Heat exchange structure for freeze-drying bin

Abstract

The heat exchange structure for the freeze-drying bin relates to the field of freeze-drying bins and comprises the freeze-drying bin, a water storage tank is arranged on the right side wall of the freeze-drying bin, a self-priming pump is arranged on the bottom wall of the water storage tank, and a cold trap device is arranged on the inner wall of the freeze-drying bin. According to the scheme, the freeze-drying bin, the water storage tank, the self-priming pump and other devices are arranged to be matched, cold trap defrosting and heating plate cooling can share one water pool conveniently, heat exchange can be carried out when the two functions are operated at the same time, and therefore the purposes of rapid defrosting and cooling are achieved, operation of other cooling or heating equipment is not needed in the period, and the cost is reduced. The purpose of saving energy is achieved; through cooperation of the heat exchange pipe, the self-priming pump, the heat exchange plate and other devices, the contact area of water and the heat exchange plate can be increased through wavy arrangement of the device, heat exchange through water is facilitated, the inner wall of the cold trap device can be defrosted conveniently through spiral attachment, and the heat exchange efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of freeze-drying bins, in particular to a heat exchange structure for freeze-drying bins. Background Art

[0002] Freeze drying refers to drying in a frozen state under high vacuum. For this purpose, water or other freeze drying solvents quickly sublimate, leaving porous solids. The vacuum freeze dryer is composed of a refrigeration system, a vacuum system, a heating system, and an electrical instrument control system. At the end of freeze drying, the existing vacuum freeze dryer needs to cool the heating plate and heat the cold trap by cooling or heating equipment. Using multiple sets of cooling or heating equipment can easily cause energy waste. For this reason, we propose a heat exchange structure for the freeze drying chamber. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a heat exchange structure for a freeze-drying chamber, which effectively solves the problem that after the freeze-drying of the existing vacuum freeze dryer is completed, the heating plate needs to be cooled by cooling or heating equipment and the cold trap needs to be heated and thawed, and the energy waste is easily caused by using multiple sets of cooling or heating equipment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat exchange structure for a freeze-drying bin, comprising a freeze-drying bin, a water storage tank is arranged on the right side wall of the freeze-drying bin, a self-priming pump is arranged on the bottom wall of the water storage tank, a cold trap device is arranged on the inner wall of the freeze-drying bin, heating plates are evenly arranged on the rear side wall of the inner cavity of the cold trap device, a heat exchange plate is arranged on the bottom wall of the heating plate, a heat exchange channel is opened on the right side wall of the heat exchange plate, a heat exchange tube is arranged on the inner wall of the cold trap device, a vacuum device and a refrigeration device are arranged on the top wall of the freeze-drying bin, an adjusting screw is arranged on the upper and lower side walls of the inner cavity of the water storage tank, a lifting frame is arranged on the outer wall of the adjusting screw, a water suction head is arranged on the left end of the lifting frame, and the water suction head, the heat exchange tube and the heat exchange plate are all connected by a pipeline.

[0005] Preferably, the heat exchange channel is arranged in a wave shape, and the heat exchange tube is spirally arranged on the inner wall of the cold trap device.

[0006] Preferably, brackets are evenly arranged on the left and right side walls of the inner cavity of the cold trap device, and the brackets on the left and right sides are respectively arranged on the left and right side walls of the heating plate.

[0007] Preferably, an observation port is provided on the front side wall of the water storage tank, and an observation plate is provided on the inner wall of the observation port.

[0008] Preferably, a support frame is provided at the bottom end of the water suction head, and a filter screen is provided on the inner wall of the support frame.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The freeze-drying bin uses a heat exchange structure. By arranging the freeze-drying bin, the water storage tank and the self-priming pump and other devices, the device can facilitate the cold trap defrosting and the heating plate cooling to share a water pool. In this way, heat exchange will be carried out when the two functions are running at the same time, thereby achieving the purpose of rapid defrosting and cooling. During this period, no other cooling or heating equipment is required to operate, thereby achieving the purpose of energy saving;

[0011] 2. The heat exchange structure of the freeze-drying bin is equipped with heat exchange pipes, self-priming pumps and heat exchange plates, etc., so that the device can increase the contact area between water and the heat exchange plate through the wave-shaped setting, which is conducive to heat exchange through water. The spiral fit is convenient for defrosting the inner wall of the cold trap device, which is conducive to improving the heat exchange efficiency;

[0012] 3. The heat exchange structure of the freeze-drying chamber can be coordinated with the filter screen, support frame and lifting frame to make the device easy to filter the impurities that may exist in the water, avoid the impurities from entering the pipeline, prevent blockage, and facilitate defrosting and cooling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the heat exchange structure for the freeze-drying bin of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the water storage tank of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the heat exchange plate of the utility model;

[0018] In the figure: 100, freeze-drying chamber; 101, water storage tank; 102, self-priming pump; 103, cold trap device; 104, heating plate; 105, heat exchange plate; 106, heat exchange tube; 107, vacuum device; 108, refrigeration device; 109, adjusting screw; 110, lifting frame; 111, water suction head; 112, bracket; 113, observation plate; 114, support frame; 115, filter screen. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Depend on Figure 1 , Figure 2 and Figure 3 The utility model provides a heat exchange structure for a freeze-drying bin, wherein the right side wall of the freeze-drying bin 100 is fixedly connected with a water storage tank 101, through which water is conveniently stored, the bottom wall of the water storage tank 101 is fixedly connected with a self-priming pump 102, through which the pipeline is conveniently sucked, the inner wall of the freeze-drying bin 100 is fixedly connected with a cold trap device 103, through which water vapor is conveniently captured, which is beneficial for condensing water into frost, the rear side wall of the inner cavity of the cold trap device 103 is evenly fixedly connected with a heating plate 104, through which the raw material is conveniently heated to sublime the water, and high-temperature water is injected into the heating plate 104 to achieve a heating effect, the bottom wall of the heating plate 104 is fixedly connected with a heat exchange plate 105, through which the heat on the heating plate 104 is conveniently exchanged, and a heat exchange channel is provided on the right side wall of the heat exchange plate 105, through which the heat The heat exchange channel facilitates the flow of liquid. The inner wall of the cold trap device 103 is fixedly connected with a heat exchange tube 106, which is convenient for heat exchange and defrosting of the cold trap device 103. The top wall of the freeze-drying bin 100 is fixedly connected with a vacuum device 107 and a refrigeration device 108. The vacuum device 107 facilitates vacuuming operations, and the refrigeration device 108 facilitates freezing operations on raw materials. The upper and lower side walls of the inner cavity of the water storage tank 101 are rotatably connected with an adjusting screw 109, which is convenient for driving the lifting frame 110 to move. The outer wall of the adjusting screw 109 is screwed with the lifting frame 110, which is convenient for driving the water suction head 111 to move. The left end of the lifting frame 110 is fixedly connected with a water suction head 111, which is convenient for absorbing water. The water suction head 111, the heat exchange tube 106 and the heat exchange plate 105 are all connected through pipelines.

[0021] In this embodiment: the raw material is laid on a tray, and the tray is placed in the inner cavity of the heating plate 104. After the door of the freeze-drying chamber 100 is closed, the raw material is frozen by the refrigeration device 108. After the raw material is frozen, the inner cavity of the cold trap device 103 is evacuated by the vacuum device 107. The raw material is heated by starting the heating plate 104 to sublime the water in the raw material. The sublimated water is condensed by starting the cold trap device 103, so as to achieve the effect of freeze-drying the raw material. After the freeze-drying is completed, the self-priming pump 102 is started to suck water from the water suction head 111, and the water is injected into the inner cavity of the heat exchange tube 106 through the pipeline. The cold trap device 103 is heated by normal temperature water, and the water is cooled at the same time. The cold water enters the heat exchange plate 105 through the pipeline. The heat exchange plate 105 is cooled by cold water, and the heating plate 104 is cooled by the heat exchange plate 105. The water after heat exchange is discharged back into the inner cavity of the water storage tank 101 through the self-priming pump 102. After the heat exchange is completed, the lifting frame 110 is driven to move by rotating the adjusting screw 109, and the water suction head 111 is driven to rise by the lifting frame 110, so that the water suction head 111 is located above the liquid surface, so that all the water in the pipeline can be discharged, which can facilitate the subsequent freeze-drying operation of the freeze-drying chamber 100 and avoid water freezing in the pipeline. The device can facilitate the defrosting of the cold trap device 103 and the cooling of the heating plate 104 to share a water pool, so that heat exchange will be carried out when the two functions are running at the same time, thereby achieving the purpose of rapid defrosting and cooling. During this period, no other cooling or heating equipment is required to operate, thereby achieving the purpose of energy saving.

[0022] It should be noted that the pipe connected to the port of the water suction head 111 is a hose, which is convenient for subsequent adjustment of the position of the water suction head 111. The right end of the lifting frame 110 is located on the right side wall of the water tank 101 to prevent the lifting frame 110 from deflecting. The self-priming pump 102 is a gas-liquid dual-purpose type, which is convenient for pumping the pipeline.

[0023] The heat exchange channel is arranged in a wave shape, and the heat exchange tube 106 is spirally fixedly connected to the inner wall of the cold trap device 103 .

[0024] In this embodiment, the wavy configuration is convenient for increasing the contact area between water and the heat exchange plate 105, which is beneficial for heat exchange through water, and the spiral fit is convenient for defrosting the inner wall of the cold trap device 103, which is beneficial for improving heat exchange efficiency.

[0025] The left and right side walls of the inner cavity of the cold trap device 103 are evenly fixedly connected with brackets 112, which facilitate supporting the heating plate 104. The left and right brackets 112 are respectively arranged on the left and right side walls of the heating plate 104.

[0026] In this embodiment: the bracket 112 is used to support the heating plate 104, so as to facilitate the placement of trays for freeze-drying raw materials, and to facilitate support to prevent the heating plate 104 from tilting.

[0027] An observation port is provided on the front side wall of the water storage tank 101, and an observation plate 113 is fixedly connected to the inner wall of the observation port. The observation plate 113 is made of glass material for easy observation.

[0028] In this embodiment, the observation port is provided to facilitate viewing of the liquid level in the water storage tank 101 and viewing and adjusting the position of the water suction head 111, which is beneficial for defrosting and cooling operations.

[0029] The bottom end of the water suction head 111 is fixedly connected with a support frame 114 , and the filter screen 115 is conveniently supported by the support frame 114 . The filter screen 115 is fixedly connected to the inner wall of the support frame 114 .

[0030] In this embodiment, the filter 115 is used to filter out possible impurities in the water, thereby preventing the impurities from entering the pipeline and preventing blockage, which is beneficial to defrosting and cooling operations.

Claims

1. A heat exchange structure for a freeze drying chamber, comprising a freeze drying chamber (100), characterized in that: The right side wall of the freeze drying chamber (100) is provided with a water storage tank (101), the bottom wall of the water storage tank (101) is provided with a self-priming pump (102), the inner wall of the freeze drying chamber (100) is provided with a cold trap device (103), the rear side wall of the inner cavity of the cold trap device (103) is evenly provided with heating plates (104), the bottom wall of the heating plate (104) is provided with a heat exchange plate (105), the right side wall of the heat exchange plate (105) is provided with a heat exchange channel, and the cold trap device (103) is provided with a heat exchange channel. The inner wall is provided with a heat exchange tube (106); the top wall of the freeze-drying chamber (100) is provided with a vacuum device (107) and a refrigeration device (108); the upper and lower side walls of the inner cavity of the water storage tank (101) are provided with an adjusting screw (109); the outer wall of the adjusting screw (109) is provided with a lifting frame (110); the left end of the lifting frame (110) is provided with a water suction head (111); the water suction head (111), the heat exchange tube (106) and the heat exchange plate (105) are all connected through a pipeline.

2. The heat exchange structure for a freeze-drying chamber according to claim 1, characterized in that: The heat exchange channel is arranged in a wave shape, and the heat exchange tube (106) is spirally arranged on the inner wall of the cold trap device (103).

3. The heat exchange structure for a freeze-drying chamber according to claim 1, characterized in that: Brackets (112) are evenly arranged on the left and right side walls of the inner cavity of the cold trap device (103), and the brackets (112) on the left and right sides are respectively arranged on the left and right side walls of the heating plate (104).

4. The heat exchange structure for a freeze-drying chamber according to claim 1, characterized in that: The front side wall of the water storage tank (101) is provided with an observation port, and the inner wall of the observation port is provided with an observation plate (113).

5. The heat exchange structure for a freeze-drying chamber according to claim 1, characterized in that: A support frame (114) is provided at the bottom end of the water suction head (111), and a filter screen (115) is provided on the inner wall of the support frame (114).

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