Thermal energy conversion device

Abstract

The embodiment of the present application provides a heat energy conversion device, which includes: a base, a first module, a second module and an electric control module, the top of the base has a first area, a second area and a third area; the first module is arranged in the first area of ​​the base, the first module includes a compressor, a condenser and a heat exchanger, the hot side inlet and the hot side outlet of the heat exchanger are connected with the lubricating medium inlet and the lubricating medium outlet of the compressor to form a lubricating medium circulation loop; the second module is arranged in the second area of ​​the base, the second module includes a first throttling element and an evaporator, the compressor, the condenser, the first throttling element and the evaporator are connected through a refrigerant pipeline to form a refrigerant circulation loop; the electric control module is arranged in the third area of ​​the base, and the electric control module is at least electrically connected to the compressor and the first throttling element. In this way, it is conducive to improving the modularization level and the convenience of production and maintenance of the heat energy conversion device, and is conducive to miniaturization and machine series.

Description

Technical Field

[0001] The exemplary embodiments of the present application generally relate to the field of thermal energy utilization, and in particular to a thermal energy conversion device. Background Art

[0002] Heat energy conversion devices such as heat pumps (HP) are used to convert low-quality heat energy into high-quality heat energy to achieve efficient use of heat energy. Conventional heat energy conversion devices still need to be improved in terms of product modularization, machine series, maintenance convenience and miniaturization. Utility Model Content

[0003] The purpose of the present application is to provide a thermal energy conversion device to solve or at least partially solve the above-mentioned problems and / or other potential problems existing in traditional thermal energy conversion devices.

[0004] The present application provides a thermal energy conversion device, comprising:

[0005] A base having a first area, a second area and a third area on the top;

[0006] A first module is arranged in a first area of ​​the base, the first module comprises a compressor, a condenser and a heat exchanger, a hot side inlet and a hot side outlet of the heat exchanger are connected with a lubricating medium inlet and a lubricating medium outlet of the compressor to form a lubricating medium circulation loop;

[0007] A second module is arranged in the second area of ​​the base, the second module includes a first throttling element and an evaporator, and the compressor, the condenser, the first throttling element and the evaporator are connected through a refrigerant pipeline to form a refrigerant circulation loop;

[0008] The electric control module is arranged in the third area of ​​the base, and the electric control module is electrically connected to at least the compressor and the first throttling element.

[0009] In some embodiments, the first module further includes a first bracket disposed in the first region, the first bracket forming a first space above the first region and a second space above the first space;

[0010] The condenser and the heat exchanger are arranged in the first space, and the compressor is arranged in the second space.

[0011] In some embodiments, the first module includes a first preassembled structure, which is formed by preassembling at least two of the compressor, the condenser, the heat exchanger, and the first bracket, and is configured to be installed in the first area after preassembly.

[0012] In some embodiments, the second area and the third area are located on the same side of the first area in the first direction, and the second area and the third area are arranged on the top of the base along a second direction, and the second direction is perpendicular to the first direction.

[0013] In some embodiments, the evaporator is disposed at an end of the second region away from the third region, and the evaporator is located at a side of the second region close to the first region;

[0014] The first throttling element is arranged at one end of the second region away from the third region, and the first throttling element is located on a side of the second region away from the first region.

[0015] In some embodiments, the second module further comprises at least one of a filter drier, an economizer, and a subcooler;

[0016] The dry filter is connected between the condenser and the first throttling element; the dry filter is arranged in the middle of the second region in the second direction, and the dry filter extends along the first direction;

[0017] The cold side inlet of the economizer is connected to the hot side outlet of the condenser through the second throttling element, and the hot side outlet of the economizer is connected to the inlet of the first throttling element; the economizer is arranged at one end of the second area close to the third area, and the economizer is located on one side close to the first area;

[0018] The hot side inlet of the subcooler is connected to the hot side outlet of the condenser, and the hot side outlet of the subcooler is connected to the inlet of the first throttling element; the subcooler is arranged at one end of the second area close to the third area, and the subcooler is located on the side away from the first area.

[0019] In some embodiments, the hot side outlet of the condenser is connected to the inlet of the drier through the first refrigerant main line; the outlet of the drier is connected to the first refrigerant branch line, the second refrigerant branch line and the third refrigerant branch line respectively through the second refrigerant main line;

[0020] The first refrigerant branch pipeline is connected to the cold side inlet of the economizer, and the second throttling element is arranged on the first refrigerant branch pipeline; the second refrigerant branch pipeline is connected to the hot side inlet of the economizer; and the third refrigerant branch pipeline is connected to the hot side inlet of the subcooler;

[0021] The hot side outlet of the economizer is connected to the third refrigerant main line through the fourth refrigerant branch line, the hot side outlet of the subcooler is connected to the third refrigerant main line through the fifth refrigerant branch line, the third refrigerant main line is connected to the inlet of the first throttling element, and the outlet of the first throttling element is connected to the cold side inlet of the evaporator through the fourth refrigerant main line.

