CN211575313U

CN211575313U - Immersion heat exchanger

Info

Publication number: CN211575313U
Application number: CN202020112479.9U
Authority: CN
Inventors: 汪发增; 钱海滨; 刘元华; 曹建超; 雷丽; 汪成浩; 厉学锋
Original assignee: Guizhou Zhongnengtou Technology Co ltd
Current assignee: Guizhou Zhongnengtou Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-09-25
Anticipated expiration: 2030-01-17

Abstract

The application relates to the field of heat exchangers, and particularly discloses an immersion type heat exchanger which comprises a heat exchange unit and a surface water disturbance device, wherein the heat exchange unit is placed in a natural water area; the surface water disturbance device comprises a temperature sensor for detecting the temperature of the heat exchange unit, a disturbance blade for disturbing the surface water and a controller electrically connected with the temperature sensor, wherein the controller controls the disturbance blade to start or change the rotating speed of the disturbance blade according to the feedback data of the temperature sensor. The disturbance blade disturbance water can change the velocity of flow through heat transfer unit, when temperature or other reasons cause heat transfer unit heat transfer to be bad, starts the disturbance blade, can improve heat transfer effect. During normal heat dissipation, through the natural flow of water in the water body, heat is diffused in the water body, and therefore the effect of reducing energy consumption can be achieved.

Description

Immersion heat exchanger

Technical Field

The utility model relates to a heat exchanger field, concretely relates to immersion heat exchanger.

Background

The refrigeration system or heating system in the building needs to be provided with an outdoor unit, the outdoor unit is usually a condenser or an evaporator, the nature of the outdoor unit is a heat exchanger, and the existing heat exchanger mainly comprises an air-cooled heat exchanger and a water-cooled heat exchanger; the air-cooled heat exchange needs to be matched with a fan for use, the water-cooled heat exchanger needs to be matched with a water pump for continuously feeding cooling water for circulation, and the energy consumption of a refrigerating system and a heating system can be increased no matter the fan or the water pump.

In order to improve the heat exchange efficiency of the heat exchanger, at present, immersion type heat exchangers are also adopted in some systems. The heat pump water heater with immersed heat exchanger has heat exchanger inside the water tank, working medium of the heat pump entering the phase change heat exchange area from the gas phase port, being liquefied basically and passing through the liquid sealing area, entering the liquid phase area and leaving the heat exchanger from the liquid phase port. The immersion heat exchanger needs to be provided with a water tank, so that the complexity is increased; and because the water yield in the water tank is limited, along with the increase of heat transfer time, the temperature of water in the water tank will continuously rise, consequently also need set up the water pump and in time change the water in the water tank, still not good in the aspect of reducing the power consumption effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an immersion heat exchanger to simplify immersion heat exchanger's structure, and improve the radiating effect, reduce the power consumption.

The immersion heat exchanger comprises a heat exchange unit and a surface water disturbance device which are arranged in a natural water area, wherein one end of the heat exchange unit is connected with the compressor through a four-way reversing valve, and the other end of the heat exchange unit is connected with the expansion valve; the surface water disturbance device comprises a temperature sensor for detecting the temperature of the heat exchange unit, a disturbance blade for disturbing the surface water and a controller electrically connected with the temperature sensor, wherein the controller controls the disturbance blade to start or change the rotating speed of the disturbance blade according to the feedback data of the temperature sensor.

The beneficial effect of this scheme lies in:

the heat exchange unit is placed in a natural water area and exchanges heat with the natural water area through the heat exchange unit so as to dissipate heat of a refrigeration system and a heat pump system of a building; the heat exchange unit is placed in a natural water area to replace an air-cooled heat exchanger, so that the heat exchange efficiency can be improved, and the influence of blown hot air on the external environment of a building can be avoided.

The heat exchange unit is placed in a natural water area to replace a traditional water-cooled heat exchanger, a cooling water circulation system can be omitted, and the structure of the heat exchange device can be simpler; the water quantity of the natural water area is large, and the temperature cannot rise rapidly after a large amount of heat is absorbed, so that high heat dissipation efficiency can be kept for a long time.

The temperature of the heat exchange unit is monitored through the temperature sensor and fed back to the controller to start the disturbance blades, so that the flow speed of water flowing through the heat exchange unit can be changed, and when the heat exchange of the heat exchange unit is poor due to water temperature or other reasons, the disturbance blades are started, and the heat exchange effect can be improved. In the scheme, the disturbance blades are started when the heat dissipation is poor; during normal heat dissipation, the water flows naturally in the water body, so that heat is diffused in the water body, and the effect of reducing energy consumption can be achieved.

