CN116294288A - Embedded intermediate heat exchanger with vapor compression refrigeration heat pump - Google Patents

Abstract

The patent discloses an embedded intermediate heat exchanger with a vapor compression refrigeration heat pump, wherein a hot end is formed at the condenser side of the vapor compression refrigeration heat pump, and a cold end is formed at the evaporator side of the vapor compression refrigeration heat pump; the cold end working surface of the intermediate heat exchanger is used as a primary side of the refrigeration heat exchanger to be developed and is matched with a secondary side of the refrigeration heat exchanger to be developed; the hot end working surface is used as the primary side of the heating heat exchanger to be developed and is matched with the secondary side of the heating heat exchanger to be developed; the cold end (1) and the hot end (4) are opposite and are rigidly connected through a connecting rod (3), and the compressor (2) is suspended between the cold end (1) and the hot end (4) through a plurality of tension springs (7); the advantages are that: the whole machine is flattened, the working end surfaces of the two machines are regularly flattened, the external heat exchanger is easy to butt joint, and the working environment is easy to embed through secondary development.

Description

Embedded intermediate heat exchanger with vapor compression refrigeration heat pump

Technical Field

The invention relates to an intermediate heat exchanger, in particular to an embedded intermediate heat exchanger with a vapor compression refrigeration heat pump.

Background

The formation and heat transfer of cold and heat sources are the most basic methods in the thermal engineering technology; implementing temperature and humidity management in an uncertain small space environment has been a challenge in planning manufacturing, for example: the condenser and the heat exchanger (hereinafter referred to as two devices) of the room air conditioner formed according to the building standard have clear data guidance, but personal wearing, portable air conditioning, small tent, infant car, bed, pet residence, catering operation, cold chain operation, desktop operation, local temperature management of production equipment, temperature management of electronic equipment, integrated manufacturing of power phase change temperature management of electronic power devices, portable dehumidification, portable medical temperature and humidity microenvironment establishment, medicine low-temperature mobile storage and the like are lacked design basis so far, and the corresponding problems are solved by adopting individual methods.

No actual intermediate heat exchanger product of a refrigeration heat pump is reported so far, and the corresponding small micro-products only have an Aspen refrigeration compressor in the united states and air radiators of some electronic types, but are only one component and do not form the system characteristics of the refrigeration heat pump. The semiconductor cold stack technology is used for small-space temperature and humidity management machinery, has good matching compatibility, but cannot overcome the principle thermal short circuit, so that the extremely low energy efficiency is difficult to popularize and use in a large area, and has no better batch investment solution because of overlarge data difference of development and application scenes of two devices and random and specific structure shapes of the two devices manufactured in batches. The fact that the dispersion of the two-piece feature creates difficulties in meeting the practical heat exchange environment with the batch investment of manufacturing engineering.

Disclosure of Invention

The invention aims to design an intermediate heat exchanger, and the intermediate heat exchanger is used as a standard component foundation of a novel heat exchanger, so that the difficulty of development of two devices during investment planning, manufacturing, circulation and technical improvement of temperature and humidity management in a small space and a specific environment is reduced.

The technical scheme of this patent is: an embedded intermediate heat exchanger with a vapor compression refrigeration heat pump is characterized in that a hot end heat exchange surface is formed on the condenser side of the vapor compression refrigeration heat pump, and a cold end heat exchange surface is formed on the evaporator side of the vapor compression refrigeration heat pump; the cold end working surface of the intermediate heat exchanger is used as a primary side of the refrigeration heat exchanger to be developed and is matched with a secondary side of the refrigeration heat exchanger to be developed; the hot end working surface is used as the primary side of the heating heat exchanger to be developed and is matched with the secondary side of the heating heat exchanger to be developed;

further, the intermediate heat exchanger comprises a vapor compression refrigeration heat pump consisting of a compressor, a condenser, an expansion valve and an evaporator, a vapor working medium sequentially passes through the evaporator, the compressor, the condenser and the expansion valve through hose connection and then returns to the evaporator to form refrigeration working medium circulation, the condenser is arranged in a metal shell with good heat conductivity and conducts heat with a partition wall of the metal shell to form a hot end of the intermediate heat exchanger, and the evaporator is arranged in another metal shell with good heat conductivity and conducts heat with the partition wall of the metal shell to form a cold end of the intermediate heat exchanger; the cold end and the hot end are opposite, the cold end and the hot end are rigidly connected through a connecting rod, and the compressor is suspended between the cold end and the hot end through a plurality of tension springs; the hot end and the cold end are respectively provided with a heat exchange surface, the hot end heat exchange surface is in heat exchange fit with the body to be heated, and the cold end heat exchange surface is in heat exchange fit with the body to be cooled;

