CN114993100A

CN114993100A - Green building water heat collection balanced system

Info

Publication number: CN114993100A
Application number: CN202210362048.1A
Authority: CN
Inventors: 徐华龙; 陶征强; 陶征庆; 陈海林
Original assignee: Anhui Zhonggu Construction Group Co ltd
Current assignee: Anhui Zhonggu Construction Group Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-09-02

Abstract

The invention provides a water heat collecting and balancing system for a green building, relates to the technical field of waste water waste heat recovery, and provides the following solution for solving the problem that a plate heat exchanger in the existing waste water preheating and recovering system is easy to be attached with dirt: the waste water heat exchange device comprises a compressor, an evaporator, a condenser and a waste water heat exchange device, wherein the waste water heat exchange device comprises a waste water storage tank, a heat exchange mechanism is arranged in the waste water storage tank, a hollow heat exchange plate for circulating clean cold water is arranged in the heat exchange mechanism, a cleaning mechanism is further arranged in the waste water storage tank, a floater is arranged in the cleaning mechanism to enable the cleaning mechanism to move up and down along with the water level in the waste water storage tank, a brush is further arranged in the cleaning mechanism, and the brush hair of the brush is tightly attached to the surface of the hollow heat exchange plate and used for cleaning the surface of the hollow heat exchange plate when the cleaning mechanism moves up and down.

Description

Green building water heat collection balanced system

Technical Field

The invention relates to the technical field of waste water waste heat recovery, in particular to a water heat collection balance system for a green building.

Background

The temperature of bath water (including but not limited to shower water and bath water) is generally between 40 ℃ and 45 ℃, the drainage temperature is between 30 ℃ and 37 ℃, namely only about 20 percent of energy is generally utilized in the using process, and the rest 80 percent of heat is discharged into a sewage pipe network in the form of waste water, so that a large amount of energy is wasted.

In order to recover energy (waste heat) in the bath wastewater, in the prior art, a plate heat exchanger is connected in series with a sewage source heat pump, the bath wastewater is filtered and purified, then is firstly introduced into the plate heat exchanger to preheat tap water, the bath wastewater after being cooled is used as a low-temperature heat source, the preheated tap water is continuously heated by the sewage source heat pump, and the tap water is finally heated to more than 40 ℃ for bathing.

Along with the increase of service time, the dirt constantly adheres to on the heat exchanger slab, leads to heat transfer area to constantly reduce the efficiency and constantly descend (the equipment efficiency reduces 5% for every 1mm of dirt increase), and the compressor load is constantly increased to the dirt that constantly accumulates in the heat exchanger, burns out the compressor easily, and the dirt adheres to and can form spot corrosion on the slab.

The ordinary clean mode is that it is clean to heat exchanger slab surface through motor drive brush head, because the heat exchanger slab outside is waste water entirely, the motor just must be possess good waterproof performance and extremely corrosion-resistant motor, otherwise can't use, and this makes the cost greatly increased of device, and the later maintenance cost after the motor breaks down is also very high.

Disclosure of Invention

The invention aims to provide a water heat collecting and balancing system for a green building, which aims to solve the problems in the background technology.

The utility model provides a green building hydrothermal collection balance system, includes compressor, evaporimeter and condenser, still includes waste water heat transfer device, waste water heat transfer device includes the waste water storage case, be provided with heat transfer mechanism in the waste water storage case, be equipped with the hollow heat transfer board that is used for circulating clean cold water among the heat transfer mechanism, still be equipped with clean mechanism in the waste water storage case, be equipped with the float in the clean mechanism so that clean mechanism follows the water level in the waste water storage case and reciprocates, still be equipped with the brush in the clean mechanism, the brush hair of brush is hugged closely hollow heat transfer board surface and is used for the surface of clean hollow heat transfer board when clean mechanism reciprocates.

Preferably, the waste water storage box includes the box, the upper end of box is equipped with the water purification inlet tube, the lower extreme of box is equipped with the water purification outlet pipe, the bilateral symmetry of box is equipped with waste water inlet tube and waste water outlet pipe, the bottom half is equipped with the drain, drain department is equipped with the end cover.