[0022] In some embodiments, the second module includes a second preassembled structure, which is formed by pre-assembling the first throttling element and the evaporator, at least one of the drying filter, the economizer and the subcooler, and at least part of the refrigerant piping for connecting to form a refrigerant circulation loop, and the second preassembled structure is configured to be installed in the second area after pre-assembly.

[0023] In some embodiments, the electric control module includes an electric cabinet disposed in the third area and a control unit disposed in the electric cabinet, and the control unit is electrically connected to at least the compressor and the first throttling element.

[0024] In some embodiments, the lubricating medium circulation circuit or the refrigerant circulation circuit is provided with at least one valve, and the control unit is electrically connected to the at least one valve; and / or

[0025] The lubricating medium circulation circuit or the refrigerant circulation circuit is provided with at least one sensor, and the control unit is electrically connected to the at least one sensor.

[0026] The heat energy conversion device of the embodiment of the present application has a first area, a second area and a third area on the top of the base, the first module is installed in the first area, the second module is installed in the second area, the electric control module is installed in the third area, the compressor, condenser, first throttling element and evaporator in the first module and the second module are connected in sequence through the refrigerant pipeline to form a refrigerant circulation loop, and the heat exchanger and the compressor can be connected to form a lubricating medium circulation loop. In this way, it is conducive to improving the modularization level and production and maintenance convenience of the heat energy conversion device, and is conducive to miniaturization and machine series. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other features, advantages and aspects of the embodiments of the present application will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0028] Figure 1 A perspective view showing a thermal energy conversion device according to a first embodiment of the present application;

[0029] Figure 2 A perspective view showing another perspective of the thermal energy conversion device according to the first embodiment of the present application;

[0030] Figure 3 A side view of a thermal energy conversion device according to a first embodiment of the present application is shown;

[0031] Figure 4 A top view of a thermal energy conversion device according to a first embodiment of the present application is shown;

[0032] Figure 5A bottom view of a thermal energy conversion device according to a first embodiment of the present application is shown;

[0033] Figure 6 shows a schematic diagram of a heat pump system according to a second embodiment of the present application;

[0034] Figure 7 Shows Figure 1 A partial enlarged view of part A of the heat energy conversion device;

[0035] Figure 8 Shows Figure 2 A partial enlarged view of part B of the heat energy conversion device;

[0036] Fig. 9 Shows Figure 4 A partial enlarged view of the second region of the medium heat energy conversion device;

[0037] Fig.10 shows a schematic diagram of a heat pump system according to a third embodiment of the present application;

[0038] Fig.11 A schematic diagram showing a heat pump system according to a fourth embodiment of the present application; and

[0039] Fig.12 A schematic diagram of a heat pump system according to a fifth embodiment of the present application is shown.

[0040] Description of reference numerals:

[0041] 10-base; 11-first area; 12-second area; 13-third area; 14-rectangular frame; 15-first crossbeam; 16-second crossbeam; 17-plate structure; 18-first connecting structure; 19-wire take-up groove;

[0042] 20-first module; 21-compressor; 22-condenser; 23-heat exchanger; 24-first bracket; 241-first space; 242-second space; 243-first frame; 244-second frame; 245-third frame;

[0043] 30-second module; 311-first throttling element; 312-evaporator; 313-drying filter; 314-economizer; 315-subcooler; 316-second throttling element; 317-second solenoid valve; 318-third solenoid valve; 319-ball valve; 321-first refrigerant main line; 322-second refrigerant main line; 323-third refrigerant main line; 324-fourth refrigerant main line 325-first refrigerant branch line; 326-second refrigerant branch line; 327-third refrigerant branch line; 328-fourth refrigerant branch line; 329-fifth refrigerant branch line;

[0044] 40-Electrical control module; 41-Electrical cabinet. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0046] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0047] The present application provides a heat energy conversion device, see Figures 1 to 5 As shown, the thermal energy conversion device of the embodiment of the present application may include a base 10 , a first module 20 , a second module 30 and an electric control module 40 .

[0048] The top of the base 10 has a first area 11, a second area 12 and a third area 13. It is understandable that the base 10 here, as a supporting structure for the first module 20, the second module 30 and the electric control module 40, can be formed by any suitable structure. The first module 20, the second module 30 and the electric control module 40 are pre-assembled by corresponding assembly processes. When the whole machine is assembled, the pre-assembled modules are installed in the first area 11, the second area 12 and the third area 13 on the base 10 by hoisting. As a result, the whole machine is assembled modularly, and the pipelines between different modules are easily connected, no welding is required, and no air tightness test is required, which improves the manufacturing and maintenance efficiency.