further, the metal shell of the cold end is a platy cuboid, a connecting structure for connecting a body to be cooled is arranged on the metal shell of the cold end, and the heat exchange surface of the cold end is a plane;

further, the metal shell of the hot end is a platy cuboid, a connecting structure for connecting a body to be heated is arranged on the metal shell of the hot end, and a protruding radiating flange is arranged on the hot end heat exchange surface;

further, the hot end is connected to the to-be-heated body through a screw, and the shape of the heat exchange surface of the hot end is matched with the shape of the contact surface of the to-be-heated body; the cold end is connected to the body to be cooled through a screw, and the shape of the cold end heat exchange surface is matched with the shape of the contact surface of the body to be cooled;

further, a gap between a heat radiating coil of the condenser and a metal shell of the hot end is filled with heat conducting liquid or heat conducting paste, and a gap between a heat absorbing coil of the evaporator and a metal shell of the cold end is filled with heat conducting liquid or heat conducting paste;

further, a cold bin is formed on the heat exchange surface of the cold end, and a body to be cooled is arranged in the cold bin;

further, a heat bin is formed on the heat exchange surface of the hot end, and a body to be heated is arranged in the heat bin;

further, the cold end is taken as a cold source and is taken as a primary side of the refrigeration heat exchanger, the cold end is fixedly connected to a secondary side of the refrigeration heat exchanger, and a secondary side heat exchange surface of the refrigeration heat exchanger is attached to a primary side heat exchange surface of the refrigeration heat exchanger for heat transfer; and taking the hot end as a heat source to serve as a primary side of the heating heat exchanger, wherein the hot end is fixedly connected to a secondary side of the hot heat exchanger, and a secondary side heat exchange surface of the heating heat exchanger is attached to a primary side heat exchange surface of the heating heat exchanger for heat transfer.

The advantage of this patent is:

1) The intermediate heat exchanger with the vapor compression refrigeration heat pump has the advantages that the structure is flattened, the working end surfaces of the two heat exchangers are regularly flattened, the externally connected heat exchanger to be developed is easy to butt joint, and the heat exchanger to be developed is easy to embed into a working environment through secondary development; the interface form of the two external heat exchangers is solved, and the business and technical difficulties of the redevelopment of the matching environment are simplified.

2) The intermediate heat exchanger with the vapor compression refrigeration heat pump can be used as a standard component for mechanical industry, thermal industry, medical industry, biological industry, electronic industry, packaging industry, commercial storage and transportation, information industry, household appliances, tourism, catering and human body wearing.

3) The method meets the characteristics of mass production, and can reduce the manufacturing cost of secondary heat exchange development in various small-space environments. The method is easy to organize and manufacture, and the customer can decide the using method according to the using characteristics.

4) The compressor is suspended and fixed by a spring to isolate the pneumatic elastic vibration generated by the compressor.

Drawings

Fig. 1: a front view of the structure of the intermediate heat exchanger;

fig. 2: the bottom view of the structure of the intermediate heat exchanger is disclosed in the patent;

fig. 3: a top view of the structure of the intermediate heat exchanger is disclosed in the patent;

fig. 4: the connection structure of the intermediate heat exchanger and the body to be cooled is schematically shown;

fig. 5: a front view of an intermediate heat exchanger structure with a cold bin on a cold end heat exchange surface;

fig. 6: the cold end heat exchange surface is provided with a bottom view of the middle heat exchanger structure with a cold bin;

in the figure: 1-cold end; 11-a cold end threaded hole; 12-cooling bin; a 2-compressor; 3-connecting rods; 4-hot end; 41-a hot end threaded hole; 42-a heat dissipating flange; a 5-condenser; 6-hose; 7-a tension spring; 8-an expansion valve; 9-an evaporator; 100-a body to be cooled; 101-connecting screw.

Detailed Description

The present patent is described in detail below with reference to the drawings and detailed description.

