A detachable water-fluorine two-way step waste heat recovery anti-corrosion heat exchanger

Abstract

The invention discloses a detachable water-fluorine two-way stepped waste heat recovery anti-corrosion heat exchanger, comprising a primary waste heat recovery water way heat exchanger arranged in a primary waste heat recovery water way stratified heat exchange isolation box body, a secondary waste heat recovery fluorine way condensing heat exchanger arranged in a secondary heat exchange box body, a sewage distribution system, a low-temperature water gravity discharge overflow pipeline, and a primary waste heat recovery pipeline inlet and a primary waste heat recovery pipeline outlet arranged on the top of the secondary heat exchange box body, the primary waste heat recovery pipeline inlet is connected to a tap water pipe, the primary waste heat recovery pipeline outlet is connected to the inlet end of a heat pump condenser, and the secondary waste heat recovery fluorine way condensing heat exchanger is respectively connected to a split heat pump throttle valve and a compressor system through a fluorine way pipeline interface. The invention has a simple structure and a small footprint, can maximize the use of waste heat, has high heat transfer efficiency, solves the problem of heat waste, and the temperature of the heat source water is stepped and stratified, with high temperatures at the top and low temperatures at the bottom, and has strong system stability.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a detachable water-fluorine two-way step waste heat recovery anti-corrosion heat exchanger. Background Art

[0002] With the development of the economy and the continuous improvement of people's living standards, people's awareness of energy utilization has gradually increased. When bathing at home or in a bathing center, the hot water still has residual heat after use. The bathing water often flows directly into domestic sewage, causing the heat energy in the bathing water to be lost in vain, resulting in a waste of resources. The current technology for recycling heat energy in bathing sewage is not mature enough. Not only is the overall structure of the device cumbersome and occupies a small area, but the heat extraction is incomplete, and the waste heat cannot be maximized.

[0003] Therefore, in order to overcome the shortcomings of the above-mentioned technology, a detachable water-fluorine two-way step waste heat recovery and anti-corrosion heat exchanger with a simple structure, small footprint, maximum utilization of waste heat, high heat transfer efficiency and solution to the problem of heat waste was designed. This is exactly the problem that the inventor wants to solve. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a detachable water-fluorine two-way step waste heat recovery anti-corrosion heat exchanger, which has a simple structure, occupies a small area, can maximize the use of waste heat, has high heat transfer efficiency, and solves the problem of heat waste.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a detachable water-fluorine two-way step waste heat recovery anti-corrosion heat exchanger, which includes a primary waste heat recovery waterway heat exchanger arranged in a primary waste heat recovery waterway stratified heat exchange isolation box, a secondary waste heat recovery fluorine circuit evaporator, a sewage distribution system, a low-temperature water gravity discharge overflow pipeline arranged in a secondary heat exchange box, and a primary waste heat recovery pipeline inlet and a primary waste heat recovery pipeline outlet arranged on the top of the secondary heat exchange box, the primary waste heat recovery waterway stratified heat exchange isolation box is arranged on the upper part of the secondary heat exchange box, and the secondary waste heat recovery fluorine circuit evaporator is arranged at the lower part of the primary waste heat recovery waterway stratified heat exchange isolation box;

[0006] The sewage distribution system is arranged above the primary waste heat recovery water circuit stratified heat exchange isolation box, and the sewage distribution system comprises a sewage main pipe and a sewage branch pipe, and the sewage main pipe is provided with a plurality of sewage branch pipes;

[0007] The two ends of the primary waste heat recovery water circuit heat exchanger are respectively connected to the primary waste heat recovery pipeline inlet and the primary waste heat recovery pipeline outlet, the primary waste heat recovery pipeline inlet is connected to the tap water pipe, and the primary waste heat recovery pipeline outlet is connected to the inlet end of the heat pump condenser, and a primary heat exchange overflow port is arranged on the side wall of the top of the primary waste heat recovery water circuit stratified heat exchange isolation box;

[0008] The secondary waste heat recovery fluorine circuit evaporator is bilaterally symmetrically arranged in the secondary heat exchange box, and the secondary waste heat recovery fluorine circuit evaporator is respectively connected to the split heat pump throttle valve and the compressor system through the fluorine circuit pipeline interface.

[0009] Furthermore, the secondary heat exchange box and the primary waste heat recovery water circuit layered heat exchange isolation box are both corrosion-resistant and detachable boxes.

[0010] Furthermore, the primary waste heat recovery water circuit heat exchanger and the secondary waste heat recovery fluorine circuit evaporator are made of spiral corrosion-resistant nickel alloy copper tubes or stainless steel tubes.

