CN216308280U - Liquid separation type evaporator for ground source heat pump unit - Google Patents
Liquid separation type evaporator for ground source heat pump unit Download PDFInfo
- Publication number
- CN216308280U CN216308280U CN202122627947.3U CN202122627947U CN216308280U CN 216308280 U CN216308280 U CN 216308280U CN 202122627947 U CN202122627947 U CN 202122627947U CN 216308280 U CN216308280 U CN 216308280U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- tube bundle
- exchange tube
- section
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a liquid separation type evaporator for a ground source heat pump unit, which comprises an external support frame, wherein a heat exchange tube bundle overheating section is arranged above the inside of the external support frame, a heat exchange tube bundle evaporation section is arranged below the inside of the external support frame, and the heat exchange tube bundle overheating section and the heat exchange tube bundle evaporation section are communicated through a cylindrical sealing chamber at the rear end of a cylinder; the heat exchange tube bundle comprises a heat exchange tube bundle evaporation section, a heat exchange tube bundle superheat section, a liquid distribution pipe, a refrigerant inlet pipe and a refrigerant outlet pipe, wherein the liquid distribution pipe is positioned between the heat exchange tube bundle evaporation section and the heat exchange tube bundle superheat section; in the utility model, the refrigerant is sprayed out from the lower part of the liquid separating pipe, a liquid film is formed on the heat exchange pipe and exchanges heat with the heat exchange pipe through the liquid film, the heat exchange efficiency is high, and the energy efficiency ratio of the whole unit exceeds that of a common dry evaporator. Meanwhile, the heat transfer area ratio of the evaporation section to the overheating section can be adjusted according to the unit overheating degree requirement, and the universality of the device is improved.
Description
Technical Field
The utility model relates to the field of heat exchangers, in particular to a liquid separation type evaporator for a ground source heat pump unit.
Background
The ground source heat pump is used as the main equipment for central heating (cooling) of geothermal energy in China, and has wide market development prospect. The ground source heat pump technology is a new energy-saving technology for realizing winter heating, summer air conditioning and annual hot water supply of commercial, public and residential buildings by utilizing renewable shallow geothermal energy or surface heat energy (the temperature range is 7-12 ℃) which is universally existed in underground rock-soil layers, namely low-grade heat energy contained in rock-soil bodies, underground water or surface water (including river, lake and sea water). The ground source heat pump system mainly comprises three parts: outdoor heat exchange system, ground source heat pump set, indoor heating air conditioner end system. The ground source heat pump unit mainly comprises a compressor, a condenser, an evaporator, an expansion valve and a control system.
The evaporator is used as an important component of the ground source heat pump unit, and the heat exchange efficiency of the evaporator has great influence on the performance of the ground source heat pump unit. Depending on the type of evaporator, there are various types such as dry evaporators and flooded evaporators.
For a dry evaporator, a refrigerant passes through the heat exchange pipe, and cold water runs outside the heat exchange pipe, so that the heat exchange efficiency of the heat exchanger is relatively low. For a flooded evaporator, a refrigerant is arranged in a shell pass, water is arranged in a tube pass, a large amount of liquid refrigerant is stored in the lower part of the evaporator, and a copper tube of the evaporator is almost completely soaked in the liquid refrigerant, so that the heat exchange efficiency is effectively improved, and because of the above, the suction superheat degree of a system is generally low and is only about 1-2 degrees, which has no problem in a common heat pump unit, but for a special heat pump, such as a high-temperature heat pump, the suction superheat degree is not high enough, so that the required output temperature is probably not reached. On the other hand, if a dry evaporator is used, although the suction superheat degree is large, the requirement of the superheat degree of the high-temperature heat pump can be met, but the heat transfer efficiency is lower than that of a flooded evaporator.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the existing dry evaporator and flooded evaporator cannot meet the requirements of special heat pumps such as high-temperature heat pumps on air suction superheat degree and heat exchange efficiency.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a liquid separation type evaporator for a ground source heat pump unit comprises an external supporting frame, wherein a heat exchange tube bundle overheating section is arranged above the inside of the external supporting frame, a heat exchange tube bundle evaporation section is arranged below the inside of the external supporting frame, and the heat exchange tube bundle overheating section and the heat exchange tube bundle evaporation section are communicated through a cylindrical sealing chamber at the rear end of a cylinder; the heat exchange tube bundle overheating section and the heat exchange tube bundle evaporation section jointly form a heat exchange tube bundle; the heat exchange tube bundle comprises a heat exchange tube bundle evaporation section, a heat exchange tube bundle superheat section, a liquid distribution pipe, a refrigerant inlet pipe and a refrigerant outlet pipe, wherein the liquid distribution pipe is positioned between the heat exchange tube bundle evaporation section and the heat exchange tube bundle superheat section;
the external support frame comprises a cylinder body, two ends of the cylinder body are sealed through circular tube plates, and two ends of the heat exchange tube bundle overheating section and two ends of the heat exchange tube bundle evaporation section penetrate through the circular tube plates and are fixed; the device also comprises a cylindrical liquid separating chamber arranged at the front end of the barrel, wherein the liquid separating chamber is divided into an upper liquid separating chamber and a lower liquid separating chamber, ground source water enters the lower liquid separating chamber from a ground source water inlet and is shunted to enter an evaporation section of the heat exchange tube bundle, then flows through a superheat section of the heat exchange tube bundle, is converged in the upper liquid separating chamber and flows out from a ground source water outlet; the device also comprises a cylindrical sealing chamber arranged at the rear end of the cylinder body.