Preferably, the part of the waste water inlet pipe and the waste water outlet pipe in the box body extends to the bottom surface of the box body.

Preferably, the heat exchange mechanism comprises two water distribution plates which are arranged in an up-and-down symmetrical manner, the two water distribution plates are respectively communicated with the water purification water inlet pipe and the water purification water outlet pipe, a plurality of hollow heat exchange plates are uniformly arranged between the water distribution plates, a plurality of through holes are uniformly formed in the surfaces of the water distribution plates covered by the hollow heat exchange plates, and the through holes are communicated with cold water channels in the hollow heat exchange plates.

Preferably, the hollow heat exchanger plate has a corrugated outer surface.

Preferably, clean mechanism is including evenly setting up four bases in the box bottom surface, be provided with the guide post on the base, base plate sliding connection is on the guide post and place on the base, the symmetry is provided with the float on the bottom surface of base plate.

Preferably, a placing groove is further arranged on one side of the box body, a first support is arranged on one side of the base plate, the first bracket is rotatably connected with a coaxial gear and a first bevel gear, the gear is meshed with a rack arranged in the placing groove, the side surface of the base plate is symmetrically provided with two brackets, a transmission shaft is rotatably connected between the two brackets, a second bevel gear is arranged on the transmission shaft, the first bevel gear is meshed with the second bevel gear, a plurality of worms are further arranged on the transmission shaft, the base plates at the two ends of the hollow heat exchange plate are respectively and rotatably connected with a driving wheel and a driven wheel, the driving wheel is coaxially connected with a worm wheel, the worm wheel is meshed with the worm at the corresponding position, the driving wheel and the driven wheel are arranged in pairs and connected through a belt, the belt surrounds the hollow heat exchange plate, and a brush moving along with the belt is arranged on the belt.

Preferably, the compressor, the secondary side of the evaporator and the primary side of the condenser are communicated with each other, the low-temperature wastewater discharged by the wastewater outlet pipe and the low-temperature purified water discharged by the purified water outlet pipe are respectively introduced into the primary side of the evaporator and the secondary side of the condenser, and the low-temperature wastewater and the low-temperature purified water exchange heat again at the evaporator and the condenser to generate cooling wastewater and high-temperature purified water.

The invention has the advantages that: the cleaning mechanism is arranged, so that when water enters and exits from the waste water storage tank, the surface of the hollow heat exchange plate can be automatically cleaned, the adhesion of dirt on the surface of the heat exchange plate is avoided, the reduction speed of the energy efficiency of the heat exchange plate is greatly reduced, the increase speed of the load of the compressor is reduced, and the spot corrosion caused by the dirt on the surface of the heat exchange plate is avoided;

the cleaning mechanism in the device is driven by buoyancy generated by wastewater and the gravity of the device, the wastewater can be cleaned once when entering and discharging each time, the cleaning is free of manual operation, the use is more worry-saving compared with a motor-driven cleaning mode which still needs manual control, and the use cost of the device is lower compared with a motor-driven mode which needs program control;

because the hollow heat exchange plate in the device has the self-cleaning capacity, the purification grade of the waste water entering the waste water storage tank can be reduced, the cost is reduced, more waste water and waste heat are reserved, and the energy efficiency of waste water and waste heat recovery is improved.

Drawings

Figure 1 is a schematic structural view of the present invention,

FIG. 2 is a schematic sectional view showing the structure of a waste water storage tank according to the present invention,

figure 3 is a schematic view of the internal structure of the present invention,

FIG. 4 is a schematic cross-sectional view of the present invention,

figure 5 is a schematic view of the cleaning mechanism of the present invention,

FIG. 6 is a schematic view showing a compressor, an evaporator and a condenser in the present invention,