[0011] Furthermore, the end of the low-temperature water gravity discharge overflow pipeline is arranged at the bottom of the secondary heat exchange box, and the height of the water outlet of the low-temperature water gravity discharge overflow pipeline is the same as the height of the primary heat exchange overflow.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention integrates two independent heat exchangers for water and fluorine, recovers waste heat twice in stages, and maximizes the use of waste heat, solving the problems of incomplete heat extraction and heat waste.

[0014] 2. The two heat exchanges and low-temperature water discharge in the double heat exchange system are gravity overflow, which saves two-stage water pumps, saves energy, and greatly improves the system energy efficiency ratio.

[0015] 3. The heat exchanger and the box are anti-corrosive and detachable, non-corrosive, non-clogging, easy to clean, long service life, and extremely high heat transfer efficiency. The heat exchanger is tall and thin, with a compact structure and a small footprint. There is no need to dig an additional sewage pool, while eliminating the traditional plate heat exchanger, greatly reducing the footprint and saving investment.

[0016] 4. The temperature of the heat source water of the present invention is layered in a stepped manner, with high temperatures at the top and low temperatures at the bottom, and the system has strong stability.

[0017] 5. The present invention is fully automated and can be operated unattended, thus saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Explanation of the accompanying drawings: 1-sewage main pipe; 2-primary waste heat recovery pipeline inlet; 3-primary waste heat recovery pipeline outlet; 4-low-temperature water gravity discharge overflow pipeline; 5-fluorine circuit pipeline interface; 6-sewage branch pipe; 7-primary waste heat recovery water circuit heat exchanger; 8-secondary waste heat recovery fluorine circuit evaporator; 9-primary waste heat recovery water circuit stratified heat exchange isolation box; 10-secondary heat exchange box; 11-primary heat exchange overflow. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with specific embodiments, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

[0021] See also Figure 1 It is a schematic diagram of the overall structure of the present invention, which is a detachable water-fluorine two-way stepped waste heat recovery anti-corrosion heat exchanger, which includes a primary waste heat recovery water circuit heat exchanger 7 arranged in a primary waste heat recovery water circuit stratified heat exchange isolation box 9, a secondary waste heat recovery fluorine circuit evaporator 8 arranged in a secondary heat exchange box 10, a sewage distribution system, a low-temperature water gravity discharge overflow pipeline 4, and a primary waste heat recovery pipeline inlet 2 and a primary waste heat recovery pipeline outlet 3 arranged at the top of the secondary heat exchange box 10, the primary waste heat recovery water circuit stratified heat exchange isolation box 9 is arranged on the upper part of the secondary heat exchange box 10, and the secondary waste heat recovery fluorine circuit evaporator 8 is arranged at the lower part of the primary waste heat recovery water circuit stratified heat exchange isolation box 9.

[0022] The sewage distribution system is arranged above the primary waste heat recovery water circuit stratified heat exchange isolation box 9, and the sewage distribution system comprises a sewage main pipe 1 and a sewage branch pipe 6, and a plurality of sewage branch pipes 6 are arranged on the sewage main pipe 1.

[0023] The two ends of the primary waste heat recovery water circuit heat exchanger 7 are respectively connected to the primary waste heat recovery pipeline inlet 2 and the primary waste heat recovery pipeline outlet 3, the primary waste heat recovery pipeline inlet 2 is connected to the tap water pipe, and the primary waste heat recovery pipeline outlet 3 is connected to the inlet end of the heat pump condenser. A primary heat exchange overflow port 11 is arranged on the side wall of the top of the primary waste heat recovery water circuit stratified heat exchange isolation box 9.

[0024] The secondary waste heat recovery fluorine circuit evaporator 8 is bilaterally symmetrically arranged in the secondary heat exchange box 10 , and the secondary waste heat recovery fluorine circuit evaporator 8 is respectively connected to the split heat pump throttle valve and the compressor system through the fluorine circuit pipeline interface 5 .

[0025] The end of the low-temperature water self-flowing discharge overflow pipeline 4 is arranged at the bottom of the secondary heat exchange box 10 , and the height of the water outlet of the low-temperature water self-flowing discharge overflow pipeline 4 is the same as the height of the primary heat exchange overflow port 11 .

