1249990 九、發明說明： 【發明所屬之技術領域】 ’特別是指一種可使筍 特別是筍類的多段式真 本發明是有關於一種預冷製程 類農產品降溫冷卻的塊狀農產品， 空預冷製程。 【先前技術】 本案申請人為了使包葉蔬菜内外 ^汰 未円外可均勻地降溫，及避 免匕葉蔬菜因過度預冷而產生外芦1249990 IX. Description of invention: [Technical field to which the invention belongs] 'Specially refers to a multi-stage type of bamboo shoots, especially bamboo shoots. The present invention relates to a block-shaped agricultural product for cooling and cooling of pre-cooled process agricultural products, and air precooling. Process. [Prior Art] The applicant of this case can evenly cool the inside and outside of the leaf-leaf vegetables, and avoid the excessive re-cooling of the eucalyptus vegetables.
卜層過々凍傷、過度脫水的 4趕，於是提出一種包葉蔬菜 ^ 式真空預冷製程（已 獲准為發明專利第558419號），麸而 a專+ ^ ^ ^ ^ 幻然而，當業者欲將此種預 々製釭運用於筍類農產品（例如 曲洋口 a J戈、、求竹旬）上時，由於筍類 目女主 傅上的不冋，例如包葉蔬菜本身 /'有表面積遠大於筒類農產品的先天優勢等等，因此，苟 類農產品並無法如同包葉蔬菜般在此種預冷製程中達到良 好的降溫效果，據此，本案申 r月人於疋獒出一種適用於筍 ==的多段式真空預冷製程，㈣類農產品亦可如同 ==產生，？的降溫效果，以有效延長筍類農產品 、、丁 τ θ ’亚提昇其保鮮品質，而使f類農產品可經由 海運銷售至我國的鄰近國家，進而增加我 國際競爭力。 【發明内容】 :此’本發明…’即在提供一種可使可使苟類農 塊狀曲產文也降'皿，亚可避免其苟殼間產生水浸現象的 龙狀辰產品，特別是筍類的多段式真空預冷製程。 d： 5 1249990 本發明塊狀農產品，特別是筍類的多段式真空預冷製 紅，包含··（ A)在一真空腔體内準備一冷卻水，並使一筍 頒辰產至少局部浸泡於該冷卻水内。（B )將該真空腔體 内的體抽出，而使該真空腔體的内部壓力降壓至一起始 L力（c)在一第一暫壓時間内暫壓該真空腔體，而使該 ^部水與該筍類農產品進行熱交換，且該真空腔體的内部 壓力從該起始壓力昇壓至一第一壓力。（D)使該真空腔體 =壓並且開啟。⑻將該苟類農產品移離該冷卻水。（F) :測β亥旬類農產品的溫度。（G)將該筍類農產品置於該真 空腔體内，並將該真空腔體内的氣體抽出，而使該真空腔 體部壓力降壓至一對應於該荀類農產品的溫度的水飽 和蒸汽壓。（Η)在一乾燥暫壓時間内暫壓該直空腔體。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參相狀-較佳實施㈣詳細說明中，將可清楚 的明白。 參閱圖2、5，為本發明妙妝麄姦口 鬼狀辰產口口，特別是筍類的多 &式真空預冷製程的一 只％例，该製程可運用一如圖1 所不的真空預冷裝置來執行 ρρ , ^ Μ真空預冷裝置並不拘 限本發明之應用範圍，在 -真空腔體4真空預冷裳置包含 ±4, 真工抽乳早疋20、—冷凝器30、一冷凍 主機40、一具有一第一管 ^ r東 曰士 第二管路52的管路單元 50、一具有一閘閥61、_ 早兀 σσ 角間62的開關閥單元60、 a 單元7〇U力ff8Q 早凡60 一通亂 違弟一官路51的兩端是分別與該 1249990 真二ι體ίο、该冷凝器3〇連接，該第二管路52的兩端是 刀別與A ~减為30、該真空抽氣單元20連接，該閘閥61 是裝設於該第―管路51上，而位於該真空腔體1G與該冷凝 °。3〇之間，该角閥62是裝設於該第二管路52上，而位於 該冷凝器30與該真空抽氣單it 20之間，該通氣單元70是 衣。又於孩~嘁态30上。該真空抽氣單元2〇可經該第一管路In the case of blisters, frostbite and excessive dehydration, a vacuum pre-cooling process was proposed (the patent has been approved as patent No. 558419), and the bran and a special + ^ ^ ^ ^ illusion, however, When this kind of pre-tanning system is applied to bamboo shoots (such as Quyangkou a J Ge, Qiu Chu Xun), due to the unsatisfactory of the bamboo shoots, such as the leafy vegetables themselves / 'has surface area It is far greater than the congenital advantages of the barrel agricultural products, etc. Therefore, the agricultural products of the scorpion cannot achieve a good cooling effect in the pre-cooling process like the leaf-leaf vegetables. Accordingly, the application of this case is applicable. In the multi-stage vacuum pre-cooling process of the bamboo shoot ==, the (four) agricultural products can also be produced as ==? The cooling effect is to effectively extend the bamboo shoots, and the Ding τ θ ' to enhance its preservation quality, so that the f agricultural products can be sold to neighboring countries in China by sea, thereby increasing our international competitiveness. SUMMARY OF THE INVENTION: This 'present invention...' is to provide a dragon-shaped product which can make the scorpion-like lumps of the scorpion-like squad, and avoid the phenomenon of