in the figure: 1-wastewater heat exchange device, 11-wastewater storage tank, 1101-tank body, 1102-purified water inlet pipe, 1103-purified water outlet pipe, 1104-wastewater inlet pipe, 1105-wastewater outlet pipe, 1106-sewage outlet, 1107-end cover, 1108-placement tank, 12-heat exchange mechanism, 1201-hollow heat exchange plate, 1202-water diversion plate, 1203-through hole, 13-cleaning mechanism, 1301-floater, 1302-brush, 1303-base, 1304-guide column, 1305-base plate, 1306-bracket I, 1307-gear, 1308-bevel gear I, 1309-rack, 1310-bracket II, 1311-transmission shaft, 1312-bevel gear II, 1313-worm, 1314-driving wheel, 1315-driven wheel, 1316-worm wheel, 1317-belt, 2-compressor, 3-evaporator and 4-condenser.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, a green building water heat collecting and balancing system comprises a compressor 2, an evaporator 3 and a condenser 4, and further comprises a waste water heat exchanging device 1, wherein the waste water heat exchanging device 1 comprises a waste water storage tank 11, a heat exchanging mechanism 12 is arranged in the waste water storage tank 11, a hollow heat exchanging plate 1201 for circulating clean cold water is arranged in the heat exchanging mechanism 12, a cleaning mechanism 13 is further arranged in the waste water storage tank 11, a float 1301 is arranged in the cleaning mechanism 13 so that the cleaning mechanism 13 can move up and down along with the water level in the waste water storage tank 11, a brush 1302 is further arranged in the cleaning mechanism 13, and bristles of the brush 1302 are closely attached to the surface of the hollow heat exchanging plate 1201 and used for cleaning the surface of the hollow heat exchanging plate 1201 when the cleaning mechanism 13 moves up and down.

In this embodiment, waste water storage tank 11 includes heat preservation and thermal insulation's box 1101, the upper end of box 1101 is equipped with water purification inlet tube 1102, the lower extreme of box 1101 is equipped with water purification outlet pipe 1103, the bilateral symmetry of box 1101 is equipped with waste water inlet tube 1104 and waste water outlet pipe 1105, waste water inlet tube 1104 and waste water outlet pipe 1105 extend to and are close the box 1101 bottom surface in the part of box 1101, waste water inlet tube 1104 extends to and is close box 1101 bottom surface and makes the water level can rise steadily when putting into waste water to box 1101, waste water outlet pipe 1105 has a distance apart from the box 1101 bottom surface to make the precipitate of box 1101 bottom not together discharge when waste water discharges, the box 1101 bottom is equipped with drain 1106 and is used for discharging the sediment of box 1101 bottom, drain 1106 department is equipped with end cover 1107.

In this embodiment, the heat exchanging mechanism 12 includes two water distribution plates 1202 arranged in an up-down symmetrical manner, the two water distribution plates 1202 are respectively communicated with a purified water inlet pipe 1102 and a purified water outlet pipe 1103, a plurality of hollow heat exchanging plates 1201 are uniformly arranged between the water distribution plates 1202, a plurality of through holes 1203 are uniformly formed in the surfaces of the water distribution plates 1202 covered by the hollow heat exchanging plates 1201, the through holes 1203 are communicated with cold water channels in the hollow heat exchanging plates 1201, and the hollow heat exchanging plates 1201 have wavy outer surfaces to increase contact areas with wastewater and accelerate heat exchanging rate.