[0049] Alternatively or additionally, the top of the base 10 may also have a non-planar structure, and the non-planar structure may be divided into a first area 11, a second area 12 and a third area 13. For example, Figure 4 and Figure 5 As shown, the base 10 may include a rectangular frame 14, a plurality of first beams 15 and a plurality of second beams 16. The frame beams of the rectangular frame 14 may be arranged along a first direction (e.g., Figure 4 direction indicated by arrow Y) and a second direction (e.g. Figure 4The plurality of first cross beams 15 extend in the first direction, and the plurality of first cross beams 15 are sequentially arranged in the second direction. The plurality of second cross beams 16 extend in the second direction, and the plurality of second cross beams 16 are sequentially arranged in the first direction. The rectangular base 10 can be divided into a first area 11, a second area 12, and a third area 13.

[0050] Alternatively or additionally, the top of the base 10 may have a planar structure, and the planar structure may be divided into a first area 11, a second area 12, and a third area 13. Figure 4 and Figure 5 A plate-like structure 17 (such as a steel plate, a wooden board, an organic board, etc.) is laid on the top of the rectangular frame 14 , and a planar structure is formed on the top of the base 10 through the plate-like structure 17 .

[0051] The first module 20 is disposed in the first area 11 of the base 10, and includes a compressor 21, a condenser 22, and a heat exchanger 23. The compressor 21 may have a refrigerant inlet, a refrigerant outlet, a lubricating medium inlet, and a lubricating medium outlet. The hot side inlet of the heat exchanger 23 may be connected to the lubricating medium outlet of the compressor 21, and the hot side outlet of the heat exchanger 23 may be connected to the lubricating medium inlet of the compressor 21 to form a lubricating medium circulation loop.

[0052] Alternatively or additionally, the compressor 21 may include but is not limited to an oil-lubricated compressor 21, a water-lubricated compressor 21, a dry compressor 21, etc. For example, the compressor 21 may be an oil-lubricated screw compressor 21. The lubricating medium may include lubricating oil, water, or other medium capable of lubricating the compressor 21.

[0053] Alternatively or additionally, the compressor 21, the condenser 22 and the heat exchanger 23 in the first module 20 may be fixedly connected to form an integral structure. For example, in the production link or the maintenance link, the compressor 21, the condenser 22 and the heat exchanger 23 may be fixedly connected to form an integral structure in advance. Afterwards, the integral structure is installed in the first area 11, which is conducive to improving production efficiency and maintenance convenience.

[0054] The second module 30 is disposed in the second area 12 of the base 10. The second module 30 includes a first throttling element 311 and an evaporator 312. The compressor 21, the condenser 22, the first throttling element 311 and the evaporator 312 are sequentially connected through a refrigerant pipeline to form a refrigerant circulation loop. Specifically, the refrigerant outlet of the compressor 21 can be connected to the hot side inlet of the condenser 22. The hot side outlet of the condenser 22 can be connected to the inlet of the first throttling element 311, the outlet of the first throttling element 311 can be connected to the cold side inlet of the evaporator 312, and the cold side outlet of the evaporator 312 can be connected to the refrigerant inlet of the compressor 21, thereby forming a refrigerant circulation loop, such as Figure 6 shown.

[0055] Alternatively or additionally, the cold side inlet of the condenser 22 may be connected to the heat user through a first medium delivery pipeline, the cold side outlet of the condenser 22 may be connected to a first medium pump through a first medium delivery pipeline, and the first medium pump may be connected to the heat user through a first medium delivery pipeline, forming a circulation loop of the first heat exchange medium. The condenser 22 may be configured to heat the first heat exchange medium using a refrigerant, and the heat user may use the heat energy in the first heat exchange medium.

[0056] Alternatively or additionally, the evaporator 312 may be configured to absorb heat from ambient air. For example, the evaporator 312 may be equipped with a fan for directing airflow through the evaporator 312, where the refrigerant may exchange heat with the air, absorbing heat from the air.

[0057] Alternatively or additionally, the evaporator 312 may also be configured to absorb heat from a heat source device. For example, the hot side inlet of the evaporator 312 may be connected to a second medium pump via a second medium delivery pipeline, the second medium pump may be connected to the heat source device via a second medium delivery pipeline, and the hot side outlet of the evaporator 312 may be connected to the heat source device via a second medium delivery pipeline to form a circulation loop of the second heat exchange medium.

[0058] Alternatively or additionally, the first throttling element 311 and the evaporator 312 in the second module 30 may be fixedly connected to form an integral structure. For example, in the production and maintenance phase, the first throttling element 311 and the evaporator 312 in the second module 30 may be fixedly connected to form an integral structure in advance, and then the integral structure may be installed in the second area 12. It should be noted that the fixed connection in the present application should be understood as no relative movement occurs during the use phase, and the components may be disassembled or assembled during the production and maintenance phases.

