CN212720509U

CN212720509U - Cooling system of freeze dryer

Info

Publication number: CN212720509U
Application number: CN202021414220.6U
Authority: CN
Inventors: 翁宽; 周飞跃
Original assignee: Truking Technology Ltd
Current assignee: Truking Technology Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-03-16
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a cooling system of freeze dryer, the freeze dryer includes the freeze dryer box, be provided with the freeze-drying sheet layer in the freeze dryer box, the freeze dryer box outside is provided with the box and presss from both sides the cover, the cooling system of freeze dryer includes box jacket valve, first change-over valve, second diverter valve, third diverter valve, sheet layer circulating pump, heater, sheet layer cooler, water chiller, cold trap circulating pump, cold trap jacket valve and cold trap cooler, the inside cold trap coil pipe that is provided with of cold trap, the cold trap outside is provided with the cold trap jacket, sheet layer circulating pump, heater, sheet layer cooler, freeze-drying sheet layer, box jacket valve, box jacket, cold trap cooler, cold trap coil pipe, cold trap jacket valve, cold trap jacket, water chiller, second diverter valve connect into the second return circuit. The cooling system of the freeze dryer aims at solving the technical problems that the energy consumption of the cooling system of the freeze dryer in the prior art is large and the temperature stress is large when the freeze dryer is cooled.

Description

Cooling system of freeze dryer

Technical Field

The utility model belongs to the refrigeration dryer cooling system field especially relates to a cooling system of freeze dryer.

Background

The freeze dryer needs cooling after high-temperature steam sterilization, the front box is cooled by jacket water generally, the silicone oil on the plate layer is cooled by a compressor, and the silicone oil on the plate layer is also cooled by water. The cold trap is cooled by a compressor. When the compressor is used for cooling, the load of the compressor is high, the requirement on circulating cooling water is strict, and the compressor can be damaged by carelessness. The box body, the cold trap, the plate layer and the like of the freeze dryer have more heat during high-temperature sterilization, and the loss of electric quantity is large and the temperature stress of the freeze dryer during cooling is large by using a compressor for refrigeration.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Based on this, the utility model provides a cooling system of freeze dryer, the cooling system of this freeze dryer aim at solving the big technical problem that temperature stress is big when the freeze dryer cooling system energy resource consumption among the prior art is big and the freeze dryer cooling.

(II) technical scheme

In order to solve the technical problem, the utility model provides a cooling system of freeze dryer, wherein, the freeze dryer includes the freeze dryer box, be provided with the freeze-drying sheet layer in the freeze dryer box, the freeze dryer box outside is provided with the box and presss from both sides the cover, the cooling system of freeze dryer includes box clamp sleeve valve, first change valve, second diverter valve, third diverter valve, sheet layer circulating pump, heater, sheet layer cooler, water chiller, cold trap circulating pump, cold trap clamp sleeve valve and cold trap cooler, the inside cold trap coil pipe that is provided with of cold trap, the cold trap outside is provided with the cold trap and presss from both sides the cover, circulating pump, heater, sheet layer cooler, freeze-drying sheet layer, first change valve connect into first return circuit through the pipeline, sheet layer circulating pump, heater, sheet layer cooler, freeze-drying sheet layer, box clamp sleeve valve, box clamp sleeve, The cold trap circulating pump, the cold trap cooler, the cold trap coil pipe and the third switching valve are connected into a third loop through pipelines.

Preferably, the cooling system of the freeze dryer comprises a fourth switching valve, through which the first and third circuits are connected.

Preferably, a check valve is further arranged on the third loop, an inlet of the check valve is connected with the cold trap circulating pump, and an outlet of the check valve is connected with the cold trap cooler.

Preferably, the water cooler is connected to a source of aqueous medium.

Preferably, the slab cooler is connected to a source of freon medium.

Preferably, the box body jacket valve, the first switching valve, the second switching valve, the third switching valve and the fourth switching valve are respectively electric control valves.

Preferably, the plate layer circulating pump is a silicone oil circulating pump.

Preferably, a pipeline between the water cooler and the second switching valve is connected to a pipeline between the first switching valve and the slab circulating pump through a bypass pipeline, and the bypass pipeline is connected with an expansion tank.

Preferably, the slab circulating pump, the heater, the slab cooler, the freeze-drying slab layer and the first switching valve are sequentially connected into the first loop through pipelines, the slab circulating pump, the heater, the slab cooler, the freeze-drying slab layer, the box jacket valve, the box jacket, the cold trap cooler, the cold trap coil, the cold trap jacket valve, the cold trap jacket, the water cooler and the second switching valve are sequentially connected into the second loop through pipelines, and the cold trap circulating pump, the cold trap cooler, the cold trap coil and the third switching valve are sequentially connected into the third loop through pipelines.