The first preferred scheme is as follows: as a further optimization of the basic scheme, a plurality of heat exchange units are arranged, and all the heat exchange units are connected in parallel. The heat dissipation efficiency can be improved by arranging the heat exchange units, and the heat exchange units are provided with a plurality of heat exchange units to form modularization, so that the heat exchange units are installed conveniently.

The preferred scheme II is as follows: as a further optimization of the first preferred scheme, both ends of the heat exchange unit are respectively connected with the four-way reversing valve and the expansion valve through stop valves. When the heat exchange units need to be cleaned, the heat exchange units are connected in series, and the leakage of the refrigerant of the refrigeration system can be prevented by closing the stop valves at the two ends of the heat exchange units, so that the heat exchange units can be quickly disassembled and replaced.

The preferable scheme is three: as a further optimization of the second preferred embodiment, the heat exchange units are arranged oppositely and parallel to each other. The water body can flow between the heat exchange units conveniently, and the modularized installation is facilitated.

The preferable scheme is four: as a further optimization of the third preferred embodiment, the axial direction of the disturbing vanes is perpendicular to the side surface of the heat exchange unit. When the disturbance blades rotate, water flows along the axial direction of the disturbance blades, so that the water flows through the heat exchange unit conveniently, the temperature of the water around the heat exchange unit is prevented from being too high, and the heat can be rapidly diffused in the water after the heat exchange unit exchanges heat with the water.

The preferable scheme is five: as a further optimization of the preferable scheme IV, the system also comprises a floating tank floating on the water surface of the natural water area, and the heat exchange unit and the surface water disturbance device are suspended below the floating tank. Make heat transfer unit and surface water disturbance device float through setting up the floating tank and set up on water, can avoid submarine or shoreside pasture and water to twine surface water disturbance device and heat transfer unit, and be favorable to heat transfer unit and surface water disturbance device's installation and maintenance.

Drawings

FIG. 1 is a schematic diagram of a building temperature control system;

fig. 2 is a schematic diagram of a buoyancy tank suspended heat exchange unit and a surface water disturbance device.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the system comprises a compressor 1, a four-way reversing valve 2, a heat exchange unit 3, an indoor fan coil 4, an expansion valve 5, a stop valve 6, a surface water disturbance device 7, a servo motor 71, disturbance blades 72 and a floating tank 8.

As shown in fig. 1, a temperature control system using a submerged heat exchanger is adapted for cooling and heating of small buildings near natural waters. Immersion heat exchanger includes heat transfer unit 3 and surface water disturbance device 7, and heat transfer unit 3 can set up a plurality ofly, and heat transfer unit 3's setting can carry out modular combination according to compressor 1 refrigerating capacity. In this embodiment, the number of the heat exchange units 3 is two, and the two heat exchange units 3 are arranged in parallel and are directly installed in the natural water area, and heat exchange are performed by heat exchange and convection through natural heat conduction of the heat exchange units 3 and water. The indoor fan coil 4 or the floor heating system is used for heating the interior of a building, the compressor 1 is used for compressing a refrigerant of an intelligent system, the compressor 1, the four-way reversing valve 2, the indoor fan coil 4, the expansion valve 5 and the heat exchange unit 3 are sequentially connected in series, two interfaces of the four-way reversing valve 2 are respectively connected with an air suction port and an air exhaust port of the compressor 1, and the other two interfaces of the four-way reversing valve 2 are respectively communicated with the heat exchange unit 3 and the indoor fan coil 4. The four-way reversing valve 2 can adopt a two-position four-way reversing valve or a three-position four-way reversing valve, and the four-way reversing valve 2 in the embodiment adopts the two-position four-way reversing valve. The four-way reversing valve 2 has two switching positions in total, and the four-way reversing valve 2 is switched to the first switching position in summer, so that the building can be refrigerated; in winter, the four-way reversing valve 2 is switched to the second switching position, and heating can be performed on the building.

Two interfaces of the heat exchange unit 3 are respectively connected with the four-way reversing valve 2 and the expansion valve 5 through a first pipe and a second pipe, the two heat exchange units 3 are connected in parallel on the first pipe and the second pipe to form a module, and the heat exchange unit 3 is connected with the first pipe and the second pipe through the stop valve 6. When the heat exchange unit 3 needs to be cleaned or replaced, the stop valve 6 can be turned off to prevent the leakage of the refrigerant of the refrigeration system from being rapidly disassembled and replaced.