In this embodiment, the cleaning mechanism 13 includes four bases 1303 uniformly disposed on the bottom surface of the box 1101, the bases 1303 are provided with guide posts 1304, the base 1305 is slidably connected to the guide posts 1304 and placed on the bases 1303, floats 1301 are symmetrically disposed on the bottom surface of the base 1305, a placement slot 1108 is further disposed on one side of the box 1101, a first support 1306 is disposed on one side of the base 1305, a coaxial gear 1307 and a first bevel gear 1308 are rotatably connected to the first support 1306, the gear 1307 is engaged with a rack 1309 disposed in the placement slot 1108, two supports 1310 are symmetrically disposed on the side surface of the base 1305, a transmission shaft 1311 is rotatably connected between the two supports 1310, a second bevel gear 1312 is disposed on the transmission shaft 1311, the first bevel gear 1308 and the second bevel gear 1308 are engaged with each other, a plurality of worms 1313 are further disposed on the transmission shaft 1311, a driving wheel 1314 and a driven wheel 1314 are rotatably connected to the base 1305 respectively at two ends of the hollow heat exchange plate 1201, the driving wheel 1314 is coaxially connected with a worm wheel 1316, the worm wheel 1316 is meshed with a worm 1313 at a corresponding position, the driving wheel 1314 and a driven wheel 1315 are arranged in pairs and connected through a belt 1317, the belt 1317 surrounds the hollow heat exchange plate 1201, a hairbrush 1302 moving along with the belt 1317 is arranged on the belt 1317, the hairbrush 1302 can move up and down while moving transversely on the surface of the hollow heat exchange plate 1201, and compared with the cleaning by only moving up and down, the effect is better.

In this embodiment, the compressor 2, the secondary side of evaporimeter 3, the primary side of condenser 4 communicate each other, the low temperature waste water of waste water outlet pipe 1105 exhaust and the low temperature water purification of water purification outlet pipe 1103 exhaust let in the primary side of evaporimeter 3 and the secondary side of condenser 4 respectively, low temperature waste water and low temperature water purification are heat transfer once more in evaporimeter 3 and condenser 4 department, generate cooling waste water and high temperature water purification, the heat further recovery in the compressor 2, evaporimeter 3 and condenser 4 to low temperature waste water, greatly increased the recovery effect of waste water waste heat.

In this embodiment, the water outlet of the primary side of the evaporator 3 is connected to a sewage pipe for discharging cooling wastewater, and the water outlet of the secondary side of the condenser 4 is connected to a storage device such as a thermal insulation water tank for use.

The working principle and the process are as follows: when the device is used, wastewater with high temperature is guided into the box 1101 from the wastewater inlet pipe 1104, when the water level in the box 1101 is gradually increased, the floater 1301 receives buoyancy to lift the base plate 1305, in the process, the gear 1307 rotates due to meshing with the rack 1309, the driving wheel 1314 is driven to rotate after multiple transmissions, the driving wheel 1314 drives the belt 1317 and the hairbrush 1302 on the belt 1317 to rotate, and the brush head of the hairbrush 1302 rubs against the surface of the hollow heat exchange plate 1201 to finish cleaning;

then, clean cold water is introduced into the hollow heat exchange plate 1201 through the purified water inlet pipe 1102, the clean cold water exchanges heat with high-temperature wastewater to finish preheating, low-temperature wastewater and low-temperature purified water are generated, and then the low-temperature wastewater and the low-temperature purified water are respectively introduced into the primary side of the evaporator and the secondary side of the condenser;

when the refrigerant on the primary side of the condenser enters the secondary side of the evaporator, the refrigerant exchanges heat with the low-temperature waste water on the primary side of the evaporator, in the evaporator, after the refrigerant absorbs part of waste heat carried by the low-temperature waste water, the refrigerant is vaporized into a gas state with the same temperature and the same pressure as the liquid state, the temperature and the pressure of the gas refrigerant are further increased after the gas refrigerant is compressed by the compressor, and the compressed gas refrigerant enters the primary side of the condenser to exchange heat with low-temperature purified water on the secondary side of the condenser, so that the temperature of the compressed gas refrigerant is increased to be changed into hot water for people to use.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A water heat collecting balance system for green buildings comprises a compressor (2), an evaporator (3) and a condenser (4), it is characterized by also comprising a waste water heat exchange device (1), wherein the waste water heat exchange device (1) comprises a waste water storage tank (11), a heat exchange mechanism (12) is arranged in the wastewater storage tank (11), a hollow heat exchange plate (1201) for circulating clean cold water is arranged in the heat exchange mechanism (12), a cleaning mechanism (13) is also arranged in the waste water storage tank (11), a floater (1301) is arranged in the cleaning mechanism (13) to enable the cleaning mechanism (13) to move up and down along with the water level in the waste water storage tank (11), the cleaning mechanism (13) is also internally provided with a brush (1302), and bristles of the brush (1302) are tightly attached to the surface of the hollow heat exchange plate (1201) and used for cleaning the surface of the hollow heat exchange plate (1201) when the cleaning mechanism (13) moves up and down.

