CN211261490U - Cold trap of household freeze dryer - Google Patents

Abstract

The utility model discloses a domestic freeze dryer cold-trap belongs to cold-trap technical field. The cold-trap includes the barrel, and the even winding in outside of barrel has the coil pipe, and the coil pipe includes refrigeration coil pipe one, refrigeration coil pipe two and heating coil pipe, heating coil pipe is located the opening part of barrel, and refrigeration coil pipe one is located between refrigeration coil pipe two and heating coil pipe. An air inlet pipe and an air outlet pipe are arranged at two ends of the heating coil and are connected with a heating device. The two ends of the first refrigerating coil pipe are respectively provided with a first liquid inlet pipe and a first liquid outlet pipe, the two ends of the second refrigerating coil pipe are respectively provided with a second liquid inlet pipe and a second liquid outlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are respectively communicated with the liquid outlet end of the refrigerating unit, and the first liquid outlet pipe and the second liquid outlet pipe are both communicated with a compressor of the refrigerating unit through connecting pipes. The utility model adopts the above structure domestic freeze dryer cold trap can solve current freeze dryer door and easily frost, the inhomogeneous problem of cold trap water catch.

Description

Cold trap of household freeze dryer

Technical Field

The utility model belongs to the technical field of the cold-trap structure technique and specifically relates to a domestic freeze dryer cold-trap is related to.

Background

A freeze dryer is a method of freezing a water-containing substance into a solid state and then sublimating water from the solid state into a gaseous state to remove water and preserve the substance. The freeze dryer is dried at low temperature, does not deform protein, but can lose biological activity of microorganisms and the like, and is particularly suitable for bioactive products, biochemical products, genetic engineering products, blood products and the like with poor thermal stability.

The freeze dryer comprises a freeze drying bin and a cold trap, wherein the freeze drying bin is used for containing materials, and the cold trap is used for capturing water vapor generated during water sublimation in the materials of the freeze drying bin. The coil pipe outside the existing cold trap is formed by winding a whole copper pipe, after a refrigerant in a refrigerating device enters the coil pipe, the temperature of the refrigerant is higher and higher along with the flowing heat exchange of the refrigerant in the coil pipe, so that the water trapping effect at the rear end of the coil pipe is poor, and the cold trap traps water unevenly. In addition, the freeze-drying bin is positioned in the barrel body of the cold trap, a bin door of the freeze dryer is arranged at the opening of the barrel body, and the bin door is used for sealing the opening of the barrel body. In the freeze-drying process, moisture in the freeze-drying bin can be attached to the bin gate, so that the bin gate frosts, and the freeze-drying condition in the freeze-drying bin can not be clearly observed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a domestic freeze dryer cold trap solves current freeze dryer door and easily frosts, the inhomogeneous problem of cold trap water catch.

In order to achieve the purpose, the utility model provides a cold trap of a household freeze dryer, which comprises a cylinder body, wherein a coil is uniformly wound outside the cylinder body, the coil comprises a first refrigeration coil, a second refrigeration coil and a heating coil, the heating coil is positioned at the opening of the cylinder body, and the first refrigeration coil is positioned between the second refrigeration coil and the heating coil;

an air inlet pipe and an air outlet pipe are arranged at two ends of the heating coil and are connected with a heating device;

the two ends of the first refrigerating coil pipe are respectively provided with a first liquid inlet pipe and a first liquid outlet pipe, the two ends of the second refrigerating coil pipe are respectively provided with a second liquid inlet pipe and a second liquid outlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are respectively communicated with the liquid outlet end of the refrigerating unit, and the first liquid outlet pipe and the second liquid outlet pipe are both communicated with a compressor of the refrigerating unit through connecting pipes.

Preferably, the heating device is a refrigeration unit, the air inlet pipe is communicated with a compressor of the refrigeration unit through a connecting pipe, and the air outlet pipe is communicated with a condenser of the refrigeration unit.

Preferably, the inside of barrel is provided with the baffle of placing the material, connects into a whole through the connecting rod between the baffle, and the connecting rod is fixed on the inside of barrel, and the both sides of baffle are provided with the division board, and the division board is fixed on the inner wall of barrel, forms between the inner wall of division board and barrel and catches the water district, forms the freeze-drying district between two division boards, and the even air vent that is provided with a plurality of intercommunication on the division board and catches water district and freeze-drying district.

Preferably, the side wall of the cylinder body is provided with an installation pipe for installing a temperature sensor and a vacuum degree sensor, the side wall of the cylinder body is provided with a vacuumizing pipe, the vacuumizing pipe is connected with an external vacuum pump, and the bottom of the cylinder body is provided with a drain pipe; the vacuum-pumping pipe and the drain pipe are both communicated with the water catching area.

