CN216159707U

CN216159707U - Phase change heat exchanger for vaccine cold storage and insulation box

Info

Publication number: CN216159707U
Application number: CN202122154208.7U
Authority: CN
Inventors: 李跃
Original assignee: Suzhou Fuenthe Energy Saving Technology Co ltd; Shanghai University of Engineering Science
Current assignee: Suzhou Fuenthe Energy Saving Technology Co ltd; Shanghai University of Engineering Science
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-04-01
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a phase change heat exchanger for a vaccine refrigeration and insulation box, relates to the field of medicine storage and transportation, and aims to solve the problem that the extremely low temperature of-70 ℃ is commonly stored in a research laboratory, but the current domestic current has no ready capability of reaching the condition of-70 ℃ in the transportation and connection processes, and the key points of the technical scheme are as follows: the condenser comprises a condensation end and an evaporation end, wherein the condensation end and the evaporation end form a closed loop, a refrigerant is filled in the closed loop, and when temperature difference exists between the condensation end and the evaporation end, the refrigerant is evaporated at the evaporation end and condensed at the condensation end. The utility model can ensure that the heat exchange efficiency is higher when the heat exchange is carried out, and the heat exchange device is fully contacted with a heat-exchanged object.

Description

Phase change heat exchanger for vaccine cold storage and insulation box

Technical Field

The utility model relates to the field of medicine storage and transportation, in particular to a phase change heat exchanger for a vaccine refrigeration and insulation box.

Background

Due to the characteristics of mRNA vaccines, ultra-low temperature environments are required for their storage and transport. According to the current research, the parishin corona mRNA vaccine can be stored for 6 months in an ultralow temperature freezer at-70 ℃, can be stored for 15 days in a parishin special heat preservation transport box continuously added with dry ice, and can be stored for only 5 days in a normal hospital refrigerator at 2-8 ℃.

If the vaccine is transported to all parts of the world, the storage, transportation and inoculation processes of the vaccine must be ensured to be carried out under the condition of a specified and constant refrigeration temperature, the extremely low temperature of-70 ℃ is commonly stored in a research laboratory, but the transportation and connection processes have no ready capability of reaching the condition of-70 ℃ at present at home.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a phase change heat exchanger for a vaccine refrigeration and insulation box, which has high heat exchange efficiency during heat exchange and is fully contacted with a heat-exchanged object.

The technical purpose of the utility model is realized by the following technical scheme: the phase change heat exchanger for the vaccine refrigeration and insulation box comprises a condensation end and an evaporation end, wherein the condensation end and the evaporation end form a closed loop, a refrigerant is filled in the closed loop, and when temperature difference exists between the condensation end and the evaporation end, the refrigerant is evaporated at the evaporation end and condensed at the condensation end.

Through adopting above-mentioned technical scheme, when this heat exchanger need carry out the heat transfer, only need to make and have the difference in temperature between condensation end and the evaporation end, and when the temperature of condensation end department will be less than the liquefaction temperature of refrigerant, the temperature of being cooled down the object is greater than the liquefaction temperature of refrigerant, thereby make the refrigerant carry out the heat exchange at evaporation end department, thereby the evaporation is endothermic, and flow into the condensation of cooling down in the condensation end, then the refrigerant resumes liquid once more, and then flow into in the evaporation end, the refrigerant so reciprocal, thereby carry out the heat exchange cooling to being cooled down the object.

The utility model is further configured to: the condensation end comprises a steam pipe communicated with the outflow direction of the evaporation end and a liquid pipe communicated with the steam pipe, and the other end of the liquid pipe is communicated with the inflow direction of the evaporation end.

Through adopting above-mentioned technical scheme, through setting up steam pipe and liquid pipe to make when the refrigerant needs to flow in the condensation end, only need make the refrigerant obtain the cooling condensation through the juncture of steam pipe and liquid pipe and can make the refrigerant flow in the liquid pipe.

The utility model is further configured to: the liquid pipe and the steam pipe are communicated through a U-shaped bent pipe.

Through adopting above-mentioned technical scheme, through setting up U type return bend to make when the refrigerant between liquid pipe and steam pipe, can make U type return bend department make the refrigerant have sufficient route to cool down.

