatively high expectations;

2) bathing that close at the Small Washing such as family expenses and hotel guest room outdoor bathing place disperses, bathing time randomness is stronger, bath sewage amount is less, bathing gap periods is longer, the bathing time, the spatial concentration that are different from large-scale bathhouse, bath sewage amount is larger, and bathing gap periods is shorter, the discharge of bath sewage used heat is collected convenient, reclaims and utilizes easily.The residual neat recovering system that family expenses or hotel guest room are used requires to arrange simple, and it is convenient to reclaim, and is easy to control.

The another way of the heat pump residual neat recovering system that solution family expenses or hotel guest room are used is the system that adopts immediate heating type, has save large water tank, is conducive to install in the family expenses confined space.As Chinese patent " instant heating type heat pump energy-saving water heater (People's Republic of China (PRC); the patent No.: ZL200620053000.9) ", but its greatest problem is to be not activated thermal source, this can bring two more serious problems: 1) at the bathing initial stage, can only from running water, extract heat, wasting a large amount of running water, is another kind of waste in the more and more nervous city of water resource; 2) discharge due to bath wastewater always lags behind bathing, and the occasion in individual bathings such as family expenses or hotels, in bathing process, personnel open hot water valve and close time of hot water valve shorter, and this immediate heating type unit operation is controlled difficulty, and whole unit cannot move even.Likely unit just starts, because closing hot water valve, bathing personnel have to again stop at once, when bathing personnel open valve again, hysteresis due to bath wastewater discharge, the unit startup that must lag behind, what now likely flow out in hot water tap is cold water and cannot bathing, the hysteresis of this system self is contradictory when being heat request, last result is not unit frequent start-stop or does not simply start (losing recuperation of heat meaning), be exactly in bathing process, bathing personnel keep hot water valve often to open always, take and sacrifice water resource and the energy and guarantee that system can stable operation as cost.

Chinese patent " shower hot gas afterheat of hot water recovery type Teat pump boiler (People's Republic of China (PRC); application number: 201320102848.6) " has all been announced a kind of heat pump principle method of heat-obtaining from bath wastewater and air respectively of utilizing with " waste-heat recovery double-source heat pump water heating system (People's Republic of China (PRC); application number: 201110239271.9) ", but it is little and fitted up the bathroom of sizing that the method is not suitable for area equally, is also not suitable for family expenses and hotel guest room individual's bathing place.It is the reasons are as follows: first these methods all do not arrange and independently start thermal source, thereby make can only from running water or room air, extract heat at the bathing initial stage.As previously mentioned, from running water, extract the running water that heat means that waste is a large amount of, also the difficulty that exists operation to control, from room air, extracting heat starts required heat and does not possess operability in order to meet system, because be difficult to extract enough startup heats, make hot water meet bathing requirement, and can make that air themperature is more and more lower cannot meet the required environment temperature of bathing; Next is different from large-scale bathhouse, in order to guarantee the air quality in bathroom, need to discharge certain air, thereby can fully reclaim this part airborne heat, and the individual bathing place of family expenses or hotel guest room, the bathing time is short, and the air themperature in bathing process when guaranteeing bathing is unlikely to too low, can not discharged air; The space in the individual bathing place of last family expenses or hotel guest room is limited, allows to realize above-mentioned conception, and its whole system is installed and also had larger difficulty.

In addition, " 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 reclaiming by heat exchange and heat pump disclosed, but the subject matter that this device exists is independently not start thermal source equally, exist equally above-mentioned at the bathing initial stage, can only from running water, extract heat, waste the problem of a large amount of running water, and this matching requirements sets up water leg, evaporimeter, heat exchanger, condenser, heat-collecting box, whole device is huge, install more loaded down with trivial details, be not suitable for area little and fitted up the bathroom of sizing, be not suitable for family expenses and hotel guest room individual's bathing place.

In sum, the recuperation of heat mode of current published bath wastewater or because yield is little, can not the degree of depth reclaim; Or because organic efficiency is low, reclaim cost large; Or due to without independent startup thermal source, waste valuable water resource; Or System Construction is complicated, cannot miniaturization, do not meet the restriction of installing space, all can not be applicable to the individual bathing place of family expenses or hotel guest room.Two key issues for the required solution of individual bathing Waste Heat Recovery of family expenses or hotel guest room: the one, efficient, the 2nd, requisite space is little, installs simply, proposes patent of the present invention.

Summary of the invention

The present invention is directed to the Small Washing outdoor bathing places such as household bath or hotel guest room and close Small Washing outdoor bathing place institute bath sewage used heat method and system such as having proposed a kind of degree of depth recovery family expenses or hotel guest room.