The surface water disturbing device 7 comprises a temperature sensor for detecting the temperature of the heat exchange unit 3, a disturbing blade 72 for disturbing the surface water and a controller electrically connected with the temperature sensor, wherein the controller controls the rotating speed of the disturbing blade 72 according to the feedback data of the temperature sensor, the rotating speed of the disturbing blade 72 is higher when the temperature fed back by the temperature sensor is higher, and the rotating speed of the orbiting blade stops rotating when the temperature fed back by the temperature sensor is lower. The rotation of the disturbance blades 72 is driven by a servo motor 71, and the servo motor 71 is electrically connected to the controller to control the rotation speed of the servo motor 71. As shown in fig. 2, the servo motor 71 and the surface water disturbing device 7 are both suspended in the water body by the buoyancy tank 8; specifically, the first pipe and the second pipe are fixed to the bottom of the buoyancy tank 8 through bolts, and the servo motor 71 is fixedly mounted to the bottom of the buoyancy tank 8 through bolts, so that when the buoyancy tank 8 floats on the water surface, the surface water disturbing device 7 and the heat exchange unit 3 are suspended below the buoyancy tank 8. To prevent the buoyancy tank 8 from moving with the water flow, the buoyancy tank 8 may be positioned by anchor lines. In this embodiment, the heat exchange unit 3 is a heat pipe exchanger, and the axial direction of the disturbance blade 72 is perpendicular to the side surface of the heat exchange unit 3, so that when the disturbance blade 72 rotates, the direction of the water flow is perpendicular to the heat exchange unit 3, and therefore the water flow passes through the heat exchange unit 3 at an accelerated speed, and the heat exchange efficiency is improved. When the water immersion heat exchanger is poor in heat exchange due to water temperature or other reasons, the surface water disturbance device 7 is started, and the heat exchange effect can be improved.

In summer, high-temperature and high-pressure steam of a refrigerant generated by the work of the compressor 1 enters the heat exchange unit 3 through the four-way reversing valve 2 for heat dissipation, the high-pressure liquid refrigerant after heat exchange enters the indoor fan coil 4 for evaporation and heat absorption for refrigeration after passing through the expansion valve 5, and the evaporated refrigerant gas flows back to the air suction port of the compressor 1 through the four-way reversing valve 2 to complete a cycle. In winter, high-temperature and high-pressure steam of a refrigerant generated by the work of the compressor 1 enters the indoor fan coil 4 or the floor heating system through the four-way reversing valve 2 for heat exchange, the high-pressure liquid refrigerant after heat exchange enters the heat exchange unit 3 for heat absorption and evaporation after passing through the expansion valve 5, and the evaporated refrigerant gas returns to the air suction port of the compressor 1 through the four-way reversing valve 2 to complete a cycle. The immersed heat exchanger of the system has no fan or water pump, so that the energy efficiency ratio of the refrigeration system is greatly improved.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Immersion heat exchanger, its characterized in that: the device comprises a heat exchange unit and a surface water disturbance device which are placed in a natural water area, wherein one end of the heat exchange unit is connected with a compressor through a four-way reversing valve, and the other end of the heat exchange unit is connected with an expansion valve; the surface water disturbance device comprises a temperature sensor for detecting the temperature of the heat exchange unit, a disturbance blade for disturbing the surface water and a controller electrically connected with the temperature sensor, wherein the controller controls the disturbance blade to start or change the rotating speed of the disturbance blade according to the feedback data of the temperature sensor.

2. The immersion heat exchanger of claim 1, wherein: the heat exchange units are arranged in a plurality of numbers, and all the heat exchange units are connected in parallel.

3. The immersion heat exchanger of claim 2, wherein: and two ends of the heat exchange unit are respectively connected with the four-way reversing valve and the expansion valve through stop valves.

4. The immersion heat exchanger of claim 3, wherein: the heat exchange units are arranged oppositely and are parallel to each other.

5. The immersion heat exchanger of claim 4, wherein: the axial direction of the disturbance blades is vertical to the side surface of the heat exchange unit.

6. The immersion heat exchanger of claim 5, wherein: the heat exchange unit and the surface water disturbance device are suspended below the floating tank.