water immersion between the clams, especially It is a multi-stage vacuum pre-cooling process for bamboo shoots. d: 5 1249990 The multi-stage vacuum pre-cooling red of the block agricultural products of the present invention, especially the bamboo shoots, comprises: (A) preparing a cooling water in a vacuum chamber, and at least partially soaking a bamboo shoots In the cooling water. (B) extracting the body in the vacuum chamber, and reducing the internal pressure of the vacuum chamber to an initial L-force (c) temporarily pressing the vacuum chamber during a first temporary pressure period, thereby causing the vacuum chamber to be pressed The water is exchanged with the bamboo shoots, and the internal pressure of the vacuum chamber is increased from the initial pressure to a first pressure. (D) The vacuum chamber is pressed and opened. (8) The cockroach agricultural product is removed from the cooling water. (F): Measure the temperature of the agricultural products of the β hai. (G) placing the bamboo shoot agricultural product in the vacuum chamber, and extracting the gas in the vacuum chamber, and reducing the pressure of the vacuum chamber body to a water saturation corresponding to the temperature of the agricultural product. Steam pressure. (Η) Temporarily pressurizing the straight cavity during a dry temporary pressure period. [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following description of the accompanying <RTIgt; Referring to Figures 2 and 5, there is a % of the multi- & vacuum pre-cooling process of the present invention, especially the bamboo shoots, which can be used as shown in Figure 1. The vacuum pre-cooling device is used to execute the ρρ , ^ Μ vacuum pre-cooling device without restricting the application range of the present invention. The vacuum chamber 4 vacuum pre-cooling skirt contains ±4, the real pumping early morning 疋 20, the condenser 30. A freezing main unit 40, a pipe unit 50 having a first pipe, a second pipe 52, a switching valve unit 60 having a gate valve 61, an early 兀σσ angle 62, and a unit 7 〇U力ff8Q 早凡60 一通乱乱弟一官路51 Both ends are connected to the 1249990 true two ι body, the condenser 3〇, the second line 52 is at both ends of the knife and A The vacuum pumping unit 20 is connected to the vacuum pumping unit 20, and the gate valve 61 is disposed on the first conduit 51 and located in the vacuum chamber 1G and the condensation. Between 3 turns, the angle valve 62 is mounted on the second line 52 between the condenser 30 and the vacuum pumping unit it 20, which is a garment. Also on the child ~ 嘁 state 30. The vacuum pumping unit 2〇 can pass through the first pipeline
51、该間閱61、該冷凝器30、該第二管路52、該角閥62， 而將該真空腔體10内的氣體抽出。 該真空預冷製程包含： 步驟（一）：如圖1所示，開啟該真空腔體，並將一 衣填有一冷部水91及數局部浸泡於該冷卻水91内的筍類農 產m2 100的冷卻容器9〇置入該真空腔體1 〇内，再將該真空 腔體10關閉。在本實施例中，該等筍類農產是為綠 竹筍，且該等筍類農產品1〇〇是架立站高於該冷卻容器90 内’該等筍類農產品100的底部是浸泡於該冷卻水91内， 且該冷卻水91的液面高度是不超過該等筍類農產品100的 一半高度。 步驟（二）·’如圖1、2、3所示，啟動該真空抽氣單元 20並開啟該開關閥單元6〇,以將該真空腔體1〇内的氣體抽 出，而使該真空腔體10的内部壓力降壓至一起始壓力p〇。 在本實施例中，該起始壓力p〇是為8 828mbar，而，當該 真空腔體10的内部壓力降壓至該起始壓力p〇時，該:: 水91量測到的水溫是為7.，而，該等筍類農產品1⑼ 量测到的筍溫是為18.2〇C。在此降壓過程中，由於:真空 (S) 1249990 腔體10内的壓力迅速下降，因此，該冷卻容器90内的冷卻 水91會產生低溫汽化且迅速降溫的現象。 