As shown in fig. 1-3, the intermediate heat exchanger of the embedded self-contained vapor compression refrigeration heat pump comprises a vapor compression refrigeration heat pump consisting of a compressor 2, a condenser 5, an expansion valve 8 and an evaporator 9, wherein refrigeration cycle vapor working medium sequentially passes through the evaporator 9, the compressor 2, the condenser 5 and the expansion valve 8 and then returns to the evaporator 9 to form refrigeration working medium circulation, a heat dissipation metal coil of the condenser 5 is arranged in a metal shell with good heat conductivity to conduct heat with the metal shell to form partition wall heat transfer, and a heat absorption metal coil of the evaporator 9 is arranged in another metal shell with good heat conductivity to conduct heat with the metal shell to form partition wall heat transfer; the condenser 5 and the metal shell thereof form a hot end 4, and the evaporator 9 and the metal shell thereof form a cold end 1. The metal shell is in close contact with the heat absorption metal coil of the evaporator 9 or the heat dissipation metal coil of the condenser 5, the gap between the heat absorption metal coil and the heat dissipation metal coil of the condenser 5 is as small as possible, and in order to further improve the heat transfer efficiency, the gap between the heat dissipation coil of the condenser 5 and the metal shell of the hot end 4 is filled with heat conduction liquid or heat conduction paste with good heat conduction performance, and the gap between the heat absorption coil of the evaporator 9 and the metal shell of the cold end 1 is filled with heat conduction liquid or heat conduction paste with good heat conduction performance.

The refrigeration cycle steam working medium enters the compressor 2 from the evaporator 9 through the hose 6, is pressurized by the compressor 2 and becomes high-temperature and high-pressure steam, then enters the condenser 5, the vapor-liquid two-phase medium subjected to phase change heat release in the condenser 5 enters the evaporator 9 through the hose 6 and the expansion valve 8, is further vaporized in the evaporator 9 and absorbs heat, then enters the compressor 2 to form the steam refrigeration working medium cycle, the temperature of the condenser 5 and the metal shell where the condenser is positioned is increased, the heat release quantity forms a hot end 4 with higher temperature, the temperature of the evaporator 9 and the metal shell where the evaporator is positioned is reduced to form a cold end 1 with lower temperature, and a continuous larger temperature difference is formed between the hot end 4 and the cold end 1. Flexible connections are formed between the inlet of the condenser 5 and the outlet of the compressor 2, between the outlet of the condenser 5 and the inlet of the expansion valve 8 at the front end of the evaporator 9, and between the outlet of the evaporator 9 and the inlet of the compressor 2 through a hose 6, which is beneficial to reducing noise and vibration, and the expansion valve 8 is fixedly connected to the inlet end of the evaporator 9 through a pipe, however, a capillary tube may be used instead of the expansion valve 8.

The cold end 1 and the hot end 4 are arranged on two sides of the compressor 2, the cold end 1 and the hot end 4 are rigidly connected through a plurality of connecting rods 3, two ends of the connecting rods 3 are connected to the metal shell of the cold end 1 and the metal shell of the hot end 4 through threads, in the embodiment, 4 connecting rods 3 are adopted, and the 4 connecting rods 3 are respectively connected to four corners of the metal shells of the cold end 1 and the hot end 4; the compressor 2 is suspended between the cold end 1 and the hot end 4 through a plurality of tension springs 7, the number of the tension springs 7 is generally 4-8, the number of the tension springs 7 adopted in the embodiment is 8, the compressor 2 is connected to the metal shell of the cold end 1 through the 4 tension springs 7 or respectively connected to the four connecting rods 3, and the other 4 tension springs 7 are connected to the metal shell of the hot end 4 or respectively connected to the other four connecting rods 3; the tension spring 7 is used for elastically connecting the compressor 2 to the cold end 1 and the hot end 4, so that the running vibration and noise of the compressor 2 can be effectively reduced.