(III) advantageous effects

The utility model discloses compare with prior art, the utility model discloses freeze dryer's cooling system's beneficial effect includes:

the water cooler can cool the box body, the plate layer, the cold trap and the coil pipe in the cold trap of the freeze dryer at the same time. Can effectively avoid the influence of local high temperature on the product quality after high-temperature sterilization. The box body, the cold trap, the plate layer and the like of the freeze dryer have more heat during high-temperature sterilization, the loss of electric quantity is large by using a compressor for refrigeration, and the water cooler reduces energy consumption compared with the compressor for refrigeration. In addition, the cooling flexibility of the freeze dryer is increased, the temperature stress of the freeze dryer during cooling is reduced, and the working temperature difference of the silicon oil cooler is reduced, so that the silicon oil leakage risk is reduced.

Drawings

The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:

fig. 1 is a schematic diagram of a cooling system of a freeze dryer according to an embodiment of the present invention.

Description of reference numerals:

the device comprises a freeze dryer box body 1, a freeze drying plate layer 2, a box body jacket 3, a box body jacket 4, a box body jacket valve 5, a first switching valve 6, a fourth switching valve 7, a second switching valve 7, a third switching valve 8, a plate layer circulating pump 9, a heater 10, a plate layer cooler 11, a water cooler 12, a cold trap 13, a cold trap circulating pump 14, a cold trap cooler 15, a cold trap coil 16, a cold trap jacket 17, a cold trap jacket 18, a check valve 19, a bypass pipeline 20 and an expansion tank 21.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

Referring to fig. 1, the utility model provides a cooling system of freeze dryer, the freeze dryer includes freeze dryer box 1, be provided with freeze-drying plate layer 2 in the freeze dryer box 1, the freeze dryer box 1 outside is provided with box jacket 3, the cooling system of freeze dryer includes box jacket valve 4, first change valve 5, second change valve 7, third change valve 8, plate layer circulating pump 9, heater 10, plate layer cooler 11, water cooler 12, cold trap 13, cold trap circulating pump 14, cold trap jacket valve 18 and cold trap cooler 15, the inside cold trap coil pipe 16 that is provided with of cold trap 13, the cold trap 13 outside is provided with cold trap jacket 17, plate layer circulating pump 9 is the silicon oil circulating pump, plate layer circulating pump 9, heater 10, plate layer cooler 11, freeze-drying plate layer 2, first change valve 5 connects gradually into first return circuit through the pipeline, plate layer circulating pump 9, heater 10, plate layer cooler 11, The freeze-drying plate layer 2, the box body jacket valve 4, the box body jacket 3, the cold trap cooler 15, the cold trap coil pipe 16, the cold trap jacket valve 18, the cold trap jacket 17, the water cooler 12 and the second switching valve 7 are sequentially connected into a second loop for reducing temperature stress through pipelines, the cold trap circulating pump 14, the cold trap cooler 15, the cold trap coil pipe 16 and the third switching valve 8 are sequentially connected into a third loop through pipelines, of course, under appropriate conditions, the sequence of related parts can be adjusted, for example, the sequence of the plate layer circulating pump 9, the heater 10 and the plate layer cooler 11 in the related loops can be completely adjusted. After the freeze dryer is sterilized by high-temperature steam, the plate layer circulating pump 9 is started, the internal heat-conducting medium silicon oil flows through the second loop, and the cooling water supply of the water cooler 12 is started, so that the purpose of a cooling system can be achieved, and the temperature stress of the freeze dryer during cooling is effectively reduced. When the freeze-drying plate layer 2 needs low temperature, the plate layer circulating pump 9 is started, the internal heat-conducting medium silicone oil flows through the first loop, and the plate layer cooler 11 is started to cool the freeze-drying plate layer 2 at low temperature; when the cold trap 13 needs low temperature, the cold trap circulating pump 14 is started, the internal heat-conducting medium silicon oil flows through the third loop, and the cold trap cooler 15 is started to cool the cold trap 13 at low temperature. The design can effectively avoid the water cooler 12 from being lower than 0 ℃, thereby effectively avoiding the risk of low-temperature freezing damage of the water cooler 12.

According to the preferred embodiment of the present invention, the cooling system of the freeze dryer includes the fourth switching valve 6, and the first circuit and the third circuit are connected by the fourth switching valve 6, so that the pre-cooling process can be performed before the actual production of the freeze dryer.