步驟（三）：如圖1、2、3所示，停止該真空抽氣單元 20並關閉該開關閥單元60，以在一第一暫壓時間11 ( 471 〜2271sec)内暫壓該真空腔體1〇，而使該冷卻水Μ與該 等筍類農產品100進行熱交換，且該真空腔體1〇的内部壓 力是從該起始壓力P0昇壓至一第一壓力P1。在本實施例中 σ亥第一壓力P1是為10.66mbar，而，當該真空腔體1〇的 内σ卩壓力因该冷卻水91汽化而昇壓至該第一壓力p 1時， 該冷卻水91量測到的水溫是為6。(：，該等筍類農產品ι〇〇 量測到的筍溫是為9.3°C。在此暫壓過程開始時，由於該冷 卻水91與該等筍類農產品100兩者之間的溫差甚大，因此 ’該冷卻水91與該等筍類農產品1〇〇會快速地進行熱交換 ，使該等筍類農產品100的筍溫可迅速地降低，而，在此暫 壓過程趨近於結束時，由於該冷卻水9丨與該等筍類農產品 100不斷地進行熱交換，導致該冷卻水91水溫上升及該等 筍類農產品100筍溫下降，因此，該冷卻水91與該等筍類 農產品100兩者之間的溫差會逐漸變小，而造成熱傳效率逐 漸變差，此可由圖2中該等筍類農產品1〇〇的筍溫下降曲線 趨於平緩而獲得印證。 步驟（四）：如圖1、2、3所示，啟動該真空抽氣單元 20並開啟該開關閥單元6〇，以將該真空腔體丨〇内的氣體抽 出，而使該真空腔體10的内部壓力，從該第一壓力ρι降 壓至一第二壓力P2。在本實施例中，該第二壓力P2是為 d 8 1249990 7’724mbar，而，當該真空腔體10的内部壓力降壓至該第二 壓力P2時，該冷卻水91量測到的水溫是為5.9。(：，該等筍 類農產品100量測到的筍溫是為代。在此降壓過程中，由 於該真空腔體1G内的壓力會再迅速下降，因此，該冷卻容 90内的Q卻水91會再產生低溫汽化且迅速降溫的現象’ 如此，即可再增大該冷卻水91與該#筍類農產品i⑼兩者 之間的溫差，而提升兩者之間的熱交換效率。51. The chamber 61, the condenser 30, the second conduit 52, and the angle valve 62 extract the gas in the vacuum chamber 10. The vacuum pre-cooling process comprises: Step (1): as shown in FIG. 1, the vacuum chamber is opened, and a garment is filled with a cold water 91 and a plurality of bamboo shoots m2 partially immersed in the cooling water 91. A cooling container 9 of 100 is placed in the vacuum chamber 1 and the vacuum chamber 10 is closed. In the present embodiment, the bamboo shoots are green bamboo shoots, and the bamboo shoots of the bamboo shoots are higher than the cooling container 90. The bottom of the bamboo shoots 100 is soaked in the bottom. In the cooling water 91, the liquid level of the cooling water 91 is not more than half the height of the bamboo shoots 100. Step (2)·', as shown in Figs. 1, 2, and 3, the vacuum pumping unit 20 is activated and the switching valve unit 6 is turned on to extract the gas in the vacuum chamber 1〇, and the vacuum chamber is opened. The internal pressure of the body 10 is reduced to an initial pressure p〇. In the present embodiment, the initial pressure p 〇 is 8 828 mbar, and when the internal pressure of the vacuum chamber 10 is depressurized to the initial pressure p ,, the water temperature measured by the water: 91 It is 7., and the bamboo shoot temperature measured by these bamboo shoots 1 (9) is 18.2 〇C. In this step-down process, since the pressure in the cavity 10 is rapidly lowered by the vacuum (S) 1249990, the cooling water 91 in the cooling container 90 is cooled at a low temperature and rapidly cooled. Step (3): As shown in FIGS. 1, 2 and 3, the vacuum pumping unit 20 is stopped and the switching valve unit 60 is closed to temporarily press the vacuum chamber within a first temporary pressure time of 11 (471 to 2271 sec). The cooling water enthalpy is heat exchanged with the bamboo shoot agricultural products 100, and the internal pressure of the vacuum chamber 1〇 is increased from the initial pressure P0 to a first pressure P1. In the present embodiment, the first pressure P1 of σ is 10.66 mbar, and when the internal σ卩 pressure of the vacuum chamber 1〇 is boosted to the first pressure p 1 by vaporization of the cooling water 91, the cooling The water temperature measured by the water 91 is 6. (: The temperature of the bamboo shoots measured by these bamboo shoots is 9.3 ° C. At the beginning of this temporary pressure process, the temperature difference between the cooling water 91 and the bamboo shoots 100 is very large. Therefore, the cooling water 91 and the bamboo shoots will rapidly exchange heat, so that the temperature of the bamboo shoots of the bamboo shoots 100 can be rapidly reduced, and at this end of the temporary pressure process Since the cooling water 9丨 is continuously exchanged with the bamboo shoots agricultural products 100, the water temperature of the cooling water 91 rises and the temperature of the bamboo shoots of the bamboo shoots is decreased. Therefore, the cooling water 91 and the bamboo shoots The temperature difference between the agricultural products 100 will gradually become smaller, and the heat transfer efficiency will gradually deteriorate. This can be confirmed by the fact that the temperature drop curve of the bamboo shoots of these bamboo shoots in Fig. 2 tends to be gentle. ), as shown in FIGS. 1, 2, and 3, the vacuum pumping unit 20 is activated and the switching valve unit 6 is opened to extract the gas in the vacuum chamber, and the inside of the vacuum chamber 10 is opened. The pressure is reduced from the first pressure ρι to a second pressure P2. In the embodiment, the second pressure P2 is d 8 1249990 7'724 mbar, and when the internal pressure of the vacuum chamber 10 is depressurized to the second pressure P2, the water temperature measured by the cooling water 91 is It is 5.9. (:: The temperature of the bamboo shoots measured by the 100 kinds of agricultural products is the generation. In this depressurization process, since the pressure in the vacuum chamber 1G will drop rapidly again, the cooling capacity is within 90 The Q water 91 will then regenerate at a low temperature and rapidly cool down. Thus, the temperature difference between the cooling water 91 and the #17 agricultural product i(9) can be increased, and the heat exchange between the two can be increased. effectiveness.
步驟（五如圖卜2、3所示，停止該真空抽氣單元 20並關閉該開關閥單元6〇 ’以在一第二暫壓時間t2 ( 23" 〜4471seC)内暫壓該真空腔體1〇，而使該冷卻水9i與該 等筍類農產品100進行熱交換，且該真空腔體1〇的内部壓 力是從該第二壓力P2昇壓至—第三壓力p3。在本實施例中 .亥第—壓力P3疋為10 〇9mbar，而.，當該真空腔體⑺的 内部壓力因該冷卻水91汽化而昇壓至該第三壓力p3時， 該冷卻水量測到的水溫是為代，該等筍類農產品_ 量測到的筒溫是為5.rc。在此暫壓過程開始時，由於# 卻水與該等筍類農產品i⑻兩者之間的溫差再度增^ 因此，該冷卻水91與該等筍類農產品1GG可再快速地進行 熱交換，而使該等筍類農產品丨⑻的筍溫可再迅速地降低， ，而，在此暫壓過關近㈣束時，由於該冷卻水91與該等 旬類農產品1GG兩者之間的溫差又逐漸變小，而造成熱傳效 率逐漸變差，因此，圖2中該等荀類農產品i⑼的筒溫下降 曲線亦會再度趨於平緩。然而，經此步驟後，該等筍類農產 品100的溫度已降低至-般預冷溫度範圍（3〜5。〇的代 1249990 ，因此，即可不需再重覆進行上述的降壓與暫壓步驟。 步驟（六）··如圖4所示，使該真空腔體1〇回壓至一 大氣壓並且開啟。在本實施例中，是開啟該通氣單元與 該閘閥61，而使外界氣體經該冷凝器3〇冷卻後，再導入嗜 真空腔體10内。 / 步驟（七）：如圖4所示，將該冷卻水91從該冷卻容 时90内移除’而使$亥專荀類農產品1 〇〇脫離該冷卻水91。 步驟（八）：如圖4、5、6所示，量測該等筍類農產品 1〇〇的溫度。在本實施例中，該等筍類農產品100的溫度是 從5.1°C微昇至6°C。 步驟（九）：如圖4、5、6所示，將該等筍類農產品 1〇〇置於該真空腔體1〇内，啟動該真空抽氣單元2〇並開啟 該開關閥單元60，而使該真空腔體的10内部壓力降壓至一 對應於該等筍類農產品100的溫度（6t)的水飽和蒸汽壓 P4 °在本實施例中，該水飽和蒸汽壓P4是為9.31mbar。 步驟（十）：如圖4、5、6所示，停止該真空抽氣單元 2〇並關閉該開關閥單元60，以在一乾燥暫壓時間t3 (】82 〜492sec)内暫壓該真空腔體1〇。在此暫壓過程中，因為 °亥4筍類辰產品1 〇〇的筍殼間的水份會汽化排放至該真空腔 體10内’並帶走該等筍類農產品10〇的熱量，因此，該真 空腔體10内的壓力會呈現出從該水飽和蒸汽壓P4緩慢上 升的趨勢，同時，該等筍類農產品100的溫度亦會呈現緩慢 下降的趨勢，而再降溫至4.6°C，如此，即可使該等筒類農 產品100產生乾燥的效果，而避免該等筍類農產品1〇〇的苟 10 .1249990 殼間產生水浸的現象，此從附件一所示的該等筒類農產品 100的剖面實物照片亦可獲得印證。 