The technical solution used in the present invention is:

The degree of depth reclaims the Small Washing outdoor bathing place institute bath sewage used heat method and system such as family expenses or hotel guest room, comprises integrated water tank 1, integrated bath platform 2, water admixing device 3, expansion gear 4, tap water pipe line system 5 and refrigerant line system 6.

Compare with traditional bath system, it is characterized in that: water tank is integrated water tank 1.The inner chief component of integrated water tank 1 has: compressor 1a, directly submerged condenser 1b, starts thermal source 1c.

Water-wastewater system 5 is divided into two-way, wherein a pass enters running water and is connected with first interface of water admixing device 3, second interface of water admixing device 3 is connected with the hot water outlet pipe of integrated water tank 1, and the 3rd interface of water admixing device 3 is connected with bathing apparatus and will after cold water and hot water mixing, sends; An other road of water-wastewater system 5 is through the upper strata preheating plate 2a in integrated bath platform 2, and in pipe, running water is preheated, and then passes into the bottom water inlet of integrated water tank 1, and the water after preheating is sent into described water tank 1;

Refrigerant line system 6 connects the evaporating pan 2b of lower floor of compressor 1a, direct submerged condenser 1b, expansion gear 4, integrated bath platform 2 successively, the cold-producing medium course of work is wherein as follows: the gaseous refrigerant of low-temp low-pressure is through compressor 1a compression, be converted into high-temperature high-pressure refrigerant gas, from compressor 1a high-temperature high-pressure refrigerant gas out, flow through again and be immersed in the direct submerged condenser 1b of integrated water tank 1, by direct submerged condenser 1b, the water in water tank is heated; The refrigerant liquid flowing out from direct submerged condenser 1b enters expansion gear 4 again, throttling becomes the cold-producing medium of low-temp low-pressure, the evaporating pan 2b of lower floor that the cold-producing medium of low-temp low-pressure enters integrated bath platform 2 evaporates after absorbing the used heat of bath sewage, and again enters compressor 1a and start next heat pump cycle;

Integrated bath platform 2 is mainly comprised of the evaporating pan 2b of upper strata preheating plate 2aHe lower floor, the bath sewage that bathing apparatus flows out is collected by described bath platform 2, upper strata preheating plate 2a the pre-heated flow of first flowing through crossed the running water of upper strata preheating plate, and then the evaporating pan 2b of lower floor that flows through gives exchange heat the cold-producing medium of the evaporating pan 2b of lower floor that flows through, finally by discharge outlet, drained;

Simultaneously, its feature also shows: " integrated water tank " inside is divided into upper and lower two inner bags, centre uses the dividing plate with through hole to separate, in upper inner-liner, arrange and start thermal source 1c, wherein starting thermal source 1c can be electric heater, required initial heat when providing system to start, simultaneously when water temperature does not meet the demands as auxiliary thermal source, when heat recovery system breaks down as standby heat source.In bottom inner container, arrange the condenser of heat pump, condenser is directly immersed in bottom inner container, and this mode is more conducive to heat exchange.Because hot water rises, cold water sinks, and the hot water heating by condenser will be realized circulation by the through hole by dividing plate in upper bottom inner container, makes hot water temperature more even.Integrated water tank outside, except carrying out insulation, is arranged compressor and CCU at upper and lower inner container side surface, and is packaged into integrative-structure.

Another technical characterictic of the present invention is: bathing platform is " the integrated bath platform " that twin-stage absorbs sewage used heat.

Its internal main will be comprised of preheating plate 2a and evaporating pan 2b.In " integrated bath platform ", first bath sewage is collected by bathing platform, and the preheating plate 2a that first flows through carries out Waste Heat Recovery for the first time, then the evaporating pan 2b that flows through carries out Waste Heat Recovery for the second time; Tap water pipe line separately on the way current through preheating plate 2a, carry out heat exchange with a sewage, and enter water tank 1 by pipeline 5b; The sewage flowing out from the preheating plate 2a evaporating pan 2b that flows through again, is delivered to bathing used heat in cold-producing medium; The secondary sewage flowing out from evaporating pan 2b directly drains into sewer.

" integrated bath platform " realizes three partial functions: sewage collecting, with running water heat exchange and with the heat exchange of heat pump evaporimeter inner refrigerant, therefore the two compass structures of delamination helix have been adopted: upper strata disk body is realized and running water heat exchange, be called " preheating plate ", lower floor's disk body is realized the cold-producing medium heat exchange in sewage and evaporimeter, is called " evaporating pan ".