[0026] The 30-35℃ bathing sewage containing a large amount of waste heat that has been filtered in advance is evenly distributed into the primary waste heat recovery water circuit stratified heat exchange isolation box 9 through the distribution system, and the bathing tap water enters the primary waste heat recovery water circuit heat exchanger 7 through the primary waste heat recovery pipeline inlet 2. The 30-35℃ bathing sewage in the primary waste heat recovery water circuit stratified heat exchange isolation box 9 exchanges heat with the bathing tap water. After being preheated to 30-32℃, the bathing tap water is discharged through the primary waste heat recovery pipeline outlet 3 and connected to the condenser inlet of the heat pump or other heat source.

[0027] The 30-35℃ bathing sewage in the primary heat exchange isolation box is cooled to 15-20℃ after heat exchange with bathing tap water, enters the secondary heat exchange box 10 through the primary heat exchange overflow port 11, and exchanges heat with the secondary waste heat recovery fluorine circuit evaporator 8. After the water temperature of the bathing sewage is cooled to 4-6℃, it is discharged through the low-temperature water gravity discharge overflow pipe 4.

[0028] The secondary waste heat recovery fluorine circuit evaporator 8 is connected to the split heat pump throttle valve and the compressor system through the fluorine circuit pipeline interface 5 to form a complete heat pump system. The secondary waste heat recovery fluorine circuit evaporator 8 absorbs heat as the evaporator of the heat pump.

[0029] The present invention integrates two independent heat exchangers for water and fluorine, and recovers waste heat twice in a step-by-step manner, which maximizes the use of waste heat and solves the problems of incomplete heat extraction and heat waste. The two heat exchanges and low-temperature water discharge in the dual heat exchange system are gravity overflows, eliminating the need for two-stage water pumps, which is more energy-efficient and greatly improves the system energy efficiency ratio. The temperature of the heat source water is layered in a step-by-step manner, with high temperatures at the top and low temperatures at the bottom, and the system has strong stability. The heat exchanger and the housing are anti-corrosive and detachable, non-corrosive, non-clogging, easy to clean, long service life, and extremely high heat transfer efficiency. The heat exchanger is tall and thin, with a compact structure and a small footprint. There is no need to dig an additional sewage pool, while eliminating the need for traditional plate heat exchangers, greatly reducing the footprint and saving investment. The device is fully automated and can be unattended, saving manpower.

Claims

1. A detachable water-fluorine two-way step waste heat recovery anti-corrosion heat exchanger, characterized in that: It includes a primary waste heat recovery water circuit heat exchanger arranged in a primary waste heat recovery water circuit stratified heat exchange isolation box, a secondary waste heat recovery fluorine circuit evaporator arranged in a secondary heat exchange box, a sewage distribution system, a low-temperature water gravity discharge overflow pipeline, and a primary waste heat recovery pipeline inlet and a primary waste heat recovery pipeline outlet arranged on the top of the secondary heat exchange box, the primary waste heat recovery water circuit stratified heat exchange isolation box is arranged on the upper part of the secondary heat exchange box, and the secondary waste heat recovery fluorine circuit evaporator is arranged at the lower part of the primary waste heat recovery water circuit stratified heat exchange isolation box; The sewage distribution system is arranged above the primary waste heat recovery water circuit stratified heat exchange isolation box, and the sewage distribution system comprises a sewage main pipe and a sewage branch pipe, and the sewage main pipe is provided with a plurality of sewage branch pipes; The two ends of the primary waste heat recovery water circuit heat exchanger are respectively connected to the primary waste heat recovery pipeline inlet and the primary waste heat recovery pipeline outlet, the primary waste heat recovery pipeline inlet is connected to the tap water pipe, and the primary waste heat recovery pipeline outlet is connected to the inlet end of the heat pump condenser, and a primary heat exchange overflow port is arranged on the side wall of the top of the primary waste heat recovery water circuit stratified heat exchange isolation box; The secondary waste heat recovery fluorine circuit evaporator is symmetrically arranged in the secondary heat exchange box, and the secondary waste heat recovery fluorine circuit evaporator is respectively connected to the split heat pump throttle valve and the compressor system through the fluorine circuit pipeline interface; The secondary heat exchange box and the primary waste heat recovery water circuit layered heat exchange isolation box are both anti-corrosion and detachable boxes; The end of the low-temperature water self-flowing discharge overflow pipeline is arranged at the bottom of the secondary heat exchange box body, and the height of the water outlet of the low-temperature water self-flowing discharge overflow pipeline is the same as the height of the primary heat exchange overflow.

2. According to claim 1, a detachable water-fluorine two-way step waste heat recovery anti-corrosion heat exchanger is characterized by: The primary waste heat recovery water circuit heat exchanger and the secondary waste heat recovery fluorine circuit evaporator are made of spiral corrosion-resistant nickel alloy copper tubes or stainless steel tubes.

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