[0059] The electric control module 40 is arranged in the third area 13 of the base 10, and the electric control module 40 is electrically connected to at least the compressor 21 and the first throttling element 311. Alternatively or additionally, the electric control module 40 may include an electrical cabinet 41 arranged in the third area 13 and a control unit (not shown in the figure) arranged in the electrical cabinet 41, and the control unit is electrically connected to at least the compressor 21 and the first throttling element 311. In this way, the control unit can be protected by the electrical cabinet 41, which is conducive to improving the safety and stability of the control unit. It can be understood that the control unit may include but is not limited to a control circuit, a power supply circuit, a safety protection circuit, and the like. In the production and maintenance link, the control unit can be pre-installed in the electrical cabinet 41. Afterwards, the electrical cabinet 41 is installed in the third area 13. Alternatively or additionally, a wire take-up groove 19 may be provided on the top of the base 10, and the cable between the control unit and the compressor 21 and the first throttling element 311 may be at least partially accommodated in the wire take-up groove 19.

[0060] The heat energy conversion device of the embodiment of the present application has a first area 11, a second area 12 and a third area 13 on the top of the base 10, a first module 20 is installed in the first area 11, a second module 30 is installed in the second area 12, and an electric control module 40 is installed in the third area 13. The compressor 21, condenser 22, first throttling element 311 and evaporator 312 in the first module 20 and the second module 30 are connected in sequence through a refrigerant pipeline to form a refrigerant circulation loop, and the heat exchanger 23 and the compressor 21 can be connected to form a lubricating medium circulation loop. In this way, it is conducive to improving the modularization level and production and maintenance convenience of the heat energy conversion device, and is conducive to miniaturization and machine series.

[0061] In some embodiments, the first module 20 further includes a first bracket 24 disposed in the first region 11, and the first bracket 24 forms a first space 241 above the first region 11 and a second space 242 located above the first space 241. The condenser 22 and the heat exchanger 23 are disposed in the first space 241, and the compressor 21 is disposed in the second space 242. In this way, the condenser 22, the heat exchanger 23, and the compressor 21 can be installed in layers, which is beneficial to improving the compactness of the first module 20 and realizing the miniaturization of the heat energy conversion device.

[0062] For example, Figure 3 As shown, the first bracket 24 may include a first frame 243 and a second frame 244 arranged in a vertical direction, and a third frame 245 arranged in a horizontal direction. The first frame 243 and the second frame 244 may be arranged opposite to each other, the bottom end of the first frame 243 and the bottom end of the second frame 244 may be fixedly connected to the base 10, and the third frame 245 may be connected between the top end of the first frame 243 and the top end of the second frame 244. For example, the third frame 245 may be welded between the first frame 243 and the second frame 244, or the third frame 245 may be connected to the first frame 243 and the second frame 244 by a connecting member such as a bolt. The space enclosed by the first frame 243, the second frame 244, the third frame 245 and the base 10 may be defined as a first space 241, and the space at the top of the third frame 245 may be defined as a second space 242. Of course, the structure of the first bracket 24 is merely exemplary. In practical applications, various bracket structures can be flexibly selected as long as two layers of space can be formed.

[0063] In some embodiments, the first module 20 may include a first pre-installed structure, which is formed by pre-assembling at least two of the compressor 21, the condenser 22, the heat exchanger 23 and the first bracket 24, and the first pre-installed structure is configured to be installed in the first area 11 after pre-assembly. For example, the compressor 21, the condenser 22, and the heat exchanger 23 can be respectively assembled on the first bracket 24, and the installation of the refrigerant pipeline and the lubricating medium pipeline between the compressor 21, the refrigerant and the heat exchanger 23 is completed to form the first pre-installed structure. When the whole machine is assembled, the first pre-installed structure is installed in the first area 11 on the base 10 by hoisting. As a result, the whole machine is assembled modularly, and the pipelines between different modules are easily connected, no welding is required, and no air tightness test is required, which improves the manufacturing and maintenance efficiency.

[0064] In some embodiments, the first space 241 is provided with a plurality of first connection structures 18, and the condenser 22 is fixed in the first space 241 by a matching first connection structure 18 among the plurality of first connection structures 18. Alternatively or additionally, a plurality of first connection structures 18 may be provided on the base 10 according to the actual size and connection position of the condenser 22 of different models or different powers, and the condenser 22 may be connected to the corresponding first connection structure 18 during production and assembly. In this way, it is conducive to realizing the serialization of models of the thermal energy conversion device.

[0065] The first connection structure 18 here may include various connection structures that can fix the condenser 22 in the first space 241. The first connection structure 18 may include but is not limited to a bolt hole structure, a clamping structure or a riveting structure, etc. For example, Figure 4 As shown, a plurality of groups of bolt holes can be provided on the base 10 for condensers 22 of different models or powers. During production and assembly, the condenser 22 can be fixedly connected to the corresponding group or groups of bolt holes by bolts.

[0066] In some embodiments, the second space 242 is provided with a plurality of second connection structures (not shown in the figure), and the compressor 21 is fixed in the second space 242 by a matching second connection structure among the plurality of second connection structures. Alternatively or additionally, the plurality of second connection structures may be arranged on the first bracket 24. Of course, the compressor 21 may also be connected to the first bracket 24 via an intermediate structure or, for example, a second bracket. In this case, the plurality of second connection structures may also be arranged on the intermediate structure or the second bracket.