" integrated bath platform " is provided with three to four platform legs, and platform has two-layer slotted disk, has the outside involute drainage groove in the center of Zi shown in Fig. 2 on every layer of slotted disk.Dish upper groove in upper strata is built-in with the metal thin diameter tube road that evolvent type is arranged, pipe arrangement is in groove, and the outlet of the metal tube at Pan Caocaonei center, upper strata is connected with the water inlet of water tank, and the tube head import in groove outside is connected with running water pipe.When bath platform horizontal positioned and when system is normally moved, slotted disk is collected the sewage of shower people bathing, filter rear and make it outwards to flow from center charge for remittance mouth crossheading ditch, and from outside, enter lower floor's disk body, simultaneously running water absorbs heat gradually from crossheading outside to inside, thereby sewage flows to dish outer shroud from disk center, and running water You Panwai hoop disk center flows, and realizes the countercurrent flow of running water and sewage.In like manner, when sewage is from the disk body of upper strata outside side inflow lower floor disk body time, the upper groove of lower floor's dish is built-in with the metal thin diameter tube road that evolvent type is arranged, pipe arrangement is in groove, and pipeline internal medium is cold-producing medium, and lower floor's dish metal tube of groove center and the outlet of expansion gear are connected, the metal tube head in groove outside is connected with compressor inlet, cold-producing medium is by flowing to dish outer shroud in disk center, and sewage is by outer hoop center flow, finally by the pit of the stomach discharge.Realize the countercurrent flow of cold-producing medium and sewage;

Preheating plate 2a and evaporating pan 2b in " integrated bath platform " can be single step arrangements, can be also multilevel hierarchies.When being multilevel hierarchy, between level and level, realize running water and sewage, the countercurrent flow of cold-producing medium and sewage equally in the manner described above.

The present invention has the following advantages and high-lighting effect:

(1) in system flow design: compare traditional electric heater or adopt simple heat exchange energy recovery mode, the system that this project proposes adopts first by running water and bath sewage heat exchange, the reusable heat pump degree of depth reclaims two-stage way of recycling, the heat energy reclaiming is more, efficiency is higher, more energy-conservation, adopts electric heater that the mode that starts heat is provided, without consuming extra running water, operation is controlled simpler.

(2) in the structural design of device, whole system is divided into two parts, integrated water tank and integrated bath platform, thus by complicated system integration, simplify, make it to take up room little, in can being arranged in well between all kinds of independent bathrooms, make the application of this mode become possibility, this mode is not only conducive to the industrialization of product, more be conducive to the mounting, commissioning and maintenance of product, and possess the required requirement attractive in appearance of resident.

(3) in " integrated water tank " design, in water tank, adopt submerged condenser mode to be more conducive to heat exchange, reduced the volume of product, saved space, the startup thermal source simultaneously arranging provides initial heat required while uniting startup, or when water temperature does not meet the demands as auxiliary thermal source, or when heat recovery system breaks down as standby heat source.

(4) in " integrated bath platform " design, adopted the two compass structure designs of delamination helix, in limited space, completed two-stage countercurrent heat exchange, realized the densification of system and arranged, solved this mode and used the most restricted insufficient space problem.

Accompanying drawing explanation

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

The integrated bath platform of Fig. 2 involute structural representation

Fig. 3 preheating plate and evaporating pan are the integrated bath platform structural representation (section) of single-stage

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

Wherein: 1-integrated water tank; 1a-compressor; 1b-submergence condenser; 1c-startup thermal source; 2-integrated bath platform; 2a-upper strata preheating plate; 2b— lower floor evaporating pan; 3-water admixing device; 4-expansion gear; 5-water-wastewater system; 6---refrigerant line system; The water supply pipe of 5b-connection preheating plate and water tank; The water supply pipe of 5a-connection water admixing device.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is further illustrated:

Fig. 1 has provided the Method And Principle figure that a kind of degree of depth reclaims the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses or hotel guest room.

One-level bath sewage Waste Heat Recovery: first the upper water from running water 5 pass through preheating plate 2a, carries out once directly countercurrent flow with the bath sewage used heat of the preheating plate of flowing through, and the hot water after being heated directly supplements in integrated water tank.Whole process implementation the recovery of one-level bath sewage used heat.