口口 猎此，運用本發明的真空預冷製程即可使該等筍類農 產品100有效地降溫至一般預冷溫度範圍的低溫，同時，、= I使，等筍類農產品100產生乾燥的效果，而避免該等筍類 辰產〇口 100的筍殼間產生水浸現象，進而使該等筍類農產品 100可維持良好的冷藏品質。 σσ 、、、二由以上的說明，可再將本發明的優點歸納如下： 、由於該冷卻水91與該等筍類農產品100進行熱交 換的過程需要-段時間，因此，本發明是利用多段式的降壓 與暫壓步驟來降低該等荀類農產品_的溫度。如此，在降 壓步驟中，本發明可增大該冷卻水91與該等筍類農產品 100兩者之間的溫差，而使該冷卻水9丨與該等筍類農產品 100可快速地進行熱交換，因此，本發明可有效縮短冷卻所 需時間，而，在暫壓步驟中，本發明可使該冷卻水91與該 等筍類農產品100在一段暫壓時間内持續地進行熱交換，因 此，本發明可使該等筍類農產品丨〇〇有效地降溫至理想的保 鮮溫度，而便於冷藏運送。 二、本發明在暫壓步驟中，並不需啟動該真空預冷裝 置，因此，在本發明的預冷過程中，該真空預冷裝置只需要 進行間歇式的啟動，如此，不僅可大幅減低所需之運轉電力 ’亦而可降低生產成本。 二、本發明在將該等筍類農產品1〇〇降溫至理想的保 鮮溫度後，更可利用同一真空預冷裝置對該等筍類農產品 ⑧ 11 1249990 100進行真空乾燥處理，因此，本發明除了可有效排除該等 荀類農產品100在表面上及筍殼間的水份外，更可有效避免 T等荀類農產品100的筍殼間產生水浸現象，而使該等筍類 辰產品100在冷藏運送過程中可維持良好的冷藏品質。Step (5), as shown in FIGS. 2 and 3, stopping the vacuum pumping unit 20 and closing the switching valve unit 6〇' to temporarily press the vacuum chamber in a second temporary pressure time t2 (23"~4471seC) 1〇, the cooling water 9i is heat-exchanged with the bamboo shoots agricultural products 100, and the internal pressure of the vacuum chamber 1〇 is boosted from the second pressure P2 to the third pressure p3. In this embodiment The middle of the first step - the pressure P3 疋 is 10 〇 9 mbar, and when the internal pressure of the vacuum chamber (7) is raised to the third pressure p3 by the vaporization of the cooling water 91, the water measured by the cooling water The temperature is the generation, the measured temperature of the bamboo shoots is 5.rc. At the beginning of the temporary pressure process, the temperature difference between the water and the bamboo shoots i(8) is increased again. ^ Therefore, the cooling water 91 and the bamboo shoots 1GG can be exchanged quickly and quickly, so that the temperature of the bamboo shoots of the bamboo shoots (8) can be quickly reduced again, and the temporary pressure is close to this (4) In the case of the bundle, the temperature difference between the cooling water 91 and the first-class agricultural products 1GG is gradually reduced, resulting in heat transfer efficiency. Gradually worse, therefore, the tube temperature drop curve of the sorghum agricultural products i(9) in Figure 2 will once again tend to be flat. However, after this step, the temperature of the bamboo shoots 100 has been lowered to the pre-cooling temperature. The range (3~5. 〇's generation 1249990, therefore, it is no longer necessary to repeat the above-mentioned step-down and temporary pressure steps. Step (6)·· As shown in Fig. 4, the vacuum chamber 1〇 is pressed back In the present embodiment, the venting unit and the gate valve 61 are opened, and the outside air is cooled by the condenser 3, and then introduced into the vacuum chamber 10. / Step (7): As shown in FIG. 4, the cooling water 91 is removed from the cooling capacity 90, and the agricultural product 1 is removed from the cooling water 91. Step (8): As shown in Figures 4, 5, and 6. As shown, the temperature of the bamboo shoots is measured. In the present embodiment, the temperature of the bamboo shoots 100 is slightly increased from 5.1 ° C to 6 ° C. Step (9): Figure 4 And 5,6, the bamboo shoots of the agricultural products are placed in the vacuum chamber 1〇, and the vacuum pumping