[0067] The second connection structure here may include various connection structures capable of connecting the compressor 21 to the second space 242. The second connection structure may include but is not limited to a bolt and screw hole structure, a clamping structure or a riveting structure, etc. For example, for compressors 21 of different models or different powers, multiple groups of bolt holes may be set on the top of the first bracket 24, and during production and assembly, the compressor 21 may be fixedly connected to the corresponding one or more groups of bolt holes by bolts.

[0068] In some embodiments, the second region 12 and the third region 13 are located on the same side of the first region 11 in the first direction, and the second region 12 and the third region 13 are arranged along the second direction on the top of the base 10, and the second direction is perpendicular to the first direction. In this way, the regularity and modularity of the thermal energy conversion device are improved.

[0069] For example, Figure 4 As shown, assuming that the base 10 is rectangular, the extending direction of one side of the rectangle can be defined as a first direction (for example, Figure 4 The extending direction of the other side of the rectangle can be defined as the second direction (for example, Figure 4 The top rectangular area of ​​the base 10 can be divided into three rectangular sub-areas or sub-areas approximately in the shape of a rectangle, wherein one rectangular sub-area extends from one end of the base 10 in the second direction to the other end, and the first area 11 is formed by the rectangular sub-area. The other two rectangular sub-areas are located on the same side of the first area 11 in the first direction, and one of the other two rectangular sub-areas can extend from one end of the base 10 in the second direction to the middle of the base 10, and the other rectangular sub-area can extend from the middle of the base 10 in the second direction to the other end of the base 10 in the second direction.

[0070] Cooperate Figures 7 to 9 As shown, in some embodiments, the evaporator 312 is disposed at one end of the second region 12 away from the third region 13, and the evaporator 312 is located on a side of the second region 12 close to the first region 11. The first throttling element 311 is disposed at one end of the second region 12 away from the third region 13, and the first throttling element 311 is located on a side of the second region 12 away from the first region 11. Specifically, the evaporator 312 and the first throttling element 311 can both be disposed at one end of the second region 12 away from the third region 13, and the evaporator 312 and the first throttling element 311 can be arranged sequentially along the first direction.

[0071] In some embodiments, the second module 30 may further include at least one of a filter dryer 313, an economizer 314, and a subcooler 315. The filter dryer 313 is connected between the condenser 22 and the first throttling element 311. The filter dryer 313 can remove impurities and moisture from the refrigerant, which is beneficial to maintaining the quality of the refrigerant, and is beneficial to delaying the replacement cycle of the refrigerant, thereby helping to reduce the use cost of the heat energy conversion device. The filter dryer 313 is arranged in the middle of the second direction in the second area 12, and the filter dryer 313 extends along the first direction. Alternatively or additionally, the filter dryer 313 may be arranged at a position adjacent to the first throttling element 311 and the evaporator 312.

[0072] The cold side inlet of the economizer 314 is connected to the hot side outlet of the condenser 22 through the second throttling element 316, and the hot side outlet of the economizer 314 is connected to the inlet of the first throttling element 311. The economizer 314 is arranged at one end of the second area 12 close to the third area 13, and the economizer 314 is located on the side close to the first area 11. The second throttling element 316 can throttle and cool down at least part of the refrigerant output from the hot side channel of the condenser 22 to reduce the temperature and pressure of at least part of the refrigerant. At least part of the refrigerant can flow into the cold side channel of the economizer 314, and the economizer 314 is configured to cool down the refrigerant in its hot side channel by using the refrigerant flowing into its cold side channel, and transport the cooled and cooled refrigerant to the first throttling element 311. In this way, the heat energy in the refrigerant can be recovered, and the cooling capacity of the refrigerant delivered to the first throttling element 311 can be increased, thereby reducing the temperature of the refrigerant delivered to the evaporator 312, which is beneficial to improving the heat exchange efficiency of the evaporator 312 and the energy efficiency ratio of the heat energy conversion device.

[0073] The hot side inlet of the subcooler 315 is connected to the hot side outlet of the condenser 22, and the hot side outlet of the subcooler 315 is connected to the inlet of the first throttling element 311. The subcooler 315 is arranged at one end of the second area 12 close to the third area 13, and the subcooler 315 is located on the side away from the first area 11. The subcooler 315 is configured to cool the refrigerant in its hot side channel by using the heat exchange medium in its cold side channel, and transport the cooled refrigerant to the first throttling element 311. In this way, it is beneficial to further reduce the temperature of the refrigerant flowing into the evaporator 312, thereby improving the heat exchange efficiency of the evaporator 312 and the energy efficiency ratio of the heat energy conversion device.