As an intermediate heat exchanger, the hot end 4 is fixedly connected with a body to be heated through a connecting structure on the intermediate heat exchanger, the cold end 1 is fixedly connected with the body to be cooled 100 through a connecting structure on the hot end 4, which is used as a high-temperature heat source side, performs heat conduction and heat exchange with the body to be heated, which is used as a secondary side of the heat exchanger, and provides a heat source for the body to be heated to heat; the connecting structure is a threaded hole arranged on the hot end metal shell or the cold end metal shell; the cold end 1 is used as a cold source side and is used as a secondary side of the heat exchanger for conducting heat exchange between the body 100 to be cooled, and is used for cooling and reducing the temperature of objects or microenvironments to be cooled. In order to improve heat exchange efficiency, the hot end 4 and the cold end 1 are respectively provided with a heat exchange surface, the shape of the heat exchange surface can be a plane or a special-shaped surface, the shape of the heat exchange surface of the hot end 4 is matched with the shape of the contact surface (i.e. the heat exchange surface) of the body to be heated on the secondary side of the intermediate heat exchanger, and the shape of the heat exchange surface of the cold end 1 is matched with the shape of the contact surface (i.e. the heat exchange surface) of the body to be cooled 100 on the secondary side of the intermediate heat exchanger; the shape of the heat exchange surface can be specially designed, the design principle of the heat exchange surface is favorable for efficiently exchanging heat with the body to be heated or the body to be cooled 100, the heat exchange surface of the hot end 4 is in fit heat exchange with the heat exchange surface of the body to be heated, and the heat exchange surface of the cold end 1 is in fit heat exchange with the heat exchange surface of the body to be cooled 100. The hot end 4 heats the body to be heated and the cold end 1 cools the body to be cooled 100, or the hot end 4 is singly used to connect the body to be heated or the cold end 1 is connected with the body to be cooled 100 to exchange heat, and the corresponding other end directly exchanges heat with air.

In order to improve the universality of the intermediate heat exchanger, the metal shells of the cold end 1 and the hot end 4 are plate-shaped cuboid, the heat exchange surface of the cold end 1 is a plane, a connecting structure for connecting a body to be cooled 100 is arranged on the metal shell of the cold end 1, the simplest connecting structure is that a cold end threaded hole 11 is arranged on the metal shell, and the cold end 1 is fixedly connected to the body to be cooled 100 through the cold end threaded hole 11 and a cold end connecting screw 101 on the metal shell, as shown in fig. 2 and 4; the heat exchange surface of the heat end 1 is provided with a protruding heat dissipation flange 42 to increase the heat dissipation area of the heat exchange surface of the heat end 4, the metal shell of the heat end 4 is provided with a connection structure for connecting the body to be warmed, the connection structure is that the metal shell of the heat end 4 is provided with a heat end threaded hole 41, as shown in fig. 3, and the heat end 4 is fixedly connected to the body to be warmed through the heat end threaded hole 41 on the metal shell (not shown in the figure). The shapes of the cold end 1 and the hot end 4 are regular geometric bodies, so that the thermodynamic characteristics of the cold end 1 and the hot end 4 can be determined as long as the structural size is determined, a definite thermodynamic basis is provided for the design of the heat exchanger, and the heat exchanger is used as a refrigerating device in a small space environment, so that the heat exchanger is more suitable for mass and standardized production due to the fact that the cold end 1 and the hot end 4 are middle heat exchangers with regular platy cuboid structures, is convenient to design and use, and is more beneficial to application and popularization.

The intermediate heat exchanger is used as a component in the thermodynamic field, and the application of the intermediate heat exchanger can be developed secondarily according to the actual application scene so as to exert the maximum efficacy of the intermediate heat exchanger. According to the application scene, under the design thought that this patent provided, carry out the fine design to the heat exchange surface shape of hot junction 4 or cold junction 1 and with the connected mode of heat exchanger secondary side.

As shown in fig. 5 and fig. 6, which are just a design example aiming at the problem of cooling of micro-components, a protruding cold bin 12 is designed on the heat exchange surface of the cold end 1, heat absorption coils of the evaporator 9 are arranged at the bottom and in the surrounding side walls of the cold bin 12 to form a cold surface, a local low-temperature environment space is formed, the micro-miniature to-be-cooled body 100 (such as portable medicine, portable cosmetics and led PN junction to be cooled) to be cooled is directly placed in the cold bin 12, and the to-be-cooled body 100 is connected to the metal shell of the cold end 1 through a bearing support body, so that a better cooling effect is achieved. In the same way, a protruding heat bin is designed on the heat exchange surface of the hot end 4, the structure of the heat bin is similar to that of the cold bin 12, heat dissipation coils of the condenser 5 are arranged in the bottom and the surrounding side walls of the heat bin to form a heating surface, a local temperature-keeping and heating environment is formed, a microminiature body to be heated (a local heat-keeping object) which needs to be heated or warmed is directly arranged in the heat bin, and the body to be heated is connected to the metal shell of the hot end 4 through a bearing support body, so that a better heating and heat-keeping effect is realized.