In particular, the cross section of the liquid separation pipe is oval.
In particular, the liquid dividing holes are distributed on the pipe wall of the lower half part of the liquid dividing pipe.
In particular, the device also comprises a vacuum pump arranged at the pipe orifice of the refrigerant outlet pipe.
In particular, the heat exchange tube bundle is externally threaded.
Compared with the prior art, the utility model has the following advantages and beneficial effects: the refrigerant is sprayed out from the lower part of the liquid separating pipe, a liquid film is formed on the heat exchange pipe and exchanges heat with the heat exchange pipe through the liquid film, the heat exchange efficiency is high, and the energy efficiency ratio of the whole unit exceeds that of a common dry evaporator. Meanwhile, the heat transfer area ratio of the evaporation section to the overheating section can be adjusted according to the unit overheating degree requirement, and the universality of the device is improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of the structure of the plane A-A in FIG. 1.
FIG. 3 is a schematic cross-sectional view taken along the line B-B in FIG. 1.
The explanation of each reference number in the figure is: an outer support frame-1; a barrel-11; a circular tube sheet-12; a liquid separation chamber-13; an upper separation chamber-131; a lower liquid separation chamber-132; a ground source water inlet-14; a ground source water outlet-15; a sealed chamber-16; a heat exchange tube bundle-2; a superheat section-21 of the heat exchange tube bundle; an evaporation section-22 of the heat exchange tube bundle; a liquid separating pipe-3; a liquid separation hole-31; a refrigerant inlet pipe-41; a refrigerant outlet pipe-42.
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, so as to further understand the concept, the technical problems solved, the technical features constituting the technical solutions, and the technical effects brought by the technical solutions.
Referring to fig. 1 to 3, the liquid separation evaporator for the ground source heat pump unit comprises an external support frame 1, wherein a heat exchange tube bundle overheating section 21 is arranged above the inside of the external support frame 1, a heat exchange tube bundle evaporation section 22 is arranged below the inside of the external support frame 1, the heat exchange tube bundle overheating section 21 and the heat exchange tube bundle evaporation section 22 are communicated through a cylindrical sealing chamber at the rear end of a cylinder, and the heat exchange tube bundle overheating section 21 and the heat exchange tube bundle evaporation section 22 jointly form a heat exchange tube bundle 2; the heat exchange tube bundle evaporator further comprises a liquid dividing tube 3 positioned between the heat exchange tube bundle superheating section 21 and the heat exchange tube bundle evaporation section 22, wherein a plurality of liquid dividing holes 31 are formed in the lower half tube wall of the liquid dividing tube 3, and the refrigerant inlet tube 41 and the refrigerant outlet tube 42 are arranged at the top of the liquid dividing tube 3;
the external support frame 1 comprises a cylinder 11, two ends of the cylinder 11 are sealed by circular tube plates 12, and two ends of the heat exchange tube bundle overheating section 21 and two ends of the heat exchange tube bundle evaporation section 22 penetrate through the circular tube plates 12 and are fixed; the heat exchange tube bundle evaporator further comprises a cylindrical liquid separating chamber 13 arranged at the front end of the barrel body 11, wherein the liquid separating chamber 13 is divided into an upper liquid separating chamber 131 and a lower liquid separating chamber 132, ground source water enters the lower liquid separating chamber 132 from a ground source water inlet 14 and is divided to enter the heat exchange tube bundle evaporation section 22, and the ground source water is converged in the upper liquid separating chamber 131 through a heat exchange tube bundle overheating section 21 and flows out from a ground source water outlet 15; and a cylindrical seal chamber 16 provided at the rear end of the cylinder 11.