The utility model is further configured to: the evaporation end comprises a steam collecting pipe communicated with the inflow direction of the condensation end and a liquid collecting pipe communicated with the outflow direction of the condensation end, and the steam collecting pipe is communicated with the other end of the liquid collecting pipe.

Through adopting above-mentioned technical scheme, through setting up vapour pressure manifold and liquid pressure manifold to can assemble vapour refrigerant through vapour pressure manifold when making the refrigerant evaporation, make it move towards the condensation end, then the refrigerant after condensation liquefaction at the condensation end, can flow into in the liquid pressure manifold through the dead weight and assemble, make the refrigerant obtain abundant circulation.

The utility model is further configured to: the steam collecting pipe is communicated with the liquid collecting pipe through a plurality of flat pipes.

Through adopting above-mentioned technical scheme, through setting up flat pipe to make it can play the excessive effect of vapour pressure manifold and liquid pressure manifold, make the refrigerant can fully carry out the heat exchange by the cooling thing with the external world in flat intraductal.

The utility model is further configured to: one side of the flat pipe in the vertical direction is tangent to the peripheral walls of the steam collecting pipe and the liquid collecting pipe.

Through adopting above-mentioned technical scheme, because one side of the vertical direction of flat pipe is tangent with the periphery wall of vapour pressure manifold and liquid pressure manifold to make flat pipe can have great area of contact when with by the contact of cooling thing, can not lead to the condition emergence that flat pipe can't contact with by the cooling thing because the pipe diameter of vapour pressure manifold and liquid pressure manifold.

The utility model is further configured to: the flat pipe comprises a straight pipe part and bending parts positioned at two ends of the straight pipe part, and the two bending parts are respectively communicated with the liquid collecting pipe and the steam collecting pipe.

The utility model is further configured to: the flat pipe is internally provided with a plurality of channels which are arranged along the width direction of the flat pipe in an array mode, and the length direction of the channels is the same as that of the flat pipe, and two ends of each channel penetrate through two ends of the flat pipe.

In conclusion, the utility model has the following beneficial effects:

when this heat exchanger need carry out the heat transfer, only need to make and have the difference in temperature between condensation end and the evaporation end, and when the temperature of condensation end department will be less than the condensation point of refrigerant, the temperature of being cooled down the object is greater than the condensation point of refrigerant, thereby make the refrigerant carry out the heat exchange at the evaporation end department, thereby the evaporation heat absorption, and flow into the condensation of cooling down in the condensation end, then the refrigerant resumes liquid once more, and then flow into in the evaporation end, the refrigerant is so reciprocal, thereby carry out the heat exchange cooling to being cooled down the object.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a schematic structural view of a flat tube according to the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a cross-sectional view of a flat tube according to the present invention;

fig. 6 is an enlarged view at B in fig. 5.

In the figure: 1. a liquid collecting pipe; 2. a steam collecting pipe; 3. flat tubes; 31. a straight tube portion; 32. a bending section; 33. a channel; 4. a liquid pipe; 5. a steam pipe; 6. a U-shaped bent pipe.

Detailed Description

The utility model is described in detail below with reference to the figures and examples.

Example (b):

a phase change heat exchanger for a vaccine refrigeration and insulation box comprises a condensation end and an evaporation end, wherein the condensation end and the evaporation end form a closed loop, a refrigerant is filled in the closed loop, and when temperature difference exists between the condensation end and the evaporation end, the refrigerant is evaporated at the evaporation end and condensed at the condensation end.

As shown in fig. 1 and 2, the condensation end includes a steam pipe 5 communicated with the outflow direction of the evaporation end and a liquid pipe 4 communicated with the steam pipe 5 through a U-shaped bent pipe 6, the other end of the liquid pipe 4 is communicated with the inflow direction of the evaporation end, the evaporation end includes a steam collecting pipe 2 communicated with the inflow direction of the condensation end and a liquid collecting pipe 1 communicated with the outflow direction of the condensation end, the steam collecting pipe 2 is communicated with the other end of the liquid collecting pipe 1 through a plurality of flat pipes 3, and one side of the vertical direction of the flat pipes 3 is tangent to the peripheral wall of the steam collecting pipe 2 and the liquid collecting pipe 1.