unit 2 is started. The switching valve unit 60 is turned on, and the internal pressure of the vacuum chamber 10 is depressurized to a water saturated vapor pressure P4 ° corresponding to the temperature (6t) of the bamboo shoots 100. In this embodiment, the water is saturated. The vapor pressure P4 is 9.31 mbar. Step (10): As shown in Figures 4, 5 and 6, the vacuum pumping unit 2 is stopped and the switching valve unit 60 is closed to a dry temporary pressure time t3 () 82 ～492sec) temporarily pressurizes the vacuum chamber 1〇. During this temporary pressure, the water between the bamboo shells of the 1 〇〇 类 4 product will be vaporized and discharged into the vacuum chamber 10' Taking away 10 〇 of the heat of the bamboo shoots, the pressure in the vacuum chamber 10 will gradually rise from the water saturated vapor pressure P4, and the temperature of the bamboo shoots 100 will also be presented. The trend of slow decline, and then cool down to 4.6 ° C, so that the same kind of agricultural products 100 can produce a dry effect, while avoiding the flooding of the shells of these bamboo shoots 1 12 10 .1249990 Phenomenon, this is a cross-sectional photo of the similar agricultural products 100 shown in Annex 1. Also get confirmed. By using the vacuum pre-cooling process of the present invention, the bamboo shoot agricultural products 100 can be effectively cooled down to a low temperature in a general pre-cooling temperature range, and at the same time, = I, and the dried agricultural products 100 are dried. In order to avoid the occurrence of water immersion between the bamboo shoots of the bamboo shoots of the bamboo shoots, the bamboo shoots 100 can maintain good refrigeration quality. Σσ , , , and 2 are explained by the above description, and the advantages of the present invention can be summarized as follows: Since the process of heat exchange between the cooling water 91 and the bamboo shoot agricultural products 100 takes a period of time, the present invention utilizes multiple segments. The step-down and temporary pressure steps are used to reduce the temperature of these terpenoids. Thus, in the step of reducing pressure, the present invention can increase the temperature difference between the cooling water 91 and the bamboo shoots 100, so that the cooling water 9 and the bamboo shoots 100 can be quickly heated. Exchanging, therefore, the present invention can effectively shorten the time required for cooling, and in the temporary pressure step, the present invention can continuously exchange heat between the cooling water 91 and the bamboo shoot agricultural products 100 for a period of temporary pressure, thus The invention can effectively cool the bamboo shoots of agricultural products to an ideal fresh-keeping temperature, and is convenient for refrigerating transportation. Second, the present invention does not need to start the vacuum pre-cooling device in the temporary pressure step. Therefore, in the pre-cooling process of the present invention, the vacuum pre-cooling device only needs to be intermittently started, so that not only the drastic reduction can be greatly reduced. The required operating power 'can also reduce production costs. 