2. The green building water heat collection balance system according to claim 1, wherein the waste water storage tank (11) comprises a tank body (1101), a purified water inlet pipe (1102) is arranged at the upper end of the tank body (1101), a purified water outlet pipe (1103) is arranged at the lower end of the tank body (1101), a waste water inlet pipe (1104) and a waste water outlet pipe (1105) are symmetrically arranged at two sides of the tank body (1101), a sewage discharge port (1106) is arranged at the bottom of the tank body (1101), and an end cover (1107) is arranged at the sewage discharge port (1106).

3. The green building water heat collecting balance system according to claim 2, wherein the part of the waste water inlet pipe (1104) and the waste water outlet pipe (1105) in the tank (1101) extends to the bottom surface of the tank (1101).

4. The green building water heat collecting and balancing system according to claim 1, wherein the heat exchanging mechanism (12) comprises two water distribution plates (1202) which are arranged in an up-down symmetrical manner, the two water distribution plates (1202) are respectively communicated with a purified water inlet pipe (1102) and a purified water outlet pipe (1103), a plurality of hollow heat exchanging plates (1201) are uniformly arranged between the water distribution plates (1202), a plurality of through holes (1203) are uniformly formed in the surface of the water distribution plate (1202) covered by the hollow heat exchanging plates (1201), and the through holes (1203) are communicated with cold water channels in the hollow heat exchanging plates (1201).

5. The green building hydrothermal collection equilibrium system of claim 4, characterized in that the hollow heat exchange plate (1201) has a wavy outer surface.

6. The green building water heat collecting balance system according to claim 2, wherein the cleaning mechanism (13) comprises four bases (1303) uniformly arranged on the bottom surface of the box body (1101), guide posts (1304) are arranged on the bases (1303), the base plate (1305) is slidably connected to the guide posts (1304) and placed on the bases (1303), and floats (1301) are symmetrically arranged on the bottom surface of the base plate (1305).

7. The green building water heat collecting and balancing system according to claim 6, wherein a placing groove (1108) is further provided at one side of the box body (1101), a first bracket (1306) is provided at one side of the base plate (1305), a coaxial gear (1307) and a first bevel gear (1308) are rotatably connected to the first bracket (1306), the gear (1307) is engaged with a rack (1309) provided in the placing groove (1108), a second bracket (1310) is symmetrically provided at a side surface of the base plate (1305), a transmission shaft (1311) is rotatably connected between the second brackets (1310), a second bevel gear (1312) is provided on the transmission shaft (1311), the first bevel gear (1308) is engaged with the second bevel gear (1312), a plurality of worms (1313) are further provided on the transmission shaft (1311), a driving wheel (1314) and a driven wheel (1315) are rotatably connected to the base plates (1305) at two ends of the hollow heat exchange plate (1201) respectively, the heat exchange plate is characterized in that a worm wheel (1316) is coaxially connected to the driving wheel (1314), the worm wheel (1316) is meshed with a worm (1313) at a corresponding position, the driving wheel (1314) and the driven wheel (1315) are arranged in pairs and connected through a belt (1317), the belt (1317) surrounds the hollow heat exchange plate (1201), and a brush (1302) moving along with the belt (1317) is arranged on the belt (1317).

8. The green building water heat collecting and balancing system according to claim 2, wherein the compressor (2), the secondary side of the evaporator (3) and the primary side of the condenser (4) are communicated with each other, low-temperature wastewater discharged from the wastewater outlet pipe (1105) and low-temperature purified water discharged from the purified water outlet pipe (1103) are respectively introduced into the primary side of the evaporator (3) and the secondary side of the condenser (4), and the low-temperature wastewater and the low-temperature purified water exchange heat again at the evaporator (3) and the condenser (4) to generate cooling wastewater and high-temperature purified water.