As a preferred embodiment, the cross section of the liquid dividing pipe 3 is oval, the spraying range of the refrigerant in the liquid dividing pipe 3 is enlarged through the oval liquid dividing pipe 3, a larger coating range of the heat exchange pipe bundle 2 is obtained, and the heat exchange area can be effectively increased.
As a preferred embodiment, the liquid dividing holes 31 are distributed on the tube wall of the lower half of the liquid dividing tube 3; by replacing the existing vertical and centralized arrangement with the dispersed arrangement of the liquid separation holes 31, the spraying range of the refrigerant is further expanded.
As a preferred embodiment, a vacuum pump is further included at the pipe opening of the refrigerant outlet pipe 42, and the vacuum pump provides a power source for the vaporized refrigerant and assists the refrigerant to be sprayed out of the liquid distribution pipe 3.
As a preferred embodiment, the heat exchange tube bundle 2 is externally threaded; the heat exchange tube bundle 2 is a copper tube, and the boiling and evaporation effects of the refrigerant can be greatly improved by externally arranging external threads.
The working principle of the utility model is as follows: ground source water enters from a ground source water inlet 14, enters the sealing chamber 16 through the heat exchange tube bundle evaporation section 22 at the lower half part, flows upwards along the sealing chamber 16, enters the heat exchange tube bundle overheating section 21 at the upper part, exchanges heat with refrigerant outside the heat exchange tube bundle 2 in the whole process, and then flows out through a ground source water outlet 15. For the refrigerant, the refrigerant enters the liquid separating pipe 3 through the refrigerant inlet pipe 41, is sprayed outwards through the liquid separating hole 31 on the side wall of the lower half part of the liquid separating pipe 3, and exchanges heat with the ground source water in the evaporation section 22 of the heat exchange pipe bundle below, part of the refrigerant is heated and vaporized, and exchanges heat with the ground source water in the superheat section 21 of the heat exchange pipe bundle again in the rising process of the vaporized refrigerant, so that the temperature of the gaseous refrigerant is further raised, and the refrigerant is discharged from the device through the refrigerant outlet pipe 42 under the suction action of the vacuum pump for external heating, and the whole working process is completed.
In whole process, the refrigerant is by dividing liquid pipe 3 blowout, forms the liquid film on heat exchange tube bundle 2, with the heat exchange tube heat transfer, its heat transfer area is big, and heat exchange efficiency is high, simultaneously because divide liquid pipe 3 to adopt oval pipe, divide liquid hole 31 area of coverage big, divide the liquid effect better.
The terms "connected" and "fixed" in the description of the present invention may be fixed, formed, welded, or mechanically connected, and the specific meaning of the above terms in the present invention is understood.
In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc. are used in the orientation or positional relationship indicated only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element referred to must have a particular orientation and therefore should not be construed as limiting the present invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A liquid separation type evaporator for a ground source heat pump unit is characterized by comprising an external supporting frame (1), wherein a heat exchange tube bundle overheating section (21) is arranged above the inside of the external supporting frame (1), a heat exchange tube bundle evaporation section (22) is arranged below the inside of the external supporting frame (1), the heat exchange tube bundle overheating section (21) and the heat exchange tube bundle evaporation section (22) are communicated through a cylindrical sealing chamber at the rear end of a cylinder, and the heat exchange tube bundle overheating section (21) and the heat exchange tube bundle evaporation section (22) jointly form a heat exchange tube bundle (2); the heat exchange tube bundle evaporator is characterized by further comprising a liquid distribution tube (3) positioned between the heat exchange tube bundle overheating section (21) and the heat exchange tube bundle evaporation section (22), wherein the lower half tube wall of the liquid distribution tube (3) is provided with a plurality of liquid distribution holes (31), and the heat exchange tube bundle evaporator further comprises a refrigerant inlet tube (41) and a refrigerant outlet tube (42) which are arranged at the top of the liquid distribution tube (3);
the external supporting frame (1) comprises a cylinder body (11), two ends of the cylinder body (11) are sealed through a circular tube plate (12), and two ends of the heat exchange tube bundle overheating section (21) and two ends of the heat exchange tube bundle evaporation section (22) penetrate through the circular tube plate (12) and are fixed; the heat exchange tube bundle evaporator is characterized by further comprising a cylindrical liquid separating chamber (13) arranged at the front end of the barrel body (11), wherein the liquid separating chamber (13) is divided into an upper liquid separating chamber (131) and a lower liquid separating chamber (132), ground source water enters the lower liquid separating chamber (132) from a ground source water inlet (14) and is divided to enter a heat exchange tube bundle evaporation section (22), and flows together in the upper liquid separating chamber (131) through a heat exchange tube bundle overheating section (21) and flows out from a ground source water outlet (15); also comprises a cylindrical sealing chamber (16) arranged at the rear end of the cylinder body (11).