[0074] For example, in actual application, the cold side inlet and the cold side outlet of the subcooler 315 can be connected to the second medium delivery channel for delivering the second heat exchange medium, and the subcooler 315 can use the second heat exchange medium to cool down the refrigerant. After that, the subcooler 315 can provide the heated second heat exchange medium to the hot side channel of the evaporator 312. In this way, the temperature difference between the refrigerant in the cold side channel of the evaporator 312 and the second heat exchange medium in its hot side channel can be increased, which is conducive to improving the heat exchange efficiency of the evaporator 312.

[0075] It can be understood that when the economizer 314 and the supercooler 315 are provided at the same time, the economizer 314 and the supercooler 315 are both provided at one end of the second area 12 close to the third area 13, and the economizer 314 and the supercooler 315 are arranged in sequence along the first direction.

[0076] It should also be noted that, in actual application, only any one of the drying filter 313, the economizer 314 and the supercooler 315 may be provided, or any two of the drying filter 313, the economizer 314 and the supercooler 315 may be provided, or the drying filter 313, the economizer 314 and the supercooler 315 may be provided at the same time.

[0077] The following combination Figures 7 to 10 , the heat energy conversion device is provided with a drying filter 313, an economizer 314 and a supercooler 315, and at least part of the pipeline connection structure of the heat energy conversion device of this embodiment is exemplified, but it should not be understood that it is limited to the pipeline connection structure shown below. In specific implementation, the pipeline connection structure of the heat energy conversion device can be flexibly constructed according to actual needs.

[0078] like Figures 7 to 10 As shown, the hot side outlet of the condenser 22 is connected to the inlet of the filter drier 313 through the first refrigerant main line 321. Alternatively or additionally, the first refrigerant main line 321 may extend in whole or in part along the first direction, one end of the first refrigerant main line 321 may extend to the first region 11 and be connected to the hot side outlet of the condenser 22, and the other end of the first refrigerant main line 321 may be connected to the inlet of the filter drier 313 through, for example, an elbow.

[0079] The outlet of the filter dryer 313 is connected to the first refrigerant branch line 325, the second refrigerant branch line 326 and the third refrigerant branch line 327 respectively through the second refrigerant main line 322. Here, the filter dryer 313 extends along the first direction. Alternatively or additionally, the filter dryer 313 can be arranged in parallel with the first refrigerant main line 321, and the first refrigerant main line 321 can be arranged between the filter dryer 313 and the condenser 22. Alternatively or additionally, one end of the second refrigerant main line 322 can be connected to one end of the filter dryer 313 close to the first area 11, and the second refrigerant main line 322 can also extend along the first direction.

[0080] The first refrigerant branch line 325 is connected to the cold side inlet of the economizer 314, and the second throttling element 316 is disposed on the first refrigerant branch line 325. Alternatively or additionally, the first refrigerant branch line may extend along the second direction and be connected to the cold side inlet of the economizer 314 and the second refrigerant main line 322, respectively.

[0081] The second refrigerant branch line 326 is connected to the hot side inlet of the economizer 314. Alternatively or additionally, one end of the second refrigerant branch line may be connected to the top of the second refrigerant main line 322, and the second refrigerant branch line may extend vertically and then in the second direction, and then be connected to the hot side inlet of the economizer 314. That is, the second refrigerant branch line 326 may be an L-shaped elbow.

[0082] The third refrigerant branch line 327 is connected to the hot side inlet of the subcooler 315. Alternatively or additionally, the third refrigerant branch line may be connected to the second refrigerant main line 322, or may be connected to the second refrigerant main line 322 through the second refrigerant branch line 326. For example, one end of the third refrigerant branch line 327 may be connected to the vertically extending pipe section of the second refrigerant branch line 326, and the third refrigerant branch line 327 may extend in the first direction and then in the second direction, and then be connected to the hot side inlet of the subcooler 315.

[0083] The hot side outlet of the economizer 314 is connected to the third refrigerant main line 323 through the fourth refrigerant branch line 328, the hot side outlet of the subcooler 315 is connected to the third refrigerant main line 323 through the fifth refrigerant branch line 327, the third refrigerant main line 323 is connected to the inlet of the first throttling element 311, and the outlet of the first throttling element 311 is connected to the cold side inlet of the evaporator 312 through the fourth refrigerant main line 324.

[0084] Alternatively or additionally, the third refrigerant main line 323 may be U-shaped, a portion of the U-shaped third refrigerant main line 323 may extend in parallel with the filter drier 313 along the first direction, and one end of the portion of the pipe section extends to the edge of one side of the second area 12 away from the first area 11. Another portion of the pipe section of the third refrigerant main line 323 may be connected to the portion of the pipe section and extend along the second direction to a position close to the first throttling element 311. Another portion of the pipe section of the third refrigerant main line 323 extends along the first direction and is connected to the first throttling element 311. By setting the third refrigerant main line 323 in a U shape, the third refrigerant main line can bypass the filter drier 313 and be connected to the first throttling element 311.