Claims (9)

1. An embedded intermediate heat exchanger with vapor compression refrigeration heat pump, which is characterized in that: a hot end heat exchange surface is formed on the condenser side of the vapor compression refrigeration heat pump, and a cold end heat exchange surface is formed on the evaporator side of the vapor compression refrigeration heat pump; the cold end working surface of the intermediate heat exchanger is used as a primary side of the refrigeration heat exchanger to be developed and is matched with a secondary side of the refrigeration heat exchanger to be developed; the hot end working surface is used as the primary side of the heating heat exchanger to be developed and is matched with the secondary side of the heating heat exchanger to be developed.

2. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 1, wherein: the vapor compression refrigeration heat pump consists of a compressor (2), a condenser (5), an expansion valve (8) and an evaporator (9), wherein a vapor working medium sequentially passes through the evaporator (9), the compressor (2), the condenser (5) and the expansion valve (8) and then returns to the evaporator (9) to form refrigeration working medium circulation through connection of a hose (6), the condenser (5) is arranged in a metal shell with good heat conductivity and conducts heat with a partition wall of the metal shell to form a hot end (4) of an intermediate heat exchanger, and the evaporator (9) is arranged in another metal shell with good heat conductivity and conducts heat with the partition wall of the metal shell to form a cold end (1) of the intermediate heat exchanger; the cold end (1) is opposite to the hot end (4), the cold end (1) is rigidly connected with the hot end (4) through a connecting rod (3), and the compressor (2) is suspended between the cold end (1) and the hot end (4) through a plurality of tension springs (7); the hot end (4) and the cold end (1) are respectively provided with a heat exchange surface, the hot end heat exchange surface is in fit heat exchange with the body to be heated, and the cold end heat exchange surface is in fit heat exchange with the body to be cooled (100).

3. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: the metal shell of the cold end (1) is a platy cuboid, a connecting structure for connecting a body (100) to be cooled is arranged on the metal shell of the cold end (1), and the cold end heat exchange surface is a plane.

4. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: the metal shell of the hot end (4) is a platy cuboid, a connecting structure for connecting a body to be heated is arranged on the metal shell of the hot end (4), and a protruding radiating flange (42) is arranged on the hot end heat exchange surface.

5. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: the hot end (4) is connected to the to-be-heated body through a screw, and the shape of the hot end heat exchange surface is matched with the shape of the contact surface of the to-be-heated body; the cold end (1) is connected to the body (100) to be cooled through screws, and the shape of the cold end heat exchange surface is matched with the shape of the contact surface of the body (100) to be cooled.

6. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: the gap between the heat radiating coil of the condenser (5) and the metal shell of the hot end (4) is filled with heat conducting liquid or heat conducting paste, and the gap between the heat absorbing coil of the evaporator (9) and the metal shell of the cold end (1) is filled with heat conducting liquid or heat conducting paste.

7. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: a cold chamber (12) is formed on the heat exchange surface of the cold end (1), and a body (100) to be cooled is arranged in the cold chamber (12).

8. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: and a heat storage bin is formed on the heat exchange surface of the hot end (4), and a body to be heated is arranged in the heat storage bin.

9. An intermediate heat exchanger of an embedded self-contained vapor compression refrigeration heat pump as set forth in claim 2, wherein: the cold end (1) is used as a cold source and is used as a primary side of the refrigeration heat exchanger, the cold end (1) is fixedly connected to a secondary side of the refrigeration heat exchanger, and a secondary side heat exchange surface of the refrigeration heat exchanger is attached to a primary side heat exchange surface of the refrigeration heat exchanger for heat transfer; and the hot end (4) is used as a heat source and is used as a primary side of the heating heat exchanger, the hot end (4) is fixedly connected with a secondary side of the heating heat exchanger, and a secondary side heat exchange surface of the heating heat exchanger is in fit heat transfer with a primary side heat exchange surface of the heating heat exchanger.

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