2. After the invention cools the bamboo shoots to a desired fresh-keeping temperature, the same vacuum pre-cooling device can be used to vacuum-dry the bamboo shoots 8 11 1249990 100. Therefore, the present invention It can effectively eliminate the water content of the top 100 agricultural products on the surface and between the bamboo shoots, and can effectively avoid the phenomenon of water immersion between the bamboo shoots of the T-class agricultural products 100, and make these bamboo products 100 Good refrigeration quality can be maintained during refrigerated transport.
100的筍殼間。 Θ四、在本發明的真空冷卻過程中，料筍類農產品⑽ 是架立站高於該冷卻容器90内，且該等筒類農產& 1〇()僅 有底部浸泡於該冷卻水91内，而該冷卻水91的液面高度更 是不超過該等荀類農產品100的一半高度，因此，本發：可 有效避免該冷卻水91在暫壓過程中滲入該等筍類農產品 值得一提的是，本發明暫壓的次數與時間可配合該等 筍類農產A 1GG的大小、該冷卻水91的水量與該真空預冷 裝置的性能…等因素而作調整，例如當處理體積較小的筍 類農產品100日寺，本發明即可以只採用一次真空冷卻處理 (步驟（-）〜（三））搭配一次真空乾燥處理（步驟（六 )〜（十））。 此外，本發明雖是以筒類農產口口口 100的處理作說明， 然而’本發明當然亦可運用於其他種類的塊狀農產品，例 如紅蘿蔔、白蘿蔔、地瓜等等。 歸納上述，本發明之塊狀農產品，特別是筍類的多段 式真空預冷製程’不僅可使筍類農產品有效地降溫冷卻， 並可避免其筍殼間產生水浸現象’更可降低真空預冷的電 力成本’故確實能達到發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 12 1249990 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 空乾燥處理後的綠 綠竹旬的13殼間並 附件一：是經本發明真空冷卻與真 竹筍剖面的實際照片，由照片中可看出 無產生水浸現象。 Ϊ249990 【圖式簡單說明】 空二？本發明之塊狀農產品，特別是荀類的多段式真 架;佳實施例所使用的1空預冷裝置的系統 丁 w圖，6兄明该較佳實施例對多 空冷卻處理； |旬頡辰產品進仃真 等二2广一壓力_溫度對應圖表’說明該較佳實施例對該 該二:ίΓ進行真空冷卻時，在每-步驟實際量測到的 ，：Γ〜裝置的真空腔體内部壓力、冷卻水水溫，及筍 頒辰產品的筍溫； 二是—溫度量測圖表’說明該較佳實施例對該等荀 類辰產。口進行直;人jgp Η士 JU ^ F體内… 在每一步驟實際量測到的真空 料力、冷卻水水溫’及筒類農產品的筒溫； …圖人是—類似圖i的系統架構示意圖，說明該較佳實 把例對4等筍類農產品進行真空乾燥處理； 等错if Γ。Μ’溫度對應圖表，說明該較佳實施例對該 吉、、〇〇進订真空乾燥時，在每一步驟實際量測到的 ，、空腔體内部壓力，及筍類農產品的筍溫；及 圖6是—溫度量測圖表，說明該較佳實施例對 類農產品進行直空齡煙拉 ^ #各寸’在母—步驟實際量測到的直命 腔體内部壓力’及筍類農產品的筒溫。 、工 14 1249990 【主要元件符號說明】 100 筍類農產品 10 真空腔體 20 真空抽氣單元 30… 冷凝器 40 冷凍主機 50 管路單元 51 第一管路 52 ^ 第二管路 60 開關閥單元 61 閘閥 62 角閥 70… 通氣單元 80 壓力計 90 冷卻容器 91 冷卻水 P0 起始壓力 P1 第一壓力 P2 第二壓力 P3 第三壓力 P4 水飽和蒸汽壓 11 第一暫壓時間 12 第二暫壓時間 13 乾燥暫壓時間 (&) 15100 bamboo shells. Fourth, in the vacuum cooling process of the present invention, the raw material of the bamboo shoots (10) is a standing station higher than the cooling container 90, and the only agricultural products & 1〇() are soaked in the cooling water at the bottom. 91, and the liquid level of the cooling water 91 is not more than half of the height of the agricultural products 100. Therefore, the present invention can effectively prevent the cooling water 91 from infiltrating into the bamboo products during the temporary pressure process. It is noted that the number and timing of the temporary pressure of the present invention can be adjusted in accordance with factors such as the size of the agricultural products A 1GG, the amount of water of the cooling water 91 and the performance of the vacuum precooling device, etc., for example, when The smaller-sized bamboo shoot agricultural product 100-day temple, the present invention can be used only once by vacuum cooling treatment (steps (-) ~ (three)) with a vacuum drying process (steps (six) ~ (ten)). Further, although the present invention has been described with respect to the treatment of the mouthpiece 100 of the canned agricultural product, the present invention can of course be applied to other kinds of blocky agricultural products such as carrots, white radishes, sweet potatoes and the like. In summary, the multi-stage vacuum pre-cooling process of the block-shaped agricultural products of the present invention, especially the bamboo shoots, can not only effectively cool down the bamboo shoots, but also avoid the phenomenon of water immersion between the bamboo shoots. The cold electricity cost can indeed achieve the purpose of the invention. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to 12 1249990, that is, the simple equivalent change made by the scope of the present invention and the description of the invention. And modifications are still within the scope of the invention patent. The empty and dried green and green bamboo leaves between the 13 shells and Annex I: is the actual photograph of the vacuum cooling and the true bamboo shoots section of the present invention. It can be seen from the photograph that no water immersion occurs. Ϊ249990 [Simple description of the picture] Empty two? The block-shaped agricultural product of the present invention, in particular, the multi-stage true frame of the scorpion; the system of the 1 air pre-cooling device used in the preferred embodiment, the 6 brothers, the preferred embodiment for the multi-air cooling treatment;颉辰产品进仃真等二二广一压力_temperature correspondence chart' illustrates the preferred embodiment of the two: 真空 真空 vacuum cooling, measured in each step - actually measured: Γ ~ device vacuum The internal pressure of the cavity, the temperature of the cooling water, and the temperature of the bamboo shoots of the bamboo shoots; the second is the temperature measurement chart, which illustrates the preferred embodiment of the product. The mouth is straight; the person jgp gentleman JU ^ F body... The vacuum material force, the cooling water temperature and the barrel temperature of the barrel agricultural product are actually measured at each step; ...the figure is - a system similar to the figure i The schematic diagram of the structure shows that the better example is to vacuum dry the 4th agricultural products; Μ 'Temperature Correspondence Chart, which shows the actual measurement of the ki, 〇〇, 〇〇, 在, 在, 在 实际 实际 实际 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空 真空And FIG. 6 is a temperature measurement chart illustrating the direct internal air pressure of the direct-emptive age of the agricultural products of the preferred embodiment, and the internal pressure of the straight cavity measured by the actual measurement in the mother-step and the bamboo shoot agricultural products. The temperature of the tube. , 14 1449990 [Explanation of main components] 100 Bamboo products 10 Vacuum chamber 20 Vacuum pumping unit 30... Condenser 40 Freezer main unit 50 Piping unit 51 First line 52 ^ Second line 60 Switch valve unit 61 Gate valve 62 Angle valve 70... Ventilation unit 80 Pressure gauge 90 Cooling container 91 Cooling water P0 Starting pressure P1 First pressure P2 Second pressure P3 Third pressure P4 Water saturated vapor pressure 11 First temporary pressure time 12 Second temporary pressure time 13 Drying Temporary Time (&) 15