Through setting up condensation end and evaporating end, thereby make the refrigerant flow in steam pipe 5 through flat pipe 3 in liquid pipe 4 in the time, can make the refrigerant carry out the heat exchange with the object that needs the cooling, thereby make the refrigerant can be in flat pipe 3 internal heat absorption and evaporation, make it become the steam state, and under the guide effect of steam pipe 5, the refrigerant of steam state can move condensation end department and cool down, the state of liquid is resumeed in the refrigerant cooling back condensation of steam state afterwards, and under its dead weight effect downflow, reentrant in liquid pipe 4 again, finally repeat whole flow.

As shown in fig. 3-6, the flat tube 3 includes a straight tube portion 31 and bent portions 32 at two ends of the straight tube portion, the bent portions 32 are formed by a bending process, the two bent portions 32 are respectively communicated with the liquid collecting tube 1 and the vapor collecting tube 2 and are connected by a brazing welding process, a plurality of channels 33 are formed in the flat tube 3 and are arranged in an array along a width direction of the flat tube 3, and length directions of the channels 33 are the same as length directions of the flat tube 3, two ends of each channel 33 penetrate through two ends of the flat tube 3, a space of each channel 33 is 1-2mm, and a cross-sectional shape of each channel 33 can be a circular shape or a rectangular shape.

Because flat pipe 3 is the platykurtic, thereby make it can be in the time of the object contact with needs cooling, can ensure that it has great area of contact, and then further strengthen the heat conductivility between this heat exchanger and the object that needs the cooling, thereby make the object can realize the cooling fast, simultaneously because the cross sectional shape setting of passageway 33, make passageway 33 can reduce the content, thereby reduce the inside refrigerant use amount of heat exchanger, can utilize a small amount of refrigerant to realize better refrigeration effect, and the heat exchanger itself has better heat exchange efficiency.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The phase change heat exchanger for the vaccine refrigeration and insulation box is characterized in that: including condensation end and evaporating end, condensation end and evaporating end constitute a closed circuit, the closed circuit intussuseption is filled with the refrigerant, works as when there is the difference in temperature between condensation end and the evaporating end, the refrigerant evaporates and condenses at the condensation end at the evaporating end, the condensation end includes steam pipe (5) with the outflow direction intercommunication of evaporating end and liquid pipe (4) with steam pipe (5) intercommunication, the other end of liquid pipe (4) and the inflow direction intercommunication of evaporating end, the evaporating end includes steam pressure manifold (2) with the inflow direction intercommunication of condensation end and liquid pressure manifold (1) with the outflow direction intercommunication of condensing end, steam pressure manifold (2) and the other end intercommunication of liquid pressure manifold (1).

2. The phase change heat exchanger for a vaccine cold storage and warm preservation box according to claim 1, characterized in that: the liquid pipe (4) is communicated with the steam pipe (5) through a U-shaped bent pipe (6).

3. The phase change heat exchanger for a vaccine cold storage and warm preservation box according to claim 1, characterized in that: the steam collecting pipe (2) is communicated with the liquid collecting pipe (1) through a plurality of flat pipes (3).

4. The phase change heat exchanger for a vaccine cold storage and warm preservation box according to claim 3, characterized in that: one side of the flat pipe (3) in the vertical direction is tangent to the peripheral walls of the steam collecting pipe (2) and the liquid collecting pipe (1).

5. A phase change heat exchanger for a vaccine cold storage and warm storage tank according to claim 3 or 4, wherein: the flat pipe (3) comprises a straight pipe part (31) and bending parts (32) positioned at two ends of the straight pipe part, and the bending parts (32) are respectively communicated with the liquid collecting pipe (1) and the steam collecting pipe (2).

6. The phase change heat exchanger for a vaccine cold storage and warm preservation box according to claim 5, characterized in that: a plurality of channels (33) which are arranged in an array mode along the width direction of the flat tubes (3) and have the length direction identical to that of the flat tubes (3) are arranged in the flat tubes (3), and two ends of each channel (33) penetrate through two ends of each flat tube (3).