In addition, a check valve 19 is arranged on the third loop, the inlet of the check valve 19 is connected with the cold trap circulating pump 14, and the outlet of the check valve 19 is connected with the cold trap cooler 15. The water cooler 12 is connected to a source of aqueous medium. The slab cooler 11 is connected to a source of freon media.

According to the utility model discloses a preferred embodiment, box clamp sleeve valve 4, first diverter valve 5, second diverter valve 7, third diverter valve 8, fourth diverter valve 6 are the automatically controlled valve respectively, make things convenient for automated control. The line between the water cooler 12 and the second switching valve 7 is connected to the line between the first switching valve 5 and the floor circulation pump 9 through a bypass line 20, and the bypass line 20 is connected to an expansion tank 21 to compensate for thermal expansion of the fluid due to temperature rise.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. The cooling system of the freeze dryer is characterized by comprising a freeze dryer box body (1), wherein a freeze drying plate layer (2) is arranged in the freeze dryer box body (1), a box jacket (3) is arranged on the outer side of the freeze dryer box body (1), the cooling system of the freeze dryer comprises a box jacket valve (4), a first switching valve (5), a second switching valve (7), a third switching valve (8), a plate layer circulating pump (9), a heater (10), a plate layer cooler (11), a water cooler (12), a cold trap (13), a cold trap circulating pump (14), a cold trap jacket valve (18) and a cold trap cooler (15), a cold trap coil pipe (16) is arranged inside the cold trap (13), a cold trap jacket (17) is arranged on the outer side of the cold trap (13), and the plate layer circulating pump (9), the heater (10), the plate layer cooler (11), Freeze-drying plate layer (2), first switching valve (5) connect into first return circuit through the pipeline, plate layer circulating pump (9), heater (10), plate layer cooler (11), freeze-drying plate layer (2), box press from both sides sleeve valve (4), box press from both sides cover (3), cold trap cooler (15), cold trap coil pipe (16), cold trap press from both sides sleeve valve (18), cold trap press from both sides cover (17), water cooler (12), second switching valve (7) connect into the second return circuit that is used for reducing temperature stress through the pipeline, cold trap circulating pump (14), cold trap cooler (15), cold trap coil pipe (16), third switching valve (8) connect into the third return circuit through the pipeline.

2. The cooling system of a freeze dryer according to claim 1, characterized in that it comprises a fourth switching valve (6), the first and third circuits being connected by the fourth switching valve (6).

3. The cooling system of the freeze dryer according to claim 1, wherein a check valve (19) is further disposed on the third circuit, an inlet of the check valve (19) is connected to the cold trap circulating pump (14), and an outlet of the check valve (19) is connected to the cold trap cooler (15).

4. The cooling system of a freeze dryer according to claim 1, wherein the water cooler (12) is connected to a source of aqueous medium.

5. The cooling system of a freeze dryer according to claim 1, characterized in that the plate cooler (11) is connected to a freon medium source.

6. The cooling system of a freeze dryer according to any one of claims 1 to 5, characterized in that the box jacket valve (4), the first switching valve (5), the second switching valve (7), the third switching valve (8) and the fourth switching valve (6) are electrically controlled valves, respectively.

7. The cooling system of a freeze dryer according to any one of claims 1 to 5, characterized in that the lamellar circulation pump (9) is a silicone oil circulation pump.

8. The cooling system of a freeze dryer according to any one of claims 1 to 5, characterized in that the line between the water cooler (12) and the second switching valve (7) is connected to the line between the first switching valve (5) and the lamellar circulating pump (9) by a bypass line (20), the bypass line (20) being connected to an expansion tank (21).

9. The cooling system of a freeze dryer according to any one of claims 1 to 5, the plate layer circulating pump (9), the heater (10), the plate layer cooler (11), the freeze-drying plate layer (2) and the first switching valve (5) are sequentially connected into the first loop through pipelines, the slab circulating pump (9), the heater (10), the slab cooler (11), the freeze-drying slab (2), the box body jacket valve (4), the box body jacket (3), the cold trap cooler (15), the cold trap coil pipe (16), the cold trap jacket valve (18), the cold trap jacket (17), the water cooler (12) and the second switching valve (7) are connected in sequence through pipelines to form the second loop, and the cold trap circulating pump (14), the cold trap cooler (15), the cold trap coil pipe (16) and the third switching valve (8) are sequentially connected into the third loop through pipelines.