Preferably, the heating coil, the first refrigeration coil and the second refrigeration coil are all formed by winding copper pipes, the heating coil comprises two circles of copper pipes, and the winding lengths of the first refrigeration coil and the second refrigeration coil on the cylinder body are equal.

The utility model adopts the above structure domestic freeze dryer cold trap can solve current freeze dryer door and easily frost, the inhomogeneous problem of cold trap water catch.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a cold trap of a domestic freeze dryer of the present invention;

fig. 2 is a schematic front view of an embodiment of a cold trap of a domestic freeze dryer of the present invention;

fig. 3 is a left side view schematic structure diagram of an embodiment of a cold trap of a domestic freeze dryer of the present invention;

fig. 4 is a schematic top view of the cold trap of the domestic freeze dryer according to the embodiment of the present invention.

Reference numerals

1. A barrel; 2. a partition plate; 3. a separator plate; 4. a connecting rod; 5. a vent hole; 6. a support; 7. installing a pipe; 8. vacuumizing a tube; 9. a drain pipe; 10. an air inlet pipe; 11. an air outlet pipe; 12. a liquid inlet pipe I; 13. a first liquid outlet pipe; 14. a liquid inlet pipe II; 15. a second liquid outlet pipe; 16. a heating coil; 17. a first refrigerating coil pipe; 18. and a second refrigerating coil.

Detailed Description

Examples

Fig. 1 is the utility model relates to a structural schematic diagram of domestic freeze dryer cold-trap embodiment, fig. 2 is the utility model relates to a structural schematic diagram is looked forward to the front of domestic freeze dryer cold-trap embodiment, fig. 3 is the utility model relates to a structural schematic diagram is looked to the left side of domestic freeze dryer cold-trap embodiment, fig. 4 is the utility model relates to a structural schematic diagram is overlooked to domestic freeze dryer cold-trap embodiment. As shown in the figure, a domestic freeze dryer cold trap, includingbarrel 1,barrel 1 is stainless steel, avoids causing the pollution to the material. The bottom ofbarrel 1 is provided withsupport 6, andbarrel 1 passes throughsupport 6 to be fixed in the inside of freeze dryer box.

The outside of thebarrel 1 is uniformly wound with coils, and the coils comprise afirst refrigeration coil 17, asecond refrigeration coil 18 and aheating coil 16. Theheating coil 16 is positioned at the opening of thebarrel 1, and thefirst refrigeration coil 17 is positioned between thesecond refrigeration coil 18 and theheating coil 16. Theheating coil 16, the first refrigeratingcoil 17 and the second refrigeratingcoil 18 are all formed by winding copper pipes, theheating coil 16 comprises two circles of copper pipes, and the winding lengths of the first refrigeratingcoil 17 and the second refrigeratingcoil 18 on thecylinder body 1 are equal.

Anair inlet pipe 10 and anair outlet pipe 11 are arranged at two ends of theheating coil 16, and theair inlet pipe 10 and theair outlet pipe 11 are connected with a heating device.Heating coil 16 heats the opening part ofbarrel 1, improves the temperature ofbarrel 1 opening part, avoids steam to condense into frost on the door, the effectual problem that solves the door and frost. The heating device may be an existing heating structure to heat theheating coil 16. Heating device chooses the refrigeration unit of freeze dryer for use in this embodiment, the refrigeration unit of freeze dryer chooses current structure for use, generally include compressor and condenser through the connecting pipe intercommunication, high temperature high pressure refrigerant after the compressor compression enters into cold trap or freeze-drying storehouse through the connecting pipe after the heat transfer in the condenser in, be provided with the expansion valve or the capillary of throttle on the connecting pipe in condenser and cold trap or freeze-drying storehouse, the structure of refrigeration unit is not the focus of this application, no longer gives unnecessary details here. Theair inlet pipe 10 is communicated with a compressor of the refrigeration unit through a connecting pipe, and theair outlet pipe 11 is communicated with a condenser of the refrigeration unit. The high-temperature and high-pressure gaseous refrigerant generated by the compressor enters theheating coil 16 through the connection pipe, and heats theheating coil 16. Theheating coil 16 in this embodiment effectively utilizes the heat generated by the compressor of the refrigeration unit of the freeze dryer, avoids adding a new heating device, simplifies the structure, and reduces the energy consumption.