2. The liquid separation type evaporator for the ground source heat pump unit as claimed in claim 1, characterized in that the cross section of the liquid separation pipe (3) is oval.
3. The liquid separation type evaporator for the ground source heat pump unit as claimed in claim 1, characterized in that the liquid separation holes (31) are distributed on the pipe wall of the lower half part of the liquid separation pipe (3).
4. The liquid separation type evaporator for the ground source heat pump unit as claimed in claim 1, characterized by further comprising a vacuum pump arranged at a pipe orifice of the refrigerant outlet pipe (42).
5. The liquid separation type evaporator for the ground source heat pump unit as claimed in claim 1, characterized in that the heat exchange tube bundle (2) is externally threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122627947.3U CN216308280U (en) | 2021-10-29 | 2021-10-29 | Liquid separation type evaporator for ground source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122627947.3U CN216308280U (en) | 2021-10-29 | 2021-10-29 | Liquid separation type evaporator for ground source heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216308280U true CN216308280U (en) | 2022-04-15 |
Family
ID=81117163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122627947.3U Active CN216308280U (en) | 2021-10-29 | 2021-10-29 | Liquid separation type evaporator for ground source heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216308280U (en) |
-
2021
- 2021-10-29 CN CN202122627947.3U patent/CN216308280U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101614451A (en) | Heat pump type air conditioning system and heat recovery system | |
| CN102914012A (en) | Solar energy and water-cooling air-cooling air-conditioning unit combined cold and hot domestic hot water integrated unit | |
| CN101825319B (en) | Special air conditioner for base station with separate type radiation plate evaporator | |
| CN202885144U (en) | Cooling and heating domestic hot water integrated machine unit combining solar energy and water cooling/air cooling air conditioning unit | |
| CN203687251U (en) | Dry air energy and solar energy compounded air conditioning system | |
| CN210267598U (en) | Energy-saving air conditioner with dual-utilization of evaporative cooling cold air and cold water | |
| CN216308280U (en) | Liquid separation type evaporator for ground source heat pump unit | |
| CN209801852U (en) | Vertical falling film absorber and second-class two-stage absorption heat pump | |
| CN200986345Y (en) | Hot-water type lithium bromide absorbing refrigerator between single effect and two stage | |
| CN208063652U (en) | The naturally cold computer-room air conditioning system of passive type heat pipe | |
| CN100445670C (en) | Absorption mode refrigerator of hot water type lithium bromide between single action and two stages | |
| CN206695406U (en) | A kind of solar heat pump integrated control system with automatic sun-tracking function | |
| CN215373029U (en) | Variable-effect two-stage first-type lithium bromide absorption heat pump unit | |
| CN210718193U (en) | Solar photovoltaic jet refrigeration and heating system with four-way valve | |
| CN209978258U (en) | Pentafluoropropane photovoltaic and photo-thermal integrated heat pump circulation system | |
| CN210075869U (en) | Liquid cooling heat dissipation circulation loop device for blade server | |
| CN203024504U (en) | Plate-type evaporator | |
| CN201532048U (en) | Air-conditioning device for heat pump | |
| CN208222914U (en) | A kind of superconduction cumulative heat pump system | |
| CN102563906B (en) | High-energy-efficiency flat-plate type solar collector, processing method thereof and solar cooling and heating air conditioner | |
| CN208042289U (en) | Double-source heat pump and heating system | |
| CN213421423U (en) | Condensing energy-saving device of air conditioner | |
| CN216048474U (en) | Ground source heat pump system with heat recovery function | |
| CN211600978U (en) | Cabinet air conditioner economizer system | |
| CN210463670U (en) | Energy-saving and efficient heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |