Energy-saving steam sterilizer
By setting up multiple air-conditioning outlets and temperature probes at the bottom of the steam sterilizer chamber, fine control of cold air discharge is achieved, and heat exchange components are set up in the exhaust main pipe and the hot water drain pipe to preheat the water supply source, which solves the problem that traditional steam sterilizers cannot finely control when expelling cold air, improves energy utilization efficiency and reduces production costs.
Patent Information
- Application Number
- CN202421510754.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Traditional steam sterilizers cannot be finely controlled when expelling cold air, resulting in the discharge of some saturated steam at the same time, reducing energy utilization efficiency and increasing production costs.
Four air-conditioning outlets are set up at the bottom of the sterilizer chamber, each outlet is equipped with an air exhaust valve and a temperature probe to achieve fine control of cold air discharge; heat exchange components are set up at the discharge ends of the heat-discharge water pipe and the exhaust main pipe to heat the water supply source using the discharged hot water and steam to increase the water supply temperature.
By finely controlling the discharge of cold air, unnecessary loss of saturated steam is avoided, energy utilization efficiency is improved, and power consumption is reduced through preheating water supply, and production costs are reduced.
Smart Images
Figure CN222786579U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-temperature sterilization, in particular to an energy-saving steam sterilizer. Background Art
[0002] In the edible fungi industry, gravity displacement steam sterilizers are widely used. Their working principle is based on the difference in specific gravity between saturated steam and air. Specifically, by inputting saturated steam into the upper part of the sterilizer's inner chamber, the gravity of the steam is used to press the cold air down to the bottom of the inner chamber and exhaust it through the exhaust port at the bottom. Before performing the sterilization operation, in order to ensure the sterilization effect, it is necessary to ensure that the proportion of residual air in the sterilizer is less than 4%, that is, at least 96% of the cold air is required to be exhausted.
[0003] However, in actual operation, the cold air is not evenly distributed at the bottom of the inner chamber, and the traditional steam sterilizer only has a single exhaust port at the bottom, resulting in a lack of fine control over the exhaust process. This design will inevitably exhaust some saturated steam at the same time when exhausting the cold air, especially in multiple pressurized exhaust operations. The consumption of a large amount of saturated steam not only reduces energy efficiency, but also significantly increases production costs.
[0004] In addition, when preparing saturated steam, traditional steam sterilizers only rely on heating tubes to directly heat pure water. Although this heating method is simple and direct, it consumes a lot of electricity, resulting in high electricity costs. Therefore, it is necessary to improve the existing steam sterilizer to improve its energy utilization efficiency and reduce production costs. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an energy-saving steam sterilizer which can effectively improve the energy utilization rate and reduce the production cost in view of the deficiencies of the prior art.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An energy-saving steam sterilizer, characterized by:
[0008] Including sterilizer room, steam generator and exhaust main,
[0009] A steam inlet is provided at the top of the sterilizer chamber, a steam inlet pipe is connected between the steam inlet and the steam generator, and a steam inlet valve is installed on the steam inlet pipe;
[0010] At least three cold air outlets are provided at the bottom of the sterilizer chamber, and an exhaust branch pipe is connected between each cold air outlet and the exhaust main pipe, and an exhaust air valve and a temperature probe are installed on each exhaust branch pipe. The temperature probe is arranged between the exhaust air valve and the cold air outlet to monitor the steam temperature at the corresponding cold air outlet;
[0011] A drainage outlet is also provided at the bottom of the sterilizer chamber, the drainage outlet is connected to a hot water drainage pipe, a hot water drainage valve is installed on the hot water drainage pipe, and heat exchange components are provided at the discharge ends of the hot water drainage pipe and the exhaust main pipe;
[0012] A pure water inlet is provided at the bottom of the steam generator, and a water supply main pipe is connected to the pure water inlet. A water supply main valve is installed on the water supply main pipe. The other end of the water supply main pipe is connected to two water supply branches. The other ends of the water supply branches pass through the above-mentioned heat exchange components and are connected to the water source, so as to preheat the pure water using the hot water vapor discharged from the hot water exhaust pipe and the exhaust main pipe.
[0013] The technical problem to be solved by the utility model can be further achieved through the following steps: there are four cold air outlets in total, all of which are arranged below the steam inlet, and the distances between adjacent cold air outlets are equal.
[0014] The technical problem to be solved by the utility model can be further achieved through the following steps: a manual gate valve is further provided on the exhaust branch pipe between each exhaust valve and the exhaust main pipe.
[0015] The technical problem to be solved by the utility model can be further achieved through the following steps: the top of the sterilizer chamber is also connected to a return air pipe, and a first one-way valve is installed on the return air pipe.
[0016] The technical problem to be solved by the utility model can be further achieved through the following steps: a second one-way valve is installed between the water supply main valve and the pure water inlet.
[0017] The technical problem to be solved by the utility model can be further achieved through the following steps, wherein a cold air outlet is arranged directly opposite to the steam inlet.
[0018] The technical problem to be solved by the utility model can be further achieved through the following steps. The heat exchange component is a heat exchange tube or a heat exchanger.
[0019] The technical problem to be solved by the utility model can be further achieved through the following steps, including a temperature control module connected to the temperature probe, the air exhaust valve is a pneumatic valve connected to the temperature control module, the temperature control module is used to receive the temperature signal at the temperature probe, and judge whether the steam temperature at the cold air outlet meets the preset heating temperature of the sterilizer chamber according to the signal, and control the opening and closing of the corresponding air exhaust valve according to the judgment result.
[0020] Compared with the prior art, the beneficial effects of the utility model are as follows: four cold air outlets are arranged at the bottom of the sterilizer chamber, each cold air outlet is equipped with an exhaust air valve and a temperature probe, which can realize fine control of the cold air discharge and avoid unnecessary saturated steam loss during the exhaust process; by arranging heat exchange components at the discharge ends of the hot water exhaust pipe and the exhaust main pipe, the hot water and steam discharged during the heating and sterilization process are used to heat the water supply source of the steam generator, thereby increasing the water supply temperature, thereby reducing electricity consumption and effectively reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the structure of the utility model;
[0022] Figure 2 This is a steam usage table for sterilizing mushroom sticks in a 95m³ sterilizer in the utility model;
[0023] Figure 3 The following is a schematic table showing the sterilization costs corresponding to different pure water temperatures;
[0024] In the figure: 1-sterilizer chamber; 2-steam generator; 3-exhaust main pipe; 4-steam inlet; 5-steam inlet pipe; 6-steam inlet valve; 7-cold air outlet; 8-exhaust branch pipe; 9-exhaust air valve; 10-temperature probe; 11-drain outlet; 12-hot water drain pipe; 13-hot water drain valve; 14-heat exchange component; 15-pure water inlet; 16-water supply main pipe; 17-water supply main valve; 18-water supply branch pipe; 19-manual gate valve; 20-return air pipe; 21-first one-way valve; 22-second one-way valve. DETAILED DESCRIPTION
[0025] The specific technical solutions of the present invention are further described below so that those skilled in the art can further understand the present invention, but it does not constitute a limitation on the rights thereof.
[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.
[0027] Please refer to Figure 1 An energy-saving steam sterilizer comprises a sterilizer chamber 1, a steam generator 2 and an exhaust main pipe 3, a steam inlet 4 is arranged on the top of the sterilizer chamber 1, a steam inlet pipe 5 is connected between the steam inlet 4 and the steam generator 2, and a steam inlet valve is installed on the steam inlet pipe 5;
[0028] At least three cold air outlets 7 are provided at the bottom of the sterilizer chamber 1, and an exhaust branch pipe 8 is connected between each cold air outlet 7 and the exhaust main pipe 3, and an exhaust air valve 9 and a temperature probe 10 are installed on each exhaust branch pipe 8. The temperature probe 10 is arranged between the exhaust air valve 9 and the cold air outlet 7, and is used to monitor the steam temperature at the corresponding cold air outlet 7;
[0029] A drainage outlet 11 is also provided at the bottom of the sterilizer chamber 1, and a hot water drainage pipe 12 is connected to the drainage outlet 11, a hot water drainage valve 13 is installed on the hot water drainage pipe 12, and a heat exchange component 14 is provided at the discharge end of the hot water drainage pipe 12 and the exhaust main pipe 3;
[0030] The bottom of the steam generator 2 is provided with a pure water inlet 15, and a water supply main pipe 16 is connected to the pure water inlet 15, and a water supply main valve 17 is installed on the water supply main pipe 16. The other end of the water supply main pipe 16 is connected to two water supply branches 18, and the other ends of the water supply branches 18 pass through the above-mentioned heat exchange component 14 and are connected to the water source, so as to preheat the pure water in the pipe with the hot water gas discharged from the hot water discharge pipe 12 and the exhaust main pipe 3. The steam generator 2 includes a water tank, a liquid level meter and a heating pipe. The pure water in the water tank is heated and evaporated by the heating pipe to prepare steam, and the water supply main pipe is connected to the water tank.
[0031] The steps of using the utility model are as follows, wherein the set temperatures are increased in sequence according to the sequence numbers:
[0032] (1) Open the steam inlet valve 6, start the steam generator 2, and open it according to usage requirements;
[0033] (2) Saturated steam at set temperature 1 is introduced into the sterilizer chamber 1, and the readings of each temperature probe 10 are observed. If the set temperature 1 is not reached at a certain cold air outlet 7, it means that cold air is gathering at that location. At this time, the corresponding exhaust valve 9 is opened to exhaust air until the readings of all temperature probes 10 reach the set temperature 1.
[0034] (3) Saturated steam at set temperature 2 is introduced into the sterilizer chamber 1, and the readings of each temperature probe 10 are observed. If the set temperature 2 is not reached at a certain cold air outlet 7, it means that cold air is gathered at that place. At this time, the corresponding exhaust valve 9 is opened to exhaust air until the readings of all temperature probes 10 reach the set temperature 2;
[0035] (4) Saturated steam at a set temperature 3 is introduced into the sterilizer chamber 1, and the readings of each temperature probe 10 are observed. If the set temperature 3 is not reached at a certain cold air outlet 7, it means that cold air is gathering at that location. At this time, the corresponding exhaust valve 9 is opened to exhaust air until the readings of all temperature probes 10 reach the set temperature 3;
[0036] (5) Saturated steam at a set temperature 4 is introduced into the sterilizer chamber 1, and the readings of each temperature probe 10 are observed. If the set temperature 4 is not reached at a certain cold air outlet 7, it means that cold air is gathering at that location. At this time, the corresponding exhaust valve 9 is opened to exhaust air until the readings of all temperature probes 10 reach the set temperature 4.
[0037] (6) After the exhaust operation is completed, perform the sterilization operation.
[0038] For 95m³ sterilizer mushroom sticks (10800 sticks), refer to the steam consumed in the above steps as follows Figure 2 As shown, the total steam consumption in the test results is about 3994.2 kg, which saves about 200 kg of steam compared with traditional gravity displacement.
[0039] In the above steps, the discharged "cold air" passes through the exhaust branch pipe 8 and the exhaust main pipe 3 in turn and reaches the corresponding heat exchange component 14; at the same time, the hot water discharged from the sterilizer chamber 1 during the heating and sterilization process also reaches the corresponding heat exchange component 14 through the hot water discharge pipe 12 to preheat the pure water in the water supply branch pipe 18. Figure 3 As shown, when the temperature of pure water entering the steam generator 2 is not heated (25°C), the average price of each mushroom stick is 0.0872 yuan, and when the temperature of pure water is heated (80°C), the average price of each mushroom stick is 0.0795 yuan. The higher the temperature of pure water, the lower the price of each mushroom stick. Taking a factory with a daily output of 60,000 mushroom sticks and an annual production of 300 days as an example, the use of the sterilizer of the utility model can save costs in one year: (0.0872-0.0795)*60000*300=138600 yuan, which greatly reduces the production cost of growers.
[0040] Furthermore, there are four cold air outlets 7, all of which are arranged below the steam inlet 4, and the distances between adjacent cold air outlets 7 are equal. In this way, the positioning operation of the cold air area can be performed more accurately, further improving the work efficiency.
[0041] Further, a manual gate valve 19 is also provided on the exhaust branch pipe 8 between each exhaust valve 9 and the exhaust main pipe 3. In this way, the manual gate valve 19 can be operated according to the use requirements to close the corresponding exhaust branch pipe 8.
[0042] Furthermore, the top of the sterilizer chamber 1 is also connected to a return air pipe 20, and a first non-return valve 21 is installed on the return air pipe 20. In this way, hot air can be returned to the sterilizer chamber 1 to improve the sterilization efficiency.
[0043] Furthermore, a second one-way valve 22 is installed between the water supply main valve 17 and the pure water inlet 15. This can effectively prevent water from flowing back and polluting the water source.
[0044] Furthermore, one of the cold air outlets 7 is arranged directly opposite to the steam inlet 4 .
[0045] Furthermore, the heat exchange component 14 is a heat exchange tube or a heat exchanger.
[0046] Further, in order to simplify the operation steps, the energy-saving sterilizer further includes a temperature control module connected to the temperature probe 10, and the exhaust air valve 9 is a pneumatic valve connected to the temperature control module. The temperature control module is used to receive the temperature signal at the temperature probe 10, and judge whether the steam temperature at the cold air outlet 7 meets the preset heating temperature of the sterilizer chamber 1 according to the signal, and control the opening and closing of the corresponding exhaust air valve 9 according to the judgment result. Specifically, the temperature control module has four preset heating temperatures, namely, the set temperatures 1, 2, 3, and 4 of the saturated steam in the above operation steps, and its judgment logic is consistent with the above operation steps, which will not be repeated here.
[0047] The utility model arranges four cold air outlets 7 at the bottom of the sterilizer chamber 1, and each cold air outlet 7 is equipped with an exhaust air valve 9 and a temperature probe 10, which can realize fine control over the exhaust of cold air and avoid unnecessary loss of saturated steam in the exhaust process; by arranging a heat exchange component 14 at the exhaust end of the hot water exhaust pipe 12 and the exhaust main pipe 3, the hot water and steam discharged in the heating and sterilization process are used to heat the water supply source of the steam generator 2, thereby increasing the water supply temperature, thereby reducing power consumption and effectively reducing production costs.
[0048] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. An energy-saving steam sterilizer, characterized in that: Including sterilizer room, steam generator and exhaust main, A steam inlet is provided at the top of the sterilizer chamber, a steam inlet pipe is connected between the steam inlet and the steam generator, and a steam inlet valve is installed on the steam inlet pipe; At least three cold air outlets are provided at the bottom of the sterilizer chamber, and an exhaust branch pipe is connected between each cold air outlet and the exhaust main pipe, and an exhaust air valve and a temperature probe are installed on each exhaust branch pipe. The temperature probe is arranged between the exhaust air valve and the cold air outlet to monitor the steam temperature at the corresponding cold air outlet; A drainage outlet is also provided at the bottom of the sterilizer chamber, the drainage outlet is connected to a hot water drainage pipe, a hot water drainage valve is installed on the hot water drainage pipe, and heat exchange components are provided at the discharge ends of the hot water drainage pipe and the exhaust main pipe; A pure water inlet is provided at the bottom of the steam generator, and a water supply main pipe is connected to the pure water inlet. A water supply main valve is installed on the water supply main pipe. The other end of the water supply main pipe is connected to two water supply branches. The other ends of the water supply branches pass through the above-mentioned heat exchange components and are connected to the water source, so as to preheat the pure water in the pipe by using the hot water vapor discharged from the hot water exhaust pipe and the exhaust main pipe.
2. The energy-saving steam sterilizer according to claim 1, characterized in that: There are four cold air outlets in total, all of which are arranged below the steam inlet, and the distances between adjacent cold air outlets are equal.
3. The energy-saving steam sterilizer according to claim 1, characterized in that: A manual gate valve is also provided on the exhaust branch pipe between each air exhaust valve and the exhaust main pipe.
4. The energy-saving steam sterilizer according to claim 1 is characterized in that: The top of the sterilizer chamber is also connected with a return air pipe, and a first one-way valve is installed on the return air pipe.
5. The energy-saving steam sterilizer according to claim 1 is characterized in that: A second one-way valve is installed between the water supply main valve and the pure water inlet.
6. The energy-saving steam sterilizer according to claim 1, characterized in that: One of the cold air outlets is arranged opposite to the steam inlet.
7. The energy-saving steam sterilizer according to claim 1, characterized in that: The heat exchange component is a heat exchange tube or a heat exchanger.
8. The energy-saving steam sterilizer according to claim 1, characterized in that: It includes a temperature control module connected to the temperature probe, and the exhaust air valve is a pneumatic valve connected to the temperature control module. The temperature control module is used to receive the temperature signal from the temperature probe, and judge whether the steam temperature at the cold air outlet meets the preset heating temperature of the sterilizer chamber according to the signal, and control the opening and closing of the corresponding exhaust air valve according to the judgment result.