The two ends of the first refrigeratingcoil 17 are respectively provided with a firstliquid inlet pipe 12 and a firstliquid outlet pipe 13, the two ends of the second refrigeratingcoil 18 are respectively provided with a secondliquid inlet pipe 14 and a secondliquid outlet pipe 15, the firstliquid inlet pipe 12 and the secondliquid inlet pipe 14 are respectively communicated with the liquid outlet end of the refrigerating unit, and the firstliquid outlet pipe 13 and the secondliquid outlet pipe 15 are respectively communicated with a compressor of the refrigerating unit through connecting pipes. The refrigerant condensed by the condenser is throttled by an expansion valve or a capillary tube and then enters the first refrigeratingcoil 17 and the second refrigeratingcoil 18 through the firstliquid inlet pipe 12 and the secondliquid inlet pipe 14 respectively, the first refrigeratingcoil 17 and the second refrigeratingcoil 18 are cooled respectively, thebarrel 1 is divided into two parts for cooling simultaneously, the uniformity of the temperature of the cold trap is improved, and the water catching effect and the water catching uniformity are improved.

The inside ofbarrel 1 is provided with thebaffle 2 of placing the material, connects into a whole through connectingrod 4 between thebaffle 2, and connectingrod 4 welding or spiro union are fixed on the inside ofbarrel 1. The two sides of thepartition board 2 are provided with partition boards 3, and the partition boards 3 are fixed on the inner wall of thecylinder body 1. Form between division board 3 and the inner wall ofbarrel 1 and catch the water district, form the freeze-drying district between two division boards 3,baffle 2 sets up in the freeze-drying district. Even being provided with a plurality of intercommunication on division board 3 and catching water area and freeze the air vent 5 in the district, the steam in the freeze-drying district enters into through air vent 5 and catches in the water area.

The side wall of thecylinder body 1 is provided with aninstallation pipe 7 for installing a temperature sensor and a vacuum degree sensor. The side wall of thecylinder body 1 is provided with avacuum tube 8, and thevacuum tube 8 is connected with an external vacuum pump. The bottom of thecartridge 1 is provided with adrain 9 for draining the captured water out of the freeze dryer. The vacuum-pumpingpipe 8 and thewater discharge pipe 9 are both communicated with the water catching area.

The utility model adopts the above structure domestic freeze dryer cold trap can solve current freeze dryer door and easily frost, the inhomogeneous problem of cold trap water catch.

The above are specific embodiments of the present invention, but the scope of protection of the present invention should not be limited thereto. Any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention are covered by the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the claims.

Claims (5)

1. A domestic freeze dryer cold trap which characterized in that: the cooling device comprises a barrel, wherein a coil is uniformly wound outside the barrel and comprises a first refrigeration coil, a second refrigeration coil and a heating coil, the heating coil is positioned at an opening of the barrel, and the first refrigeration coil is positioned between the second refrigeration coil and the heating coil;

an air inlet pipe and an air outlet pipe are arranged at two ends of the heating coil and are connected with a heating device;

the two ends of the first refrigerating coil pipe are respectively provided with a first liquid inlet pipe and a first liquid outlet pipe, the two ends of the second refrigerating coil pipe are respectively provided with a second liquid inlet pipe and a second liquid outlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are respectively communicated with the liquid outlet end of the refrigerating unit, and the first liquid outlet pipe and the second liquid outlet pipe are both communicated with a compressor of the refrigerating unit through connecting pipes.

2. A domestic freeze dryer cold trap according to claim 1, wherein: the heating device is a refrigerating unit, the air inlet pipe is communicated with a compressor of the refrigerating unit through a connecting pipe, and the air outlet pipe is communicated with a condenser of the refrigerating unit.

3. A domestic freeze dryer cold trap according to claim 1, wherein: the inside of barrel is provided with the baffle of placing the material, connects into a whole through the connecting rod between the baffle, and the connecting rod is fixed on the inside of barrel, and the both sides of baffle are provided with the division board, and the division board is fixed on the inner wall of barrel, forms between the inner wall of division board and barrel and catches the water district, forms the freeze-drying district between two division boards, and the even air vent that is provided with a plurality of intercommunication on the division board and catches water district and freeze-drying district.

4. A domestic freeze dryer cold trap according to claim 3, wherein: the side wall of the cylinder body is provided with an installation pipe for installing a temperature sensor and a vacuum degree sensor, the side wall of the cylinder body is provided with a vacuumizing pipe, the vacuumizing pipe is connected with an external vacuum pump, and the bottom of the cylinder body is provided with a drain pipe; the vacuum-pumping pipe and the drain pipe are both communicated with the water catching area.

5. A domestic freeze dryer cold trap according to claim 1, wherein: the heating coil, the first refrigeration coil and the second refrigeration coil are all formed by winding copper pipes, the heating coil comprises two circles of copper pipes, and the winding lengths of the first refrigeration coil and the second refrigeration coil on the cylinder body are equal.

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