[0085] It should be noted that the connection method of the economizer 314 is only exemplary, and it should not be understood that the economizer 314 is limited to being connected to the condenser 22, the heat exchanger 23 and the first throttling element 311 through the above connection method. The following is an expanded description of the pipe connection structure between the economizer 314 and the condenser 22, the heat exchanger 23 and the first throttling element 311 in combination with two other examples.

[0086] Cooperate Fig.11 As shown, in some embodiments, the cold side inlet of the heat exchanger 23 is connected to the cold side outlet of the economizer 314, and the cold side outlet of the heat exchanger 23 is connected to the hot side inlet of the economizer 314. In this way, the refrigerant output by the condenser 22 flows into the cold side channel of the economizer 314 after being throttled and cooled by the second throttling element 316. After flowing out of the cold side channel of the economizer 314, it flows into the cold side channel of the heat exchanger 23 to cool down the lubricating medium in the hot side channel of the heat exchanger 23. Afterwards, it flows from the cold side channel of the heat exchanger 23 into the hot side channel of the economizer 314, and the refrigerant in the cold side channel of the economizer 314 is cooled down, and the cooled refrigerant is transported to the first throttling element 311. In this way, it is helpful to simplify the piping structure of the refrigerant.

[0087] Cooperate Fig.12As shown, in some embodiments, the hot side inlet of the economizer 314 is connected to the hot side outlet of the condenser 22, the cold side inlet of the heat exchanger 23 is connected to the cold side outlet of the economizer 314, and the cold side outlet of the heat exchanger 23 is connected to the suction port of the compressor 21. The refrigerant flowing out of the hot side channel of the condenser 22 is divided into two streams, one of which flows into the cold side channel of the economizer 314 after being throttled and cooled by the second throttling element 316, and the other refrigerant flows directly into the hot side channel of the economizer 314. The two refrigerants exchange heat in the economizer 314, and the refrigerant in the hot side channel of the economizer 314 flows into the first throttling element 311 after being cooled. The refrigerant in the cold side channel of the economizer 314 flows into the cold side channel of the heat exchanger 23, and the lubricating medium is cooled and cooled in the heat exchanger 23, and then the refrigerant flows back to the compressor 21. In this way, not only can the heat energy in the refrigerant be recovered, but it is also beneficial to maintain the pressure and temperature of the compressor 21, and further to increase the heating temperature of the first heat exchange medium by the condenser 22.

[0088] In some embodiments, the second module 30 includes a second pre-assembled structure, which is formed by pre-assembling the first throttling element 311 and the evaporator 312, at least one of the drying filter 313, the economizer 314 and the subcooler 315, and at least part of the refrigerant pipeline for connecting to form a refrigerant circulation loop, and the second pre-assembled structure is configured to be installed in the second area 12 after pre-assembly. When the whole machine is assembled, the second pre-assembled structure is installed in the second area 12 on the base 10 by hoisting. As a result, the whole machine is assembled modularly, and the pipelines between different modules are easy to connect, and no welding or air tightness testing is required. In addition, the main pipelines of the thermal energy conversion device are relatively concentrated in the second area 12, which can improve maintenance efficiency.

[0089] In some embodiments, at least one valve may be provided in the lubricating medium circulation loop or the refrigerant circulation loop, and the control unit may be electrically connected to the at least one valve. For example, the outlet of the drying filter 313 may be connected to the hot side inlet of the economizer 314 through the first solenoid valve, and the outlet of the drying filter 313 may also be connected to the hot side inlet of the subcooler 315 through the second solenoid valve 317, and the hot side outlet of the subcooler 315 may be connected to the first throttling element 311 through the third solenoid valve 318. The control unit may control the flow of the refrigerant in the refrigerant circulation loop by controlling each valve, and may also control the flow of the lubricating medium in the lubricating medium training loop by controlling each valve, thereby realizing the automatic control of the thermal energy conversion device.

[0090] It is understandable that the first solenoid valve, the second solenoid valve 317 and the third solenoid valve 318 are only exemplary. In actual application, valves such as solenoid valves that can be controlled by the control unit can be set at various positions in the lubricating medium circulation circuit and / or the refrigerant circulation circuit according to actual needs. The at least one valve is not limited to the solenoid valve, and can also include, for example, an electric regulating valve, an electric ball valve 319, an electric stop valve, etc.

[0091] In some embodiments, the lubricating medium circulation circuit or the refrigerant circulation circuit is provided with at least one sensor, the control unit is electrically connected to the at least one sensor, and the control unit can be configured to control the lubricating medium circulation circuit and / or the refrigerant circulation circuit based on the detection result of the at least one sensor. In this way, accurate control of the lubricating medium circulation circuit and / or the refrigerant circulation circuit can be achieved.

[0092] Alternatively or additionally, the at least one sensor may include but is not limited to a pressure sensor, a temperature sensor, a flow sensor, a liquid level sensor, etc. Exemplarily, a temperature sensor and a pressure sensor may be respectively provided on the refrigerant pipeline connected to the refrigerant inlet of the compressor 21 and the refrigerant pipeline connected to the refrigerant outlet of the compressor 21, through which the refrigerant inlet temperature and pressure of the compressor 21 can be detected, or through which the refrigerant outlet temperature and pressure of the compressor 21 can be detected.