Secondary bath sewage Waste Heat Recovery: in secondary bath sewage used heat waste heat recovery process, adopted heat pump.Low-temperature low-pressure refrigerant after expansion gear 4, evaporating pan 2b flows through, in evaporating pan 2b, absorb the bath sewage used heat flowing out from preheating plate 2a, refrigerant vapour after intensification enters the compressor that is placed in integrated water tank, become the refrigerant vapour of HTHP, final high-temperature high-pressure refrigerant is by being immersed in the condenser of water tank, hot water in direct heating water tank, cold-producing medium after cooling is got back to step-down in throttling capillary again, become low-temperature low-pressure refrigerant, complete whole heat pump cycle process, the secondary utilization of realization to bath sewage used heat waste heat.

Claims

1. the degree of depth reclaims the system of the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses or hotel guest room, comprise integrated water tank 1, integrated bath platform 2, water admixing device 3, expansion gear 4, water-wastewater system 5 and refrigerant line system 6, is characterized in that:

Integrated water tank 1 internal main will be comprised of following parts: compressor 1a, and directly submerged condenser 1b, starts thermal source 1c;

Refrigerant line system 6 connects the evaporating pan 2b of lower floor of compressor 1a, direct submerged condenser 1b, expansion gear 4, integrated bath platform 2 successively, the cold-producing medium course of work is wherein as follows: the gaseous refrigerant of low-temp low-pressure is through compressor 1a compression, be converted into high-temperature high-pressure refrigerant gas, from compressor 1a high-temperature high-pressure refrigerant gas out, flow through again and be immersed in the direct submerged condenser 1b of integrated water tank 1, by direct submerged condenser 1b, the water in water tank is heated; The refrigerant liquid flowing out from direct submerged condenser 1b enters expansion gear 4 again, throttling becomes the cold-producing medium of low-temp low-pressure, the evaporating pan 2b of lower floor that the cold-producing medium of low-temp low-pressure enters integrated bath platform 2 evaporates after absorbing the waste heat of bath sewage, and again enters compressor 1a and start next heat pump cycle;

Integrated bath platform 2 is mainly comprised of the evaporating pan 2b of upper strata preheating plate 2aHe lower floor, the bath sewage that bathing apparatus flows out is collected by described bath platform 2, upper strata preheating plate 2a the pre-heated flow of first flowing through crossed the running water of upper strata preheating plate, and then the evaporating pan 2b of lower floor that flows through gives exchange heat the cold-producing medium of the evaporating pan 2b of lower floor that flows through, finally by discharge outlet, drained.

2. a kind of degree of depth according to claim 1 reclaims the system of the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses or hotel guest room, it is characterized in that: integrated water tank is divided into upper and lower two inner bags, between upper and lower two inner bags, by the dividing plate with through hole, separated, directly submerged condenser 1b is immersed in bottom inner container, described startup thermal source 1c is set in upper inner-liner, starts thermal source 1c and adopt electric heater; Upper and lower inner container side surface is arranged compressor and relevant controlling device and is jointly packaged into integrative-structure with upper bottom inner container.

3. a kind of degree of depth according to claim 1 and 2 reclaims the system of the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses or hotel guest room, it is characterized in that: required initial heat when starting thermal source 1C and providing system to start, when water temperature does not meet the demands as auxiliary thermal source, when heat recovery system breaks down as standby heat source.

4. according to claim 1, a kind of degree of depth described in 2 or 3 reclaims the system of the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses or hotel guest room, it is characterized in that: upper strata preheating plate and lower floor's evaporating pan of integrated bath platform 2 are slotted disk, on every layer of slotted disk, have the involute drainage groove outside from center, 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 is in groove, the metal tube at preheating plate Cao Nei center, upper strata is connected with the water inlet of water tank, the tube head in groove outside is connected with running water pipe, when described bath platform 2 horizontal positioned and when system is normally moved, upper strata preheating plate is collected bath sewage, and make it outwards to flow from center charge for remittance mouth crossheading ditch, and from outside, enter lower floor's evaporating pan, simultaneously running water absorbs heat gradually from crossheading outside to inside, thereby sewage flows to dish outer shroud from disk center, running water You Panwai hoop disk center flows, realize the countercurrent flow of running water and sewage, when sewage is 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 with the metal thin diameter tube road that evolvent type is arranged, pipe arrangement is in groove, pipeline internal medium is 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 in groove outside is connected with compressor inlet, cold-producing medium is by flowing to dish outer shroud in disk center, sewage is by outer hoop center flow, finally by the discharge outlet at center, discharged, realize the countercurrent flow of cold-producing medium and sewage.

5. according to a kind of degree of depth described in claim 1-4, reclaim the system of the Small Washing outdoor bathing place institute bath sewage used heat such as family expenses or hotel guest room, it is characterized in that: preheating plate and evaporating pan in " integrated bath platform " can be single step arrangements, can be also multilevel hierarchies.