[0093] In the above example, the arrangement of sensors is illustrated by taking the compressor 21 as an example. Sensors can be set in the lubricating medium circulation loop, the refrigerant circulation loop, the first heat exchange medium circulation loop, and the second heat exchange medium circulation loop according to actual needs to detect parameters such as pressure, temperature, and flow in the loop.

[0094] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A thermal energy conversion device, characterized in that: include: A base having a first area, a second area and a third area on the top; A first module is arranged in the first area of ​​the base, the first module comprises a compressor, a condenser and a heat exchanger, the hot side inlet and the hot side outlet of the heat exchanger are connected with the lubricating medium inlet and the lubricating medium outlet of the compressor to form a lubricating medium circulation loop; A second module is arranged in the second area of ​​the base, the second module comprises a first throttling element and an evaporator, the compressor, the condenser, the first throttling element and the evaporator are connected through a refrigerant pipeline to form a refrigerant circulation loop; An electric control module is arranged in the third area of ​​the base, and the electric control module is electrically connected to at least the compressor and the first throttling element.

2. The thermal energy conversion device according to claim 1, characterized in that: The first module further includes a first bracket disposed in the first area, the first bracket forming a first space above the first area and a second space above the first space; The condenser and the heat exchanger are disposed in the first space, and the compressor is disposed in the second space.

3. The thermal energy conversion device according to claim 2, characterized in that: The first module includes a first preassembled structure, which is formed by preassembling at least two of the compressor, the condenser, the heat exchanger, and the first bracket, and is configured to be installed in the first area after preassembly.

4. The thermal energy conversion device according to claim 1, characterized in that: The second area and the third area are located on the same side of the first area in the first direction, and the second area and the third area are arranged on the top of the base along a second direction, and the second direction is perpendicular to the first direction.

5. The thermal energy conversion device according to claim 4, characterized in that: The evaporator is arranged at one end of the second region away from the third region, and the evaporator is located at one side of the second region close to the first region; The first throttling element is disposed at one end of the second region away from the third region, and the first throttling element is located at a side of the second region away from the first region.

6. The thermal energy conversion device according to claim 5, characterized in that: The second module further comprises at least one of a filter drier, an economizer, and a subcooler; The dry filter is connected between the condenser and the first throttling element; the dry filter is arranged in the middle of the second area in the second direction, and the dry filter extends along the first direction; The cold side inlet of the economizer is connected to the hot side outlet of the condenser through the second throttling element, and the hot side outlet of the economizer is connected to the inlet of the first throttling element; the economizer is arranged at one end of the second area close to the third area, and the economizer is located on a side close to the first area; The hot side inlet of the subcooler is connected to the hot side outlet of the condenser, and the hot side outlet of the subcooler is connected to the inlet of the first throttling element; the subcooler is arranged at one end of the second area close to the third area, and the subcooler is located on the side away from the first area.

7. The thermal energy conversion device according to claim 6, characterized in that: The hot side outlet of the condenser is connected to the inlet of the drying filter through the first refrigerant main line; the outlet of the drying filter is respectively connected to the first refrigerant branch line, the second refrigerant branch line and the third refrigerant branch line through the second refrigerant main line; The first refrigerant branch pipe is connected to the cold side inlet of the economizer, and the second throttling element is arranged on the first refrigerant branch pipe; the second refrigerant branch pipe is connected to the hot side inlet of the economizer; the third refrigerant branch pipe is connected to the hot side inlet of the subcooler; The hot side outlet of the economizer is connected to the third refrigerant main line through a fourth refrigerant branch line, the hot side outlet of the subcooler is connected to the third refrigerant main line through a fifth refrigerant branch line, the third refrigerant main line is connected to the inlet of the first throttling element, and the outlet of the first throttling element is connected to the cold side inlet of the evaporator through a fourth refrigerant main line.

8. The thermal energy conversion device according to claim 7, characterized in that: The second module includes a second preassembled structure, which is formed by preassembling the first throttling element and the evaporator, at least one of the drying filter, the economizer and the subcooler, and at least part of the refrigerant pipeline for connecting to form the refrigerant circulation loop, and the second preassembled structure is configured to be installed in the second area after preassembly.

9. The thermal energy conversion device according to claim 1, characterized in that: The electric control module includes an electric cabinet arranged in the third area and a control unit arranged in the electric cabinet, and the control unit is electrically connected to at least the compressor and the first throttling element.

10. The thermal energy conversion device according to claim 9, characterized in that: The lubricating medium circulation circuit or the refrigerant circulation circuit is provided with at least one valve, and the control unit is electrically connected to the at least one valve; and / or The lubricating medium circulation circuit or the refrigerant circulation circuit is provided with at least one sensor, and the control unit is electrically connected to the at least one sensor.

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